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SQLite3 Red/System binding
Raw
SQLite3.reds
Red/System [
Title: "Red/System SQLite3 binding"
Author: "Oldes"
File: %SQLite3.reds
Rights: "Copyright (C) 2017 David 'Oldes' Oliva. All rights reserved."
License: "BSD-3 - https:;//github.com/red/red/blob/master/BSD-3-License.txt"
]
#switch OS [
Windows [ #define SQLITE_LIBRARY "sqlite3.dll" ]
MacOSX [ #define SQLITE_LIBRARY "libsqlite3.dylib" ]
#default [ #define SQLITE_LIBRARY "libsqlite3.so.0"]
]
long-long-ptr!: alias struct! [lo [integer!] hi [integer!]] ;@@ There is no `int64!` datatype in Red/System yet
#define long-long! float! ;@@ struct is passed by reference so far so I must fake passing `long long` using `float!`
#define MAX_32_PRECISION 4294967296.0
int64-to-float: func[i [long-long-ptr!] return: [float!]][
(MAX_32_PRECISION * as float! i/hi) + (as float! i/lo) ;@@ float can be used as a workaround to pass long-long! value in function call (instead int64!)
]
float-to-int64: func[f [float!] return: [long-long-ptr!] /local i [long-long-ptr!] ][
i: declare long-long-ptr!
i/hi: as integer! (f / MAX_32_PRECISION)
i/lo: as integer! f
i
]
#define sqlite3! [pointer! [integer!]]
#define sqlite3-backup! [pointer! [integer!]]
#define sqlite3-blob! [pointer! [integer!]]
#define sqlite3-changeset-iter! [pointer! [integer!]]
#define sqlite3-context! [pointer! [integer!]]
#define sqlite3-mutex! [pointer! [integer!]]
#define sqlite3_module! [pointer! [integer!]]
#define sqlite3-rtree-dbl! [pointer! [integer!]]
#define sqlite3-rtree-geometry! [pointer! [integer!]]
#define sqlite3-rtree-query-info! [pointer! [integer!]]
#define sqlite3-session! [pointer! [integer!]]
#define sqlite3-snapshot! [pointer! [integer!]]
#define sqlite3-stmt! [pointer! [integer!]]
#define sqlite3-value! [pointer! [integer!]]
#define sqlite3-vfs! [pointer! [integer!]]
sqlite3-ref!: alias struct! [value [sqlite3!]]
sqlite3-blob-ref!: alias struct! [value [sqlite3-blob!]]
sqlite3-changeset-iter-ref!: alias struct! [value [sqlite3-changeset-iter!]]
sqlite3-session-ref!: alias struct! [value [sqlite3-session!]]
sqlite3-snapshot-ref!: alias struct! [value [sqlite3-snapshot!]]
sqlite3-stmt-ref!: alias struct! [value [sqlite3-stmt!]]
sqlite3-value-ref!: alias struct! [value [sqlite3-value!]]
string-ref!: alias struct! [value [c-string!]]
binary-ref!: alias struct! [value [byte-ptr!]]
handle-ref!: alias struct! [value [pointer! [integer!]]]
string-ref-ref!: alias struct! [value [sqlite3-ref!]]
;- Binding based on version:
#define SQLITE_VERSION_NUMBER 3018000
;-- Result Codes
; KEYWORDS: {result code definitions}
;
; Many SQLite functions return an integer result code from the set shown
; here in order to indicate success or failure.
;
; New error codes may be added in future versions of SQLite.
;
; See also: [extended result code definitions]
#enum sqlite-result! [
SQLITE_OK: 0 ;Successful result
SQLITE_ERROR ;SQL error or missing database
SQLITE_INTERNAL ;Internal logic error in SQLite
SQLITE_PERM ;Access permission denied
SQLITE_ABORT ;Callback routine requested an abort
SQLITE_BUSY ;The database file is locked
SQLITE_LOCKED ;A table in the database is locked
SQLITE_NOMEM ;A malloc() failed
SQLITE_READONLY ;Attempt to write a readonly database
SQLITE_INTERRUPT ;Operation terminated by sqlite3_interrupt()
SQLITE_IOERR ;Some kind of disk I/O error occurred
SQLITE_CORRUPT ;The database disk image is malformed
SQLITE_NOTFOUND ;Unknown opcode in sqlite3_file_control()
SQLITE_FULL ;Insertion failed because database is full
SQLITE_CANTOPEN ;Unable to open the database file
SQLITE_PROTOCOL ;Database lock protocol error
SQLITE_EMPTY ;Database is empty
SQLITE_SCHEMA ;The database schema changed
SQLITE_TOOBIG ;String or BLOB exceeds size limit
SQLITE_CONSTRAINT ;Abort due to constraint violation
SQLITE_MISMATCH ;Data type mismatch
SQLITE_MISUSE ;Library used incorrectly
SQLITE_NOLFS ;Uses OS features not supported on host
SQLITE_AUTH ;Authorization denied
SQLITE_FORMAT ;Auxiliary database format error
SQLITE_RANGE ;2nd parameter to sqlite3_bind out of range
SQLITE_NOTADB ;File opened that is not a database file
SQLITE_NOTICE ;Notifications from sqlite3_log()
SQLITE_WARNING ;Warnings from sqlite3_log()
SQLITE_ROW: 100 ;sqlite3_step() has another row ready
SQLITE_DONE ;sqlite3_step() has finished executing
;- Extended Result Codes
; KEYWORDS: {extended result code definitions}
;
; In its default configuration, SQLite API routines return one of 30 integer
; [result codes]. However, experience has shown that many of
; these result codes are too coarse-grained. They do not provide as
; much information about problems as programmers might like. In an effort to
; address this, newer versions of SQLite (version 3.3.8 [dateof:3.3.8]
; and later) include
; support for additional result codes that provide more detailed information
; about errors. These [extended result codes] are enabled or disabled
; on a per database connection basis using the
; [sqlite3_extended_result_codes()] API. Or, the extended code for
; the most recent error can be obtained using
; [sqlite3_extended_errcode()].
SQLITE_IOERR_READ: 010Ah
SQLITE_IOERR_SHORT_READ
SQLITE_IOERR_WRITE
SQLITE_IOERR_FSYNC
SQLITE_IOERR_DIR_FSYNC
SQLITE_IOERR_TRUNCATE
SQLITE_IOERR_FSTAT
SQLITE_IOERR_UNLOCK
SQLITE_IOERR_RDLOCK
SQLITE_IOERR_DELETE
SQLITE_IOERR_BLOCKED
SQLITE_IOERR_NOMEM
SQLITE_IOERR_ACCESS
SQLITE_IOERR_CHECKRESERVEDLOCK
SQLITE_IOERR_LOCK
SQLITE_IOERR_CLOSE
SQLITE_IOERR_DIR_CLOSE
SQLITE_IOERR_SHMOPEN
SQLITE_IOERR_SHMSIZE
SQLITE_IOERR_SHMLOCK
SQLITE_IOERR_SHMMAP
SQLITE_IOERR_SEEK
SQLITE_IOERR_DELETE_NOENT
SQLITE_IOERR_MMAP
SQLITE_IOERR_GETTEMPPATH
SQLITE_IOERR_CONVPATH
SQLITE_IOERR_VNODE
SQLITE_IOERR_AUTH
SQLITE_LOCKED_SHAREDCACHE: 0106h
SQLITE_BUSY_RECOVERY: 0105h
SQLITE_BUSY_SNAPSHOT: 0205h
SQLITE_CANTOPEN_NOTEMPDIR: 010Eh
SQLITE_CANTOPEN_ISDIR
SQLITE_CANTOPEN_FULLPATH
SQLITE_CANTOPEN_CONVPATH
SQLITE_CORRUPT_VTAB: 010Bh
SQLITE_READONLY_RECOVERY: 0108h
SQLITE_READONLY_CANTLOCK
SQLITE_READONLY_ROLLBACK
SQLITE_READONLY_DBMOVED
SQLITE_ABORT_ROLLBACK: 0204h
SQLITE_CONSTRAINT_CHECK: 0113h
SQLITE_CONSTRAINT_COMMITHOOK
SQLITE_CONSTRAINT_FOREIGNKEY
SQLITE_CONSTRAINT_FUNCTION
SQLITE_CONSTRAINT_NOTNULL
SQLITE_CONSTRAINT_PRIMARYKEY
SQLITE_CONSTRAINT_TRIGGER
SQLITE_CONSTRAINT_UNIQUE
SQLITE_CONSTRAINT_VTAB
SQLITE_CONSTRAINT_ROWID
SQLITE_NOTICE_RECOVER_WAL: 011Bh
SQLITE_NOTICE_RECOVER_ROLLBACK
SQLITE_WARNING_AUTOINDEX: 011Ch
SQLITE_AUTH_USER: 0117h
SQLITE_OK_LOAD_PERMANENTLY: 0100h
]
;- Flags For File Open Operations
;
; These bit values are intended for use in the
; 3rd parameter to the [sqlite3_open_v2()] interface and
; in the 4th parameter to the [sqlite3_vfs.xOpen] method.
#define SQLITE_OPEN_READONLY 00000001h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_READWRITE 00000002h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_CREATE 00000004h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_DELETEONCLOSE 00000008h ;VFS only
#define SQLITE_OPEN_EXCLUSIVE 00000010h ;VFS only
#define SQLITE_OPEN_AUTOPROXY 00000020h ;VFS only
#define SQLITE_OPEN_URI 00000040h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_MEMORY 00000080h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_MAIN_DB 00000100h ;VFS only
#define SQLITE_OPEN_TEMP_DB 00000200h ;VFS only
#define SQLITE_OPEN_TRANSIENT_DB 00000400h ;VFS only
#define SQLITE_OPEN_MAIN_JOURNAL 00000800h ;VFS only
#define SQLITE_OPEN_TEMP_JOURNAL 00001000h ;VFS only
#define SQLITE_OPEN_SUBJOURNAL 00002000h ;VFS only
#define SQLITE_OPEN_MASTER_JOURNAL 00004000h ;VFS only
#define SQLITE_OPEN_NOMUTEX 00008000h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_FULLMUTEX 00010000h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_SHAREDCACHE 00020000h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_PRIVATECACHE 00040000h ;Ok for sqlite3_open_v2()
#define SQLITE_OPEN_WAL 00080000h ;VFS only
; Reserved: 0x00F00000
;- Device Characteristics
;
; The xDeviceCharacteristics method of the [sqlite3_io_methods]
; object returns an integer which is a vector of these
; bit values expressing I/O characteristics of the mass storage
; device that holds the file that the [sqlite3_io_methods]
; refers to.
;
; The SQLITE_IOCAP_ATOMIC property means that all writes of
; any size are atomic. The SQLITE_IOCAP_ATOMICnnn values
; mean that writes of blocks that are nnn bytes in size and
; are aligned to an address which is an integer multiple of
; nnn are atomic. The SQLITE_IOCAP_SAFE_APPEND value means
; that when data is appended to a file, the data is appended
; first then the size of the file is extended, never the other
; way around. The SQLITE_IOCAP_SEQUENTIAL property means that
; information is written to disk in the same order as calls
; to xWrite(). The SQLITE_IOCAP_POWERSAFE_OVERWRITE property means that
; after reboot following a crash or power loss, the only bytes in a
; file that were written at the application level might have changed
; and that adjacent bytes, even bytes within the same sector are
; guaranteed to be unchanged. The SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN
; flag indicates that a file cannot be deleted when open. The
; SQLITE_IOCAP_IMMUTABLE flag indicates that the file is on
; read-only media and cannot be changed even by processes with
; elevated privileges.
#define SQLITE_IOCAP_ATOMIC 00000001h
#define SQLITE_IOCAP_ATOMIC512 00000002h
#define SQLITE_IOCAP_ATOMIC1K 00000004h
#define SQLITE_IOCAP_ATOMIC2K 00000008h
#define SQLITE_IOCAP_ATOMIC4K 00000010h
#define SQLITE_IOCAP_ATOMIC8K 00000020h
#define SQLITE_IOCAP_ATOMIC16K 00000040h
#define SQLITE_IOCAP_ATOMIC32K 00000080h
#define SQLITE_IOCAP_ATOMIC64K 00000100h
#define SQLITE_IOCAP_SAFE_APPEND 00000200h
#define SQLITE_IOCAP_SEQUENTIAL 00000400h
#define SQLITE_IOCAP_UNDELETABLE_WHEN_OPEN 00000800h
#define SQLITE_IOCAP_POWERSAFE_OVERWRITE 00001000h
#define SQLITE_IOCAP_IMMUTABLE 00002000h
;- File Locking Levels
;
; SQLite uses one of these integer values as the second
; argument to calls it makes to the xLock() and xUnlock() methods
; of an [sqlite3_io_methods] object.
#define SQLITE_LOCK_NONE 0
#define SQLITE_LOCK_SHARED 1
#define SQLITE_LOCK_RESERVED 2
#define SQLITE_LOCK_PENDING 3
#define SQLITE_LOCK_EXCLUSIVE 4
;- Synchronization Type Flags
;
; When SQLite invokes the xSync() method of an
; [sqlite3_io_methods] object it uses a combination of
; these integer values as the second argument.
;
; When the SQLITE_SYNC_DATAONLY flag is used, it means that the
; sync operation only needs to flush data to mass storage. Inode
; information need not be flushed. If the lower four bits of the flag
; equal SQLITE_SYNC_NORMAL, that means to use normal fsync() semantics.
; If the lower four bits equal SQLITE_SYNC_FULL, that means
; to use Mac OS X style fullsync instead of fsync().
;
; Do not confuse the SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL flags
; with the [PRAGMA synchronous]=NORMAL and [PRAGMA synchronous]=FULL
; settings. The [synchronous pragma] determines when calls to the
; xSync VFS method occur and applies uniformly across all platforms.
; The SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL flags determine how
; energetic or rigorous or forceful the sync operations are and
; only make a difference on Mac OSX for the default SQLite code.
; (Third-party VFS implementations might also make the distinction
; between SQLITE_SYNC_NORMAL and SQLITE_SYNC_FULL, but among the
; operating systems natively supported by SQLite, only Mac OSX
; cares about the difference.)
#define SQLITE_SYNC_NORMAL 00000002h
#define SQLITE_SYNC_FULL 00000003h
#define SQLITE_SYNC_DATAONLY 00000010h
;- Standard File Control Opcodes
; KEYWORDS: {file control opcodes} {file control opcode}
;
; These integer constants are opcodes for the xFileControl method
; of the [sqlite3_io_methods] object and for the [sqlite3_file_control()]
; interface.
;
; <ul>
; <li>[[SQLITE_FCNTL_LOCKSTATE]]
; The [SQLITE_FCNTL_LOCKSTATE] opcode is used for debugging. This
; opcode causes the xFileControl method to write the current state of
; the lock (one of [SQLITE_LOCK_NONE], [SQLITE_LOCK_SHARED],
; [SQLITE_LOCK_RESERVED], [SQLITE_LOCK_PENDING], or [SQLITE_LOCK_EXCLUSIVE])
; into an integer that the pArg argument points to. This capability
; is used during testing and is only available when the SQLITE_TEST
; compile-time option is used.
;
; <li>[[SQLITE_FCNTL_SIZE_HINT]]
; The [SQLITE_FCNTL_SIZE_HINT] opcode is used by SQLite to give the VFS
; layer a hint of how large the database file will grow to be during the
; current transaction. This hint is not guaranteed to be accurate but it
; is often close. The underlying VFS might choose to preallocate database
; file space based on this hint in order to help writes to the database
; file run faster.
;
; <li>[[SQLITE_FCNTL_CHUNK_SIZE]]
; The [SQLITE_FCNTL_CHUNK_SIZE] opcode is used to request that the VFS
; extends and truncates the database file in chunks of a size specified
; by the user. The fourth argument to [sqlite3_file_control()] should
; point to an integer (type int) containing the new chunk-size to use
; for the nominated database. Allocating database file space in large
; chunks (say 1MB at a time), may reduce file-system fragmentation and
; improve performance on some systems.
;
; <li>[[SQLITE_FCNTL_FILE_POINTER]]
; The [SQLITE_FCNTL_FILE_POINTER] opcode is used to obtain a pointer
; to the [sqlite3_file] object associated with a particular database
; connection. See also [SQLITE_FCNTL_JOURNAL_POINTER].
;
; <li>[[SQLITE_FCNTL_JOURNAL_POINTER]]
; The [SQLITE_FCNTL_JOURNAL_POINTER] opcode is used to obtain a pointer
; to the [sqlite3_file] object associated with the journal file (either
; the [rollback journal] or the [write-ahead log]) for a particular database
; connection. See also [SQLITE_FCNTL_FILE_POINTER].
;
; <li>[[SQLITE_FCNTL_SYNC_OMITTED]]
; No longer in use.
;
; <li>[[SQLITE_FCNTL_SYNC]]
; The [SQLITE_FCNTL_SYNC] opcode is generated internally by SQLite and
; sent to the VFS immediately before the xSync method is invoked on a
; database file descriptor. Or, if the xSync method is not invoked
; because the user has configured SQLite with
; [PRAGMA synchronous | PRAGMA synchronous=OFF] it is invoked in place
; of the xSync method. In most cases, the pointer argument passed with
; this file-control is NULL. However, if the database file is being synced
; as part of a multi-database commit, the argument points to a nul-terminated
; string containing the transactions master-journal file name. VFSes that
; do not need this signal should silently ignore this opcode. Applications
; should not call [sqlite3_file_control()] with this opcode as doing so may
; disrupt the operation of the specialized VFSes that do require it.
;
; <li>[[SQLITE_FCNTL_COMMIT_PHASETWO]]
; The [SQLITE_FCNTL_COMMIT_PHASETWO] opcode is generated internally by SQLite
; and sent to the VFS after a transaction has been committed immediately
; but before the database is unlocked. VFSes that do not need this signal
; should silently ignore this opcode. Applications should not call
; [sqlite3_file_control()] with this opcode as doing so may disrupt the
; operation of the specialized VFSes that do require it.
;
; <li>[[SQLITE_FCNTL_WIN32_AV_RETRY]]
; ^The [SQLITE_FCNTL_WIN32_AV_RETRY] opcode is used to configure automatic
; retry counts and intervals for certain disk I/O operations for the
; windows [VFS] in order to provide robustness in the presence of
; anti-virus programs. By default, the windows VFS will retry file read,
; file write, and file delete operations up to 10 times, with a delay
; of 25 milliseconds before the first retry and with the delay increasing
; by an additional 25 milliseconds with each subsequent retry. This
; opcode allows these two values (10 retries and 25 milliseconds of delay)
; to be adjusted. The values are changed for all database connections
; within the same process. The argument is a pointer to an array of two
; integers where the first integer i the new retry count and the second
; integer is the delay. If either integer is negative, then the setting
; is not changed but instead the prior value of that setting is written
; into the array entry, allowing the current retry settings to be
; interrogated. The zDbName parameter is ignored.
;
; <li>[[SQLITE_FCNTL_PERSIST_WAL]]
; ^The [SQLITE_FCNTL_PERSIST_WAL] opcode is used to set or query the
; persistent [WAL | Write Ahead Log] setting. By default, the auxiliary
; write ahead log and shared memory files used for transaction control
; are automatically deleted when the latest connection to the database
; closes. Setting persistent WAL mode causes those files to persist after
; close. Persisting the files is useful when other processes that do not
; have write permission on the directory containing the database file want
; to read the database file, as the WAL and shared memory files must exist
; in order for the database to be readable. The fourth parameter to
; [sqlite3_file_control()] for this opcode should be a pointer to an integer.
; That integer is 0 to disable persistent WAL mode or 1 to enable persistent
; WAL mode. If the integer is -1, then it is overwritten with the current
; WAL persistence setting.
;
; <li>[[SQLITE_FCNTL_POWERSAFE_OVERWRITE]]
; ^The [SQLITE_FCNTL_POWERSAFE_OVERWRITE] opcode is used to set or query the
; persistent "powersafe-overwrite" or "PSOW" setting. The PSOW setting
; determines the [SQLITE_IOCAP_POWERSAFE_OVERWRITE] bit of the
; xDeviceCharacteristics methods. The fourth parameter to
; [sqlite3_file_control()] for this opcode should be a pointer to an integer.
; That integer is 0 to disable zero-damage mode or 1 to enable zero-damage
; mode. If the integer is -1, then it is overwritten with the current
; zero-damage mode setting.
;
; <li>[[SQLITE_FCNTL_OVERWRITE]]
; ^The [SQLITE_FCNTL_OVERWRITE] opcode is invoked by SQLite after opening
; a write transaction to indicate that, unless it is rolled back for some
; reason, the entire database file will be overwritten by the current
; transaction. This is used by VACUUM operations.
;
; <li>[[SQLITE_FCNTL_VFSNAME]]
; ^The [SQLITE_FCNTL_VFSNAME] opcode can be used to obtain the names of
; all [VFSes] in the VFS stack. The names are of all VFS shims and the
; final bottom-level VFS are written into memory obtained from
; [sqlite3_malloc()] and the result is stored in the char* variable
; that the fourth parameter of [sqlite3_file_control()] points to.
; The caller is responsible for freeing the memory when done. As with
; all file-control actions, there is no guarantee that this will actually
; do anything. Callers should initialize the char* variable to a NULL
; pointer in case this file-control is not implemented. This file-control
; is intended for diagnostic use only.
;
; <li>[[SQLITE_FCNTL_VFS_POINTER]]
; ^The [SQLITE_FCNTL_VFS_POINTER] opcode finds a pointer to the top-level
; [VFSes] currently in use. ^(The argument X in
; sqlite3_file_control(db,SQLITE_FCNTL_VFS_POINTER,X) must be
; of type "[sqlite3_vfs] ; ". This opcodes will set *X
; to a pointer to the top-level VFS.)^
; ^When there are multiple VFS shims in the stack, this opcode finds the
; upper-most shim only.
;
; <li>[[SQLITE_FCNTL_PRAGMA]]
; ^Whenever a [PRAGMA] statement is parsed, an [SQLITE_FCNTL_PRAGMA]
; file control is sent to the open [sqlite3_file] object corresponding
; to the database file to which the pragma statement refers. ^The argument
; to the [SQLITE_FCNTL_PRAGMA] file control is an array of
; pointers to strings (char; ) in which the second element of the array
; is the name of the pragma and the third element is the argument to the
; pragma or NULL if the pragma has no argument. ^The handler for an
; [SQLITE_FCNTL_PRAGMA] file control can optionally make the first element
; of the char; argument point to a string obtained from [sqlite3_mprintf()]
; or the equivalent and that string will become the result of the pragma or
; the error message if the pragma fails. ^If the
; [SQLITE_FCNTL_PRAGMA] file control returns [SQLITE_NOTFOUND], then normal
; [PRAGMA] processing continues. ^If the [SQLITE_FCNTL_PRAGMA]
; file control returns [SQLITE_OK], then the parser assumes that the
; VFS has handled the PRAGMA itself and the parser generates a no-op
; prepared statement if result string is NULL, or that returns a copy
; of the result string if the string is non-NULL.
; ^If the [SQLITE_FCNTL_PRAGMA] file control returns
; any result code other than [SQLITE_OK] or [SQLITE_NOTFOUND], that means
; that the VFS encountered an error while handling the [PRAGMA] and the
; compilation of the PRAGMA fails with an error. ^The [SQLITE_FCNTL_PRAGMA]
; file control occurs at the beginning of pragma statement analysis and so
; it is able to override built-in [PRAGMA] statements.
;
; <li>[[SQLITE_FCNTL_BUSYHANDLER]]
; ^The [SQLITE_FCNTL_BUSYHANDLER]
; file-control may be invoked by SQLite on the database file handle
; shortly after it is opened in order to provide a custom VFS with access
; to the connections busy-handler callback. The argument is of type (void ; )
; - an array of two (void *) values. The first (void *) actually points
; to a function of type (int (*)(void *)). In order to invoke the connections
; busy-handler, this function should be invoked with the second (void *) in
; the array as the only argument. If it returns non-zero, then the operation
; should be retried. If it returns zero, the custom VFS should abandon the
; current operation.
;
; <li>[[SQLITE_FCNTL_TEMPFILENAME]]
; ^Application can invoke the [SQLITE_FCNTL_TEMPFILENAME] file-control
; to have SQLite generate a
; temporary filename using the same algorithm that is followed to generate
; temporary filenames for TEMP tables and other internal uses. The
; argument should be a char; which will be filled with the filename
; written into memory obtained from [sqlite3_malloc()]. The caller should
; invoke [sqlite3_free()] on the result to avoid a memory leak.
;
; <li>[[SQLITE_FCNTL_MMAP_SIZE]]
; The [SQLITE_FCNTL_MMAP_SIZE] file control is used to query or set the
; maximum number of bytes that will be used for memory-mapped I/O.
; The argument is a pointer to a value of type sqlite3_int64 that
; is an advisory maximum number of bytes in the file to memory map. The
; pointer is overwritten with the old value. The limit is not changed if
; the value originally pointed to is negative, and so the current limit
; can be queried by passing in a pointer to a negative number. This
; file-control is used internally to implement [PRAGMA mmap_size].
;
; <li>[[SQLITE_FCNTL_TRACE]]
; The [SQLITE_FCNTL_TRACE] file control provides advisory information
; to the VFS about what the higher layers of the SQLite stack are doing.
; This file control is used by some VFS activity tracing [shims].
; The argument is a zero-terminated string. Higher layers in the
; SQLite stack may generate instances of this file control if
; the [SQLITE_USE_FCNTL_TRACE] compile-time option is enabled.
;
; <li>[[SQLITE_FCNTL_HAS_MOVED]]
; The [SQLITE_FCNTL_HAS_MOVED] file control interprets its argument as a
; pointer to an integer and it writes a boolean into that integer depending
; on whether or not the file has been renamed, moved, or deleted since it
; was first opened.
;
; <li>[[SQLITE_FCNTL_WIN32_GET_HANDLE]]
; The [SQLITE_FCNTL_WIN32_GET_HANDLE] opcode can be used to obtain the
; underlying native file handle associated with a file handle. This file
; control interprets its argument as a pointer to a native file handle and
; writes the resulting value there.
;
; <li>[[SQLITE_FCNTL_WIN32_SET_HANDLE]]
; The [SQLITE_FCNTL_WIN32_SET_HANDLE] opcode is used for debugging. This
; opcode causes the xFileControl method to swap the file handle with the one
; pointed to by the pArg argument. This capability is used during testing
; and only needs to be supported when SQLITE_TEST is defined.
;
; <li>[[SQLITE_FCNTL_WAL_BLOCK]]
; The [SQLITE_FCNTL_WAL_BLOCK] is a signal to the VFS layer that it might
; be advantageous to block on the next WAL lock if the lock is not immediately
; available. The WAL subsystem issues this signal during rare
; circumstances in order to fix a problem with priority inversion.
; Applications should <em>not</em> use this file-control.
;
; <li>[[SQLITE_FCNTL_ZIPVFS]]
; The [SQLITE_FCNTL_ZIPVFS] opcode is implemented by zipvfs only. All other
; VFS should return SQLITE_NOTFOUND for this opcode.
;
; <li>[[SQLITE_FCNTL_RBU]]
; The [SQLITE_FCNTL_RBU] opcode is implemented by the special VFS used by
; the RBU extension only. All other VFS should return SQLITE_NOTFOUND for
; this opcode.
; </ul>
#define SQLITE_FCNTL_LOCKSTATE 1
#define SQLITE_FCNTL_GET_LOCKPROXYFILE 2
#define SQLITE_FCNTL_SET_LOCKPROXYFILE 3
#define SQLITE_FCNTL_LAST_ERRNO 4
#define SQLITE_FCNTL_SIZE_HINT 5
#define SQLITE_FCNTL_CHUNK_SIZE 6
#define SQLITE_FCNTL_FILE_POINTER 7
#define SQLITE_FCNTL_SYNC_OMITTED 8
#define SQLITE_FCNTL_WIN32_AV_RETRY 9
#define SQLITE_FCNTL_PERSIST_WAL 10
#define SQLITE_FCNTL_OVERWRITE 11
#define SQLITE_FCNTL_VFSNAME 12
#define SQLITE_FCNTL_POWERSAFE_OVERWRITE 13
#define SQLITE_FCNTL_PRAGMA 14
#define SQLITE_FCNTL_BUSYHANDLER 15
#define SQLITE_FCNTL_TEMPFILENAME 16
#define SQLITE_FCNTL_MMAP_SIZE 18
#define SQLITE_FCNTL_TRACE 19
#define SQLITE_FCNTL_HAS_MOVED 20
#define SQLITE_FCNTL_SYNC 21
#define SQLITE_FCNTL_COMMIT_PHASETWO 22
#define SQLITE_FCNTL_WIN32_SET_HANDLE 23
#define SQLITE_FCNTL_WAL_BLOCK 24
#define SQLITE_FCNTL_ZIPVFS 25
#define SQLITE_FCNTL_RBU 26
#define SQLITE_FCNTL_VFS_POINTER 27
#define SQLITE_FCNTL_JOURNAL_POINTER 28
#define SQLITE_FCNTL_WIN32_GET_HANDLE 29
#define SQLITE_FCNTL_PDB 30
; deprecated names
#define SQLITE_GET_LOCKPROXYFILE SQLITE_FCNTL_GET_LOCKPROXYFILE
#define SQLITE_SET_LOCKPROXYFILE SQLITE_FCNTL_SET_LOCKPROXYFILE
#define SQLITE_LAST_ERRNO SQLITE_FCNTL_LAST_ERRNO
;- Flags for the xAccess VFS method
;
; These integer constants can be used as the third parameter to
; the xAccess method of an [sqlite3_vfs] object. They determine
; what kind of permissions the xAccess method is looking for.
; With SQLITE_ACCESS_EXISTS, the xAccess method
; simply checks whether the file exists.
; With SQLITE_ACCESS_READWRITE, the xAccess method
; checks whether the named directory is both readable and writable
; (in other words, if files can be added, removed, and renamed within
; the directory).
; The SQLITE_ACCESS_READWRITE constant is currently used only by the
; [temp_store_directory pragma], though this could change in a future
; release of SQLite.
; With SQLITE_ACCESS_READ, the xAccess method
; checks whether the file is readable. The SQLITE_ACCESS_READ constant is
; currently unused, though it might be used in a future release of
; SQLite.
#define SQLITE_ACCESS_EXISTS 0
#define SQLITE_ACCESS_READWRITE 1 ; Used by PRAGMA temp_store_directory
#define SQLITE_ACCESS_READ 2 ; Unused
;- Flags for the xShmLock VFS method
;
; These integer constants define the various locking operations
; allowed by the xShmLock method of [sqlite3_io_methods]. The
; following are the only legal combinations of flags to the
; xShmLock method:
;
; <ul>
; <li> SQLITE_SHM_LOCK | SQLITE_SHM_SHARED
; <li> SQLITE_SHM_LOCK | SQLITE_SHM_EXCLUSIVE
; <li> SQLITE_SHM_UNLOCK | SQLITE_SHM_SHARED
; <li> SQLITE_SHM_UNLOCK | SQLITE_SHM_EXCLUSIVE
; </ul>
;
; When unlocking, the same SHARED or EXCLUSIVE flag must be supplied as
; was given on the corresponding lock.
;
; The xShmLock method can transition between unlocked and SHARED or
; between unlocked and EXCLUSIVE. It cannot transition between SHARED
; and EXCLUSIVE.
#define SQLITE_SHM_UNLOCK 1
#define SQLITE_SHM_LOCK 2
#define SQLITE_SHM_SHARED 4
#define SQLITE_SHM_EXCLUSIVE 8
;- Maximum xShmLock index
;
; The xShmLock method on [sqlite3_io_methods] may use values
; between 0 and this upper bound as its "offset" argument.
; The SQLite core will never attempt to acquire or release a
; lock outside of this range
#define SQLITE_SHM_NLOCK 8
;- Configuration Options
; KEYWORDS: {configuration option}
;
; These constants are the available integer configuration options that
; can be passed as the first argument to the [sqlite3_config()] interface.
;
; New configuration options may be added in future releases of SQLite.
; Existing configuration options might be discontinued. Applications
; should check the return code from [sqlite3_config()] to make sure that
; the call worked. The [sqlite3_config()] interface will return a
; non-zero [error code] if a discontinued or unsupported configuration option
; is invoked.
;
; <dl>
; [[SQLITE_CONFIG_SINGLETHREAD]] <dt>SQLITE_CONFIG_SINGLETHREAD</dt>
; <dd>There are no arguments to this option. ^This option sets the
; [threading mode] to Single-thread. In other words, it disables
; all mutexing and puts SQLite into a mode where it can only be used
; by a single thread. ^If SQLite is compiled with
; the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
; it is not possible to change the [threading mode] from its default
; value of Single-thread and so [sqlite3_config()] will return
; [SQLITE_ERROR] if called with the SQLITE_CONFIG_SINGLETHREAD
; configuration option.</dd>
;
; [[SQLITE_CONFIG_MULTITHREAD]] <dt>SQLITE_CONFIG_MULTITHREAD</dt>
; <dd>There are no arguments to this option. ^This option sets the
; [threading mode] to Multi-thread. In other words, it disables
; mutexing on [database connection] and [prepared statement] objects.
; The application is responsible for serializing access to
; [database connections] and [prepared statements]. But other mutexes
; are enabled so that SQLite will be safe to use in a multi-threaded
; environment as long as no two threads attempt to use the same
; [database connection] at the same time. ^If SQLite is compiled with
; the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
; it is not possible to set the Multi-thread [threading mode] and
; [sqlite3_config()] will return [SQLITE_ERROR] if called with the
; SQLITE_CONFIG_MULTITHREAD configuration option.</dd>
;
; [[SQLITE_CONFIG_SERIALIZED]] <dt>SQLITE_CONFIG_SERIALIZED</dt>
; <dd>There are no arguments to this option. ^This option sets the
; [threading mode] to Serialized. In other words, this option enables
; all mutexes including the recursive
; mutexes on [database connection] and [prepared statement] objects.
; In this mode (which is the default when SQLite is compiled with
; [SQLITE_THREADSAFE=1]) the SQLite library will itself serialize access
; to [database connections] and [prepared statements] so that the
; application is free to use the same [database connection] or the
; same [prepared statement] in different threads at the same time.
; ^If SQLite is compiled with
; the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
; it is not possible to set the Serialized [threading mode] and
; [sqlite3_config()] will return [SQLITE_ERROR] if called with the
; SQLITE_CONFIG_SERIALIZED configuration option.</dd>
;
; [[SQLITE_CONFIG_MALLOC]] <dt>SQLITE_CONFIG_MALLOC</dt>
; <dd> ^(The SQLITE_CONFIG_MALLOC option takes a single argument which is
; a pointer to an instance of the [sqlite3_mem_methods] structure.
; The argument specifies
; alternative low-level memory allocation routines to be used in place of
; the memory allocation routines built into SQLite.)^ ^SQLite makes
; its own private copy of the content of the [sqlite3_mem_methods] structure
; before the [sqlite3_config()] call returns.</dd>
;
; [[SQLITE_CONFIG_GETMALLOC]] <dt>SQLITE_CONFIG_GETMALLOC</dt>
; <dd> ^(The SQLITE_CONFIG_GETMALLOC option takes a single argument which
; is a pointer to an instance of the [sqlite3_mem_methods] structure.
; The [sqlite3_mem_methods]
; structure is filled with the currently defined memory allocation routines.)^
; This option can be used to overload the default memory allocation
; routines with a wrapper that simulations memory allocation failure or
; tracks memory usage, for example. </dd>
;
; [[SQLITE_CONFIG_MEMSTATUS]] <dt>SQLITE_CONFIG_MEMSTATUS</dt>
; <dd> ^The SQLITE_CONFIG_MEMSTATUS option takes single argument of type int,
; interpreted as a boolean, which enables or disables the collection of
; memory allocation statistics. ^(When memory allocation statistics are
; disabled, the following SQLite interfaces become non-operational:
; <ul>
; <li> [sqlite3_memory_used()]
; <li> [sqlite3_memory_highwater()]
; <li> [sqlite3_soft_heap_limit64()]
; <li> [sqlite3_status64()]
; </ul>)^
; ^Memory allocation statistics are enabled by default unless SQLite is
; compiled with [SQLITE_DEFAULT_MEMSTATUS]=0 in which case memory
; allocation statistics are disabled by default.
; </dd>
;
; [[SQLITE_CONFIG_SCRATCH]] <dt>SQLITE_CONFIG_SCRATCH</dt>
; <dd> ^The SQLITE_CONFIG_SCRATCH option specifies a static memory buffer
; that SQLite can use for scratch memory. ^(There are three arguments
; to SQLITE_CONFIG_SCRATCH: A pointer an 8-byte
; aligned memory buffer from which the scratch allocations will be
; drawn, the size of each scratch allocation (sz),
; and the maximum number of scratch allocations (N).)^
; The first argument must be a pointer to an 8-byte aligned buffer
; of at least sz*N bytes of memory.
; ^SQLite will not use more than one scratch buffers per thread.
; ^SQLite will never request a scratch buffer that is more than 6
; times the database page size.
; ^If SQLite needs needs additional
; scratch memory beyond what is provided by this configuration option, then
; [sqlite3_malloc()] will be used to obtain the memory needed.<p>
; ^When the application provides any amount of scratch memory using
; SQLITE_CONFIG_SCRATCH, SQLite avoids unnecessary large
; [sqlite3_malloc|heap allocations].
; This can help [Robson proof|prevent memory allocation failures] due to heap
; fragmentation in low-memory embedded systems.
; </dd>
;
; [[SQLITE_CONFIG_PAGECACHE]] <dt>SQLITE_CONFIG_PAGECACHE</dt>
; <dd> ^The SQLITE_CONFIG_PAGECACHE option specifies a memory pool
; that SQLite can use for the database page cache with the default page
; cache implementation.
; This configuration option is a no-op if an application-define page
; cache implementation is loaded using the [SQLITE_CONFIG_PCACHE2].
; ^There are three arguments to SQLITE_CONFIG_PAGECACHE: A pointer to
; 8-byte aligned memory (pMem), the size of each page cache line (sz),
; and the number of cache lines (N).
; The sz argument should be the size of the largest database page
; (a power of two between 512 and 65536) plus some extra bytes for each
; page header. ^The number of extra bytes needed by the page header
; can be determined using [SQLITE_CONFIG_PCACHE_HDRSZ].
; ^It is harmless, apart from the wasted memory,
; for the sz parameter to be larger than necessary. The pMem
; argument must be either a NULL pointer or a pointer to an 8-byte
; aligned block of memory of at least sz*N bytes, otherwise
; subsequent behavior is undefined.
; ^When pMem is not NULL, SQLite will strive to use the memory provided
; to satisfy page cache needs, falling back to [sqlite3_malloc()] if
; a page cache line is larger than sz bytes or if all of the pMem buffer
; is exhausted.
; ^If pMem is NULL and N is non-zero, then each database connection
; does an initial bulk allocation for page cache memory
; from [sqlite3_malloc()] sufficient for N cache lines if N is positive or
; of -1024*N bytes if N is negative, . ^If additional
; page cache memory is needed beyond what is provided by the initial
; allocation, then SQLite goes to [sqlite3_malloc()] separately for each
; additional cache line. </dd>
;
; [[SQLITE_CONFIG_HEAP]] <dt>SQLITE_CONFIG_HEAP</dt>
; <dd> ^The SQLITE_CONFIG_HEAP option specifies a static memory buffer
; that SQLite will use for all of its dynamic memory allocation needs
; beyond those provided for by [SQLITE_CONFIG_SCRATCH] and
; [SQLITE_CONFIG_PAGECACHE].
; ^The SQLITE_CONFIG_HEAP option is only available if SQLite is compiled
; with either [SQLITE_ENABLE_MEMSYS3] or [SQLITE_ENABLE_MEMSYS5] and returns
; [SQLITE_ERROR] if invoked otherwise.
; ^There are three arguments to SQLITE_CONFIG_HEAP:
; An 8-byte aligned pointer to the memory,
; the number of bytes in the memory buffer, and the minimum allocation size.
; ^If the first pointer (the memory pointer) is NULL, then SQLite reverts
; to using its default memory allocator (the system malloc() implementation),
; undoing any prior invocation of [SQLITE_CONFIG_MALLOC]. ^If the
; memory pointer is not NULL then the alternative memory
; allocator is engaged to handle all of SQLites memory allocation needs.
; The first pointer (the memory pointer) must be aligned to an 8-byte
; boundary or subsequent behavior of SQLite will be undefined.
; The minimum allocation size is capped at 2; 12. Reasonable values
; for the minimum allocation size are 2; 5 through 2; 8.</dd>
;
; [[SQLITE_CONFIG_MUTEX]] <dt>SQLITE_CONFIG_MUTEX</dt>
; <dd> ^(The SQLITE_CONFIG_MUTEX option takes a single argument which is a
; pointer to an instance of the [sqlite3_mutex_methods] structure.
; The argument specifies alternative low-level mutex routines to be used
; in place the mutex routines built into SQLite.)^ ^SQLite makes a copy of
; the content of the [sqlite3_mutex_methods] structure before the call to
; [sqlite3_config()] returns. ^If SQLite is compiled with
; the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
; the entire mutexing subsystem is omitted from the build and hence calls to
; [sqlite3_config()] with the SQLITE_CONFIG_MUTEX configuration option will
; return [SQLITE_ERROR].</dd>
;
; [[SQLITE_CONFIG_GETMUTEX]] <dt>SQLITE_CONFIG_GETMUTEX</dt>
; <dd> ^(The SQLITE_CONFIG_GETMUTEX option takes a single argument which
; is a pointer to an instance of the [sqlite3_mutex_methods] structure. The
; [sqlite3_mutex_methods]
; structure is filled with the currently defined mutex routines.)^
; This option can be used to overload the default mutex allocation
; routines with a wrapper used to track mutex usage for performance
; profiling or testing, for example. ^If SQLite is compiled with
; the [SQLITE_THREADSAFE | SQLITE_THREADSAFE=0] compile-time option then
; the entire mutexing subsystem is omitted from the build and hence calls to
; [sqlite3_config()] with the SQLITE_CONFIG_GETMUTEX configuration option will
; return [SQLITE_ERROR].</dd>
;
; [[SQLITE_CONFIG_LOOKASIDE]] <dt>SQLITE_CONFIG_LOOKASIDE</dt>
; <dd> ^(The SQLITE_CONFIG_LOOKASIDE option takes two arguments that determine
; the default size of lookaside memory on each [database connection].
; The first argument is the
; size of each lookaside buffer slot and the second is the number of
; slots allocated to each database connection.)^ ^(SQLITE_CONFIG_LOOKASIDE
; sets the <i>default</i> lookaside size. The [SQLITE_DBCONFIG_LOOKASIDE]
; option to [sqlite3_db_config()] can be used to change the lookaside
; configuration on individual connections.)^ </dd>
;
; [[SQLITE_CONFIG_PCACHE2]] <dt>SQLITE_CONFIG_PCACHE2</dt>
; <dd> ^(The SQLITE_CONFIG_PCACHE2 option takes a single argument which is
; a pointer to an [sqlite3_pcache_methods2] object. This object specifies
; the interface to a custom page cache implementation.)^
; ^SQLite makes a copy of the [sqlite3_pcache_methods2] object.</dd>
;
; [[SQLITE_CONFIG_GETPCACHE2]] <dt>SQLITE_CONFIG_GETPCACHE2</dt>
; <dd> ^(The SQLITE_CONFIG_GETPCACHE2 option takes a single argument which
; is a pointer to an [sqlite3_pcache_methods2] object. SQLite copies of
; the current page cache implementation into that object.)^ </dd>
;
; [[SQLITE_CONFIG_LOG]] <dt>SQLITE_CONFIG_LOG</dt>
; <dd> The SQLITE_CONFIG_LOG option is used to configure the SQLite
; global [error log].
; (^The SQLITE_CONFIG_LOG option takes two arguments: a pointer to a
; function with a call signature of void(*)(void*,int,const char*),
; and a pointer to void. ^If the function pointer is not NULL, it is
; invoked by [sqlite3_log()] to process each logging event. ^If the
; function pointer is NULL, the [sqlite3_log()] interface becomes a no-op.
; ^The void pointer that is the second argument to SQLITE_CONFIG_LOG is
; passed through as the first parameter to the application-defined logger
; function whenever that function is invoked. ^The second parameter to
; the logger function is a copy of the first parameter to the corresponding
; [sqlite3_log()] call and is intended to be a [result code] or an
; [extended result code]. ^The third parameter passed to the logger is
; log message after formatting via [sqlite3_snprintf()].
; The SQLite logging interface is not reentrant; the logger function
; supplied by the application must not invoke any SQLite interface.
; In a multi-threaded application, the application-defined logger
; function must be threadsafe. </dd>
;
; [[SQLITE_CONFIG_URI]] <dt>SQLITE_CONFIG_URI
; <dd>^(The SQLITE_CONFIG_URI option takes a single argument of type int.
; If non-zero, then URI handling is globally enabled. If the parameter is zero,
; then URI handling is globally disabled.)^ ^If URI handling is globally
; enabled, all filenames passed to [sqlite3_open()], [sqlite3_open_v2()],
; [sqlite3_open16()] or
; specified as part of [ATTACH] commands are interpreted as URIs, regardless
; of whether or not the [SQLITE_OPEN_URI] flag is set when the database
; connection is opened. ^If it is globally disabled, filenames are
; only interpreted as URIs if the SQLITE_OPEN_URI flag is set when the
; database connection is opened. ^(By default, URI handling is globally
; disabled. The default value may be changed by compiling with the
; [SQLITE_USE_URI] symbol defined.)^
;
; [[SQLITE_CONFIG_COVERING_INDEX_SCAN]] <dt>SQLITE_CONFIG_COVERING_INDEX_SCAN
; <dd>^The SQLITE_CONFIG_COVERING_INDEX_SCAN option takes a single integer
; argument which is interpreted as a boolean in order to enable or disable
; the use of covering indices for full table scans in the query optimizer.
; ^The default setting is determined
; by the [SQLITE_ALLOW_COVERING_INDEX_SCAN] compile-time option, or is "on"
; if that compile-time option is omitted.
; The ability to disable the use of covering indices for full table scans
; is because some incorrectly coded legacy applications might malfunction
; when the optimization is enabled. Providing the ability to
; disable the optimization allows the older, buggy application code to work
; without change even with newer versions of SQLite.
;
; [[SQLITE_CONFIG_PCACHE]] [[SQLITE_CONFIG_GETPCACHE]]
; <dt>SQLITE_CONFIG_PCACHE and SQLITE_CONFIG_GETPCACHE
; <dd> These options are obsolete and should not be used by new code.
; They are retained for backwards compatibility but are now no-ops.
; </dd>
;
; [[SQLITE_CONFIG_SQLLOG]]
; <dt>SQLITE_CONFIG_SQLLOG
; <dd>This option is only available if sqlite is compiled with the
; [SQLITE_ENABLE_SQLLOG] pre-processor macro defined. The first argument should
; be a pointer to a function of type void(*)(void*,sqlite3*,const char*, int).
; The second should be of type (void*). The callback is invoked by the library
; in three separate circumstances, identified by the value passed as the
; fourth parameter. If the fourth parameter is 0, then the database connection
; passed as the second argument has just been opened. The third argument
; points to a buffer containing the name of the main database file. If the
; fourth parameter is 1, then the SQL statement that the third parameter
; points to has just been executed. Or, if the fourth parameter is 2, then
; the connection being passed as the second parameter is being closed. The
; third parameter is passed NULL In this case. An example of using this
; configuration option can be seen in the "test_sqllog.c" source file in
; the canonical SQLite source tree.</dd>
;
; [[SQLITE_CONFIG_MMAP_SIZE]]
; <dt>SQLITE_CONFIG_MMAP_SIZE
; <dd>^SQLITE_CONFIG_MMAP_SIZE takes two 64-bit integer (sqlite3_int64) values
; that are the default mmap size limit (the default setting for
; [PRAGMA mmap_size]) and the maximum allowed mmap size limit.
; ^The default setting can be overridden by each database connection using
; either the [PRAGMA mmap_size] command, or by using the
; [SQLITE_FCNTL_MMAP_SIZE] file control. ^(The maximum allowed mmap size
; will be silently truncated if necessary so that it does not exceed the
; compile-time maximum mmap size set by the
; [SQLITE_MAX_MMAP_SIZE] compile-time option.)^
; ^If either argument to this option is negative, then that argument is
; changed to its compile-time default.
;
; [[SQLITE_CONFIG_WIN32_HEAPSIZE]]
; <dt>SQLITE_CONFIG_WIN32_HEAPSIZE
; <dd>^The SQLITE_CONFIG_WIN32_HEAPSIZE option is only available if SQLite is
; compiled for Windows with the [SQLITE_WIN32_MALLOC] pre-processor macro
; defined. ^SQLITE_CONFIG_WIN32_HEAPSIZE takes a 32-bit unsigned integer value
; that specifies the maximum size of the created heap.
;
; [[SQLITE_CONFIG_PCACHE_HDRSZ]]
; <dt>SQLITE_CONFIG_PCACHE_HDRSZ
; <dd>^The SQLITE_CONFIG_PCACHE_HDRSZ option takes a single parameter which
; is a pointer to an integer and writes into that integer the number of extra
; bytes per page required for each page in [SQLITE_CONFIG_PAGECACHE].
; The amount of extra space required can change depending on the compiler,
; target platform, and SQLite version.
;
; [[SQLITE_CONFIG_PMASZ]]
; <dt>SQLITE_CONFIG_PMASZ
; <dd>^The SQLITE_CONFIG_PMASZ option takes a single parameter which
; is an unsigned integer and sets the "Minimum PMA Size" for the multithreaded
; sorter to that integer. The default minimum PMA Size is set by the
; [SQLITE_SORTER_PMASZ] compile-time option. New threads are launched
; to help with sort operations when multithreaded sorting
; is enabled (using the [PRAGMA threads] command) and the amount of content
; to be sorted exceeds the page size times the minimum of the
; [PRAGMA cache_size] setting and this value.
;
; [[SQLITE_CONFIG_STMTJRNL_SPILL]]
; <dt>SQLITE_CONFIG_STMTJRNL_SPILL
; <dd>^The SQLITE_CONFIG_STMTJRNL_SPILL option takes a single parameter which
; becomes the [statement journal] spill-to-disk threshold.
; [Statement journals] are held in memory until their size (in bytes)
; exceeds this threshold, at which point they are written to disk.
; Or if the threshold is -1, statement journals are always held
; exclusively in memory.
; Since many statement journals never become large, setting the spill
; threshold to a value such as 64KiB can greatly reduce the amount of
; I/O required to support statement rollback.
; The default value for this setting is controlled by the
; [SQLITE_STMTJRNL_SPILL] compile-time option.
; </dl>
#define SQLITE_CONFIG_SINGLETHREAD 1 ; nil
#define SQLITE_CONFIG_MULTITHREAD 2 ; nil
#define SQLITE_CONFIG_SERIALIZED 3 ; nil
#define SQLITE_CONFIG_MALLOC 4 ; sqlite3_mem_methods*
#define SQLITE_CONFIG_GETMALLOC 5 ; sqlite3_mem_methods*
#define SQLITE_CONFIG_SCRATCH 6 ; void*, int sz, int N
#define SQLITE_CONFIG_PAGECACHE 7 ; void*, int sz, int N
#define SQLITE_CONFIG_HEAP 8 ; void*, int nByte, int min
#define SQLITE_CONFIG_MEMSTATUS 9 ; boolean
#define SQLITE_CONFIG_MUTEX 10 ; sqlite3_mutex_methods*
#define SQLITE_CONFIG_GETMUTEX 11 ; sqlite3_mutex_methods*
; previously SQLITE_CONFIG_CHUNKALLOC 12 which is now unused.
#define SQLITE_CONFIG_LOOKASIDE 13 ; int int
#define SQLITE_CONFIG_PCACHE 14 ; no-op
#define SQLITE_CONFIG_GETPCACHE 15 ; no-op
#define SQLITE_CONFIG_LOG 16 ; xFunc, void*
#define SQLITE_CONFIG_URI 17 ; int
#define SQLITE_CONFIG_PCACHE2 18 ; sqlite3_pcache_methods2*
#define SQLITE_CONFIG_GETPCACHE2 19 ; sqlite3_pcache_methods2*
#define SQLITE_CONFIG_COVERING_INDEX_SCAN 20 ; int
#define SQLITE_CONFIG_SQLLOG 21 ; xSqllog, void*
#define SQLITE_CONFIG_MMAP_SIZE 22 ; sqlite3_int64, sqlite3_int64
#define SQLITE_CONFIG_WIN32_HEAPSIZE 23 ; int nByte
#define SQLITE_CONFIG_PCACHE_HDRSZ 24 ; int *psz
#define SQLITE_CONFIG_PMASZ 25 ; unsigned int szPma
#define SQLITE_CONFIG_STMTJRNL_SPILL 26 ; int nByte
;- Database Connection Configuration Options
;
; These constants are the available integer configuration options that
; can be passed as the second argument to the [sqlite3_db_config()] interface.
;
; New configuration options may be added in future releases of SQLite.
; Existing configuration options might be discontinued. Applications
; should check the return code from [sqlite3_db_config()] to make sure that
; the call worked. ^The [sqlite3_db_config()] interface will return a
; non-zero [error code] if a discontinued or unsupported configuration option
; is invoked.
;
; <dl>
; <dt>SQLITE_DBCONFIG_LOOKASIDE</dt>
; <dd> ^This option takes three additional arguments that determine the
; [lookaside memory allocator] configuration for the [database connection].
; ^The first argument (the third parameter to [sqlite3_db_config()] is a
; pointer to a memory buffer to use for lookaside memory.
; ^The first argument after the SQLITE_DBCONFIG_LOOKASIDE verb
; may be NULL in which case SQLite will allocate the
; lookaside buffer itself using [sqlite3_malloc()]. ^The second argument is the
; size of each lookaside buffer slot. ^The third argument is the number of
; slots. The size of the buffer in the first argument must be greater than
; or equal to the product of the second and third arguments. The buffer
; must be aligned to an 8-byte boundary. ^If the second argument to
; SQLITE_DBCONFIG_LOOKASIDE is not a multiple of 8, it is internally
; rounded down to the next smaller multiple of 8. ^(The lookaside memory
; configuration for a database connection can only be changed when that
; connection is not currently using lookaside memory, or in other words
; when the "current value" returned by
; [sqlite3_db_status](D,[SQLITE_CONFIG_LOOKASIDE],...) is zero.
; Any attempt to change the lookaside memory configuration when lookaside
; memory is in use leaves the configuration unchanged and returns
; [SQLITE_BUSY].)^</dd>
;
; <dt>SQLITE_DBCONFIG_ENABLE_FKEY</dt>
; <dd> ^This option is used to enable or disable the enforcement of
; [foreign key constraints]. There should be two additional arguments.
; The first argument is an integer which is 0 to disable FK enforcement,
; positive to enable FK enforcement or negative to leave FK enforcement
; unchanged. The second parameter is a pointer to an integer into which
; is written 0 or 1 to indicate whether FK enforcement is off or on
; following this call. The second parameter may be a NULL pointer, in
; which case the FK enforcement setting is not reported back. </dd>
;
; <dt>SQLITE_DBCONFIG_ENABLE_TRIGGER</dt>
; <dd> ^This option is used to enable or disable [CREATE TRIGGER | triggers].
; There should be two additional arguments.
; The first argument is an integer which is 0 to disable triggers,
; positive to enable triggers or negative to leave the setting unchanged.
; The second parameter is a pointer to an integer into which
; is written 0 or 1 to indicate whether triggers are disabled or enabled
; following this call. The second parameter may be a NULL pointer, in
; which case the trigger setting is not reported back. </dd>
;
; <dt>SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER</dt>
; <dd> ^This option is used to enable or disable the two-argument
; version of the [fts3_tokenizer()] function which is part of the
; [FTS3] full-text search engine extension.
; There should be two additional arguments.
; The first argument is an integer which is 0 to disable fts3_tokenizer() or
; positive to enable fts3_tokenizer() or negative to leave the setting
; unchanged.
; The second parameter is a pointer to an integer into which
; is written 0 or 1 to indicate whether fts3_tokenizer is disabled or enabled
; following this call. The second parameter may be a NULL pointer, in
; which case the new setting is not reported back. </dd>
;
; <dt>SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION</dt>
; <dd> ^This option is used to enable or disable the [sqlite3_load_extension()]
; interface independently of the [load_extension()] SQL function.
; The [sqlite3_enable_load_extension()] API enables or disables both the
; C-API [sqlite3_load_extension()] and the SQL function [load_extension()].
; There should be two additional arguments.
; When the first argument to this interface is 1, then only the C-API is
; enabled and the SQL function remains disabled. If the first argument to
; this interface is 0, then both the C-API and the SQL function are disabled.
; If the first argument is -1, then no changes are made to state of either the
; C-API or the SQL function.
; The second parameter is a pointer to an integer into which
; is written 0 or 1 to indicate whether [sqlite3_load_extension()] interface
; is disabled or enabled following this call. The second parameter may
; be a NULL pointer, in which case the new setting is not reported back.
; </dd>
;
; <dt>SQLITE_DBCONFIG_MAINDBNAME</dt>
; <dd> ^This option is used to change the name of the "main" database
; schema. ^The sole argument is a pointer to a constant UTF8 string
; which will become the new schema name in place of "main". ^SQLite
; does not make a copy of the new main schema name string, so the application
; must ensure that the argument passed into this DBCONFIG option is unchanged
; until after the database connection closes.
; </dd>
;
; <dt>SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE</dt>
; <dd> Usually, when a database in wal mode is closed or detached from a
; database handle, SQLite checks if this will mean that there are now no
; connections at all to the database. If so, it performs a checkpoint
; operation before closing the connection. This option may be used to
; override this behaviour. The first parameter passed to this operation
; is an integer - non-zero to disable checkpoints-on-close, or zero (the
; default) to enable them. The second parameter is a pointer to an integer
; into which is written 0 or 1 to indicate whether checkpoints-on-close
; have been disabled - 0 if they are not disabled, 1 if they are.
; </dd>
;
; </dl>
#define SQLITE_DBCONFIG_MAINDBNAME 1000 ; const char*
#define SQLITE_DBCONFIG_LOOKASIDE 1001 ; void* int int
#define SQLITE_DBCONFIG_ENABLE_FKEY 1002 ; int int*
#define SQLITE_DBCONFIG_ENABLE_TRIGGER 1003 ; int int*
#define SQLITE_DBCONFIG_ENABLE_FTS3_TOKENIZER 1004 ; int int*
#define SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION 1005 ; int int*
#define SQLITE_DBCONFIG_NO_CKPT_ON_CLOSE 1006 ; int int*
;- Authorizer Return Codes
;
; The [sqlite3_set_authorizer | authorizer callback function] must
; return either [SQLITE_OK] or one of these two constants in order
; to signal SQLite whether or not the action is permitted. See the
; [sqlite3_set_authorizer | authorizer documentation] for additional
; information.
;
; Note that SQLITE_IGNORE is also used as a [conflict resolution mode]
; returned from the [sqlite3_vtab_on_conflict()] interface.
#define SQLITE_DENY 1 ; Abort the SQL statement with an error
#define SQLITE_IGNORE 2 ; Don't allow access, but don't generate an error
;- Authorizer Action Codes
;
; The [sqlite3_set_authorizer()] interface registers a callback function
; that is invoked to authorize certain SQL statement actions. The
; second parameter to the callback is an integer code that specifies
; what action is being authorized. These are the integer action codes that
; the authorizer callback may be passed.
;
; These action code values signify what kind of operation is to be
; authorized. The 3rd and 4th parameters to the authorization
; callback function will be parameters or NULL depending on which of these
; codes is used as the second parameter. ^(The 5th parameter to the
; authorizer callback is the name of the database ("main", "temp",
; etc.) if applicable.)^ ^The 6th parameter to the authorizer callback
; is the name of the inner-most trigger or view that is responsible for
; the access attempt or NULL if this access attempt is directly from
; top-level SQL code.
#define SQLITE_CREATE_INDEX 1 ; Index Name Table Name
#define SQLITE_CREATE_TABLE 2 ; Table Name NULL
#define SQLITE_CREATE_TEMP_INDEX 3 ; Index Name Table Name
#define SQLITE_CREATE_TEMP_TABLE 4 ; Table Name NULL
#define SQLITE_CREATE_TEMP_TRIGGER 5 ; Trigger Name Table Name
#define SQLITE_CREATE_TEMP_VIEW 6 ; View Name NULL
#define SQLITE_CREATE_TRIGGER 7 ; Trigger Name Table Name
#define SQLITE_CREATE_VIEW 8 ; View Name NULL
#define SQLITE_DELETE 9 ; Table Name NULL
#define SQLITE_DROP_INDEX 10 ; Index Name Table Name
#define SQLITE_DROP_TABLE 11 ; Table Name NULL
#define SQLITE_DROP_TEMP_INDEX 12 ; Index Name Table Name
#define SQLITE_DROP_TEMP_TABLE 13 ; Table Name NULL
#define SQLITE_DROP_TEMP_TRIGGER 14 ; Trigger Name Table Name
#define SQLITE_DROP_TEMP_VIEW 15 ; View Name NULL
#define SQLITE_DROP_TRIGGER 16 ; Trigger Name Table Name
#define SQLITE_DROP_VIEW 17 ; View Name NULL
#define SQLITE_INSERT 18 ; Table Name NULL
#define SQLITE_PRAGMA 19 ; Pragma Name 1st arg or NULL
#define SQLITE_READ 20 ; Table Name Column Name
#define SQLITE_SELECT 21 ; NULL NULL
#define SQLITE_TRANSACTION 22 ; Operation NULL
#define SQLITE_UPDATE 23 ; Table Name Column Name
#define SQLITE_ATTACH 24 ; Filename NULL
#define SQLITE_DETACH 25 ; Database Name NULL
#define SQLITE_ALTER_TABLE 26 ; Database Name Table Name
#define SQLITE_REINDEX 27 ; Index Name NULL
#define SQLITE_ANALYZE 28 ; Table Name NULL
#define SQLITE_CREATE_VTABLE 29 ; Table Name Module Name
#define SQLITE_DROP_VTABLE 30 ; Table Name Module Name
#define SQLITE_FUNCTION 31 ; NULL Function Name
#define SQLITE_SAVEPOINT 32 ; Operation Savepoint Name
#define SQLITE_COPY 0 ; No longer used
#define SQLITE_RECURSIVE 33 ; NULL NULL
;- SQL Trace Event Codes
; KEYWORDS: SQLITE_TRACE
;
; These constants identify classes of events that can be monitored
; using the [sqlite3_trace_v2()] tracing logic. The third argument
; to [sqlite3_trace_v2()] is an OR-ed combination of one or more of
; the following constants. ^The first argument to the trace callback
; is one of the following constants.
;
; New tracing constants may be added in future releases.
;
; ^A trace callback has four arguments: xCallback(T,C,P,X).
; ^The T argument is one of the integer type codes above.
; ^The C argument is a copy of the context pointer passed in as the
; fourth argument to [sqlite3_trace_v2()].
; The P and X arguments are pointers whose meanings depend on T.
;
; <dl>
; [[SQLITE_TRACE_STMT]] <dt>SQLITE_TRACE_STMT</dt>
; <dd>^An SQLITE_TRACE_STMT callback is invoked when a prepared statement
; first begins running and possibly at other times during the
; execution of the prepared statement, such as at the start of each
; trigger subprogram. ^The P argument is a pointer to the
; [prepared statement]. ^The X argument is a pointer to a string which
; is the unexpanded SQL text of the prepared statement or an SQL comment
; that indicates the invocation of a trigger. ^The callback can compute
; the same text that would have been returned by the legacy [sqlite3_trace()]
; interface by using the X argument when X begins with "--" and invoking
; [sqlite3_expanded_sql(P)] otherwise.
;
; [[SQLITE_TRACE_PROFILE]] <dt>SQLITE_TRACE_PROFILE</dt>
; <dd>^An SQLITE_TRACE_PROFILE callback provides approximately the same
; information as is provided by the [sqlite3_profile()] callback.
; ^The P argument is a pointer to the [prepared statement] and the
; X argument points to a 64-bit integer which is the estimated of
; the number of nanosecond that the prepared statement took to run.
; ^The SQLITE_TRACE_PROFILE callback is invoked when the statement finishes.
;
; [[SQLITE_TRACE_ROW]] <dt>SQLITE_TRACE_ROW</dt>
; <dd>^An SQLITE_TRACE_ROW callback is invoked whenever a prepared
; statement generates a single row of result.
; ^The P argument is a pointer to the [prepared statement] and the
; X argument is unused.
;
; [[SQLITE_TRACE_CLOSE]] <dt>SQLITE_TRACE_CLOSE</dt>
; <dd>^An SQLITE_TRACE_CLOSE callback is invoked when a database
; connection closes.
; ^The P argument is a pointer to the [database connection] object
; and the X argument is unused.
; </dl>
#define SQLITE_TRACE_STMT 01h
#define SQLITE_TRACE_PROFILE 02h
#define SQLITE_TRACE_ROW 04h
#define SQLITE_TRACE_CLOSE 08h
;- Run-Time Limit Categories
; KEYWORDS: {limit category} {*limit categories}
;
; These constants define various performance limits
; that can be lowered at run-time using [sqlite3_limit()].
; The synopsis of the meanings of the various limits is shown below.
; Additional information is available at [limits | Limits in SQLite].
;
; <dl>
; [[SQLITE_LIMIT_LENGTH]] ^(<dt>SQLITE_LIMIT_LENGTH</dt>
; <dd>The maximum size of any string or BLOB or table row, in bytes.<dd>)^
;
; [[SQLITE_LIMIT_SQL_LENGTH]] ^(<dt>SQLITE_LIMIT_SQL_LENGTH</dt>
; <dd>The maximum length of an SQL statement, in bytes.</dd>)^
;
; [[SQLITE_LIMIT_COLUMN]] ^(<dt>SQLITE_LIMIT_COLUMN</dt>
; <dd>The maximum number of columns in a table definition or in the
; result set of a [SELECT] or the maximum number of columns in an index
; or in an ORDER BY or GROUP BY clause.</dd>)^
;
; [[SQLITE_LIMIT_EXPR_DEPTH]] ^(<dt>SQLITE_LIMIT_EXPR_DEPTH</dt>
; <dd>The maximum depth of the parse tree on any expression.</dd>)^
;
; [[SQLITE_LIMIT_COMPOUND_SELECT]] ^(<dt>SQLITE_LIMIT_COMPOUND_SELECT</dt>
; <dd>The maximum number of terms in a compound SELECT statement.</dd>)^
;
; [[SQLITE_LIMIT_VDBE_OP]] ^(<dt>SQLITE_LIMIT_VDBE_OP</dt>
; <dd>The maximum number of instructions in a virtual machine program
; used to implement an SQL statement. This limit is not currently
; enforced, though that might be added in some future release of
; SQLite.</dd>)^
;
; [[SQLITE_LIMIT_FUNCTION_ARG]] ^(<dt>SQLITE_LIMIT_FUNCTION_ARG</dt>
; <dd>The maximum number of arguments on a function.</dd>)^
;
; [[SQLITE_LIMIT_ATTACHED]] ^(<dt>SQLITE_LIMIT_ATTACHED</dt>
; <dd>The maximum number of [ATTACH | attached databases].)^</dd>
;
; [[SQLITE_LIMIT_LIKE_PATTERN_LENGTH]]
; ^(<dt>SQLITE_LIMIT_LIKE_PATTERN_LENGTH</dt>
; <dd>The maximum length of the pattern argument to the [LIKE] or
; [GLOB] operators.</dd>)^
;
; [[SQLITE_LIMIT_VARIABLE_NUMBER]]
; ^(<dt>SQLITE_LIMIT_VARIABLE_NUMBER</dt>
; <dd>The maximum index number of any [parameter] in an SQL statement.)^
;
; [[SQLITE_LIMIT_TRIGGER_DEPTH]] ^(<dt>SQLITE_LIMIT_TRIGGER_DEPTH</dt>
; <dd>The maximum depth of recursion for triggers.</dd>)^
;
; [[SQLITE_LIMIT_WORKER_THREADS]] ^(<dt>SQLITE_LIMIT_WORKER_THREADS</dt>
; <dd>The maximum number of auxiliary worker threads that a single
; [prepared statement] may start.</dd>)^
; </dl>
#define SQLITE_LIMIT_LENGTH 0
#define SQLITE_LIMIT_SQL_LENGTH 1
#define SQLITE_LIMIT_COLUMN 2
#define SQLITE_LIMIT_EXPR_DEPTH 3
#define SQLITE_LIMIT_COMPOUND_SELECT 4
#define SQLITE_LIMIT_VDBE_OP 5
#define SQLITE_LIMIT_FUNCTION_ARG 6
#define SQLITE_LIMIT_ATTACHED 7
#define SQLITE_LIMIT_LIKE_PATTERN_LENGTH 8
#define SQLITE_LIMIT_VARIABLE_NUMBER 9
#define SQLITE_LIMIT_TRIGGER_DEPTH 10
#define SQLITE_LIMIT_WORKER_THREADS 11
;- Fundamental Datatypes
; KEYWORDS: SQLITE_TEXT
;
; ^(Every value in SQLite has one of five fundamental datatypes:
;
; <ul>
; <li> 64-bit signed integer
; <li> 64-bit IEEE floating point number
; <li> string
; <li> BLOB
; <li> NULL
; </ul>)^
;
; These constants are codes for each of those types.
;
; Note that the SQLITE_TEXT constant was also used in SQLite version 2
; for a completely different meaning. Software that links against both
; SQLite version 2 and SQLite version 3 should use SQLITE3_TEXT, not
; SQLITE_TEXT.
#define SQLITE_INTEGER 1
#define SQLITE_FLOAT 2
#define SQLITE_BLOB 4
#define SQLITE_NULL 5
#define SQLITE3_TEXT 3
;- Text Encodings
;
; These constant define integer codes that represent the various
; text encodings supported by SQLite.
#define SQLITE_UTF8 1 ; IMP: R-37514-35566
#define SQLITE_UTF16LE 2 ; IMP: R-03371-37637
#define SQLITE_UTF16BE 3 ; IMP: R-51971-34154
#define SQLITE_UTF16 4 ; Use native byte order
#define SQLITE_ANY 5 ; Deprecated
#define SQLITE_UTF16_ALIGNED 8 ; sqlite3_create_collation only
;- Function Flags
;
; These constants may be ORed together with the
; [SQLITE_UTF8 | preferred text encoding] as the fourth argument
; to [sqlite3_create_function()], [sqlite3_create_function16()], or
; [sqlite3_create_function_v2()].
#define SQLITE_DETERMINISTIC 0800h
;- Constants Defining Special Destructor Behavior
;
; These are special values for the destructor that is passed in as the
; final argument to routines like [sqlite3_result_blob()]. ^If the destructor
; argument is SQLITE_STATIC, it means that the content pointer is constant
; and will never change. It does not need to be destroyed. ^The
; SQLITE_TRANSIENT value means that the content will likely change in
; the near future and that SQLite should make its own private copy of
; the content before returning.
;
; The typedef is necessary to work around problems in certain
; C++ compilers.
#define SQLITE_STATIC 0 ;((sqlite3_destructor_type)0)
#define SQLITE_TRANSIENT -1 ;((sqlite3_destructor_type)-1)
;- Virtual Table Scan Flags
#define SQLITE_INDEX_SCAN_UNIQUE 1 ; Scan visits at most 1 row
;- Virtual Table Constraint Operator Codes
;
; These macros defined the allowed values for the
; [sqlite3_index_info].aConstraint[].op field. Each value represents
; an operator that is part of a constraint term in the wHERE clause of
; a query that uses a [virtual table].
#define SQLITE_INDEX_CONSTRAINT_EQ 2
#define SQLITE_INDEX_CONSTRAINT_GT 4
#define SQLITE_INDEX_CONSTRAINT_LE 8
#define SQLITE_INDEX_CONSTRAINT_LT 16
#define SQLITE_INDEX_CONSTRAINT_GE 32
#define SQLITE_INDEX_CONSTRAINT_MATCH 64
#define SQLITE_INDEX_CONSTRAINT_LIKE 65
#define SQLITE_INDEX_CONSTRAINT_GLOB 66
#define SQLITE_INDEX_CONSTRAINT_REGEXP 67
;- Mutex Types
;
; The [sqlite3_mutex_alloc()] interface takes a single argument
; which is one of these integer constants.
;
; The set of static mutexes may change from one SQLite release to the
; next. Applications that override the built-in mutex logic must be
; prepared to accommodate additional static mutexes.
#define SQLITE_MUTEX_FAST 0
#define SQLITE_MUTEX_RECURSIVE 1
#define SQLITE_MUTEX_STATIC_MASTER 2
#define SQLITE_MUTEX_STATIC_MEM 3 ; sqlite3_malloc()
#define SQLITE_MUTEX_STATIC_MEM2 4 ; NOT USED
#define SQLITE_MUTEX_STATIC_OPEN 4 ; sqlite3BtreeOpen()
#define SQLITE_MUTEX_STATIC_PRNG 5 ; sqlite3_randomness()
#define SQLITE_MUTEX_STATIC_LRU 6 ; lru page list
#define SQLITE_MUTEX_STATIC_LRU2 7 ; NOT USED
#define SQLITE_MUTEX_STATIC_PMEM 7 ; sqlite3PageMalloc()
#define SQLITE_MUTEX_STATIC_APP1 8 ; For use by application
#define SQLITE_MUTEX_STATIC_APP2 9 ; For use by application
#define SQLITE_MUTEX_STATIC_APP3 10 ; For use by application
#define SQLITE_MUTEX_STATIC_VFS1 11 ; For use by built-in VFS
#define SQLITE_MUTEX_STATIC_VFS2 12 ; For use by extension VFS
#define SQLITE_MUTEX_STATIC_VFS3 13 ; For use by application VFS
;- Testing Interface Operation Codes
;
; These constants are the valid operation code parameters used
; as the first argument to [sqlite3_test_control()].
;
; These parameters and their meanings are subject to change
; without notice. These values are for testing purposes only.
; Applications should not use any of these parameters or the
; [sqlite3_test_control()] interface.
#define SQLITE_TESTCTRL_FIRST 5
#define SQLITE_TESTCTRL_PRNG_SAVE 5
#define SQLITE_TESTCTRL_PRNG_RESTORE 6
#define SQLITE_TESTCTRL_PRNG_RESET 7
#define SQLITE_TESTCTRL_BITVEC_TEST 8
#define SQLITE_TESTCTRL_FAULT_INSTALL 9
#define SQLITE_TESTCTRL_BENIGN_MALLOC_HOOKS 10
#define SQLITE_TESTCTRL_PENDING_BYTE 11
#define SQLITE_TESTCTRL_ASSERT 12
#define SQLITE_TESTCTRL_ALWAYS 13
#define SQLITE_TESTCTRL_RESERVE 14
#define SQLITE_TESTCTRL_OPTIMIZATIONS 15
#define SQLITE_TESTCTRL_ISKEYWORD 16
#define SQLITE_TESTCTRL_SCRATCHMALLOC 17
#define SQLITE_TESTCTRL_LOCALTIME_FAULT 18
#define SQLITE_TESTCTRL_EXPLAIN_STMT 19 ; NOT USED
#define SQLITE_TESTCTRL_ONCE_RESET_THRESHOLD 19
#define SQLITE_TESTCTRL_NEVER_CORRUPT 20
#define SQLITE_TESTCTRL_VDBE_COVERAGE 21
#define SQLITE_TESTCTRL_BYTEORDER 22
#define SQLITE_TESTCTRL_ISINIT 23
#define SQLITE_TESTCTRL_SORTER_MMAP 24
#define SQLITE_TESTCTRL_IMPOSTER 25
#define SQLITE_TESTCTRL_LAST 25
;- Status Parameters
; KEYWORDS: {status parameters}
;
; These integer constants designate various run-time status parameters
; that can be returned by [sqlite3_status()].
;
; <dl>
; [[SQLITE_STATUS_MEMORY_USED]] ^(<dt>SQLITE_STATUS_MEMORY_USED</dt>
; <dd>This parameter is the current amount of memory checked out
; using [sqlite3_malloc()], either directly or indirectly. The
; figure includes calls made to [sqlite3_malloc()] by the application
; and internal memory usage by the SQLite library. Scratch memory
; controlled by [SQLITE_CONFIG_SCRATCH] and auxiliary page-cache
; memory controlled by [SQLITE_CONFIG_PAGECACHE] is not included in
; this parameter. The amount returned is the sum of the allocation
; sizes as reported by the xSize method in [sqlite3_mem_methods].</dd>)^
;
; [[SQLITE_STATUS_MALLOC_SIZE]] ^(<dt>SQLITE_STATUS_MALLOC_SIZE</dt>
; <dd>This parameter records the largest memory allocation request
; handed to [sqlite3_malloc()] or [sqlite3_realloc()] (or their
; internal equivalents). Only the value returned in the
; *pHighwater parameter to [sqlite3_status()] is of interest.
; The value written into the *pCurrent parameter is undefined.</dd>)^
;
; [[SQLITE_STATUS_MALLOC_COUNT]] ^(<dt>SQLITE_STATUS_MALLOC_COUNT</dt>
; <dd>This parameter records the number of separate memory allocations
; currently checked out.</dd>)^
;
; [[SQLITE_STATUS_PAGECACHE_USED]] ^(<dt>SQLITE_STATUS_PAGECACHE_USED</dt>
; <dd>This parameter returns the number of pages used out of the
; [pagecache memory allocator] that was configured using
; [SQLITE_CONFIG_PAGECACHE]. The
; value returned is in pages, not in bytes.</dd>)^
;
; [[SQLITE_STATUS_PAGECACHE_OVERFLOW]]
; ^(<dt>SQLITE_STATUS_PAGECACHE_OVERFLOW</dt>
; <dd>This parameter returns the number of bytes of page cache
; allocation which could not be satisfied by the [SQLITE_CONFIG_PAGECACHE]
; buffer and where forced to overflow to [sqlite3_malloc()]. The
; returned value includes allocations that overflowed because they
; where too large (they were larger than the "sz" parameter to
; [SQLITE_CONFIG_PAGECACHE]) and allocations that overflowed because
; no space was left in the page cache.</dd>)^
;
; [[SQLITE_STATUS_PAGECACHE_SIZE]] ^(<dt>SQLITE_STATUS_PAGECACHE_SIZE</dt>
; <dd>This parameter records the largest memory allocation request
; handed to [pagecache memory allocator]. Only the value returned in the
; *pHighwater parameter to [sqlite3_status()] is of interest.
; The value written into the *pCurrent parameter is undefined.</dd>)^
;
; [[SQLITE_STATUS_SCRATCH_USED]] ^(<dt>SQLITE_STATUS_SCRATCH_USED</dt>
; <dd>This parameter returns the number of allocations used out of the
; [scratch memory allocator] configured using
; [SQLITE_CONFIG_SCRATCH]. The value returned is in allocations, not
; in bytes. Since a single thread may only have one scratch allocation
; outstanding at time, this parameter also reports the number of threads
; using scratch memory at the same time.</dd>)^
;
; [[SQLITE_STATUS_SCRATCH_OVERFLOW]] ^(<dt>SQLITE_STATUS_SCRATCH_OVERFLOW</dt>
; <dd>This parameter returns the number of bytes of scratch memory
; allocation which could not be satisfied by the [SQLITE_CONFIG_SCRATCH]
; buffer and where forced to overflow to [sqlite3_malloc()]. The values
; returned include overflows because the requested allocation was too
; larger (that is, because the requested allocation was larger than the
; "sz" parameter to [SQLITE_CONFIG_SCRATCH]) and because no scratch buffer
; slots were available.
; </dd>)^
;
; [[SQLITE_STATUS_SCRATCH_SIZE]] ^(<dt>SQLITE_STATUS_SCRATCH_SIZE</dt>
; <dd>This parameter records the largest memory allocation request
; handed to [scratch memory allocator]. Only the value returned in the
; *pHighwater parameter to [sqlite3_status()] is of interest.
; The value written into the *pCurrent parameter is undefined.</dd>)^
;
; [[SQLITE_STATUS_PARSER_STACK]] ^(<dt>SQLITE_STATUS_PARSER_STACK</dt>
; <dd>The *pHighwater parameter records the deepest parser stack.
; The *pCurrent value is undefined. The *pHighwater value is only
; meaningful if SQLite is compiled with [YYTRACKMAXSTACKDEPTH].</dd>)^
; </dl>
;
; New status parameters may be added from time to time.
#define SQLITE_STATUS_MEMORY_USED 0
#define SQLITE_STATUS_PAGECACHE_USED 1
#define SQLITE_STATUS_PAGECACHE_OVERFLOW 2
#define SQLITE_STATUS_SCRATCH_USED 3
#define SQLITE_STATUS_SCRATCH_OVERFLOW 4
#define SQLITE_STATUS_MALLOC_SIZE 5
#define SQLITE_STATUS_PARSER_STACK 6
#define SQLITE_STATUS_PAGECACHE_SIZE 7
#define SQLITE_STATUS_SCRATCH_SIZE 8
#define SQLITE_STATUS_MALLOC_COUNT 9
;- Status Parameters for database connections
; KEYWORDS: {SQLITE_DBSTATUS options}
;
; These constants are the available integer "verbs" that can be passed as
; the second argument to the [sqlite3_db_status()] interface.
;
; New verbs may be added in future releases of SQLite. Existing verbs
; might be discontinued. Applications should check the return code from
; [sqlite3_db_status()] to make sure that the call worked.
; The [sqlite3_db_status()] interface will return a non-zero error code
; if a discontinued or unsupported verb is invoked.
;
; <dl>
; [[SQLITE_DBSTATUS_LOOKASIDE_USED]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_USED</dt>
; <dd>This parameter returns the number of lookaside memory slots currently
; checked out.</dd>)^
;
; [[SQLITE_DBSTATUS_LOOKASIDE_HIT]] ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_HIT</dt>
; <dd>This parameter returns the number malloc attempts that were
; satisfied using lookaside memory. Only the high-water value is meaningful;
; the current value is always zero.)^
;
; [[SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE]]
; ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE</dt>
; <dd>This parameter returns the number malloc attempts that might have
; been satisfied using lookaside memory but failed due to the amount of
; memory requested being larger than the lookaside slot size.
; Only the high-water value is meaningful;
; the current value is always zero.)^
;
; [[SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL]]
; ^(<dt>SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL</dt>
; <dd>This parameter returns the number malloc attempts that might have
; been satisfied using lookaside memory but failed due to all lookaside
; memory already being in use.
; Only the high-water value is meaningful;
; the current value is always zero.)^
;
; [[SQLITE_DBSTATUS_CACHE_USED]] ^(<dt>SQLITE_DBSTATUS_CACHE_USED</dt>
; <dd>This parameter returns the approximate number of bytes of heap
; memory used by all pager caches associated with the database connection.)^
; ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_USED is always 0.
;
; [[SQLITE_DBSTATUS_CACHE_USED_SHARED]]
; ^(<dt>SQLITE_DBSTATUS_CACHE_USED_SHARED</dt>
; <dd>This parameter is similar to DBSTATUS_CACHE_USED, except that if a
; pager cache is shared between two or more connections the bytes of heap
; memory used by that pager cache is divided evenly between the attached
; connections.)^ In other words, if none of the pager caches associated
; with the database connection are shared, this request returns the same
; value as DBSTATUS_CACHE_USED. Or, if one or more or the pager caches are
; shared, the value returned by this call will be smaller than that returned
; by DBSTATUS_CACHE_USED. ^The highwater mark associated with
; SQLITE_DBSTATUS_CACHE_USED_SHARED is always 0.
;
; [[SQLITE_DBSTATUS_SCHEMA_USED]] ^(<dt>SQLITE_DBSTATUS_SCHEMA_USED</dt>
; <dd>This parameter returns the approximate number of bytes of heap
; memory used to store the schema for all databases associated
; with the connection - main, temp, and any [ATTACH]-ed databases.)^
; ^The full amount of memory used by the schemas is reported, even if the
; schema memory is shared with other database connections due to
; [shared cache mode] being enabled.
; ^The highwater mark associated with SQLITE_DBSTATUS_SCHEMA_USED is always 0.
;
; [[SQLITE_DBSTATUS_STMT_USED]] ^(<dt>SQLITE_DBSTATUS_STMT_USED</dt>
; <dd>This parameter returns the approximate number of bytes of heap
; and lookaside memory used by all prepared statements associated with
; the database connection.)^
; ^The highwater mark associated with SQLITE_DBSTATUS_STMT_USED is always 0.
; </dd>
;
; [[SQLITE_DBSTATUS_CACHE_HIT]] ^(<dt>SQLITE_DBSTATUS_CACHE_HIT</dt>
; <dd>This parameter returns the number of pager cache hits that have
; occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_HIT
; is always 0.
; </dd>
;
; [[SQLITE_DBSTATUS_CACHE_MISS]] ^(<dt>SQLITE_DBSTATUS_CACHE_MISS</dt>
; <dd>This parameter returns the number of pager cache misses that have
; occurred.)^ ^The highwater mark associated with SQLITE_DBSTATUS_CACHE_MISS
; is always 0.
; </dd>
;
; [[SQLITE_DBSTATUS_CACHE_WRITE]] ^(<dt>SQLITE_DBSTATUS_CACHE_WRITE</dt>
; <dd>This parameter returns the number of dirty cache entries that have
; been written to disk. Specifically, the number of pages written to the
; wal file in wal mode databases, or the number of pages written to the
; database file in rollback mode databases. Any pages written as part of
; transaction rollback or database recovery operations are not included.
; If an IO or other error occurs while writing a page to disk, the effect
; on subsequent SQLITE_DBSTATUS_CACHE_WRITE requests is undefined.)^ ^The
; highwater mark associated with SQLITE_DBSTATUS_CACHE_WRITE is always 0.
; </dd>
;
; [[SQLITE_DBSTATUS_DEFERRED_FKS]] ^(<dt>SQLITE_DBSTATUS_DEFERRED_FKS</dt>
; <dd>This parameter returns zero for the current value if and only if
; all foreign key constraints (deferred or immediate) have been
; resolved.)^ ^The highwater mark is always 0.
; </dd>
; </dl>
#define SQLITE_DBSTATUS_LOOKASIDE_USED 0
#define SQLITE_DBSTATUS_CACHE_USED 1
#define SQLITE_DBSTATUS_SCHEMA_USED 2
#define SQLITE_DBSTATUS_STMT_USED 3
#define SQLITE_DBSTATUS_LOOKASIDE_HIT 4
#define SQLITE_DBSTATUS_LOOKASIDE_MISS_SIZE 5
#define SQLITE_DBSTATUS_LOOKASIDE_MISS_FULL 6
#define SQLITE_DBSTATUS_CACHE_HIT 7
#define SQLITE_DBSTATUS_CACHE_MISS 8
#define SQLITE_DBSTATUS_CACHE_WRITE 9
#define SQLITE_DBSTATUS_DEFERRED_FKS 10
#define SQLITE_DBSTATUS_CACHE_USED_SHARED 11
#define SQLITE_DBSTATUS_MAX 11 ; Largest defined DBSTATUS
;- Status Parameters for prepared statements
; KEYWORDS: {SQLITE_STMTSTATUS counter} {SQLITE_STMTSTATUS counters}
;
; These preprocessor macros define integer codes that name counter
; values associated with the [sqlite3_stmt_status()] interface.
; The meanings of the various counters are as follows:
;
; <dl>
; [[SQLITE_STMTSTATUS_FULLSCAN_STEP]] <dt>SQLITE_STMTSTATUS_FULLSCAN_STEP</dt>
; <dd>^This is the number of times that SQLite has stepped forward in
; a table as part of a full table scan. Large numbers for this counter
; may indicate opportunities for performance improvement through
; careful use of indices.</dd>
;
; [[SQLITE_STMTSTATUS_SORT]] <dt>SQLITE_STMTSTATUS_SORT</dt>
; <dd>^This is the number of sort operations that have occurred.
; A non-zero value in this counter may indicate an opportunity to
; improvement performance through careful use of indices.</dd>
;
; [[SQLITE_STMTSTATUS_AUTOINDEX]] <dt>SQLITE_STMTSTATUS_AUTOINDEX</dt>
; <dd>^This is the number of rows inserted into transient indices that
; were created automatically in order to help joins run faster.
; A non-zero value in this counter may indicate an opportunity to
; improvement performance by adding permanent indices that do not
; need to be reinitialized each time the statement is run.</dd>
;
; [[SQLITE_STMTSTATUS_VM_STEP]] <dt>SQLITE_STMTSTATUS_VM_STEP</dt>
; <dd>^This is the number of virtual machine operations executed
; by the prepared statement if that number is less than or equal
; to 2147483647. The number of virtual machine operations can be
; used as a proxy for the total work done by the prepared statement.
; If the number of virtual machine operations exceeds 2147483647
; then the value returned by this statement status code is undefined.
; </dd>
; </dl>
#define SQLITE_STMTSTATUS_FULLSCAN_STEP 1
#define SQLITE_STMTSTATUS_SORT 2
#define SQLITE_STMTSTATUS_AUTOINDEX 3
#define SQLITE_STMTSTATUS_VM_STEP 4
;- Checkpoint Mode Values
; KEYWORDS: {checkpoint mode}
;
; These constants define all valid values for the "checkpoint mode" passed
; as the third parameter to the [sqlite3_wal_checkpoint_v2()] interface.
; See the [sqlite3_wal_checkpoint_v2()] documentation for details on the
; meaning of each of these checkpoint modes.
#define SQLITE_CHECKPOINT_PASSIVE 0 ; Do as much as possible w/o blocking
#define SQLITE_CHECKPOINT_FULL 1 ; Wait for writers, then checkpoint
#define SQLITE_CHECKPOINT_RESTART 2 ; Like FULL but wait for for readers
#define SQLITE_CHECKPOINT_TRUNCATE 3 ; Like RESTART but also truncate WAL
;- Virtual Table Configuration Options
;
; These macros define the various options to the
; [sqlite3_vtab_config()] interface that [virtual table] implementations
; can use to customize and optimize their behavior.
;
; <dl>
; <dt>SQLITE_VTAB_CONSTRAINT_SUPPORT
; <dd>Calls of the form
; [sqlite3_vtab_config](db,SQLITE_VTAB_CONSTRAINT_SUPPORT,X) are supported,
; where X is an integer. If X is zero, then the [virtual table] whose
; [xCreate] or [xConnect] method invoked [sqlite3_vtab_config()] does not
; support constraints. In this configuration (which is the default) if
; a call to the [xUpdate] method returns [SQLITE_CONSTRAINT], then the entire
; statement is rolled back as if [ON CONFLICT | OR ABORT] had been
; specified as part of the users SQL statement, regardless of the actual
; ON CONFLICT mode specified.
;
; If X is non-zero, then the virtual table implementation guarantees
; that if [xUpdate] returns [SQLITE_CONSTRAINT], it will do so before
; any modifications to internal or persistent data structures have been made.
; If the [ON CONFLICT] mode is ABORT, FAIL, IGNORE or ROLLBACK, SQLite
; is able to roll back a statement or database transaction, and abandon
; or continue processing the current SQL statement as appropriate.
; If the ON CONFLICT mode is REPLACE and the [xUpdate] method returns
; [SQLITE_CONSTRAINT], SQLite handles this as if the ON CONFLICT mode
; had been ABORT.
;
; Virtual table implementations that are required to handle OR REPLACE
; must do so within the [xUpdate] method. If a call to the
; [sqlite3_vtab_on_conflict()] function indicates that the current ON
; CONFLICT policy is REPLACE, the virtual table implementation should
; silently replace the appropriate rows within the xUpdate callback and
; return SQLITE_OK. Or, if this is not possible, it may return
; SQLITE_CONSTRAINT, in which case SQLite falls back to OR ABORT
; constraint handling.
; </dl>
#define SQLITE_VTAB_CONSTRAINT_SUPPORT 1
;- Conflict resolution modes
; KEYWORDS: {conflict resolution mode}
;
; These constants are returned by [sqlite3_vtab_on_conflict()] to
; inform a [virtual table] implementation what the [ON CONFLICT] mode
; is for the SQL statement being evaluated.
;
; Note that the [SQLITE_IGNORE] constant is also used as a potential
; return value from the [sqlite3_set_authorizer()] callback and that
; [SQLITE_ABORT] is also a [result code].
#define SQLITE_ROLLBACK 1
; #define SQLITE_IGNORE 2 // Also used by sqlite3_authorizer() callback
#define SQLITE_FAIL 3
; #define SQLITE_ABORT 4 // Also an error code
#define SQLITE_REPLACE 5
;- Prepared Statement Scan Status Opcodes
; KEYWORDS: {scanstatus options}
;
; The following constants can be used for the T parameter to the
; [sqlite3_stmt_scanstatus(S,X,T,V)] interface. Each constant designates a
; different metric for sqlite3_stmt_scanstatus() to return.
;
; When the value returned to V is a string, space to hold that string is
; managed by the prepared statement S and will be automatically freed when
; S is finalized.
;
; <dl>
; [[SQLITE_SCANSTAT_NLOOP]] <dt>SQLITE_SCANSTAT_NLOOP</dt>
; <dd>^The [sqlite3_int64] variable pointed to by the T parameter will be
; set to the total number of times that the X-th loop has run.</dd>
;
; [[SQLITE_SCANSTAT_NVISIT]] <dt>SQLITE_SCANSTAT_NVISIT</dt>
; <dd>^The [sqlite3_int64] variable pointed to by the T parameter will be set
; to the total number of rows examined by all iterations of the X-th loop.</dd>
;
; [[SQLITE_SCANSTAT_EST]] <dt>SQLITE_SCANSTAT_EST</dt>
; <dd>^The "double" variable pointed to by the T parameter will be set to the
; query planner's estimate for the average number of rows output from each
; iteration of the X-th loop. If the query planner's estimates was accurate,
; then this value will approximate the quotient NVISIT/NLOOP and the
; product of this value for all prior loops with the same SELECTID will
; be the NLOOP value for the current loop.
;
; [[SQLITE_SCANSTAT_NAME]] <dt>SQLITE_SCANSTAT_NAME</dt>
; <dd>^The "const char *" variable pointed to by the T parameter will be set
; to a zero-terminated UTF-8 string containing the name of the index or table
; used for the X-th loop.
;
; [[SQLITE_SCANSTAT_EXPLAIN]] <dt>SQLITE_SCANSTAT_EXPLAIN</dt>
; <dd>^The "const char *" variable pointed to by the T parameter will be set
; to a zero-terminated UTF-8 string containing the [EXPLAIN QUERY PLAN]
; description for the X-th loop.
;
; [[SQLITE_SCANSTAT_SELECTID]] <dt>SQLITE_SCANSTAT_SELECT</dt>
; <dd>^The "int" variable pointed to by the T parameter will be set to the
; "select-id" for the X-th loop. The select-id identifies which query or
; subquery the loop is part of. The main query has a select-id of zero.
; The select-id is the same value as is output in the first column
; of an [EXPLAIN QUERY PLAN] query.
; </dl>
#define SQLITE_SCANSTAT_NLOOP 0
#define SQLITE_SCANSTAT_NVISIT 1
#define SQLITE_SCANSTAT_EST 2
#define SQLITE_SCANSTAT_NAME 3
#define SQLITE_SCANSTAT_EXPLAIN 4
#define SQLITE_SCANSTAT_SELECTID 5
;- Constants Passed To The Conflict Handler
;
; Values that may be passed as the second argument to a conflict-handler.
;
; <dl>
; <dt>SQLITE_CHANGESET_DATA<dd>
; The conflict handler is invoked with CHANGESET_DATA as the second argument
; when processing a DELETE or UPDATE change if a row with the required
; PRIMARY KEY fields is present in the database, but one or more other
; (non primary-key) fields modified by the update do not contain the
; expected "before" values.
;
; The conflicting row, in this case, is the database row with the matching
; primary key.
;
; <dt>SQLITE_CHANGESET_NOTFOUND<dd>
; The conflict handler is invoked with CHANGESET_NOTFOUND as the second
; argument when processing a DELETE or UPDATE change if a row with the
; required PRIMARY KEY fields is not present in the database.
;
; There is no conflicting row in this case. The results of invoking the
; sqlite3changeset_conflict() API are undefined.
;
; <dt>SQLITE_CHANGESET_CONFLICT<dd>
; CHANGESET_CONFLICT is passed as the second argument to the conflict
; handler while processing an INSERT change if the operation would result
; in duplicate primary key values.
;
; The conflicting row in this case is the database row with the matching
; primary key.
;
; <dt>SQLITE_CHANGESET_FOREIGN_KEY<dd>
; If foreign key handling is enabled, and applying a changeset leaves the
; database in a state containing foreign key violations, the conflict
; handler is invoked with CHANGESET_FOREIGN_KEY as the second argument
; exactly once before the changeset is committed. If the conflict handler
; returns CHANGESET_OMIT, the changes, including those that caused the
; foreign key constraint violation, are committed. Or, if it returns
; CHANGESET_ABORT, the changeset is rolled back.
;
; No current or conflicting row information is provided. The only function
; it is possible to call on the supplied sqlite3_changeset_iter handle
; is sqlite3changeset_fk_conflicts().
;
; <dt>SQLITE_CHANGESET_CONSTRAINT<dd>
; If any other constraint violation occurs while applying a change (i.e.
; a UNIQUE, CHECK or NOT NULL constraint), the conflict handler is
; invoked with CHANGESET_CONSTRAINT as the second argument.
;
; There is no conflicting row in this case. The results of invoking the
; sqlite3changeset_conflict() API are undefined.
;
; </dl>
#define SQLITE_CHANGESET_DATA 1
#define SQLITE_CHANGESET_NOTFOUND 2
#define SQLITE_CHANGESET_CONFLICT 3
#define SQLITE_CHANGESET_CONSTRAINT 4
#define SQLITE_CHANGESET_FOREIGN_KEY 5
;
;- Constants Returned By The Conflict Handler
;
; A conflict handler callback must return one of the following three values.
;
; <dl>
; <dt>SQLITE_CHANGESET_OMIT<dd>
; If a conflict handler returns this value no special action is taken. The
; change that caused the conflict is not applied. The session module
; continues to the next change in the changeset.
;
; <dt>SQLITE_CHANGESET_REPLACE<dd>
; This value may only be returned if the second argument to the conflict
; handler was SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If this
; is not the case, any changes applied so far are rolled back and the
; call to sqlite3changeset_apply() returns SQLITE_MISUSE.
;
; If CHANGESET_REPLACE is returned by an SQLITE_CHANGESET_DATA conflict
; handler, then the conflicting row is either updated or deleted, depending
; on the type of change.
;
; If CHANGESET_REPLACE is returned by an SQLITE_CHANGESET_CONFLICT conflict
; handler, then the conflicting row is removed from the database and a
; second attempt to apply the change is made. If this second attempt fails,
; the original row is restored to the database before continuing.
;
; <dt>SQLITE_CHANGESET_ABORT<dd>
; If this value is returned, any changes applied so far are rolled back
; and the call to sqlite3changeset_apply() returns SQLITE_ABORT.
; </dl>
#define SQLITE_CHANGESET_OMIT 0
#define SQLITE_CHANGESET_REPLACE 1
#define SQLITE_CHANGESET_ABORT 2
;-===================================================================================-
;-===================================================================================-
;-------------------
#import [SQLITE_LIBRARY cdecl [
;- Run-Time Library Version Numbers
; KEYWORDS: sqlite3_version sqlite3_sourceid
;
; These interfaces provide the same information as the [SQLITE_VERSION],
; [SQLITE_VERSION_NUMBER], and [SQLITE_SOURCE_ID] C preprocessor macros
; but are associated with the library instead of the header file. ^(Cautious
; programmers might include assert() statements in their application to
; verify that values returned by these interfaces match the macros in
; the header, and thus ensure that the application is
; compiled with matching library and header files.
;
; <blockquote><pre>
; assert( sqlite3_libversion_number()==SQLITE_VERSION_NUMBER );
; assert( strcmp(sqlite3_sourceid(),SQLITE_SOURCE_ID)==0 );
; assert( strcmp(sqlite3_libversion(),SQLITE_VERSION)==0 );
; </pre></blockquote>)^
;
; ^The sqlite3_version[] string constant contains the text of [SQLITE_VERSION]
; macro. ^The sqlite3_libversion() function returns a pointer to the
; to the sqlite3_version[] string constant. The sqlite3_libversion()
; function is provided for use in DLLs since DLL users usually do not have
; direct access to string constants within the DLL. ^The
; sqlite3_libversion_number() function returns an integer equal to
; [SQLITE_VERSION_NUMBER]. ^The sqlite3_sourceid() function returns
; a pointer to a string constant whose value is the same as the
; [SQLITE_SOURCE_ID] C preprocessor macro.
;
; See also: [sqlite_version()] and [sqlite_source_id()].
;@@ const char * sqlite3_libversion(void);
sqlite3_libversion: "sqlite3_libversion" [
return: [c-string!]
]
;@@ const char * sqlite3_sourceid(void);
sqlite3_sourceid: "sqlite3_sourceid" [
return: [c-string!]
]
;@@ int sqlite3_libversion_number(void);
sqlite3_libversion_number: "sqlite3_libversion_number" [
return: [integer!]
]
;- Run-Time Library Compilation Options Diagnostics
;
; ^The sqlite3_compileoption_used() function returns 0 or 1
; indicating whether the specified option was defined at
; compile time. ^The SQLITE_ prefix may be omitted from the
; option name passed to sqlite3_compileoption_used().
;
; ^The sqlite3_compileoption_get() function allows iterating
; over the list of options that were defined at compile time by
; returning the N-th compile time option string. ^If N is out of range,
; sqlite3_compileoption_get() returns a NULL pointer. ^The SQLITE_
; prefix is omitted from any strings returned by
; sqlite3_compileoption_get().
;
; ^Support for the diagnostic functions sqlite3_compileoption_used()
; and sqlite3_compileoption_get() may be omitted by specifying the
; [SQLITE_OMIT_COMPILEOPTION_DIAGS] option at compile time.
;
; See also: SQL functions [sqlite_compileoption_used()] and
; [sqlite_compileoption_get()] and the [compile_options pragma].
;@@ int sqlite3_compileoption_used(const char *zOptName);
sqlite3_compileoption_used: "sqlite3_compileoption_used" [
zOptName [c-string!] ;const char *
return: [integer!]
]
;@@ const char * sqlite3_compileoption_get(int N);
sqlite3_compileoption_get: "sqlite3_compileoption_get" [
N [integer!] ;int
return: [c-string!]
]
;- Test To See If The Library Is Threadsafe
;
; ^The sqlite3_threadsafe() function returns zero if and only if
; SQLite was compiled with mutexing code omitted due to the
; [SQLITE_THREADSAFE] compile-time option being set to 0.
;
; SQLite can be compiled with or without mutexes. When
; the [SQLITE_THREADSAFE] C preprocessor macro is 1 or 2, mutexes
; are enabled and SQLite is threadsafe. When the
; [SQLITE_THREADSAFE] macro is 0,
; the mutexes are omitted. Without the mutexes, it is not safe
; to use SQLite concurrently from more than one thread.
;
; Enabling mutexes incurs a measurable performance penalty.
; So if speed is of utmost importance, it makes sense to disable
; the mutexes. But for maximum safety, mutexes should be enabled.
; ^The default behavior is for mutexes to be enabled.
;
; This interface can be used by an application to make sure that the
; version of SQLite that it is linking against was compiled with
; the desired setting of the [SQLITE_THREADSAFE] macro.
;
; This interface only reports on the compile-time mutex setting
; of the [SQLITE_THREADSAFE] flag. If SQLite is compiled with
; SQLITE_THREADSAFE=1 or =2 then mutexes are enabled by default but
; can be fully or partially disabled using a call to [sqlite3_config()]
; with the verbs [SQLITE_CONFIG_SINGLETHREAD], [SQLITE_CONFIG_MULTITHREAD],
; or [SQLITE_CONFIG_SERIALIZED]. ^(The return value of the
; sqlite3_threadsafe() function shows only the compile-time setting of
; thread safety, not any run-time changes to that setting made by
; sqlite3_config(). In other words, the return value from sqlite3_threadsafe()
; is unchanged by calls to sqlite3_config().)^
;
; See the [threading mode] documentation for additional information.
;@@ int sqlite3_threadsafe(void);
sqlite3_threadsafe: "sqlite3_threadsafe" [
return: [integer!]
]
;- Closing A Database Connection
; DESTRUCTOR: sqlite3
;
; ^The sqlite3_close() and sqlite3_close_v2() routines are destructors
; for the [sqlite3] object.
; ^Calls to sqlite3_close() and sqlite3_close_v2() return [SQLITE_OK] if
; the [sqlite3] object is successfully destroyed and all associated
; resources are deallocated.
;
; ^If the database connection is associated with unfinalized prepared
; statements or unfinished sqlite3_backup objects then sqlite3_close()
; will leave the database connection open and return [SQLITE_BUSY].
; ^If sqlite3_close_v2() is called with unfinalized prepared statements
; and/or unfinished sqlite3_backups, then the database connection becomes
; an unusable "zombie" which will automatically be deallocated when the
; last prepared statement is finalized or the last sqlite3_backup is
; finished. The sqlite3_close_v2() interface is intended for use with
; host languages that are garbage collected, and where the order in which
; destructors are called is arbitrary.
;
; Applications should [sqlite3_finalize | finalize] all [prepared statements],
; [sqlite3_blob_close | close] all [BLOB handles], and
; [sqlite3_backup_finish | finish] all [sqlite3_backup] objects associated
; with the [sqlite3] object prior to attempting to close the object. ^If
; sqlite3_close_v2() is called on a [database connection] that still has
; outstanding [prepared statements], [BLOB handles], and/or
; [sqlite3_backup] objects then it returns [SQLITE_OK] and the deallocation
; of resources is deferred until all [prepared statements], [BLOB handles],
; and [sqlite3_backup] objects are also destroyed.
;
; ^If an [sqlite3] object is destroyed while a transaction is open,
; the transaction is automatically rolled back.
;
; The C parameter to [sqlite3_close(C)] and [sqlite3_close_v2(C)]
; must be either a NULL
; pointer or an [sqlite3] object pointer obtained
; from [sqlite3_open()], [sqlite3_open16()], or
; [sqlite3_open_v2()], and not previously closed.
; ^Calling sqlite3_close() or sqlite3_close_v2() with a NULL pointer
; argument is a harmless no-op.
;@@ int sqlite3_close(sqlite3*);
sqlite3_close: "sqlite3_close" [
arg1 [sqlite3!] ;sqlite3*
return: [integer!]
]
;@@ int sqlite3_close_v2(sqlite3*);
sqlite3_close_v2: "sqlite3_close_v2" [
arg1 [sqlite3!] ;sqlite3*
return: [integer!]
]
;- One-Step Query Execution Interface
; METHOD: sqlite3
;
; The sqlite3_exec() interface is a convenience wrapper around
; [sqlite3_prepare_v2()], [sqlite3_step()], and [sqlite3_finalize()],
; that allows an application to run multiple statements of SQL
; without having to use a lot of C code.
;
; ^The sqlite3_exec() interface runs zero or more UTF-8 encoded,
; semicolon-separate SQL statements passed into its 2nd argument,
; in the context of the [database connection] passed in as its 1st
; argument. ^If the callback function of the 3rd argument to
; sqlite3_exec() is not NULL, then it is invoked for each result row
; coming out of the evaluated SQL statements. ^The 4th argument to
; sqlite3_exec() is relayed through to the 1st argument of each
; callback invocation. ^If the callback pointer to sqlite3_exec()
; is NULL, then no callback is ever invoked and result rows are
; ignored.
;
; ^If an error occurs while evaluating the SQL statements passed into
; sqlite3_exec(), then execution of the current statement stops and
; subsequent statements are skipped. ^If the 5th parameter to sqlite3_exec()
; is not NULL then any error message is written into memory obtained
; from [sqlite3_malloc()] and passed back through the 5th parameter.
; To avoid memory leaks, the application should invoke [sqlite3_free()]
; on error message strings returned through the 5th parameter of
; sqlite3_exec() after the error message string is no longer needed.
; ^If the 5th parameter to sqlite3_exec() is not NULL and no errors
; occur, then sqlite3_exec() sets the pointer in its 5th parameter to
; NULL before returning.
;
; ^If an sqlite3_exec() callback returns non-zero, the sqlite3_exec()
; routine returns SQLITE_ABORT without invoking the callback again and
; without running any subsequent SQL statements.
;
; ^The 2nd argument to the sqlite3_exec() callback function is the
; number of columns in the result. ^The 3rd argument to the sqlite3_exec()
; callback is an array of pointers to strings obtained as if from
; [sqlite3_column_text()], one for each column. ^If an element of a
; result row is NULL then the corresponding string pointer for the
; sqlite3_exec() callback is a NULL pointer. ^The 4th argument to the
; sqlite3_exec() callback is an array of pointers to strings where each
; entry represents the name of corresponding result column as obtained
; from [sqlite3_column_name()].
;
; ^If the 2nd parameter to sqlite3_exec() is a NULL pointer, a pointer
; to an empty string, or a pointer that contains only whitespace and/or
; SQL comments, then no SQL statements are evaluated and the database
; is not changed.
;
; Restrictions:
;
; <ul>
; <li> The application must ensure that the 1st parameter to sqlite3_exec()
; is a valid and open [database connection].
; <li> The application must not close the [database connection] specified by
; the 1st parameter to sqlite3_exec() while sqlite3_exec() is running.
; <li> The application must not modify the SQL statement text passed into
; the 2nd parameter of sqlite3_exec() while sqlite3_exec() is running.
; </ul>
;@@ int sqlite3_exec(
;@@ sqlite3*, /* An open database */
;@@ const char *sql, /* SQL to be evaluated */
;@@ int (*callback)(void*,int,char**,char**), /* Callback function */
;@@ void *, /* 1st argument to callback */
;@@ char **errmsg /* Error msg written here */
;@@);
sqlite3_exec: "sqlite3_exec" [
arg1 [sqlite3!] ; An open database
sql [c-string!] ; SQL to be evaluated
callback [function! [
arg1 [int-ptr!]
arg2 [integer!]
arg3 [string-ref!]
arg4 [string-ref!]
return: [integer!]
]]
arg4 [int-ptr!] ; 1st argument to callback
errmsg [string-ref!] ; Error msg written here
return: [integer!]
]
;- Initialize The SQLite Library
;
; ^The sqlite3_initialize() routine initializes the
; SQLite library. ^The sqlite3_shutdown() routine
; deallocates any resources that were allocated by sqlite3_initialize().
; These routines are designed to aid in process initialization and
; shutdown on embedded systems. Workstation applications using
; SQLite normally do not need to invoke either of these routines.
;
; A call to sqlite3_initialize() is an "effective" call if it is
; the first time sqlite3_initialize() is invoked during the lifetime of
; the process, or if it is the first time sqlite3_initialize() is invoked
; following a call to sqlite3_shutdown(). ^(Only an effective call
; of sqlite3_initialize() does any initialization. All other calls
; are harmless no-ops.)^
;
; A call to sqlite3_shutdown() is an "effective" call if it is the first
; call to sqlite3_shutdown() since the last sqlite3_initialize(). ^(Only
; an effective call to sqlite3_shutdown() does any deinitialization.
; All other valid calls to sqlite3_shutdown() are harmless no-ops.)^
;
; The sqlite3_initialize() interface is threadsafe, but sqlite3_shutdown()
; is not. The sqlite3_shutdown() interface must only be called from a
; single thread. All open [database connections] must be closed and all
; other SQLite resources must be deallocated prior to invoking
; sqlite3_shutdown().
;
; Among other things, ^sqlite3_initialize() will invoke
; sqlite3_os_init(). Similarly, ^sqlite3_shutdown()
; will invoke sqlite3_os_end().
;
; ^The sqlite3_initialize() routine returns [SQLITE_OK] on success.
; ^If for some reason, sqlite3_initialize() is unable to initialize
; the library (perhaps it is unable to allocate a needed resource such
; as a mutex) it returns an [error code] other than [SQLITE_OK].
;
; ^The sqlite3_initialize() routine is called internally by many other
; SQLite interfaces so that an application usually does not need to
; invoke sqlite3_initialize() directly. For example, [sqlite3_open()]
; calls sqlite3_initialize() so the SQLite library will be automatically
; initialized when [sqlite3_open()] is called if it has not be initialized
; already. ^However, if SQLite is compiled with the [SQLITE_OMIT_AUTOINIT]
; compile-time option, then the automatic calls to sqlite3_initialize()
; are omitted and the application must call sqlite3_initialize() directly
; prior to using any other SQLite interface. For maximum portability,
; it is recommended that applications always invoke sqlite3_initialize()
; directly prior to using any other SQLite interface. Future releases
; of SQLite may require this. In other words, the behavior exhibited
; when SQLite is compiled with [SQLITE_OMIT_AUTOINIT] might become the
; default behavior in some future release of SQLite.
;
; The sqlite3_os_init() routine does operating-system specific
; initialization of the SQLite library. The sqlite3_os_end()
; routine undoes the effect of sqlite3_os_init(). Typical tasks
; performed by these routines include allocation or deallocation
; of static resources, initialization of global variables,
; setting up a default [sqlite3_vfs] module, or setting up
; a default configuration using [sqlite3_config()].
;
; The application should never invoke either sqlite3_os_init()
; or sqlite3_os_end() directly. The application should only invoke
; sqlite3_initialize() and sqlite3_shutdown(). The sqlite3_os_init()
; interface is called automatically by sqlite3_initialize() and
; sqlite3_os_end() is called by sqlite3_shutdown(). Appropriate
; implementations for sqlite3_os_init() and sqlite3_os_end()
; are built into SQLite when it is compiled for Unix, Windows, or OS/2.
; When [custom builds | built for other platforms]
; (using the [SQLITE_OS_OTHER=1] compile-time
; option) the application must supply a suitable implementation for
; sqlite3_os_init() and sqlite3_os_end(). An application-supplied
; implementation of sqlite3_os_init() or sqlite3_os_end()
; must return [SQLITE_OK] on success and some other [error code] upon
; failure.
;@@ int sqlite3_initialize(void);
sqlite3_initialize: "sqlite3_initialize" [
return: [integer!]
]
;@@ int sqlite3_shutdown(void);
sqlite3_shutdown: "sqlite3_shutdown" [
return: [integer!]
]
;@@ int sqlite3_os_init(void);
sqlite3_os_init: "sqlite3_os_init" [
return: [integer!]
]
;@@ int sqlite3_os_end(void);
sqlite3_os_end: "sqlite3_os_end" [
return: [integer!]
]
;- Configuring The SQLite Library
;
; The sqlite3_config() interface is used to make global configuration
; changes to SQLite in order to tune SQLite to the specific needs of
; the application. The default configuration is recommended for most
; applications and so this routine is usually not necessary. It is
; provided to support rare applications with unusual needs.
;
; <b>The sqlite3_config() interface is not threadsafe. The application
; must ensure that no other SQLite interfaces are invoked by other
; threads while sqlite3_config() is running.</b>
;
; The sqlite3_config() interface
; may only be invoked prior to library initialization using
; [sqlite3_initialize()] or after shutdown by [sqlite3_shutdown()].
; ^If sqlite3_config() is called after [sqlite3_initialize()] and before
; [sqlite3_shutdown()] then it will return SQLITE_MISUSE.
; Note, however, that ^sqlite3_config() can be called as part of the
; implementation of an application-defined [sqlite3_os_init()].
;
; The first argument to sqlite3_config() is an integer
; [configuration option] that determines
; what property of SQLite is to be configured. Subsequent arguments
; vary depending on the [configuration option]
; in the first argument.
;
; ^When a configuration option is set, sqlite3_config() returns [SQLITE_OK].
; ^If the option is unknown or SQLite is unable to set the option
; then this routine returns a non-zero [error code].
;@@ int sqlite3_config(int, ...);
sqlite3_config: "sqlite3_config" [[variadic]
return: [integer!]
]
;- Configure database connections
; METHOD: sqlite3
;
; The sqlite3_db_config() interface is used to make configuration
; changes to a [database connection]. The interface is similar to
; [sqlite3_config()] except that the changes apply to a single
; [database connection] (specified in the first argument).
;
; The second argument to sqlite3_db_config(D,V,...) is the
; [SQLITE_DBCONFIG_LOOKASIDE | configuration verb] - an integer code
; that indicates what aspect of the [database connection] is being configured.
; Subsequent arguments vary depending on the configuration verb.
;
; ^Calls to sqlite3_db_config() return SQLITE_OK if and only if
; the call is considered successful.
;@@ int sqlite3_db_config(sqlite3*, int op, ...);
sqlite3_db_config: "sqlite3_db_config" [[variadic]
return: [integer!]
]
;- Enable Or Disable Extended Result Codes
; METHOD: sqlite3
;
; ^The sqlite3_extended_result_codes() routine enables or disables the
; [extended result codes] feature of SQLite. ^The extended result
; codes are disabled by default for historical compatibility.
;@@ int sqlite3_extended_result_codes(sqlite3*, int onoff);
sqlite3_extended_result_codes: "sqlite3_extended_result_codes" [
arg1 [sqlite3!] ;sqlite3*
onoff [integer!] ;int
return: [integer!]
]
;- Last Insert Rowid
; METHOD: sqlite3
;
; ^Each entry in most SQLite tables (except for [WITHOUT ROWID] tables)
; has a unique 64-bit signed
; integer key called the [ROWID | "rowid"]. ^The rowid is always available
; as an undeclared column named ROWID, OID, or _ROWID_ as long as those
; names are not also used by explicitly declared columns. ^If
; the table has a column of type [INTEGER PRIMARY KEY] then that column
; is another alias for the rowid.
;
; ^The sqlite3_last_insert_rowid(D) interface usually returns the [rowid] of
; the most recent successful [INSERT] into a rowid table or [virtual table]
; on database connection D. ^Inserts into [WITHOUT ROWID] tables are not
; recorded. ^If no successful [INSERT]s into rowid tables have ever occurred
; on the database connection D, then sqlite3_last_insert_rowid(D) returns
; zero.
;
; As well as being set automatically as rows are inserted into database
; tables, the value returned by this function may be set explicitly by
; [sqlite3_set_last_insert_rowid()]
;
; Some virtual table implementations may INSERT rows into rowid tables as
; part of committing a transaction (e.g. to flush data accumulated in memory
; to disk). In this case subsequent calls to this function return the rowid
; associated with these internal INSERT operations, which leads to
; unintuitive results. Virtual table implementations that do write to rowid
; tables in this way can avoid this problem by restoring the original
; rowid value using [sqlite3_set_last_insert_rowid()] before returning
; control to the user.
;
; ^(If an [INSERT] occurs within a trigger then this routine will
; return the [rowid] of the inserted row as long as the trigger is
; running. Once the trigger program ends, the value returned
; by this routine reverts to what it was before the trigger was fired.)^
;
; ^An [INSERT] that fails due to a constraint violation is not a
; successful [INSERT] and does not change the value returned by this
; routine. ^Thus INSERT OR FAIL, INSERT OR IGNORE, INSERT OR ROLLBACK,
; and INSERT OR ABORT make no changes to the return value of this
; routine when their insertion fails. ^(When INSERT OR REPLACE
; encounters a constraint violation, it does not fail. The
; INSERT continues to completion after deleting rows that caused
; the constraint problem so INSERT OR REPLACE will always change
; the return value of this interface.)^
;
; ^For the purposes of this routine, an [INSERT] is considered to
; be successful even if it is subsequently rolled back.
;
; This function is accessible to SQL statements via the
; [last_insert_rowid() SQL function].
;
; If a separate thread performs a new [INSERT] on the same
; database connection while the [sqlite3_last_insert_rowid()]
; function is running and thus changes the last insert [rowid],
; then the value returned by [sqlite3_last_insert_rowid()] is
; unpredictable and might not equal either the old or the new
; last insert [rowid].
;@@ sqlite3_int64 sqlite3_last_insert_rowid(sqlite3*);
sqlite3_last_insert_rowid: "sqlite3_last_insert_rowid" [
arg1 [sqlite3!] ;sqlite3*
return: [long-long!]
]
;- Set the Last Insert Rowid value.
; METHOD: sqlite3
;
; The sqlite3_set_last_insert_rowid(D, R) method allows the application to
; set the value returned by calling sqlite3_last_insert_rowid(D) to R
; without inserting a row into the database.
;@@ void sqlite3_set_last_insert_rowid(sqlite3*,sqlite3_int64);
sqlite3_set_last_insert_rowid: "sqlite3_set_last_insert_rowid" [
arg1 [sqlite3!] ;sqlite3*
arg2 [long-long!] ;sqlite3_int64
]
;- Count The Number Of Rows Modified
; METHOD: sqlite3
;
; ^This function returns the number of rows modified, inserted or
; deleted by the most recently completed INSERT, UPDATE or DELETE
; statement on the database connection specified by the only parameter.
; ^Executing any other type of SQL statement does not modify the value
; returned by this function.
;
; ^Only changes made directly by the INSERT, UPDATE or DELETE statement are
; considered - auxiliary changes caused by [CREATE TRIGGER | triggers],
; [foreign key actions] or [REPLACE] constraint resolution are not counted.
;
; Changes to a view that are intercepted by
; [INSTEAD OF trigger | INSTEAD OF triggers] are not counted. ^The value
; returned by sqlite3_changes() immediately after an INSERT, UPDATE or
; DELETE statement run on a view is always zero. Only changes made to real
; tables are counted.
;
; Things are more complicated if the sqlite3_changes() function is
; executed while a trigger program is running. This may happen if the
; program uses the [changes() SQL function], or if some other callback
; function invokes sqlite3_changes() directly. Essentially:
;
; <ul>
; <li> ^(Before entering a trigger program the value returned by
; sqlite3_changes() function is saved. After the trigger program
; has finished, the original value is restored.)^
;
; <li> ^(Within a trigger program each INSERT, UPDATE and DELETE
; statement sets the value returned by sqlite3_changes()
; upon completion as normal. Of course, this value will not include
; any changes performed by sub-triggers, as the sqlite3_changes()
; value will be saved and restored after each sub-trigger has run.)^
; </ul>
;
; ^This means that if the changes() SQL function (or similar) is used
; by the first INSERT, UPDATE or DELETE statement within a trigger, it
; returns the value as set when the calling statement began executing.
; ^If it is used by the second or subsequent such statement within a trigger
; program, the value returned reflects the number of rows modified by the
; previous INSERT, UPDATE or DELETE statement within the same trigger.
;
; See also the [sqlite3_total_changes()] interface, the
; [count_changes pragma], and the [changes() SQL function].
;
; If a separate thread makes changes on the same database connection
; while [sqlite3_changes()] is running then the value returned
; is unpredictable and not meaningful.
;@@ int sqlite3_changes(sqlite3*);
sqlite3_changes: "sqlite3_changes" [
arg1 [sqlite3!] ;sqlite3*
return: [integer!]
]
;- Total Number Of Rows Modified
; METHOD: sqlite3
;
; ^This function returns the total number of rows inserted, modified or
; deleted by all [INSERT], [UPDATE] or [DELETE] statements completed
; since the database connection was opened, including those executed as
; part of trigger programs. ^Executing any other type of SQL statement
; does not affect the value returned by sqlite3_total_changes().
;
; ^Changes made as part of [foreign key actions] are included in the
; count, but those made as part of REPLACE constraint resolution are
; not. ^Changes to a view that are intercepted by INSTEAD OF triggers
; are not counted.
;
; See also the [sqlite3_changes()] interface, the
; [count_changes pragma], and the [total_changes() SQL function].
;
; If a separate thread makes changes on the same database connection
; while [sqlite3_total_changes()] is running then the value
; returned is unpredictable and not meaningful.
;@@ int sqlite3_total_changes(sqlite3*);
sqlite3_total_changes: "sqlite3_total_changes" [
arg1 [sqlite3!] ;sqlite3*
return: [integer!]
]
;- Interrupt A Long-Running Query
; METHOD: sqlite3
;
; ^This function causes any pending database operation to abort and
; return at its earliest opportunity. This routine is typically
; called in response to a user action such as pressing "Cancel"
; or Ctrl-C where the user wants a long query operation to halt
; immediately.
;
; ^It is safe to call this routine from a thread different from the
; thread that is currently running the database operation. But it
; is not safe to call this routine with a [database connection] that
; is closed or might close before sqlite3_interrupt() returns.
;
; ^If an SQL operation is very nearly finished at the time when
; sqlite3_interrupt() is called, then it might not have an opportunity
; to be interrupted and might continue to completion.
;
; ^An SQL operation that is interrupted will return [SQLITE_INTERRUPT].
; ^If the interrupted SQL operation is an INSERT, UPDATE, or DELETE
; that is inside an explicit transaction, then the entire transaction
; will be rolled back automatically.
;
; ^The sqlite3_interrupt(D) call is in effect until all currently running
; SQL statements on [database connection] D complete. ^Any new SQL statements
; that are started after the sqlite3_interrupt() call and before the
; running statements reaches zero are interrupted as if they had been
; running prior to the sqlite3_interrupt() call. ^New SQL statements
; that are started after the running statement count reaches zero are
; not effected by the sqlite3_interrupt().
; ^A call to sqlite3_interrupt(D) that occurs when there are no running
; SQL statements is a no-op and has no effect on SQL statements
; that are started after the sqlite3_interrupt() call returns.
;
; If the database connection closes while [sqlite3_interrupt()]
; is running then bad things will likely happen.
;@@ void sqlite3_interrupt(sqlite3*);
sqlite3_interrupt: "sqlite3_interrupt" [
arg1 [sqlite3!] ;sqlite3*
]
;- Determine If An SQL Statement Is Complete
;
; These routines are useful during command-line input to determine if the
; currently entered text seems to form a complete SQL statement or
; if additional input is needed before sending the text into
; SQLite for parsing. ^These routines return 1 if the input string
; appears to be a complete SQL statement. ^A statement is judged to be
; complete if it ends with a semicolon token and is not a prefix of a
; well-formed CREATE TRIGGER statement. ^Semicolons that are embedded within
; string literals or quoted identifier names or comments are not
; independent tokens (they are part of the token in which they are
; embedded) and thus do not count as a statement terminator. ^Whitespace
; and comments that follow the final semicolon are ignored.
;
; ^These routines return 0 if the statement is incomplete. ^If a
; memory allocation fails, then SQLITE_NOMEM is returned.
;
; ^These routines do not parse the SQL statements thus
; will not detect syntactically incorrect SQL.
;
; ^(If SQLite has not been initialized using [sqlite3_initialize()] prior
; to invoking sqlite3_complete16() then sqlite3_initialize() is invoked
; automatically by sqlite3_complete16(). If that initialization fails,
; then the return value from sqlite3_complete16() will be non-zero
; regardless of whether or not the input SQL is complete.)^
;
; The input to [sqlite3_complete()] must be a zero-terminated
; UTF-8 string.
;
; The input to [sqlite3_complete16()] must be a zero-terminated
; UTF-16 string in native byte order.
;@@ int sqlite3_complete(const char *sql);
sqlite3_complete: "sqlite3_complete" [
sql [c-string!] ;const char *
return: [integer!]
]
;@@ int sqlite3_complete16(const void *sql);
sqlite3_complete16: "sqlite3_complete16" [
sql [byte-ptr!] ;const void *
return: [integer!]
]
;- Register A Callback To Handle SQLITE_BUSY Errors
; KEYWORDS: {busy-handler callback} {busy handler}
; METHOD: sqlite3
;
; ^The sqlite3_busy_handler(D,X,P) routine sets a callback function X
; that might be invoked with argument P whenever
; an attempt is made to access a database table associated with
; [database connection] D when another thread
; or process has the table locked.
; The sqlite3_busy_handler() interface is used to implement
; [sqlite3_busy_timeout()] and [PRAGMA busy_timeout].
;
; ^If the busy callback is NULL, then [SQLITE_BUSY]
; is returned immediately upon encountering the lock. ^If the busy callback
; is not NULL, then the callback might be invoked with two arguments.
;
; ^The first argument to the busy handler is a copy of the void* pointer which
; is the third argument to sqlite3_busy_handler(). ^The second argument to
; the busy handler callback is the number of times that the busy handler has
; been invoked previously for the same locking event. ^If the
; busy callback returns 0, then no additional attempts are made to
; access the database and [SQLITE_BUSY] is returned
; to the application.
; ^If the callback returns non-zero, then another attempt
; is made to access the database and the cycle repeats.
;
; The presence of a busy handler does not guarantee that it will be invoked
; when there is lock contention. ^If SQLite determines that invoking the busy
; handler could result in a deadlock, it will go ahead and return [SQLITE_BUSY]
; to the application instead of invoking the
; busy handler.
; Consider a scenario where one process is holding a read lock that
; it is trying to promote to a reserved lock and
; a second process is holding a reserved lock that it is trying
; to promote to an exclusive lock. The first process cannot proceed
; because it is blocked by the second and the second process cannot
; proceed because it is blocked by the first. If both processes
; invoke the busy handlers, neither will make any progress. Therefore,
; SQLite returns [SQLITE_BUSY] for the first process, hoping that this
; will induce the first process to release its read lock and allow
; the second process to proceed.
;
; ^The default busy callback is NULL.
;
; ^(There can only be a single busy handler defined for each
; [database connection]. Setting a new busy handler clears any
; previously set handler.)^ ^Note that calling [sqlite3_busy_timeout()]
; or evaluating [PRAGMA busy_timeout=N] will change the
; busy handler and thus clear any previously set busy handler.
;
; The busy callback should not take any actions which modify the
; database connection that invoked the busy handler. In other words,
; the busy handler is not reentrant. Any such actions
; result in undefined behavior.
;
; A busy handler must not close the database connection
; or [prepared statement] that invoked the busy handler.
;@@ int sqlite3_busy_handler(sqlite3*,int(*)(void*,int),void*);
sqlite3_busy_handler: "sqlite3_busy_handler" [
arg1 [sqlite3!] ;sqlite3*
arg2 [function! [
arg1 [int-ptr!]
arg2 [integer!]
return: [integer!]
]]
arg3 [int-ptr!] ;void*
return: [integer!]
]
;- Set A Busy Timeout
; METHOD: sqlite3
;
; ^This routine sets a [sqlite3_busy_handler | busy handler] that sleeps
; for a specified amount of time when a table is locked. ^The handler
; will sleep multiple times until at least "ms" milliseconds of sleeping
; have accumulated. ^After at least "ms" milliseconds of sleeping,
; the handler returns 0 which causes [sqlite3_step()] to return
; [SQLITE_BUSY].
;
; ^Calling this routine with an argument less than or equal to zero
; turns off all busy handlers.
;
; ^(There can only be a single busy handler for a particular
; [database connection] at any given moment. If another busy handler
; was defined (using [sqlite3_busy_handler()]) prior to calling
; this routine, that other busy handler is cleared.)^
;
; See also: [PRAGMA busy_timeout]
;@@ int sqlite3_busy_timeout(sqlite3*, int ms);
sqlite3_busy_timeout: "sqlite3_busy_timeout" [
arg1 [sqlite3!] ;sqlite3*
ms [integer!] ;int
return: [integer!]
]
;- Convenience Routines For Running Queries
; METHOD: sqlite3
;
; This is a legacy interface that is preserved for backwards compatibility.
; Use of this interface is not recommended.
;
; Definition: A <b>result table</b> is memory data structure created by the
; [sqlite3_get_table()] interface. A result table records the
; complete query results from one or more queries.
;
; The table conceptually has a number of rows and columns. But
; these numbers are not part of the result table itself. These
; numbers are obtained separately. Let N be the number of rows
; and M be the number of columns.
;
; A result table is an array of pointers to zero-terminated UTF-8 strings.
; There are (N+1)*M elements in the array. The first M pointers point
; to zero-terminated strings that contain the names of the columns.
; The remaining entries all point to query results. NULL values result
; in NULL pointers. All other values are in their UTF-8 zero-terminated
; string representation as returned by [sqlite3_column_text()].
;
; A result table might consist of one or more memory allocations.
; It is not safe to pass a result table directly to [sqlite3_free()].
; A result table should be deallocated using [sqlite3_free_table()].
;
; ^(As an example of the result table format, suppose a query result
; is as follows:
;
; <blockquote><pre>
; Name | Age
; -----------------------
; Alice | 43
; Bob | 28
; Cindy | 21
; </pre></blockquote>
;
; There are two column (M==2) and three rows (N==3). Thus the
; result table has 8 entries. Suppose the result table is stored
; in an array names azResult. Then azResult holds this content:
;
; <blockquote><pre>
; azResult&#91;0] = "Name";
; azResult&#91;1] = "Age";
; azResult&#91;2] = "Alice";
; azResult&#91;3] = "43";
; azResult&#91;4] = "Bob";
; azResult&#91;5] = "28";
; azResult&#91;6] = "Cindy";
; azResult&#91;7] = "21";
; </pre></blockquote>)^
;
; ^The sqlite3_get_table() function evaluates one or more
; semicolon-separated SQL statements in the zero-terminated UTF-8
; string of its 2nd parameter and returns a result table to the
; pointer given in its 3rd parameter.
;
; After the application has finished with the result from sqlite3_get_table(),
; it must pass the result table pointer to sqlite3_free_table() in order to
; release the memory that was malloced. Because of the way the
; [sqlite3_malloc()] happens within sqlite3_get_table(), the calling
; function must not try to call [sqlite3_free()] directly. Only
; [sqlite3_free_table()] is able to release the memory properly and safely.
;
; The sqlite3_get_table() interface is implemented as a wrapper around
; [sqlite3_exec()]. The sqlite3_get_table() routine does not have access
; to any internal data structures of SQLite. It uses only the public
; interface defined here. As a consequence, errors that occur in the
; wrapper layer outside of the internal [sqlite3_exec()] call are not
; reflected in subsequent calls to [sqlite3_errcode()] or
; [sqlite3_errmsg()].
;@@ int sqlite3_get_table(
;@@ sqlite3 *db, /* An open database */
;@@ const char *zSql, /* SQL to be evaluated */
;@@ char ***pazResult, /* Results of the query */
;@@ int *pnRow, /* Number of result rows written here */
;@@ int *pnColumn, /* Number of result columns written here */
;@@ char **pzErrmsg /* Error msg written here */
;@@);
sqlite3_get_table: "sqlite3_get_table" [
db [sqlite3!] ; An open database
zSql [c-string!] ; SQL to be evaluated
pazResult [string-ref-ref!] ; Results of the query
pnRow [int-ptr!] ; Number of result rows written here
pnColumn [int-ptr!] ; Number of result columns written here
pzErrmsg [string-ref!] ; Error msg written here
return: [integer!]
]
;@@ void sqlite3_free_table(char **result);
sqlite3_free_table: "sqlite3_free_table" [
result [string-ref!] ;char **
]
;- Formatted String Printing Functions
;
; These routines are work-alikes of the "printf()" family of functions
; from the standard C library.
; These routines understand most of the common K&R formatting options,
; plus some additional non-standard formats, detailed below.
; Note that some of the more obscure formatting options from recent
; C-library standards are omitted from this implementation.
;
; ^The sqlite3_mprintf() and sqlite3_vmprintf() routines write their
; results into memory obtained from [sqlite3_malloc()].
; The strings returned by these two routines should be
; released by [sqlite3_free()]. ^Both routines return a
; NULL pointer if [sqlite3_malloc()] is unable to allocate enough
; memory to hold the resulting string.
;
; ^(The sqlite3_snprintf() routine is similar to "snprintf()" from
; the standard C library. The result is written into the
; buffer supplied as the second parameter whose size is given by
; the first parameter. Note that the order of the
; first two parameters is reversed from snprintf().)^ This is an
; historical accident that cannot be fixed without breaking
; backwards compatibility. ^(Note also that sqlite3_snprintf()
; returns a pointer to its buffer instead of the number of
; characters actually written into the buffer.)^ We admit that
; the number of characters written would be a more useful return
; value but we cannot change the implementation of sqlite3_snprintf()
; now without breaking compatibility.
;
; ^As long as the buffer size is greater than zero, sqlite3_snprintf()
; guarantees that the buffer is always zero-terminated. ^The first
; parameter "n" is the total size of the buffer, including space for
; the zero terminator. So the longest string that can be completely
; written will be n-1 characters.
;
; ^The sqlite3_vsnprintf() routine is a varargs version of sqlite3_snprintf().
;
; These routines all implement some additional formatting
; options that are useful for constructing SQL statements.
; All of the usual printf() formatting options apply. In addition, there
; is are "%q", "%Q", "%w" and "%z" options.
;
; ^(The %q option works like %s in that it substitutes a nul-terminated
; string from the argument list. But %q also doubles every '\'' character.
; %q is designed for use inside a string literal.)^ By doubling each '\''
; character it escapes that character and allows it to be inserted into
; the string.
;
; For example, assume the string variable zText contains text as follows:
;
; <blockquote><pre>
; char *zText = "It's a happy day!";
; </pre></blockquote>
;
; One can use this text in an SQL statement as follows:
;
; <blockquote><pre>
; char *zSQL = sqlite3_mprintf("INSERT INTO table VALUES('%q')", zText);
; sqlite3_exec(db, zSQL, 0, 0, 0);
; sqlite3_free(zSQL);
; </pre></blockquote>
;
; Because the %q format string is used, the '\'' character in zText
; is escaped and the SQL generated is as follows:
;
; <blockquote><pre>
; INSERT INTO table1 VALUES('It''s a happy day!')
; </pre></blockquote>
;
; This is correct. Had we used %s instead of %q, the generated SQL
; would have looked like this:
;
; <blockquote><pre>
; INSERT INTO table1 VALUES('It's a happy day!');
; </pre></blockquote>
;
; This second example is an SQL syntax error. As a general rule you should
; always use %q instead of %s when inserting text into a string literal.
;
; ^(The %Q option works like %q except it also adds single quotes around
; the outside of the total string. Additionally, if the parameter in the
; argument list is a NULL pointer, %Q substitutes the text "NULL" (without
; single quotes).)^ So, for example, one could say:
;
; <blockquote><pre>
; char *zSQL = sqlite3_mprintf("INSERT INTO table VALUES(%Q)", zText);
; sqlite3_exec(db, zSQL, 0, 0, 0);
; sqlite3_free(zSQL);
; </pre></blockquote>
;
; The code above will render a correct SQL statement in the zSQL
; variable even if the zText variable is a NULL pointer.
;
; ^(The "%w" formatting option is like "%q" except that it expects to
; be contained within double-quotes instead of single quotes, and it
; escapes the double-quote character instead of the single-quote
; character.)^ The "%w" formatting option is intended for safely inserting
; table and column names into a constructed SQL statement.
;
; ^(The "%z" formatting option works like "%s" but with the
; addition that after the string has been read and copied into
; the result, [sqlite3_free()] is called on the input string.)^
;@@ char * sqlite3_mprintf(const char*,...);
sqlite3_mprintf: "sqlite3_mprintf" [[variadic]
return: [c-string!]
]
;@@ char * sqlite3_snprintf(int,char*,const char*, ...);
sqlite3_snprintf: "sqlite3_snprintf" [[variadic]
return: [c-string!]
]
;- Memory Allocation Subsystem
;
; The SQLite core uses these three routines for all of its own
; internal memory allocation needs. "Core" in the previous sentence
; does not include operating-system specific VFS implementation. The
; Windows VFS uses native malloc() and free() for some operations.
;
; ^The sqlite3_malloc() routine returns a pointer to a block
; of memory at least N bytes in length, where N is the parameter.
; ^If sqlite3_malloc() is unable to obtain sufficient free
; memory, it returns a NULL pointer. ^If the parameter N to
; sqlite3_malloc() is zero or negative then sqlite3_malloc() returns
; a NULL pointer.
;
; ^The sqlite3_malloc64(N) routine works just like
; sqlite3_malloc(N) except that N is an unsigned 64-bit integer instead
; of a signed 32-bit integer.
;
; ^Calling sqlite3_free() with a pointer previously returned
; by sqlite3_malloc() or sqlite3_realloc() releases that memory so
; that it might be reused. ^The sqlite3_free() routine is
; a no-op if is called with a NULL pointer. Passing a NULL pointer
; to sqlite3_free() is harmless. After being freed, memory
; should neither be read nor written. Even reading previously freed
; memory might result in a segmentation fault or other severe error.
; Memory corruption, a segmentation fault, or other severe error
; might result if sqlite3_free() is called with a non-NULL pointer that
; was not obtained from sqlite3_malloc() or sqlite3_realloc().
;
; ^The sqlite3_realloc(X,N) interface attempts to resize a
; prior memory allocation X to be at least N bytes.
; ^If the X parameter to sqlite3_realloc(X,N)
; is a NULL pointer then its behavior is identical to calling
; sqlite3_malloc(N).
; ^If the N parameter to sqlite3_realloc(X,N) is zero or
; negative then the behavior is exactly the same as calling
; sqlite3_free(X).
; ^sqlite3_realloc(X,N) returns a pointer to a memory allocation
; of at least N bytes in size or NULL if insufficient memory is available.
; ^If M is the size of the prior allocation, then min(N,M) bytes
; of the prior allocation are copied into the beginning of buffer returned
; by sqlite3_realloc(X,N) and the prior allocation is freed.
; ^If sqlite3_realloc(X,N) returns NULL and N is positive, then the
; prior allocation is not freed.
;
; ^The sqlite3_realloc64(X,N) interfaces works the same as
; sqlite3_realloc(X,N) except that N is a 64-bit unsigned integer instead
; of a 32-bit signed integer.
;
; ^If X is a memory allocation previously obtained from sqlite3_malloc(),
; sqlite3_malloc64(), sqlite3_realloc(), or sqlite3_realloc64(), then
; sqlite3_msize(X) returns the size of that memory allocation in bytes.
; ^The value returned by sqlite3_msize(X) might be larger than the number
; of bytes requested when X was allocated. ^If X is a NULL pointer then
; sqlite3_msize(X) returns zero. If X points to something that is not
; the beginning of memory allocation, or if it points to a formerly
; valid memory allocation that has now been freed, then the behavior
; of sqlite3_msize(X) is undefined and possibly harmful.
;
; ^The memory returned by sqlite3_malloc(), sqlite3_realloc(),
; sqlite3_malloc64(), and sqlite3_realloc64()
; is always aligned to at least an 8 byte boundary, or to a
; 4 byte boundary if the [SQLITE_4_BYTE_ALIGNED_MALLOC] compile-time
; option is used.
;
; In SQLite version 3.5.0 and 3.5.1, it was possible to define
; the SQLITE_OMIT_MEMORY_ALLOCATION which would cause the built-in
; implementation of these routines to be omitted. That capability
; is no longer provided. Only built-in memory allocators can be used.
;
; Prior to SQLite version 3.7.10, the Windows OS interface layer called
; the system malloc() and free() directly when converting
; filenames between the UTF-8 encoding used by SQLite
; and whatever filename encoding is used by the particular Windows
; installation. Memory allocation errors were detected, but
; they were reported back as [SQLITE_CANTOPEN] or
; [SQLITE_IOERR] rather than [SQLITE_NOMEM].
;
; The pointer arguments to [sqlite3_free()] and [sqlite3_realloc()]
; must be either NULL or else pointers obtained from a prior
; invocation of [sqlite3_malloc()] or [sqlite3_realloc()] that have
; not yet been released.
;
; The application must not read or write any part of
; a block of memory after it has been released using
; [sqlite3_free()] or [sqlite3_realloc()].
;@@ void * sqlite3_malloc(int);
sqlite3_malloc: "sqlite3_malloc" [
arg1 [integer!] ;int
return: [int-ptr!]
]
;@@ void * sqlite3_malloc64(sqlite3_uint64);
sqlite3_malloc64: "sqlite3_malloc64" [
arg1 [long-long!] ;sqlite3_uint64
return: [int-ptr!]
]
;@@ void * sqlite3_realloc(void*, int);
sqlite3_realloc: "sqlite3_realloc" [
arg1 [int-ptr!] ;void*
arg2 [integer!] ;int
return: [int-ptr!]
]
;@@ void * sqlite3_realloc64(void*, sqlite3_uint64);
sqlite3_realloc64: "sqlite3_realloc64" [
arg1 [int-ptr!] ;void*
arg2 [long-long!] ;sqlite3_uint64
return: [int-ptr!]
]
;@@ void sqlite3_free(void*);
sqlite3_free: "sqlite3_free" [
arg1 [int-ptr!] ;void*
]
;@@ sqlite3_uint64 sqlite3_msize(void*);
sqlite3_msize: "sqlite3_msize" [
arg1 [int-ptr!] ;void*
return: [long-long!]
]
;- Memory Allocator Statistics
;
; SQLite provides these two interfaces for reporting on the status
; of the [sqlite3_malloc()], [sqlite3_free()], and [sqlite3_realloc()]
; routines, which form the built-in memory allocation subsystem.
;
; ^The [sqlite3_memory_used()] routine returns the number of bytes
; of memory currently outstanding (malloced but not freed).
; ^The [sqlite3_memory_highwater()] routine returns the maximum
; value of [sqlite3_memory_used()] since the high-water mark
; was last reset. ^The values returned by [sqlite3_memory_used()] and
; [sqlite3_memory_highwater()] include any overhead
; added by SQLite in its implementation of [sqlite3_malloc()],
; but not overhead added by the any underlying system library
; routines that [sqlite3_malloc()] may call.
;
; ^The memory high-water mark is reset to the current value of
; [sqlite3_memory_used()] if and only if the parameter to
; [sqlite3_memory_highwater()] is true. ^The value returned
; by [sqlite3_memory_highwater(1)] is the high-water mark
; prior to the reset.
;@@ sqlite3_int64 sqlite3_memory_used(void);
sqlite3_memory_used: "sqlite3_memory_used" [
return: [long-long!]
]
;@@ sqlite3_int64 sqlite3_memory_highwater(int resetFlag);
sqlite3_memory_highwater: "sqlite3_memory_highwater" [
resetFlag [integer!] ;int
return: [long-long!]
]
;- Pseudo-Random Number Generator
;
; SQLite contains a high-quality pseudo-random number generator (PRNG) used to
; select random [ROWID | ROWIDs] when inserting new records into a table that
; already uses the largest possible [ROWID]. The PRNG is also used for
; the build-in random() and randomblob() SQL functions. This interface allows
; applications to access the same PRNG for other purposes.
;
; ^A call to this routine stores N bytes of randomness into buffer P.
; ^The P parameter can be a NULL pointer.
;
; ^If this routine has not been previously called or if the previous
; call had N less than one or a NULL pointer for P, then the PRNG is
; seeded using randomness obtained from the xRandomness method of
; the default [sqlite3_vfs] object.
; ^If the previous call to this routine had an N of 1 or more and a
; non-NULL P then the pseudo-randomness is generated
; internally and without recourse to the [sqlite3_vfs] xRandomness
; method.
;@@ void sqlite3_randomness(int N, void *P);
sqlite3_randomness: "sqlite3_randomness" [
N [integer!] ;int
P [int-ptr!] ;void *
]
;- Compile-Time Authorization Callbacks
; METHOD: sqlite3
;
; ^This routine registers an authorizer callback with a particular
; [database connection], supplied in the first argument.
; ^The authorizer callback is invoked as SQL statements are being compiled
; by [sqlite3_prepare()] or its variants [sqlite3_prepare_v2()],
; [sqlite3_prepare16()] and [sqlite3_prepare16_v2()]. ^At various
; points during the compilation process, as logic is being created
; to perform various actions, the authorizer callback is invoked to
; see if those actions are allowed. ^The authorizer callback should
; return [SQLITE_OK] to allow the action, [SQLITE_IGNORE] to disallow the
; specific action but allow the SQL statement to continue to be
; compiled, or [SQLITE_DENY] to cause the entire SQL statement to be
; rejected with an error. ^If the authorizer callback returns
; any value other than [SQLITE_IGNORE], [SQLITE_OK], or [SQLITE_DENY]
; then the [sqlite3_prepare_v2()] or equivalent call that triggered
; the authorizer will fail with an error message.
;
; When the callback returns [SQLITE_OK], that means the operation
; requested is ok. ^When the callback returns [SQLITE_DENY], the
; [sqlite3_prepare_v2()] or equivalent call that triggered the
; authorizer will fail with an error message explaining that
; access is denied.
;
; ^The first parameter to the authorizer callback is a copy of the third
; parameter to the sqlite3_set_authorizer() interface. ^The second parameter
; to the callback is an integer [SQLITE_COPY | action code] that specifies
; the particular action to be authorized. ^The third through sixth parameters
; to the callback are zero-terminated strings that contain additional
; details about the action to be authorized.
;
; ^If the action code is [SQLITE_READ]
; and the callback returns [SQLITE_IGNORE] then the
; [prepared statement] statement is constructed to substitute
; a NULL value in place of the table column that would have
; been read if [SQLITE_OK] had been returned. The [SQLITE_IGNORE]
; return can be used to deny an untrusted user access to individual
; columns of a table.
; ^If the action code is [SQLITE_DELETE] and the callback returns
; [SQLITE_IGNORE] then the [DELETE] operation proceeds but the
; [truncate optimization] is disabled and all rows are deleted individually.
;
; An authorizer is used when [sqlite3_prepare | preparing]
; SQL statements from an untrusted source, to ensure that the SQL statements
; do not try to access data they are not allowed to see, or that they do not
; try to execute malicious statements that damage the database. For
; example, an application may allow a user to enter arbitrary
; SQL queries for evaluation by a database. But the application does
; not want the user to be able to make arbitrary changes to the
; database. An authorizer could then be put in place while the
; user-entered SQL is being [sqlite3_prepare | prepared] that
; disallows everything except [SELECT] statements.
;
; Applications that need to process SQL from untrusted sources
; might also consider lowering resource limits using [sqlite3_limit()]
; and limiting database size using the [max_page_count] [PRAGMA]
; in addition to using an authorizer.
;
; ^(Only a single authorizer can be in place on a database connection
; at a time. Each call to sqlite3_set_authorizer overrides the
; previous call.)^ ^Disable the authorizer by installing a NULL callback.
; The authorizer is disabled by default.
;
; The authorizer callback must not do anything that will modify
; the database connection that invoked the authorizer callback.
; Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
; database connections for the meaning of "modify" in this paragraph.
;
; ^When [sqlite3_prepare_v2()] is used to prepare a statement, the
; statement might be re-prepared during [sqlite3_step()] due to a
; schema change. Hence, the application should ensure that the
; correct authorizer callback remains in place during the [sqlite3_step()].
;
; ^Note that the authorizer callback is invoked only during
; [sqlite3_prepare()] or its variants. Authorization is not
; performed during statement evaluation in [sqlite3_step()], unless
; as stated in the previous paragraph, sqlite3_step() invokes
; sqlite3_prepare_v2() to reprepare a statement after a schema change.
;@@ int sqlite3_set_authorizer(
;@@ sqlite3*,
;@@ int (*xAuth)(void*,int,const char*,const char*,const char*,const char*),
;@@ void *pUserData
;@@);
sqlite3_set_authorizer: "sqlite3_set_authorizer" [
arg1 [sqlite3!] ;sqlite3*
xAuth [function! [
arg1 [int-ptr!]
arg2 [integer!]
arg3 [c-string!]
arg4 [c-string!]
arg5 [c-string!]
arg6 [c-string!]
return: [integer!]
]]
pUserData [int-ptr!] ;void *
return: [integer!]
]
;- Tracing And Profiling Functions
; METHOD: sqlite3
;
; These routines are deprecated. Use the [sqlite3_trace_v2()] interface
; instead of the routines described here.
;
; These routines register callback functions that can be used for
; tracing and profiling the execution of SQL statements.
;
; ^The callback function registered by sqlite3_trace() is invoked at
; various times when an SQL statement is being run by [sqlite3_step()].
; ^The sqlite3_trace() callback is invoked with a UTF-8 rendering of the
; SQL statement text as the statement first begins executing.
; ^(Additional sqlite3_trace() callbacks might occur
; as each triggered subprogram is entered. The callbacks for triggers
; contain a UTF-8 SQL comment that identifies the trigger.)^
;
; The [SQLITE_TRACE_SIZE_LIMIT] compile-time option can be used to limit
; the length of [bound parameter] expansion in the output of sqlite3_trace().
;
; ^The callback function registered by sqlite3_profile() is invoked
; as each SQL statement finishes. ^The profile callback contains
; the original statement text and an estimate of wall-clock time
; of how long that statement took to run. ^The profile callback
; time is in units of nanoseconds, however the current implementation
; is only capable of millisecond resolution so the six least significant
; digits in the time are meaningless. Future versions of SQLite
; might provide greater resolution on the profiler callback. The
; sqlite3_profile() function is considered experimental and is
; subject to change in future versions of SQLite.
;@@ void * sqlite3_trace(sqlite3*,
;@@ void(*xTrace)(void*,const char*), void*);
sqlite3_trace: "sqlite3_trace" [
arg1 [sqlite3!] ;sqlite3*
xTrace [function! [
arg1 [int-ptr!]
arg2 [c-string!]
]]
arg3 [int-ptr!] ;void*
return: [int-ptr!]
]
;@@ void * sqlite3_profile(sqlite3*,
;@@ void(*xProfile)(void*,const char*,sqlite3_uint64), void*);
sqlite3_profile: "sqlite3_profile" [
arg1 [sqlite3!] ;sqlite3*
xProfile [function! [
arg1 [int-ptr!]
arg2 [c-string!]
arg3 [long-long!]
]]
arg3 [int-ptr!] ;void*
return: [int-ptr!]
]
;- SQL Trace Hook
; METHOD: sqlite3
;
; ^The sqlite3_trace_v2(D,M,X,P) interface registers a trace callback
; function X against [database connection] D, using property mask M
; and context pointer P. ^If the X callback is
; NULL or if the M mask is zero, then tracing is disabled. The
; M argument should be the bitwise OR-ed combination of
; zero or more [SQLITE_TRACE] constants.
;
; ^Each call to either sqlite3_trace() or sqlite3_trace_v2() overrides
; (cancels) any prior calls to sqlite3_trace() or sqlite3_trace_v2().
;
; ^The X callback is invoked whenever any of the events identified by
; mask M occur. ^The integer return value from the callback is currently
; ignored, though this may change in future releases. Callback
; implementations should return zero to ensure future compatibility.
;
; ^A trace callback is invoked with four arguments: callback(T,C,P,X).
; ^The T argument is one of the [SQLITE_TRACE]
; constants to indicate why the callback was invoked.
; ^The C argument is a copy of the context pointer.
; The P and X arguments are pointers whose meanings depend on T.
;
; The sqlite3_trace_v2() interface is intended to replace the legacy
; interfaces [sqlite3_trace()] and [sqlite3_profile()], both of which
; are deprecated.
;@@ int sqlite3_trace_v2(
;@@ sqlite3*,
;@@ unsigned uMask,
;@@ int(*xCallback)(unsigned,void*,void*,void*),
;@@ void *pCtx
;@@);
sqlite3_trace_v2: "sqlite3_trace_v2" [
arg1 [sqlite3!] ;sqlite3*
uMask [integer!] ;unsigned
xCallback [function! [
arg1 [integer!]
arg2 [int-ptr!]
arg3 [int-ptr!]
arg4 [int-ptr!]
return: [integer!]
]]
pCtx [int-ptr!] ;void *
return: [integer!]
]
;- Query Progress Callbacks
; METHOD: sqlite3
;
; ^The sqlite3_progress_handler(D,N,X,P) interface causes the callback
; function X to be invoked periodically during long running calls to
; [sqlite3_exec()], [sqlite3_step()] and [sqlite3_get_table()] for
; database connection D. An example use for this
; interface is to keep a GUI updated during a large query.
;
; ^The parameter P is passed through as the only parameter to the
; callback function X. ^The parameter N is the approximate number of
; [virtual machine instructions] that are evaluated between successive
; invocations of the callback X. ^If N is less than one then the progress
; handler is disabled.
;
; ^Only a single progress handler may be defined at one time per
; [database connection]; setting a new progress handler cancels the
; old one. ^Setting parameter X to NULL disables the progress handler.
; ^The progress handler is also disabled by setting N to a value less
; than 1.
;
; ^If the progress callback returns non-zero, the operation is
; interrupted. This feature can be used to implement a
; "Cancel" button on a GUI progress dialog box.
;
; The progress handler callback must not do anything that will modify
; the database connection that invoked the progress handler.
; Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
; database connections for the meaning of "modify" in this paragraph.
;
;@@ void sqlite3_progress_handler(sqlite3*, int, int(*)(void*), void*);
sqlite3_progress_handler: "sqlite3_progress_handler" [
arg1 [sqlite3!] ;sqlite3*
arg2 [integer!] ;int
arg3 [function! [
arg1 [int-ptr!]
return: [integer!]
]]
arg4 [int-ptr!] ;void*
]
;- Opening A New Database Connection
; CONSTRUCTOR: sqlite3
;
; ^These routines open an SQLite database file as specified by the
; filename argument. ^The filename argument is interpreted as UTF-8 for
; sqlite3_open() and sqlite3_open_v2() and as UTF-16 in the native byte
; order for sqlite3_open16(). ^(A [database connection] handle is usually
; returned in *ppDb, even if an error occurs. The only exception is that
; if SQLite is unable to allocate memory to hold the [sqlite3] object,
; a NULL will be written into *ppDb instead of a pointer to the [sqlite3]
; object.)^ ^(If the database is opened (and/or created) successfully, then
; [SQLITE_OK] is returned. Otherwise an [error code] is returned.)^ ^The
; [sqlite3_errmsg()] or [sqlite3_errmsg16()] routines can be used to obtain
; an English language description of the error following a failure of any
; of the sqlite3_open() routines.
;
; ^The default encoding will be UTF-8 for databases created using
; sqlite3_open() or sqlite3_open_v2(). ^The default encoding for databases
; created using sqlite3_open16() will be UTF-16 in the native byte order.
;
; Whether or not an error occurs when it is opened, resources
; associated with the [database connection] handle should be released by
; passing it to [sqlite3_close()] when it is no longer required.
;
; The sqlite3_open_v2() interface works like sqlite3_open()
; except that it accepts two additional parameters for additional control
; over the new database connection. ^(The flags parameter to
; sqlite3_open_v2() can take one of
; the following three values, optionally combined with the
; [SQLITE_OPEN_NOMUTEX], [SQLITE_OPEN_FULLMUTEX], [SQLITE_OPEN_SHAREDCACHE],
; [SQLITE_OPEN_PRIVATECACHE], and/or [SQLITE_OPEN_URI] flags:)^
;
; <dl>
; ^(<dt>[SQLITE_OPEN_READONLY]</dt>
; <dd>The database is opened in read-only mode. If the database does not
; already exist, an error is returned.</dd>)^
;
; ^(<dt>[SQLITE_OPEN_READWRITE]</dt>
; <dd>The database is opened for reading and writing if possible, or reading
; only if the file is write protected by the operating system. In either
; case the database must already exist, otherwise an error is returned.</dd>)^
;
; ^(<dt>[SQLITE_OPEN_READWRITE] | [SQLITE_OPEN_CREATE]</dt>
; <dd>The database is opened for reading and writing, and is created if
; it does not already exist. This is the behavior that is always used for
; sqlite3_open() and sqlite3_open16().</dd>)^
; </dl>
;
; If the 3rd parameter to sqlite3_open_v2() is not one of the
; combinations shown above optionally combined with other
; [SQLITE_OPEN_READONLY | SQLITE_OPEN_* bits]
; then the behavior is undefined.
;
; ^If the [SQLITE_OPEN_NOMUTEX] flag is set, then the database connection
; opens in the multi-thread [threading mode] as long as the single-thread
; mode has not been set at compile-time or start-time. ^If the
; [SQLITE_OPEN_FULLMUTEX] flag is set then the database connection opens
; in the serialized [threading mode] unless single-thread was
; previously selected at compile-time or start-time.
; ^The [SQLITE_OPEN_SHAREDCACHE] flag causes the database connection to be
; eligible to use [shared cache mode], regardless of whether or not shared
; cache is enabled using [sqlite3_enable_shared_cache()]. ^The
; [SQLITE_OPEN_PRIVATECACHE] flag causes the database connection to not
; participate in [shared cache mode] even if it is enabled.
;
; ^The fourth parameter to sqlite3_open_v2() is the name of the
; [sqlite3_vfs] object that defines the operating system interface that
; the new database connection should use. ^If the fourth parameter is
; a NULL pointer then the default [sqlite3_vfs] object is used.
;
; ^If the filename is ":memory:", then a private, temporary in-memory database
; is created for the connection. ^This in-memory database will vanish when
; the database connection is closed. Future versions of SQLite might
; make use of additional special filenames that begin with the ":" character.
; It is recommended that when a database filename actually does begin with
; a ":" character you should prefix the filename with a pathname such as
; "./" to avoid ambiguity.
;
; ^If the filename is an empty string, then a private, temporary
; on-disk database will be created. ^This private database will be
; automatically deleted as soon as the database connection is closed.
;
; [[URI filenames in sqlite3_open()]] <h3>URI Filenames</h3>
;
; ^If [URI filename] interpretation is enabled, and the filename argument
; begins with "file:", then the filename is interpreted as a URI. ^URI
; filename interpretation is enabled if the [SQLITE_OPEN_URI] flag is
; set in the fourth argument to sqlite3_open_v2(), or if it has
; been enabled globally using the [SQLITE_CONFIG_URI] option with the
; [sqlite3_config()] method or by the [SQLITE_USE_URI] compile-time option.
; As of SQLite version 3.7.7, URI filename interpretation is turned off
; by default, but future releases of SQLite might enable URI filename
; interpretation by default. See "[URI filenames]" for additional
; information.
;
; URI filenames are parsed according to RFC 3986. ^If the URI contains an
; authority, then it must be either an empty string or the string
; "localhost". ^If the authority is not an empty string or "localhost", an
; error is returned to the caller. ^The fragment component of a URI, if
; present, is ignored.
;
; ^SQLite uses the path component of the URI as the name of the disk file
; which contains the database. ^If the path begins with a '/' character,
; then it is interpreted as an absolute path. ^If the path does not begin
; with a '/' (meaning that the authority section is omitted from the URI)
; then the path is interpreted as a relative path.
; ^(On windows, the first component of an absolute path
; is a drive specification (e.g. "C:").)^
;
; [[core URI query parameters]]
; The query component of a URI may contain parameters that are interpreted
; either by SQLite itself, or by a [VFS | custom VFS implementation].
; SQLite and its built-in [VFSes] interpret the
; following query parameters:
;
; <ul>
; <li> <b>vfs</b>: ^The "vfs" parameter may be used to specify the name of
; a VFS object that provides the operating system interface that should
; be used to access the database file on disk. ^If this option is set to
; an empty string the default VFS object is used. ^Specifying an unknown
; VFS is an error. ^If sqlite3_open_v2() is used and the vfs option is
; present, then the VFS specified by the option takes precedence over
; the value passed as the fourth parameter to sqlite3_open_v2().
;
; <li> <b>mode</b>: ^(The mode parameter may be set to either "ro", "rw",
; "rwc", or "memory". Attempting to set it to any other value is
; an error)^.
; ^If "ro" is specified, then the database is opened for read-only
; access, just as if the [SQLITE_OPEN_READONLY] flag had been set in the
; third argument to sqlite3_open_v2(). ^If the mode option is set to
; "rw", then the database is opened for read-write (but not create)
; access, as if SQLITE_OPEN_READWRITE (but not SQLITE_OPEN_CREATE) had
; been set. ^Value "rwc" is equivalent to setting both
; SQLITE_OPEN_READWRITE and SQLITE_OPEN_CREATE. ^If the mode option is
; set to "memory" then a pure [in-memory database] that never reads
; or writes from disk is used. ^It is an error to specify a value for
; the mode parameter that is less restrictive than that specified by
; the flags passed in the third parameter to sqlite3_open_v2().
;
; <li> <b>cache</b>: ^The cache parameter may be set to either "shared" or
; "private". ^Setting it to "shared" is equivalent to setting the
; SQLITE_OPEN_SHAREDCACHE bit in the flags argument passed to
; sqlite3_open_v2(). ^Setting the cache parameter to "private" is
; equivalent to setting the SQLITE_OPEN_PRIVATECACHE bit.
; ^If sqlite3_open_v2() is used and the "cache" parameter is present in
; a URI filename, its value overrides any behavior requested by setting
; SQLITE_OPEN_PRIVATECACHE or SQLITE_OPEN_SHAREDCACHE flag.
;
; <li> <b>psow</b>: ^The psow parameter indicates whether or not the
; [powersafe overwrite] property does or does not apply to the
; storage media on which the database file resides.
;
; <li> <b>nolock</b>: ^The nolock parameter is a boolean query parameter
; which if set disables file locking in rollback journal modes. This
; is useful for accessing a database on a filesystem that does not
; support locking. Caution: Database corruption might result if two
; or more processes write to the same database and any one of those
; processes uses nolock=1.
;
; <li> <b>immutable</b>: ^The immutable parameter is a boolean query
; parameter that indicates that the database file is stored on
; read-only media. ^When immutable is set, SQLite assumes that the
; database file cannot be changed, even by a process with higher
; privilege, and so the database is opened read-only and all locking
; and change detection is disabled. Caution: Setting the immutable
; property on a database file that does in fact change can result
; in incorrect query results and/or [SQLITE_CORRUPT] errors.
; See also: [SQLITE_IOCAP_IMMUTABLE].
;
; </ul>
;
; ^Specifying an unknown parameter in the query component of a URI is not an
; error. Future versions of SQLite might understand additional query
; parameters. See "[query parameters with special meaning to SQLite]" for
; additional information.
;
; [[URI filename examples]] <h3>URI filename examples</h3>
;
; <table border="1" align=center cellpadding=5>
; <tr><th> URI filenames <th> Results
; <tr><td> file:data.db <td>
; Open the file "data.db" in the current directory.
; <tr><td> file:/home/fred/data.db<br>
; file:///home/fred/data.db <br>
; file://localhost/home/fred/data.db <br> <td>
; Open the database file "/home/fred/data.db".
; <tr><td> file://darkstar/home/fred/data.db <td>
; An error. "darkstar" is not a recognized authority.
; <tr><td style="white-space:nowrap">
; file:///C:/Documents%20and%20Settings/fred/Desktop/data.db
; <td> Windows only: Open the file "data.db" on fred's desktop on drive
; C:. Note that the %20 escaping in this example is not strictly
; necessary - space characters can be used literally
; in URI filenames.
; <tr><td> file:data.db?mode=ro&cache=private <td>
; Open file "data.db" in the current directory for read-only access.
; Regardless of whether or not shared-cache mode is enabled by
; default, use a private cache.
; <tr><td> file:/home/fred/data.db?vfs=unix-dotfile <td>
; Open file "/home/fred/data.db". Use the special VFS "unix-dotfile"
; that uses dot-files in place of posix advisory locking.
; <tr><td> file:data.db?mode=readonly <td>
; An error. "readonly" is not a valid option for the "mode" parameter.
; </table>
;
; ^URI hexadecimal escape sequences (%HH) are supported within the path and
; query components of a URI. A hexadecimal escape sequence consists of a
; percent sign - "%" - followed by exactly two hexadecimal digits
; specifying an octet value. ^Before the path or query components of a
; URI filename are interpreted, they are encoded using UTF-8 and all
; hexadecimal escape sequences replaced by a single byte containing the
; corresponding octet. If this process generates an invalid UTF-8 encoding,
; the results are undefined.
;
; <b>Note to Windows users:</b> The encoding used for the filename argument
; of sqlite3_open() and sqlite3_open_v2() must be UTF-8, not whatever
; codepage is currently defined. Filenames containing international
; characters must be converted to UTF-8 prior to passing them into
; sqlite3_open() or sqlite3_open_v2().
;
; <b>Note to Windows Runtime users:</b> The temporary directory must be set
; prior to calling sqlite3_open() or sqlite3_open_v2(). Otherwise, various
; features that require the use of temporary files may fail.
;
; See also: [sqlite3_temp_directory]
;@@ int sqlite3_open(
;@@ const char *filename, /* Database filename (UTF-8) */
;@@ sqlite3 **ppDb /* OUT: SQLite db handle */
;@@);
sqlite3_open: "sqlite3_open" [
filename [c-string!] ; Database filename (UTF-8)
ppDb [sqlite3-ref!] ; OUT: SQLite db handle
return: [integer!]
]
;@@ int sqlite3_open16(
;@@ const void *filename, /* Database filename (UTF-16) */
;@@ sqlite3 **ppDb /* OUT: SQLite db handle */
;@@);
sqlite3_open16: "sqlite3_open16" [
filename [byte-ptr!] ; Database filename (UTF-16)
ppDb [sqlite3-ref!] ; OUT: SQLite db handle
return: [integer!]
]
;@@ int sqlite3_open_v2(
;@@ const char *filename, /* Database filename (UTF-8) */
;@@ sqlite3 **ppDb, /* OUT: SQLite db handle */
;@@ int flags, /* Flags */
;@@ const char *zVfs /* Name of VFS module to use */
;@@);
sqlite3_open_v2: "sqlite3_open_v2" [
filename [c-string!] ; Database filename (UTF-8)
ppDb [sqlite3-ref!] ; OUT: SQLite db handle
flags [integer!] ; Flags
zVfs [c-string!] ; Name of VFS module to use
return: [integer!]
]
;- Obtain Values For URI Parameters
;
; These are utility routines, useful to VFS implementations, that check
; to see if a database file was a URI that contained a specific query
; parameter, and if so obtains the value of that query parameter.
;
; If F is the database filename pointer passed into the xOpen() method of
; a VFS implementation when the flags parameter to xOpen() has one or
; more of the [SQLITE_OPEN_URI] or [SQLITE_OPEN_MAIN_DB] bits set and
; P is the name of the query parameter, then
; sqlite3_uri_parameter(F,P) returns the value of the P
; parameter if it exists or a NULL pointer if P does not appear as a
; query parameter on F. If P is a query parameter of F
; has no explicit value, then sqlite3_uri_parameter(F,P) returns
; a pointer to an empty string.
;
; The sqlite3_uri_boolean(F,P,B) routine assumes that P is a boolean
; parameter and returns true (1) or false (0) according to the value
; of P. The sqlite3_uri_boolean(F,P,B) routine returns true (1) if the
; value of query parameter P is one of "yes", "true", or "on" in any
; case or if the value begins with a non-zero number. The
; sqlite3_uri_boolean(F,P,B) routines returns false (0) if the value of
; query parameter P is one of "no", "false", or "off" in any case or
; if the value begins with a numeric zero. If P is not a query
; parameter on F or if the value of P is does not match any of the
; above, then sqlite3_uri_boolean(F,P,B) returns (B!=0).
;
; The sqlite3_uri_int64(F,P,D) routine converts the value of P into a
; 64-bit signed integer and returns that integer, or D if P does not
; exist. If the value of P is something other than an integer, then
; zero is returned.
;
; If F is a NULL pointer, then sqlite3_uri_parameter(F,P) returns NULL and
; sqlite3_uri_boolean(F,P,B) returns B. If F is not a NULL pointer and
; is not a database file pathname pointer that SQLite passed into the xOpen
; VFS method, then the behavior of this routine is undefined and probably
; undesirable.
;@@ const char * sqlite3_uri_parameter(const char *zFilename, const char *zParam);
sqlite3_uri_parameter: "sqlite3_uri_parameter" [
zFilename [c-string!] ;const char *
zParam [c-string!] ;const char *
return: [c-string!]
]
;@@ int sqlite3_uri_boolean(const char *zFile, const char *zParam, int bDefault);
sqlite3_uri_boolean: "sqlite3_uri_boolean" [
zFile [c-string!] ;const char *
zParam [c-string!] ;const char *
bDefault [integer!] ;int
return: [integer!]
]
;@@ sqlite3_int64 sqlite3_uri_int64(const char*, const char*, sqlite3_int64);
sqlite3_uri_int64: "sqlite3_uri_int64" [
arg1 [c-string!] ;const char*
arg2 [c-string!] ;const char*
arg3 [long-long!] ;sqlite3_int64
return: [long-long!]
]
;- Error Codes And Messages
; METHOD: sqlite3
;
; ^If the most recent sqlite3_* API call associated with
; [database connection] D failed, then the sqlite3_errcode(D) interface
; returns the numeric [result code] or [extended result code] for that
; API call.
; If the most recent API call was successful,
; then the return value from sqlite3_errcode() is undefined.
; ^The sqlite3_extended_errcode()
; interface is the same except that it always returns the
; [extended result code] even when extended result codes are
; disabled.
;
; ^The sqlite3_errmsg() and sqlite3_errmsg16() return English-language
; text that describes the error, as either UTF-8 or UTF-16 respectively.
; ^(Memory to hold the error message string is managed internally.
; The application does not need to worry about freeing the result.
; However, the error string might be overwritten or deallocated by
; subsequent calls to other SQLite interface functions.)^
;
; ^The sqlite3_errstr() interface returns the English-language text
; that describes the [result code], as UTF-8.
; ^(Memory to hold the error message string is managed internally
; and must not be freed by the application)^.
;
; When the serialized [threading mode] is in use, it might be the
; case that a second error occurs on a separate thread in between
; the time of the first error and the call to these interfaces.
; When that happens, the second error will be reported since these
; interfaces always report the most recent result. To avoid
; this, each thread can obtain exclusive use of the [database connection] D
; by invoking [sqlite3_mutex_enter]([sqlite3_db_mutex](D)) before beginning
; to use D and invoking [sqlite3_mutex_leave]([sqlite3_db_mutex](D)) after
; all calls to the interfaces listed here are completed.
;
; If an interface fails with SQLITE_MISUSE, that means the interface
; was invoked incorrectly by the application. In that case, the
; error code and message may or may not be set.
;@@ int sqlite3_errcode(sqlite3 *db);
sqlite3_errcode: "sqlite3_errcode" [
db [sqlite3!] ;sqlite3 *
return: [integer!]
]
;@@ int sqlite3_extended_errcode(sqlite3 *db);
sqlite3_extended_errcode: "sqlite3_extended_errcode" [
db [sqlite3!] ;sqlite3 *
return: [integer!]
]
;@@ const char * sqlite3_errmsg(sqlite3*);
sqlite3_errmsg: "sqlite3_errmsg" [
arg1 [sqlite3!] ;sqlite3*
return: [c-string!]
]
;@@ const void * sqlite3_errmsg16(sqlite3*);
sqlite3_errmsg16: "sqlite3_errmsg16" [
arg1 [sqlite3!] ;sqlite3*
return: [byte-ptr!]
]
;@@ const char * sqlite3_errstr(int);
sqlite3_errstr: "sqlite3_errstr" [
arg1 [integer!] ;int
return: [c-string!]
]
;- Run-time Limits
; METHOD: sqlite3
;
; ^(This interface allows the size of various constructs to be limited
; on a connection by connection basis. The first parameter is the
; [database connection] whose limit is to be set or queried. The
; second parameter is one of the [limit categories] that define a
; class of constructs to be size limited. The third parameter is the
; new limit for that construct.)^
;
; ^If the new limit is a negative number, the limit is unchanged.
; ^(For each limit category SQLITE_LIMIT_<i>NAME</i> there is a
; [limits | hard upper bound]
; set at compile-time by a C preprocessor macro called
; [limits | SQLITE_MAX_<i>NAME</i>].
; (The "_LIMIT_" in the name is changed to "_MAX_".))^
; ^Attempts to increase a limit above its hard upper bound are
; silently truncated to the hard upper bound.
;
; ^Regardless of whether or not the limit was changed, the
; [sqlite3_limit()] interface returns the prior value of the limit.
; ^Hence, to find the current value of a limit without changing it,
; simply invoke this interface with the third parameter set to -1.
;
; Run-time limits are intended for use in applications that manage
; both their own internal database and also databases that are controlled
; by untrusted external sources. An example application might be a
; web browser that has its own databases for storing history and
; separate databases controlled by JavaScript applications downloaded
; off the Internet. The internal databases can be given the
; large, default limits. Databases managed by external sources can
; be given much smaller limits designed to prevent a denial of service
; attack. Developers might also want to use the [sqlite3_set_authorizer()]
; interface to further control untrusted SQL. The size of the database
; created by an untrusted script can be contained using the
; [max_page_count] [PRAGMA].
;
; New run-time limit categories may be added in future releases.
;@@ int sqlite3_limit(sqlite3*, int id, int newVal);
sqlite3_limit: "sqlite3_limit" [
arg1 [sqlite3!] ;sqlite3*
id [integer!] ;int
newVal [integer!] ;int
return: [integer!]
]
;- Compiling An SQL Statement
; KEYWORDS: {SQL statement compiler}
; METHOD: sqlite3
; CONSTRUCTOR: sqlite3_stmt
;
; To execute an SQL query, it must first be compiled into a byte-code
; program using one of these routines.
;
; The first argument, "db", is a [database connection] obtained from a
; prior successful call to [sqlite3_open()], [sqlite3_open_v2()] or
; [sqlite3_open16()]. The database connection must not have been closed.
;
; The second argument, "zSql", is the statement to be compiled, encoded
; as either UTF-8 or UTF-16. The sqlite3_prepare() and sqlite3_prepare_v2()
; interfaces use UTF-8, and sqlite3_prepare16() and sqlite3_prepare16_v2()
; use UTF-16.
;
; ^If the nByte argument is negative, then zSql is read up to the
; first zero terminator. ^If nByte is positive, then it is the
; number of bytes read from zSql. ^If nByte is zero, then no prepared
; statement is generated.
; If the caller knows that the supplied string is nul-terminated, then
; there is a small performance advantage to passing an nByte parameter that
; is the number of bytes in the input string <i>including</i>
; the nul-terminator.
;
; ^If pzTail is not NULL then *pzTail is made to point to the first byte
; past the end of the first SQL statement in zSql. These routines only
; compile the first statement in zSql, so *pzTail is left pointing to
; what remains uncompiled.
;
; ^*ppStmt is left pointing to a compiled [prepared statement] that can be
; executed using [sqlite3_step()]. ^If there is an error, *ppStmt is set
; to NULL. ^If the input text contains no SQL (if the input is an empty
; string or a comment) then *ppStmt is set to NULL.
; The calling procedure is responsible for deleting the compiled
; SQL statement using [sqlite3_finalize()] after it has finished with it.
; ppStmt may not be NULL.
;
; ^On success, the sqlite3_prepare() family of routines return [SQLITE_OK];
; otherwise an [error code] is returned.
;
; The sqlite3_prepare_v2() and sqlite3_prepare16_v2() interfaces are
; recommended for all new programs. The two older interfaces are retained
; for backwards compatibility, but their use is discouraged.
; ^In the "v2" interfaces, the prepared statement
; that is returned (the [sqlite3_stmt] object) contains a copy of the
; original SQL text. This causes the [sqlite3_step()] interface to
; behave differently in three ways:
;
; <ol>
; <li>
; ^If the database schema changes, instead of returning [SQLITE_SCHEMA] as it
; always used to do, [sqlite3_step()] will automatically recompile the SQL
; statement and try to run it again. As many as [SQLITE_MAX_SCHEMA_RETRY]
; retries will occur before sqlite3_step() gives up and returns an error.
; </li>
;
; <li>
; ^When an error occurs, [sqlite3_step()] will return one of the detailed
; [error codes] or [extended error codes]. ^The legacy behavior was that
; [sqlite3_step()] would only return a generic [SQLITE_ERROR] result code
; and the application would have to make a second call to [sqlite3_reset()]
; in order to find the underlying cause of the problem. With the "v2" prepare
; interfaces, the underlying reason for the error is returned immediately.
; </li>
;
; <li>
; ^If the specific value bound to [parameter | host parameter] in the
; WHERE clause might influence the choice of query plan for a statement,
; then the statement will be automatically recompiled, as if there had been
; a schema change, on the first [sqlite3_step()] call following any change
; to the [sqlite3_bind_text | bindings] of that [parameter].
; ^The specific value of WHERE-clause [parameter] might influence the
; choice of query plan if the parameter is the left-hand side of a [LIKE]
; or [GLOB] operator or if the parameter is compared to an indexed column
; and the [SQLITE_ENABLE_STAT3] compile-time option is enabled.
; </li>
; </ol>
;@@ int sqlite3_prepare(
;@@ sqlite3 *db, /* Database handle */
;@@ const char *zSql, /* SQL statement, UTF-8 encoded */
;@@ int nByte, /* Maximum length of zSql in bytes. */
;@@ sqlite3_stmt **ppStmt, /* OUT: Statement handle */
;@@ const char **pzTail /* OUT: Pointer to unused portion of zSql */
;@@);
sqlite3_prepare: "sqlite3_prepare" [
db [sqlite3!] ; Database handle
zSql [c-string!] ; SQL statement, UTF-8 encoded
nByte [integer!] ; Maximum length of zSql in bytes.
ppStmt [sqlite3-stmt-ref!] ; OUT: Statement handle
pzTail [string-ref!] ; OUT: Pointer to unused portion of zSql
return: [integer!]
]
;@@ int sqlite3_prepare_v2(
;@@ sqlite3 *db, /* Database handle */
;@@ const char *zSql, /* SQL statement, UTF-8 encoded */
;@@ int nByte, /* Maximum length of zSql in bytes. */
;@@ sqlite3_stmt **ppStmt, /* OUT: Statement handle */
;@@ const char **pzTail /* OUT: Pointer to unused portion of zSql */
;@@);
sqlite3_prepare_v2: "sqlite3_prepare_v2" [
db [sqlite3!] ; Database handle
zSql [c-string!] ; SQL statement, UTF-8 encoded
nByte [integer!] ; Maximum length of zSql in bytes.
ppStmt [sqlite3-stmt-ref!] ; OUT: Statement handle
pzTail [string-ref!] ; OUT: Pointer to unused portion of zSql
return: [integer!]
]
;@@ int sqlite3_prepare16(
;@@ sqlite3 *db, /* Database handle */
;@@ const void *zSql, /* SQL statement, UTF-16 encoded */
;@@ int nByte, /* Maximum length of zSql in bytes. */
;@@ sqlite3_stmt **ppStmt, /* OUT: Statement handle */
;@@ const void **pzTail /* OUT: Pointer to unused portion of zSql */
;@@);
sqlite3_prepare16: "sqlite3_prepare16" [
db [sqlite3!] ; Database handle
zSql [byte-ptr!] ; SQL statement, UTF-16 encoded
nByte [integer!] ; Maximum length of zSql in bytes.
ppStmt [sqlite3-stmt-ref!] ; OUT: Statement handle
pzTail [binary-ref!] ; OUT: Pointer to unused portion of zSql
return: [integer!]
]
;@@ int sqlite3_prepare16_v2(
;@@ sqlite3 *db, /* Database handle */
;@@ const void *zSql, /* SQL statement, UTF-16 encoded */
;@@ int nByte, /* Maximum length of zSql in bytes. */
;@@ sqlite3_stmt **ppStmt, /* OUT: Statement handle */
;@@ const void **pzTail /* OUT: Pointer to unused portion of zSql */
;@@);
sqlite3_prepare16_v2: "sqlite3_prepare16_v2" [
db [sqlite3!] ; Database handle
zSql [byte-ptr!] ; SQL statement, UTF-16 encoded
nByte [integer!] ; Maximum length of zSql in bytes.
ppStmt [sqlite3-stmt-ref!] ; OUT: Statement handle
pzTail [binary-ref!] ; OUT: Pointer to unused portion of zSql
return: [integer!]
]
;- Retrieving Statement SQL
; METHOD: sqlite3_stmt
;
; ^The sqlite3_sql(P) interface returns a pointer to a copy of the UTF-8
; SQL text used to create [prepared statement] P if P was
; created by either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()].
; ^The sqlite3_expanded_sql(P) interface returns a pointer to a UTF-8
; string containing the SQL text of prepared statement P with
; [bound parameters] expanded.
;
; ^(For example, if a prepared statement is created using the SQL
; text "SELECT $abc,:xyz" and if parameter $abc is bound to integer 2345
; and parameter :xyz is unbound, then sqlite3_sql() will return
; the original string, "SELECT $abc,:xyz" but sqlite3_expanded_sql()
; will return "SELECT 2345,NULL".)^
;
; ^The sqlite3_expanded_sql() interface returns NULL if insufficient memory
; is available to hold the result, or if the result would exceed the
; the maximum string length determined by the [SQLITE_LIMIT_LENGTH].
;
; ^The [SQLITE_TRACE_SIZE_LIMIT] compile-time option limits the size of
; bound parameter expansions. ^The [SQLITE_OMIT_TRACE] compile-time
; option causes sqlite3_expanded_sql() to always return NULL.
;
; ^The string returned by sqlite3_sql(P) is managed by SQLite and is
; automatically freed when the prepared statement is finalized.
; ^The string returned by sqlite3_expanded_sql(P), on the other hand,
; is obtained from [sqlite3_malloc()] and must be free by the application
; by passing it to [sqlite3_free()].
;@@ const char * sqlite3_sql(sqlite3_stmt *pStmt);
sqlite3_sql: "sqlite3_sql" [
pStmt [sqlite3-stmt!] ;sqlite3_stmt *
return: [c-string!]
]
;@@ char * sqlite3_expanded_sql(sqlite3_stmt *pStmt);
sqlite3_expanded_sql: "sqlite3_expanded_sql" [
pStmt [sqlite3-stmt!] ;sqlite3_stmt *
return: [c-string!]
]
;- Determine If An SQL Statement Writes The Database
; METHOD: sqlite3_stmt
;
; ^The sqlite3_stmt_readonly(X) interface returns true (non-zero) if
; and only if the [prepared statement] X makes no direct changes to
; the content of the database file.
;
; Note that [application-defined SQL functions] or
; [virtual tables] might change the database indirectly as a side effect.
; ^(For example, if an application defines a function "eval()" that
; calls [sqlite3_exec()], then the following SQL statement would
; change the database file through side-effects:
;
; <blockquote><pre>
; SELECT eval('DELETE FROM t1') FROM t2;
; </pre></blockquote>
;
; But because the [SELECT] statement does not change the database file
; directly, sqlite3_stmt_readonly() would still return true.)^
;
; ^Transaction control statements such as [BEGIN], [COMMIT], [ROLLBACK],
; [SAVEPOINT], and [RELEASE] cause sqlite3_stmt_readonly() to return true,
; since the statements themselves do not actually modify the database but
; rather they control the timing of when other statements modify the
; database. ^The [ATTACH] and [DETACH] statements also cause
; sqlite3_stmt_readonly() to return true since, while those statements
; change the configuration of a database connection, they do not make
; changes to the content of the database files on disk.
; ^The sqlite3_stmt_readonly() interface returns true for [BEGIN] since
; [BEGIN] merely sets internal flags, but the [BEGIN|BEGIN IMMEDIATE] and
; [BEGIN|BEGIN EXCLUSIVE] commands do touch the database and so
; sqlite3_stmt_readonly() returns false for those commands.
;@@ int sqlite3_stmt_readonly(sqlite3_stmt *pStmt);
sqlite3_stmt_readonly: "sqlite3_stmt_readonly" [
pStmt [sqlite3-stmt!] ;sqlite3_stmt *
return: [integer!]
]
;- Determine If A Prepared Statement Has Been Reset
; METHOD: sqlite3_stmt
;
; ^The sqlite3_stmt_busy(S) interface returns true (non-zero) if the
; [prepared statement] S has been stepped at least once using
; [sqlite3_step(S)] but has neither run to completion (returned
; [SQLITE_DONE] from [sqlite3_step(S)]) nor
; been reset using [sqlite3_reset(S)]. ^The sqlite3_stmt_busy(S)
; interface returns false if S is a NULL pointer. If S is not a
; NULL pointer and is not a pointer to a valid [prepared statement]
; object, then the behavior is undefined and probably undesirable.
;
; This interface can be used in combination [sqlite3_next_stmt()]
; to locate all prepared statements associated with a database
; connection that are in need of being reset. This can be used,
; for example, in diagnostic routines to search for prepared
; statements that are holding a transaction open.
;@@ int sqlite3_stmt_busy(sqlite3_stmt*);
sqlite3_stmt_busy: "sqlite3_stmt_busy" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
return: [integer!]
]
;- Binding Values To Prepared Statements
; KEYWORDS: {host parameter} {host parameters} {host parameter name}
; KEYWORDS: {SQL parameter} {SQL parameters} {parameter binding}
; METHOD: sqlite3_stmt
;
; ^(In the SQL statement text input to [sqlite3_prepare_v2()] and its variants,
; literals may be replaced by a [parameter] that matches one of following
; templates:
;
; <ul>
; <li> ?
; <li> ?NNN
; <li> :VVV
; <li> @VVV
; <li> $VVV
; </ul>
;
; In the templates above, NNN represents an integer literal,
; and VVV represents an alphanumeric identifier.)^ ^The values of these
; parameters (also called "host parameter names" or "SQL parameters")
; can be set using the sqlite3_bind_*() routines defined here.
;
; ^The first argument to the sqlite3_bind_*() routines is always
; a pointer to the [sqlite3_stmt] object returned from
; [sqlite3_prepare_v2()] or its variants.
;
; ^The second argument is the index of the SQL parameter to be set.
; ^The leftmost SQL parameter has an index of 1. ^When the same named
; SQL parameter is used more than once, second and subsequent
; occurrences have the same index as the first occurrence.
; ^The index for named parameters can be looked up using the
; [sqlite3_bind_parameter_index()] API if desired. ^The index
; for "?NNN" parameters is the value of NNN.
; ^The NNN value must be between 1 and the [sqlite3_limit()]
; parameter [SQLITE_LIMIT_VARIABLE_NUMBER] (default value: 999).
;
; ^The third argument is the value to bind to the parameter.
; ^If the third parameter to sqlite3_bind_text() or sqlite3_bind_text16()
; or sqlite3_bind_blob() is a NULL pointer then the fourth parameter
; is ignored and the end result is the same as sqlite3_bind_null().
;
; ^(In those routines that have a fourth argument, its value is the
; number of bytes in the parameter. To be clear: the value is the
; number of <u>bytes</u> in the value, not the number of characters.)^
; ^If the fourth parameter to sqlite3_bind_text() or sqlite3_bind_text16()
; is negative, then the length of the string is
; the number of bytes up to the first zero terminator.
; If the fourth parameter to sqlite3_bind_blob() is negative, then
; the behavior is undefined.
; If a non-negative fourth parameter is provided to sqlite3_bind_text()
; or sqlite3_bind_text16() or sqlite3_bind_text64() then
; that parameter must be the byte offset
; where the NUL terminator would occur assuming the string were NUL
; terminated. If any NUL characters occur at byte offsets less than
; the value of the fourth parameter then the resulting string value will
; contain embedded NULs. The result of expressions involving strings
; with embedded NULs is undefined.
;
; ^The fifth argument to the BLOB and string binding interfaces
; is a destructor used to dispose of the BLOB or
; string after SQLite has finished with it. ^The destructor is called
; to dispose of the BLOB or string even if the call to bind API fails.
; ^If the fifth argument is
; the special value [SQLITE_STATIC], then SQLite assumes that the
; information is in static, unmanaged space and does not need to be freed.
; ^If the fifth argument has the value [SQLITE_TRANSIENT], then
; SQLite makes its own private copy of the data immediately, before
; the sqlite3_bind_*() routine returns.
;
; ^The sixth argument to sqlite3_bind_text64() must be one of
; [SQLITE_UTF8], [SQLITE_UTF16], [SQLITE_UTF16BE], or [SQLITE_UTF16LE]
; to specify the encoding of the text in the third parameter. If
; the sixth argument to sqlite3_bind_text64() is not one of the
; allowed values shown above, or if the text encoding is different
; from the encoding specified by the sixth parameter, then the behavior
; is undefined.
;
; ^The sqlite3_bind_zeroblob() routine binds a BLOB of length N that
; is filled with zeroes. ^A zeroblob uses a fixed amount of memory
; (just an integer to hold its size) while it is being processed.
; Zeroblobs are intended to serve as placeholders for BLOBs whose
; content is later written using
; [sqlite3_blob_open | incremental BLOB I/O] routines.
; ^A negative value for the zeroblob results in a zero-length BLOB.
;
; ^If any of the sqlite3_bind_*() routines are called with a NULL pointer
; for the [prepared statement] or with a prepared statement for which
; [sqlite3_step()] has been called more recently than [sqlite3_reset()],
; then the call will return [SQLITE_MISUSE]. If any sqlite3_bind_()
; routine is passed a [prepared statement] that has been finalized, the
; result is undefined and probably harmful.
;
; ^Bindings are not cleared by the [sqlite3_reset()] routine.
; ^Unbound parameters are interpreted as NULL.
;
; ^The sqlite3_bind_* routines return [SQLITE_OK] on success or an
; [error code] if anything goes wrong.
; ^[SQLITE_TOOBIG] might be returned if the size of a string or BLOB
; exceeds limits imposed by [sqlite3_limit]([SQLITE_LIMIT_LENGTH]) or
; [SQLITE_MAX_LENGTH].
; ^[SQLITE_RANGE] is returned if the parameter
; index is out of range. ^[SQLITE_NOMEM] is returned if malloc() fails.
;
; See also: [sqlite3_bind_parameter_count()],
; [sqlite3_bind_parameter_name()], and [sqlite3_bind_parameter_index()].
;@@ int sqlite3_bind_blob(sqlite3_stmt*, int, const void*, int n, void(*)(void*));
sqlite3_bind_blob: "sqlite3_bind_blob" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [byte-ptr!] ;const void*
n [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_bind_blob64(sqlite3_stmt*, int, const void*, sqlite3_uint64,
;@@ void(*)(void*));
sqlite3_bind_blob64: "sqlite3_bind_blob64" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [byte-ptr!] ;const void*
arg4 [long-long!] ;sqlite3_uint64
return: [integer!]
]
;@@ int sqlite3_bind_double(sqlite3_stmt*, int, double);
sqlite3_bind_double: "sqlite3_bind_double" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [float!] ;double
return: [integer!]
]
;@@ int sqlite3_bind_int(sqlite3_stmt*, int, int);
sqlite3_bind_int: "sqlite3_bind_int" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_bind_int64(sqlite3_stmt*, int, sqlite3_int64);
sqlite3_bind_int64: "sqlite3_bind_int64" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [long-long!] ;sqlite3_int64
return: [integer!]
]
;@@ int sqlite3_bind_null(sqlite3_stmt*, int);
sqlite3_bind_null: "sqlite3_bind_null" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_bind_text(sqlite3_stmt*,int,const char*,int,void(*)(void*));
sqlite3_bind_text: "sqlite3_bind_text" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [c-string!] ;const char*
arg4 [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_bind_text16(sqlite3_stmt*, int, const void*, int, void(*)(void*));
sqlite3_bind_text16: "sqlite3_bind_text16" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [byte-ptr!] ;const void*
arg4 [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_bind_text64(sqlite3_stmt*, int, const char*, sqlite3_uint64,
;@@ void(*)(void*), unsigned char encoding);
sqlite3_bind_text64: "sqlite3_bind_text64" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [c-string!] ;const char*
arg4 [long-long!] ;sqlite3_uint64
arg5 [function! [
arg1 [int-ptr!]
]]
encoding [byte!] ;unsigned char
return: [integer!]
]
;@@ int sqlite3_bind_value(sqlite3_stmt*, int, const sqlite3_value*);
sqlite3_bind_value: "sqlite3_bind_value" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [sqlite3-value!] ;const sqlite3_value*
return: [integer!]
]
;@@ int sqlite3_bind_zeroblob(sqlite3_stmt*, int, int n);
sqlite3_bind_zeroblob: "sqlite3_bind_zeroblob" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
n [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_bind_zeroblob64(sqlite3_stmt*, int, sqlite3_uint64);
sqlite3_bind_zeroblob64: "sqlite3_bind_zeroblob64" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
arg3 [long-long!] ;sqlite3_uint64
return: [integer!]
]
;- Number Of SQL Parameters
; METHOD: sqlite3_stmt
;
; ^This routine can be used to find the number of [SQL parameters]
; in a [prepared statement]. SQL parameters are tokens of the
; form "?", "?NNN", ":AAA", "$AAA", or "@AAA" that serve as
; placeholders for values that are [sqlite3_bind_blob | bound]
; to the parameters at a later time.
;
; ^(This routine actually returns the index of the largest (rightmost)
; parameter. For all forms except ?NNN, this will correspond to the
; number of unique parameters. If parameters of the ?NNN form are used,
; there may be gaps in the list.)^
;
; See also: [sqlite3_bind_blob|sqlite3_bind()],
; [sqlite3_bind_parameter_name()], and
; [sqlite3_bind_parameter_index()].
;@@ int sqlite3_bind_parameter_count(sqlite3_stmt*);
sqlite3_bind_parameter_count: "sqlite3_bind_parameter_count" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
return: [integer!]
]
;- Name Of A Host Parameter
; METHOD: sqlite3_stmt
;
; ^The sqlite3_bind_parameter_name(P,N) interface returns
; the name of the N-th [SQL parameter] in the [prepared statement] P.
; ^(SQL parameters of the form "?NNN" or ":AAA" or "@AAA" or "$AAA"
; have a name which is the string "?NNN" or ":AAA" or "@AAA" or "$AAA"
; respectively.
; In other words, the initial ":" or "$" or "@" or "?"
; is included as part of the name.)^
; ^Parameters of the form "?" without a following integer have no name
; and are referred to as "nameless" or "anonymous parameters".
;
; ^The first host parameter has an index of 1, not 0.
;
; ^If the value N is out of range or if the N-th parameter is
; nameless, then NULL is returned. ^The returned string is
; always in UTF-8 encoding even if the named parameter was
; originally specified as UTF-16 in [sqlite3_prepare16()] or
; [sqlite3_prepare16_v2()].
;
; See also: [sqlite3_bind_blob|sqlite3_bind()],
; [sqlite3_bind_parameter_count()], and
; [sqlite3_bind_parameter_index()].
;@@ const char * sqlite3_bind_parameter_name(sqlite3_stmt*, int);
sqlite3_bind_parameter_name: "sqlite3_bind_parameter_name" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [c-string!]
]
;- Index Of A Parameter With A Given Name
; METHOD: sqlite3_stmt
;
; ^Return the index of an SQL parameter given its name. ^The
; index value returned is suitable for use as the second
; parameter to [sqlite3_bind_blob|sqlite3_bind()]. ^A zero
; is returned if no matching parameter is found. ^The parameter
; name must be given in UTF-8 even if the original statement
; was prepared from UTF-16 text using [sqlite3_prepare16_v2()].
;
; See also: [sqlite3_bind_blob|sqlite3_bind()],
; [sqlite3_bind_parameter_count()], and
; [sqlite3_bind_parameter_name()].
;@@ int sqlite3_bind_parameter_index(sqlite3_stmt*, const char *zName);
sqlite3_bind_parameter_index: "sqlite3_bind_parameter_index" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
zName [c-string!] ;const char *
return: [integer!]
]
;- Reset All Bindings On A Prepared Statement
; METHOD: sqlite3_stmt
;
; ^Contrary to the intuition of many, [sqlite3_reset()] does not reset
; the [sqlite3_bind_blob | bindings] on a [prepared statement].
; ^Use this routine to reset all host parameters to NULL.
;@@ int sqlite3_clear_bindings(sqlite3_stmt*);
sqlite3_clear_bindings: "sqlite3_clear_bindings" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
return: [integer!]
]
;- Number Of Columns In A Result Set
; METHOD: sqlite3_stmt
;
; ^Return the number of columns in the result set returned by the
; [prepared statement]. ^If this routine returns 0, that means the
; [prepared statement] returns no data (for example an [UPDATE]).
; ^However, just because this routine returns a positive number does not
; mean that one or more rows of data will be returned. ^A SELECT statement
; will always have a positive sqlite3_column_count() but depending on the
; WHERE clause constraints and the table content, it might return no rows.
;
; See also: [sqlite3_data_count()]
;@@ int sqlite3_column_count(sqlite3_stmt *pStmt);
sqlite3_column_count: "sqlite3_column_count" [
pStmt [sqlite3-stmt!] ;sqlite3_stmt *
return: [integer!]
]
;- Column Names In A Result Set
; METHOD: sqlite3_stmt
;
; ^These routines return the name assigned to a particular column
; in the result set of a [SELECT] statement. ^The sqlite3_column_name()
; interface returns a pointer to a zero-terminated UTF-8 string
; and sqlite3_column_name16() returns a pointer to a zero-terminated
; UTF-16 string. ^The first parameter is the [prepared statement]
; that implements the [SELECT] statement. ^The second parameter is the
; column number. ^The leftmost column is number 0.
;
; ^The returned string pointer is valid until either the [prepared statement]
; is destroyed by [sqlite3_finalize()] or until the statement is automatically
; reprepared by the first call to [sqlite3_step()] for a particular run
; or until the next call to
; sqlite3_column_name() or sqlite3_column_name16() on the same column.
;
; ^If sqlite3_malloc() fails during the processing of either routine
; (for example during a conversion from UTF-8 to UTF-16) then a
; NULL pointer is returned.
;
; ^The name of a result column is the value of the "AS" clause for
; that column, if there is an AS clause. If there is no AS clause
; then the name of the column is unspecified and may change from
; one release of SQLite to the next.
;@@ const char * sqlite3_column_name(sqlite3_stmt*, int N);
sqlite3_column_name: "sqlite3_column_name" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
N [integer!] ;int
return: [c-string!]
]
;@@ const void * sqlite3_column_name16(sqlite3_stmt*, int N);
sqlite3_column_name16: "sqlite3_column_name16" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
N [integer!] ;int
return: [byte-ptr!]
]
;- Source Of Data In A Query Result
; METHOD: sqlite3_stmt
;
; ^These routines provide a means to determine the database, table, and
; table column that is the origin of a particular result column in
; [SELECT] statement.
; ^The name of the database or table or column can be returned as
; either a UTF-8 or UTF-16 string. ^The _database_ routines return
; the database name, the _table_ routines return the table name, and
; the origin_ routines return the column name.
; ^The returned string is valid until the [prepared statement] is destroyed
; using [sqlite3_finalize()] or until the statement is automatically
; reprepared by the first call to [sqlite3_step()] for a particular run
; or until the same information is requested
; again in a different encoding.
;
; ^The names returned are the original un-aliased names of the
; database, table, and column.
;
; ^The first argument to these interfaces is a [prepared statement].
; ^These functions return information about the Nth result column returned by
; the statement, where N is the second function argument.
; ^The left-most column is column 0 for these routines.
;
; ^If the Nth column returned by the statement is an expression or
; subquery and is not a column value, then all of these functions return
; NULL. ^These routine might also return NULL if a memory allocation error
; occurs. ^Otherwise, they return the name of the attached database, table,
; or column that query result column was extracted from.
;
; ^As with all other SQLite APIs, those whose names end with "16" return
; UTF-16 encoded strings and the other functions return UTF-8.
;
; ^These APIs are only available if the library was compiled with the
; [SQLITE_ENABLE_COLUMN_METADATA] C-preprocessor symbol.
;
; If two or more threads call one or more of these routines against the same
; prepared statement and column at the same time then the results are
; undefined.
;
; If two or more threads call one or more
; [sqlite3_column_database_name | column metadata interfaces]
; for the same [prepared statement] and result column
; at the same time then the results are undefined.
;@@ const char * sqlite3_column_database_name(sqlite3_stmt*,int);
sqlite3_column_database_name: "sqlite3_column_database_name" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [c-string!]
]
;@@ const void * sqlite3_column_database_name16(sqlite3_stmt*,int);
sqlite3_column_database_name16: "sqlite3_column_database_name16" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [byte-ptr!]
]
;@@ const char * sqlite3_column_table_name(sqlite3_stmt*,int);
sqlite3_column_table_name: "sqlite3_column_table_name" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [c-string!]
]
;@@ const void * sqlite3_column_table_name16(sqlite3_stmt*,int);
sqlite3_column_table_name16: "sqlite3_column_table_name16" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [byte-ptr!]
]
;@@ const char * sqlite3_column_origin_name(sqlite3_stmt*,int);
sqlite3_column_origin_name: "sqlite3_column_origin_name" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [c-string!]
]
;@@ const void * sqlite3_column_origin_name16(sqlite3_stmt*,int);
sqlite3_column_origin_name16: "sqlite3_column_origin_name16" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [byte-ptr!]
]
;- Declared Datatype Of A Query Result
; METHOD: sqlite3_stmt
;
; ^(The first parameter is a [prepared statement].
; If this statement is a [SELECT] statement and the Nth column of the
; returned result set of that [SELECT] is a table column (not an
; expression or subquery) then the declared type of the table
; column is returned.)^ ^If the Nth column of the result set is an
; expression or subquery, then a NULL pointer is returned.
; ^The returned string is always UTF-8 encoded.
;
; ^(For example, given the database schema:
;
; CREATE TABLE t1(c1 VARIANT);
;
; and the following statement to be compiled:
;
; SELECT c1 + 1, c1 FROM t1;
;
; this routine would return the string "VARIANT" for the second result
; column (i==1), and a NULL pointer for the first result column (i==0).)^
;
; ^SQLite uses dynamic run-time typing. ^So just because a column
; is declared to contain a particular type does not mean that the
; data stored in that column is of the declared type. SQLite is
; strongly typed, but the typing is dynamic not static. ^Type
; is associated with individual values, not with the containers
; used to hold those values.
;@@ const char * sqlite3_column_decltype(sqlite3_stmt*,int);
sqlite3_column_decltype: "sqlite3_column_decltype" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [c-string!]
]
;@@ const void * sqlite3_column_decltype16(sqlite3_stmt*,int);
sqlite3_column_decltype16: "sqlite3_column_decltype16" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [integer!] ;int
return: [byte-ptr!]
]
;- Evaluate An SQL Statement
; METHOD: sqlite3_stmt
;
; After a [prepared statement] has been prepared using either
; [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] or one of the legacy
; interfaces [sqlite3_prepare()] or [sqlite3_prepare16()], this function
; must be called one or more times to evaluate the statement.
;
; The details of the behavior of the sqlite3_step() interface depend
; on whether the statement was prepared using the newer "v2" interface
; [sqlite3_prepare_v2()] and [sqlite3_prepare16_v2()] or the older legacy
; interface [sqlite3_prepare()] and [sqlite3_prepare16()]. The use of the
; new "v2" interface is recommended for new applications but the legacy
; interface will continue to be supported.
;
; ^In the legacy interface, the return value will be either [SQLITE_BUSY],
; [SQLITE_DONE], [SQLITE_ROW], [SQLITE_ERROR], or [SQLITE_MISUSE].
; ^With the "v2" interface, any of the other [result codes] or
; [extended result codes] might be returned as well.
;
; ^[SQLITE_BUSY] means that the database engine was unable to acquire the
; database locks it needs to do its job. ^If the statement is a [COMMIT]
; or occurs outside of an explicit transaction, then you can retry the
; statement. If the statement is not a [COMMIT] and occurs within an
; explicit transaction then you should rollback the transaction before
; continuing.
;
; ^[SQLITE_DONE] means that the statement has finished executing
; successfully. sqlite3_step() should not be called again on this virtual
; machine without first calling [sqlite3_reset()] to reset the virtual
; machine back to its initial state.
;
; ^If the SQL statement being executed returns any data, then [SQLITE_ROW]
; is returned each time a new row of data is ready for processing by the
; caller. The values may be accessed using the [column access functions].
; sqlite3_step() is called again to retrieve the next row of data.
;
; ^[SQLITE_ERROR] means that a run-time error (such as a constraint
; violation) has occurred. sqlite3_step() should not be called again on
; the VM. More information may be found by calling [sqlite3_errmsg()].
; ^With the legacy interface, a more specific error code (for example,
; [SQLITE_INTERRUPT], [SQLITE_SCHEMA], [SQLITE_CORRUPT], and so forth)
; can be obtained by calling [sqlite3_reset()] on the
; [prepared statement]. ^In the "v2" interface,
; the more specific error code is returned directly by sqlite3_step().
;
; [SQLITE_MISUSE] means that the this routine was called inappropriately.
; Perhaps it was called on a [prepared statement] that has
; already been [sqlite3_finalize | finalized] or on one that had
; previously returned [SQLITE_ERROR] or [SQLITE_DONE]. Or it could
; be the case that the same database connection is being used by two or
; more threads at the same moment in time.
;
; For all versions of SQLite up to and including 3.6.23.1, a call to
; [sqlite3_reset()] was required after sqlite3_step() returned anything
; other than [SQLITE_ROW] before any subsequent invocation of
; sqlite3_step(). Failure to reset the prepared statement using
; [sqlite3_reset()] would result in an [SQLITE_MISUSE] return from
; sqlite3_step(). But after [version 3.6.23.1] ([dateof:3.6.23.1],
; sqlite3_step() began
; calling [sqlite3_reset()] automatically in this circumstance rather
; than returning [SQLITE_MISUSE]. This is not considered a compatibility
; break because any application that ever receives an SQLITE_MISUSE error
; is broken by definition. The [SQLITE_OMIT_AUTORESET] compile-time option
; can be used to restore the legacy behavior.
;
; <b>Goofy Interface Alert:</b> In the legacy interface, the sqlite3_step()
; API always returns a generic error code, [SQLITE_ERROR], following any
; error other than [SQLITE_BUSY] and [SQLITE_MISUSE]. You must call
; [sqlite3_reset()] or [sqlite3_finalize()] in order to find one of the
; specific [error codes] that better describes the error.
; We admit that this is a goofy design. The problem has been fixed
; with the "v2" interface. If you prepare all of your SQL statements
; using either [sqlite3_prepare_v2()] or [sqlite3_prepare16_v2()] instead
; of the legacy [sqlite3_prepare()] and [sqlite3_prepare16()] interfaces,
; then the more specific [error codes] are returned directly
; by sqlite3_step(). The use of the "v2" interface is recommended.
;@@ int sqlite3_step(sqlite3_stmt*);
sqlite3_step: "sqlite3_step" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
return: [integer!]
]
;- Number of columns in a result set
; METHOD: sqlite3_stmt
;
; ^The sqlite3_data_count(P) interface returns the number of columns in the
; current row of the result set of [prepared statement] P.
; ^If prepared statement P does not have results ready to return
; (via calls to the [sqlite3_column_int | sqlite3_column_*()] of
; interfaces) then sqlite3_data_count(P) returns 0.
; ^The sqlite3_data_count(P) routine also returns 0 if P is a NULL pointer.
; ^The sqlite3_data_count(P) routine returns 0 if the previous call to
; [sqlite3_step](P) returned [SQLITE_DONE]. ^The sqlite3_data_count(P)
; will return non-zero if previous call to [sqlite3_step](P) returned
; [SQLITE_ROW], except in the case of the [PRAGMA incremental_vacuum]
; where it always returns zero since each step of that multi-step
; pragma returns 0 columns of data.
;
; See also: [sqlite3_column_count()]
;@@ int sqlite3_data_count(sqlite3_stmt *pStmt);
sqlite3_data_count: "sqlite3_data_count" [
pStmt [sqlite3-stmt!] ;sqlite3_stmt *
return: [integer!]
]
;- Result Values From A Query
; KEYWORDS: {column access functions}
; METHOD: sqlite3_stmt
;
; ^These routines return information about a single column of the current
; result row of a query. ^In every case the first argument is a pointer
; to the [prepared statement] that is being evaluated (the [sqlite3_stmt*]
; that was returned from [sqlite3_prepare_v2()] or one of its variants)
; and the second argument is the index of the column for which information
; should be returned. ^The leftmost column of the result set has the index 0.
; ^The number of columns in the result can be determined using
; [sqlite3_column_count()].
;
; If the SQL statement does not currently point to a valid row, or if the
; column index is out of range, the result is undefined.
; These routines may only be called when the most recent call to
; [sqlite3_step()] has returned [SQLITE_ROW] and neither
; [sqlite3_reset()] nor [sqlite3_finalize()] have been called subsequently.
; If any of these routines are called after [sqlite3_reset()] or
; [sqlite3_finalize()] or after [sqlite3_step()] has returned
; something other than [SQLITE_ROW], the results are undefined.
; If [sqlite3_step()] or [sqlite3_reset()] or [sqlite3_finalize()]
; are called from a different thread while any of these routines
; are pending, then the results are undefined.
;
; ^The sqlite3_column_type() routine returns the
; [SQLITE_INTEGER | datatype code] for the initial data type
; of the result column. ^The returned value is one of [SQLITE_INTEGER],
; [SQLITE_FLOAT], [SQLITE_TEXT], [SQLITE_BLOB], or [SQLITE_NULL]. The value
; returned by sqlite3_column_type() is only meaningful if no type
; conversions have occurred as described below. After a type conversion,
; the value returned by sqlite3_column_type() is undefined. Future
; versions of SQLite may change the behavior of sqlite3_column_type()
; following a type conversion.
;
; ^If the result is a BLOB or UTF-8 string then the sqlite3_column_bytes()
; routine returns the number of bytes in that BLOB or string.
; ^If the result is a UTF-16 string, then sqlite3_column_bytes() converts
; the string to UTF-8 and then returns the number of bytes.
; ^If the result is a numeric value then sqlite3_column_bytes() uses
; [sqlite3_snprintf()] to convert that value to a UTF-8 string and returns
; the number of bytes in that string.
; ^If the result is NULL, then sqlite3_column_bytes() returns zero.
;
; ^If the result is a BLOB or UTF-16 string then the sqlite3_column_bytes16()
; routine returns the number of bytes in that BLOB or string.
; ^If the result is a UTF-8 string, then sqlite3_column_bytes16() converts
; the string to UTF-16 and then returns the number of bytes.
; ^If the result is a numeric value then sqlite3_column_bytes16() uses
; [sqlite3_snprintf()] to convert that value to a UTF-16 string and returns
; the number of bytes in that string.
; ^If the result is NULL, then sqlite3_column_bytes16() returns zero.
;
; ^The values returned by [sqlite3_column_bytes()] and
; [sqlite3_column_bytes16()] do not include the zero terminators at the end
; of the string. ^For clarity: the values returned by
; [sqlite3_column_bytes()] and [sqlite3_column_bytes16()] are the number of
; bytes in the string, not the number of characters.
;
; ^Strings returned by sqlite3_column_text() and sqlite3_column_text16(),
; even empty strings, are always zero-terminated. ^The return
; value from sqlite3_column_blob() for a zero-length BLOB is a NULL pointer.
;
; <b>Warning:</b> ^The object returned by [sqlite3_column_value()] is an
; [unprotected sqlite3_value] object. In a multithreaded environment,
; an unprotected sqlite3_value object may only be used safely with
; [sqlite3_bind_value()] and [sqlite3_result_value()].
; If the [unprotected sqlite3_value] object returned by
; [sqlite3_column_value()] is used in any other way, including calls
; to routines like [sqlite3_value_int()], [sqlite3_value_text()],
; or [sqlite3_value_bytes()], the behavior is not threadsafe.
;
; These routines attempt to convert the value where appropriate. ^For
; example, if the internal representation is FLOAT and a text result
; is requested, [sqlite3_snprintf()] is used internally to perform the
; conversion automatically. ^(The following table details the conversions
; that are applied:
;
; <blockquote>
; <table border="1">
; <tr><th> Internal<br>Type <th> Requested<br>Type <th> Conversion
;
; <tr><td> NULL <td> INTEGER <td> Result is 0
; <tr><td> NULL <td> FLOAT <td> Result is 0.0
; <tr><td> NULL <td> TEXT <td> Result is a NULL pointer
; <tr><td> NULL <td> BLOB <td> Result is a NULL pointer
; <tr><td> INTEGER <td> FLOAT <td> Convert from integer to float
; <tr><td> INTEGER <td> TEXT <td> ASCII rendering of the integer
; <tr><td> INTEGER <td> BLOB <td> Same as INTEGER->TEXT
; <tr><td> FLOAT <td> INTEGER <td> [CAST] to INTEGER
; <tr><td> FLOAT <td> TEXT <td> ASCII rendering of the float
; <tr><td> FLOAT <td> BLOB <td> [CAST] to BLOB
; <tr><td> TEXT <td> INTEGER <td> [CAST] to INTEGER
; <tr><td> TEXT <td> FLOAT <td> [CAST] to REAL
; <tr><td> TEXT <td> BLOB <td> No change
; <tr><td> BLOB <td> INTEGER <td> [CAST] to INTEGER
; <tr><td> BLOB <td> FLOAT <td> [CAST] to REAL
; <tr><td> BLOB <td> TEXT <td> Add a zero terminator if needed
; </table>
; </blockquote>)^
;
; Note that when type conversions occur, pointers returned by prior
; calls to sqlite3_column_blob(), sqlite3_column_text(), and/or
; sqlite3_column_text16() may be invalidated.
; Type conversions and pointer invalidations might occur
; in the following cases:
;
; <ul>
; <li> The initial content is a BLOB and sqlite3_column_text() or
; sqlite3_column_text16() is called. A zero-terminator might
; need to be added to the string.</li>
; <li> The initial content is UTF-8 text and sqlite3_column_bytes16() or
; sqlite3_column_text16() is called. The content must be converted
; to UTF-16.</li>
; <li> The initial content is UTF-16 text and sqlite3_column_bytes() or
; sqlite3_column_text() is called. The content must be converted
; to UTF-8.</li>
; </ul>
;
; ^Conversions between UTF-16be and UTF-16le are always done in place and do
; not invalidate a prior pointer, though of course the content of the buffer
; that the prior pointer references will have been modified. Other kinds
; of conversion are done in place when it is possible, but sometimes they
; are not possible and in those cases prior pointers are invalidated.
;
; The safest policy is to invoke these routines
; in one of the following ways:
;
; <ul>
; <li>sqlite3_column_text() followed by sqlite3_column_bytes()</li>
; <li>sqlite3_column_blob() followed by sqlite3_column_bytes()</li>
; <li>sqlite3_column_text16() followed by sqlite3_column_bytes16()</li>
; </ul>
;
; In other words, you should call sqlite3_column_text(),
; sqlite3_column_blob(), or sqlite3_column_text16() first to force the result
; into the desired format, then invoke sqlite3_column_bytes() or
; sqlite3_column_bytes16() to find the size of the result. Do not mix calls
; to sqlite3_column_text() or sqlite3_column_blob() with calls to
; sqlite3_column_bytes16(), and do not mix calls to sqlite3_column_text16()
; with calls to sqlite3_column_bytes().
;
; ^The pointers returned are valid until a type conversion occurs as
; described above, or until [sqlite3_step()] or [sqlite3_reset()] or
; [sqlite3_finalize()] is called. ^The memory space used to hold strings
; and BLOBs is freed automatically. Do <em>not</em> pass the pointers returned
; from [sqlite3_column_blob()], [sqlite3_column_text()], etc. into
; [sqlite3_free()].
;
; ^(If a memory allocation error occurs during the evaluation of any
; of these routines, a default value is returned. The default value
; is either the integer 0, the floating point number 0.0, or a NULL
; pointer. Subsequent calls to [sqlite3_errcode()] will return
; [SQLITE_NOMEM].)^
;@@ const void * sqlite3_column_blob(sqlite3_stmt*, int iCol);
sqlite3_column_blob: "sqlite3_column_blob" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [byte-ptr!]
]
;@@ int sqlite3_column_bytes(sqlite3_stmt*, int iCol);
sqlite3_column_bytes: "sqlite3_column_bytes" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_column_bytes16(sqlite3_stmt*, int iCol);
sqlite3_column_bytes16: "sqlite3_column_bytes16" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [integer!]
]
;@@ double sqlite3_column_double(sqlite3_stmt*, int iCol);
sqlite3_column_double: "sqlite3_column_double" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [float!]
]
;@@ int sqlite3_column_int(sqlite3_stmt*, int iCol);
sqlite3_column_int: "sqlite3_column_int" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [integer!]
]
;@@ sqlite3_int64 sqlite3_column_int64(sqlite3_stmt*, int iCol);
sqlite3_column_int64: "sqlite3_column_int64" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [long-long!]
]
;@@ const unsigned char * sqlite3_column_text(sqlite3_stmt*, int iCol);
sqlite3_column_text: "sqlite3_column_text" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [c-string!]
]
;@@ const void * sqlite3_column_text16(sqlite3_stmt*, int iCol);
sqlite3_column_text16: "sqlite3_column_text16" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [byte-ptr!]
]
;@@ int sqlite3_column_type(sqlite3_stmt*, int iCol);
sqlite3_column_type: "sqlite3_column_type" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [integer!]
]
;@@ sqlite3_value * sqlite3_column_value(sqlite3_stmt*, int iCol);
sqlite3_column_value: "sqlite3_column_value" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
iCol [integer!] ;int
return: [sqlite3-value!]
]
;- Destroy A Prepared Statement Object
; DESTRUCTOR: sqlite3_stmt
;
; ^The sqlite3_finalize() function is called to delete a [prepared statement].
; ^If the most recent evaluation of the statement encountered no errors
; or if the statement is never been evaluated, then sqlite3_finalize() returns
; SQLITE_OK. ^If the most recent evaluation of statement S failed, then
; sqlite3_finalize(S) returns the appropriate [error code] or
; [extended error code].
;
; ^The sqlite3_finalize(S) routine can be called at any point during
; the life cycle of [prepared statement] S:
; before statement S is ever evaluated, after
; one or more calls to [sqlite3_reset()], or after any call
; to [sqlite3_step()] regardless of whether or not the statement has
; completed execution.
;
; ^Invoking sqlite3_finalize() on a NULL pointer is a harmless no-op.
;
; The application must finalize every [prepared statement] in order to avoid
; resource leaks. It is a grievous error for the application to try to use
; a prepared statement after it has been finalized. Any use of a prepared
; statement after it has been finalized can result in undefined and
; undesirable behavior such as segfaults and heap corruption.
;@@ int sqlite3_finalize(sqlite3_stmt *pStmt);
sqlite3_finalize: "sqlite3_finalize" [
pStmt [sqlite3-stmt!] ;sqlite3_stmt *
return: [integer!]
]
;- Reset A Prepared Statement Object
; METHOD: sqlite3_stmt
;
; The sqlite3_reset() function is called to reset a [prepared statement]
; object back to its initial state, ready to be re-executed.
; ^Any SQL statement variables that had values bound to them using
; the [sqlite3_bind_blob | sqlite3_bind_*() API] retain their values.
; Use [sqlite3_clear_bindings()] to reset the bindings.
;
; ^The [sqlite3_reset(S)] interface resets the [prepared statement] S
; back to the beginning of its program.
;
; ^If the most recent call to [sqlite3_step(S)] for the
; [prepared statement] S returned [SQLITE_ROW] or [SQLITE_DONE],
; or if [sqlite3_step(S)] has never before been called on S,
; then [sqlite3_reset(S)] returns [SQLITE_OK].
;
; ^If the most recent call to [sqlite3_step(S)] for the
; [prepared statement] S indicated an error, then
; [sqlite3_reset(S)] returns an appropriate [error code].
;
; ^The [sqlite3_reset(S)] interface does not change the values
; of any [sqlite3_bind_blob|bindings] on the [prepared statement] S.
;@@ int sqlite3_reset(sqlite3_stmt *pStmt);
sqlite3_reset: "sqlite3_reset" [
pStmt [sqlite3-stmt!] ;sqlite3_stmt *
return: [integer!]
]
;- Create Or Redefine SQL Functions
; KEYWORDS: {function creation routines}
; KEYWORDS: {application-defined SQL function}
; KEYWORDS: {application-defined SQL functions}
; METHOD: sqlite3
;
; ^These functions (collectively known as "function creation routines")
; are used to add SQL functions or aggregates or to redefine the behavior
; of existing SQL functions or aggregates. The only differences between
; these routines are the text encoding expected for
; the second parameter (the name of the function being created)
; and the presence or absence of a destructor callback for
; the application data pointer.
;
; ^The first parameter is the [database connection] to which the SQL
; function is to be added. ^If an application uses more than one database
; connection then application-defined SQL functions must be added
; to each database connection separately.
;
; ^The second parameter is the name of the SQL function to be created or
; redefined. ^The length of the name is limited to 255 bytes in a UTF-8
; representation, exclusive of the zero-terminator. ^Note that the name
; length limit is in UTF-8 bytes, not characters nor UTF-16 bytes.
; ^Any attempt to create a function with a longer name
; will result in [SQLITE_MISUSE] being returned.
;
; ^The third parameter (nArg)
; is the number of arguments that the SQL function or
; aggregate takes. ^If this parameter is -1, then the SQL function or
; aggregate may take any number of arguments between 0 and the limit
; set by [sqlite3_limit]([SQLITE_LIMIT_FUNCTION_ARG]). If the third
; parameter is less than -1 or greater than 127 then the behavior is
; undefined.
;
; ^The fourth parameter, eTextRep, specifies what
; [SQLITE_UTF8 | text encoding] this SQL function prefers for
; its parameters. The application should set this parameter to
; [SQLITE_UTF16LE] if the function implementation invokes
; [sqlite3_value_text16le()] on an input, or [SQLITE_UTF16BE] if the
; implementation invokes [sqlite3_value_text16be()] on an input, or
; [SQLITE_UTF16] if [sqlite3_value_text16()] is used, or [SQLITE_UTF8]
; otherwise. ^The same SQL function may be registered multiple times using
; different preferred text encodings, with different implementations for
; each encoding.
; ^When multiple implementations of the same function are available, SQLite
; will pick the one that involves the least amount of data conversion.
;
; ^The fourth parameter may optionally be ORed with [SQLITE_DETERMINISTIC]
; to signal that the function will always return the same result given
; the same inputs within a single SQL statement. Most SQL functions are
; deterministic. The built-in [random()] SQL function is an example of a
; function that is not deterministic. The SQLite query planner is able to
; perform additional optimizations on deterministic functions, so use
; of the [SQLITE_DETERMINISTIC] flag is recommended where possible.
;
; ^(The fifth parameter is an arbitrary pointer. The implementation of the
; function can gain access to this pointer using [sqlite3_user_data()].)^
;
; ^The sixth, seventh and eighth parameters, xFunc, xStep and xFinal, are
; pointers to C-language functions that implement the SQL function or
; aggregate. ^A scalar SQL function requires an implementation of the xFunc
; callback only; NULL pointers must be passed as the xStep and xFinal
; parameters. ^An aggregate SQL function requires an implementation of xStep
; and xFinal and NULL pointer must be passed for xFunc. ^To delete an existing
; SQL function or aggregate, pass NULL pointers for all three function
; callbacks.
;
; ^(If the ninth parameter to sqlite3_create_function_v2() is not NULL,
; then it is destructor for the application data pointer.
; The destructor is invoked when the function is deleted, either by being
; overloaded or when the database connection closes.)^
; ^The destructor is also invoked if the call to
; sqlite3_create_function_v2() fails.
; ^When the destructor callback of the tenth parameter is invoked, it
; is passed a single argument which is a copy of the application data
; pointer which was the fifth parameter to sqlite3_create_function_v2().
;
; ^It is permitted to register multiple implementations of the same
; functions with the same name but with either differing numbers of
; arguments or differing preferred text encodings. ^SQLite will use
; the implementation that most closely matches the way in which the
; SQL function is used. ^A function implementation with a non-negative
; nArg parameter is a better match than a function implementation with
; a negative nArg. ^A function where the preferred text encoding
; matches the database encoding is a better
; match than a function where the encoding is different.
; ^A function where the encoding difference is between UTF16le and UTF16be
; is a closer match than a function where the encoding difference is
; between UTF8 and UTF16.
;
; ^Built-in functions may be overloaded by new application-defined functions.
;
; ^An application-defined function is permitted to call other
; SQLite interfaces. However, such calls must not
; close the database connection nor finalize or reset the prepared
; statement in which the function is running.
;@@ int sqlite3_create_function(
;@@ sqlite3 *db,
;@@ const char *zFunctionName,
;@@ int nArg,
;@@ int eTextRep,
;@@ void *pApp,
;@@ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
;@@ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
;@@ void (*xFinal)(sqlite3_context*)
;@@);
sqlite3_create_function: "sqlite3_create_function" [
db [sqlite3!] ;sqlite3 *
zFunctionName [c-string!] ;const char *
nArg [integer!] ;int
eTextRep [integer!] ;int
pApp [int-ptr!] ;void *
xFunc [function! [
arg1 [sqlite3-context!]
arg2 [integer!]
arg3 [sqlite3-value-ref!]
]]
xStep [function! [
arg1 [sqlite3-context!]
arg2 [integer!]
arg3 [sqlite3-value-ref!]
]]
xFinal [function! [
arg1 [sqlite3-context!]
]]
return: [integer!]
]
;@@ int sqlite3_create_function16(
;@@ sqlite3 *db,
;@@ const void *zFunctionName,
;@@ int nArg,
;@@ int eTextRep,
;@@ void *pApp,
;@@ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
;@@ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
;@@ void (*xFinal)(sqlite3_context*)
;@@);
sqlite3_create_function16: "sqlite3_create_function16" [
db [sqlite3!] ;sqlite3 *
zFunctionName [byte-ptr!] ;const void *
nArg [integer!] ;int
eTextRep [integer!] ;int
pApp [int-ptr!] ;void *
xFunc [function! [
arg1 [sqlite3-context!]
arg2 [integer!]
arg3 [sqlite3-value-ref!]
]]
xStep [function! [
arg1 [sqlite3-context!]
arg2 [integer!]
arg3 [sqlite3-value-ref!]
]]
xFinal [function! [
arg1 [sqlite3-context!]
]]
return: [integer!]
]
;@@ int sqlite3_create_function_v2(
;@@ sqlite3 *db,
;@@ const char *zFunctionName,
;@@ int nArg,
;@@ int eTextRep,
;@@ void *pApp,
;@@ void (*xFunc)(sqlite3_context*,int,sqlite3_value**),
;@@ void (*xStep)(sqlite3_context*,int,sqlite3_value**),
;@@ void (*xFinal)(sqlite3_context*),
;@@ void(*xDestroy)(void*)
;@@);
sqlite3_create_function_v2: "sqlite3_create_function_v2" [
db [sqlite3!] ;sqlite3 *
zFunctionName [c-string!] ;const char *
nArg [integer!] ;int
eTextRep [integer!] ;int
pApp [int-ptr!] ;void *
xFunc [function! [
arg1 [sqlite3-context!]
arg2 [integer!]
arg3 [sqlite3-value-ref!]
]]
xStep [function! [
arg1 [sqlite3-context!]
arg2 [integer!]
arg3 [sqlite3-value-ref!]
]]
xFinal [function! [
arg1 [sqlite3-context!]
]]
xDestroy [function! [
arg1 [int-ptr!]
]]
return: [integer!]
]
;- Deprecated Functions
; DEPRECATED
;
; These functions are [deprecated]. In order to maintain
; backwards compatibility with older code, these functions continue
; to be supported. However, new applications should avoid
; the use of these functions. To encourage programmers to avoid
; these functions, we will not explain what they do.
;@@ int sqlite3_aggregate_count(sqlite3_context*);
sqlite3_aggregate_count: "sqlite3_aggregate_count" [
arg1 [sqlite3-context!] ;sqlite3_context*
return: [integer!]
]
;@@ int sqlite3_expired(sqlite3_stmt*);
sqlite3_expired: "sqlite3_expired" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
return: [integer!]
]
;@@ int sqlite3_transfer_bindings(sqlite3_stmt*, sqlite3_stmt*);
sqlite3_transfer_bindings: "sqlite3_transfer_bindings" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
arg2 [sqlite3-stmt!] ;sqlite3_stmt*
return: [integer!]
]
;@@ int sqlite3_global_recover(void);
sqlite3_global_recover: "sqlite3_global_recover" [
return: [integer!]
]
;@@ void sqlite3_thread_cleanup(void);
sqlite3_thread_cleanup: "sqlite3_thread_cleanup" [
]
;@@ int sqlite3_memory_alarm(void(*)(void*,sqlite3_int64,int),
;@@ void*,sqlite3_int64);
sqlite3_memory_alarm: "sqlite3_memory_alarm" [
arg1 [function! [
arg1 [int-ptr!]
arg2 [long-long!]
arg3 [integer!]
]]
arg2 [int-ptr!] ;void*
arg3 [long-long!] ;sqlite3_int64
return: [integer!]
]
;- Obtaining SQL Values
; METHOD: sqlite3_value
;
; The C-language implementation of SQL functions and aggregates uses
; this set of interface routines to access the parameter values on
; the function or aggregate.
;
; The xFunc (for scalar functions) or xStep (for aggregates) parameters
; to [sqlite3_create_function()] and [sqlite3_create_function16()]
; define callbacks that implement the SQL functions and aggregates.
; The 3rd parameter to these callbacks is an array of pointers to
; [protected sqlite3_value] objects. There is one [sqlite3_value] object for
; each parameter to the SQL function. These routines are used to
; extract values from the [sqlite3_value] objects.
;
; These routines work only with [protected sqlite3_value] objects.
; Any attempt to use these routines on an [unprotected sqlite3_value]
; object results in undefined behavior.
;
; ^These routines work just like the corresponding [column access functions]
; except that these routines take a single [protected sqlite3_value] object
; pointer instead of a [sqlite3_stmt*] pointer and an integer column number.
;
; ^The sqlite3_value_text16() interface extracts a UTF-16 string
; in the native byte-order of the host machine. ^The
; sqlite3_value_text16be() and sqlite3_value_text16le() interfaces
; extract UTF-16 strings as big-endian and little-endian respectively.
;
; ^(The sqlite3_value_numeric_type() interface attempts to apply
; numeric affinity to the value. This means that an attempt is
; made to convert the value to an integer or floating point. If
; such a conversion is possible without loss of information (in other
; words, if the value is a string that looks like a number)
; then the conversion is performed. Otherwise no conversion occurs.
; The [SQLITE_INTEGER | datatype] after conversion is returned.)^
;
; Please pay particular attention to the fact that the pointer returned
; from [sqlite3_value_blob()], [sqlite3_value_text()], or
; [sqlite3_value_text16()] can be invalidated by a subsequent call to
; [sqlite3_value_bytes()], [sqlite3_value_bytes16()], [sqlite3_value_text()],
; or [sqlite3_value_text16()].
;
; These routines must be called from the same thread as
; the SQL function that supplied the [sqlite3_value*] parameters.
;@@ const void * sqlite3_value_blob(sqlite3_value*);
sqlite3_value_blob: "sqlite3_value_blob" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [byte-ptr!]
]
;@@ int sqlite3_value_bytes(sqlite3_value*);
sqlite3_value_bytes: "sqlite3_value_bytes" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [integer!]
]
;@@ int sqlite3_value_bytes16(sqlite3_value*);
sqlite3_value_bytes16: "sqlite3_value_bytes16" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [integer!]
]
;@@ double sqlite3_value_double(sqlite3_value*);
sqlite3_value_double: "sqlite3_value_double" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [float!]
]
;@@ int sqlite3_value_int(sqlite3_value*);
sqlite3_value_int: "sqlite3_value_int" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [integer!]
]
;@@ sqlite3_int64 sqlite3_value_int64(sqlite3_value*);
sqlite3_value_int64: "sqlite3_value_int64" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [long-long!]
]
;@@ const unsigned char * sqlite3_value_text(sqlite3_value*);
sqlite3_value_text: "sqlite3_value_text" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [c-string!]
]
;@@ const void * sqlite3_value_text16(sqlite3_value*);
sqlite3_value_text16: "sqlite3_value_text16" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [byte-ptr!]
]
;@@ const void * sqlite3_value_text16le(sqlite3_value*);
sqlite3_value_text16le: "sqlite3_value_text16le" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [byte-ptr!]
]
;@@ const void * sqlite3_value_text16be(sqlite3_value*);
sqlite3_value_text16be: "sqlite3_value_text16be" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [byte-ptr!]
]
;@@ int sqlite3_value_type(sqlite3_value*);
sqlite3_value_type: "sqlite3_value_type" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [integer!]
]
;@@ int sqlite3_value_numeric_type(sqlite3_value*);
sqlite3_value_numeric_type: "sqlite3_value_numeric_type" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [integer!]
]
;- Finding The Subtype Of SQL Values
; METHOD: sqlite3_value
;
; The sqlite3_value_subtype(V) function returns the subtype for
; an [application-defined SQL function] argument V. The subtype
; information can be used to pass a limited amount of context from
; one SQL function to another. Use the [sqlite3_result_subtype()]
; routine to set the subtype for the return value of an SQL function.
;
; SQLite makes no use of subtype itself. It merely passes the subtype
; from the result of one [application-defined SQL function] into the
; input of another.
;@@ unsigned int sqlite3_value_subtype(sqlite3_value*);
sqlite3_value_subtype: "sqlite3_value_subtype" [
arg1 [sqlite3-value!] ;sqlite3_value*
return: [integer!]
]
;- Copy And Free SQL Values
; METHOD: sqlite3_value
;
; ^The sqlite3_value_dup(V) interface makes a copy of the [sqlite3_value]
; object D and returns a pointer to that copy. ^The [sqlite3_value] returned
; is a [protected sqlite3_value] object even if the input is not.
; ^The sqlite3_value_dup(V) interface returns NULL if V is NULL or if a
; memory allocation fails.
;
; ^The sqlite3_value_free(V) interface frees an [sqlite3_value] object
; previously obtained from [sqlite3_value_dup()]. ^If V is a NULL pointer
; then sqlite3_value_free(V) is a harmless no-op.
;@@ sqlite3_value * sqlite3_value_dup(const sqlite3_value*);
sqlite3_value_dup: "sqlite3_value_dup" [
arg1 [sqlite3-value!] ;const sqlite3_value*
return: [sqlite3-value!]
]
;@@ void sqlite3_value_free(sqlite3_value*);
sqlite3_value_free: "sqlite3_value_free" [
arg1 [sqlite3-value!] ;sqlite3_value*
]
;- Obtain Aggregate Function Context
; METHOD: sqlite3_context
;
; Implementations of aggregate SQL functions use this
; routine to allocate memory for storing their state.
;
; ^The first time the sqlite3_aggregate_context(C,N) routine is called
; for a particular aggregate function, SQLite
; allocates N of memory, zeroes out that memory, and returns a pointer
; to the new memory. ^On second and subsequent calls to
; sqlite3_aggregate_context() for the same aggregate function instance,
; the same buffer is returned. Sqlite3_aggregate_context() is normally
; called once for each invocation of the xStep callback and then one
; last time when the xFinal callback is invoked. ^(When no rows match
; an aggregate query, the xStep() callback of the aggregate function
; implementation is never called and xFinal() is called exactly once.
; In those cases, sqlite3_aggregate_context() might be called for the
; first time from within xFinal().)^
;
; ^The sqlite3_aggregate_context(C,N) routine returns a NULL pointer
; when first called if N is less than or equal to zero or if a memory
; allocate error occurs.
;
; ^(The amount of space allocated by sqlite3_aggregate_context(C,N) is
; determined by the N parameter on first successful call. Changing the
; value of N in subsequent call to sqlite3_aggregate_context() within
; the same aggregate function instance will not resize the memory
; allocation.)^ Within the xFinal callback, it is customary to set
; N=0 in calls to sqlite3_aggregate_context(C,N) so that no
; pointless memory allocations occur.
;
; ^SQLite automatically frees the memory allocated by
; sqlite3_aggregate_context() when the aggregate query concludes.
;
; The first parameter must be a copy of the
; [sqlite3_context | SQL function context] that is the first parameter
; to the xStep or xFinal callback routine that implements the aggregate
; function.
;
; This routine must be called from the same thread in which
; the aggregate SQL function is running.
;@@ void * sqlite3_aggregate_context(sqlite3_context*, int nBytes);
sqlite3_aggregate_context: "sqlite3_aggregate_context" [
arg1 [sqlite3-context!] ;sqlite3_context*
nBytes [integer!] ;int
return: [int-ptr!]
]
;- User Data For Functions
; METHOD: sqlite3_context
;
; ^The sqlite3_user_data() interface returns a copy of
; the pointer that was the pUserData parameter (the 5th parameter)
; of the [sqlite3_create_function()]
; and [sqlite3_create_function16()] routines that originally
; registered the application defined function.
;
; This routine must be called from the same thread in which
; the application-defined function is running.
;@@ void * sqlite3_user_data(sqlite3_context*);
sqlite3_user_data: "sqlite3_user_data" [
arg1 [sqlite3-context!] ;sqlite3_context*
return: [int-ptr!]
]
;- Database Connection For Functions
; METHOD: sqlite3_context
;
; ^The sqlite3_context_db_handle() interface returns a copy of
; the pointer to the [database connection] (the 1st parameter)
; of the [sqlite3_create_function()]
; and [sqlite3_create_function16()] routines that originally
; registered the application defined function.
;@@ sqlite3 * sqlite3_context_db_handle(sqlite3_context*);
sqlite3_context_db_handle: "sqlite3_context_db_handle" [
arg1 [sqlite3-context!] ;sqlite3_context*
return: [sqlite3!]
]
;- Function Auxiliary Data
; METHOD: sqlite3_context
;
; These functions may be used by (non-aggregate) SQL functions to
; associate metadata with argument values. If the same value is passed to
; multiple invocations of the same SQL function during query execution, under
; some circumstances the associated metadata may be preserved. An example
; of where this might be useful is in a regular-expression matching
; function. The compiled version of the regular expression can be stored as
; metadata associated with the pattern string.
; Then as long as the pattern string remains the same,
; the compiled regular expression can be reused on multiple
; invocations of the same function.
;
; ^The sqlite3_get_auxdata() interface returns a pointer to the metadata
; associated by the sqlite3_set_auxdata() function with the Nth argument
; value to the application-defined function. ^If there is no metadata
; associated with the function argument, this sqlite3_get_auxdata() interface
; returns a NULL pointer.
;
; ^The sqlite3_set_auxdata(C,N,P,X) interface saves P as metadata for the N-th
; argument of the application-defined function. ^Subsequent
; calls to sqlite3_get_auxdata(C,N) return P from the most recent
; sqlite3_set_auxdata(C,N,P,X) call if the metadata is still valid or
; NULL if the metadata has been discarded.
; ^After each call to sqlite3_set_auxdata(C,N,P,X) where X is not NULL,
; SQLite will invoke the destructor function X with parameter P exactly
; once, when the metadata is discarded.
; SQLite is free to discard the metadata at any time, including: <ul>
; <li> ^(when the corresponding function parameter changes)^, or
; <li> ^(when [sqlite3_reset()] or [sqlite3_finalize()] is called for the
; SQL statement)^, or
; <li> ^(when sqlite3_set_auxdata() is invoked again on the same
; parameter)^, or
; <li> ^(during the original sqlite3_set_auxdata() call when a memory
; allocation error occurs.)^ </ul>
;
; Note the last bullet in particular. The destructor X in
; sqlite3_set_auxdata(C,N,P,X) might be called immediately, before the
; sqlite3_set_auxdata() interface even returns. Hence sqlite3_set_auxdata()
; should be called near the end of the function implementation and the
; function implementation should not make any use of P after
; sqlite3_set_auxdata() has been called.
;
; ^(In practice, metadata is preserved between function calls for
; function parameters that are compile-time constants, including literal
; values and [parameters] and expressions composed from the same.)^
;
; These routines must be called from the same thread in which
; the SQL function is running.
;@@ void * sqlite3_get_auxdata(sqlite3_context*, int N);
sqlite3_get_auxdata: "sqlite3_get_auxdata" [
arg1 [sqlite3-context!] ;sqlite3_context*
N [integer!] ;int
return: [int-ptr!]
]
;@@ void sqlite3_set_auxdata(sqlite3_context*, int N, void*, void (*)(void*));
sqlite3_set_auxdata: "sqlite3_set_auxdata" [
arg1 [sqlite3-context!] ;sqlite3_context*
N [integer!] ;int
arg3 [int-ptr!] ;void*
]
;- Setting The Result Of An SQL Function
; METHOD: sqlite3_context
;
; These routines are used by the xFunc or xFinal callbacks that
; implement SQL functions and aggregates. See
; [sqlite3_create_function()] and [sqlite3_create_function16()]
; for additional information.
;
; These functions work very much like the [parameter binding] family of
; functions used to bind values to host parameters in prepared statements.
; Refer to the [SQL parameter] documentation for additional information.
;
; ^The sqlite3_result_blob() interface sets the result from
; an application-defined function to be the BLOB whose content is pointed
; to by the second parameter and which is N bytes long where N is the
; third parameter.
;
; ^The sqlite3_result_zeroblob(C,N) and sqlite3_result_zeroblob64(C,N)
; interfaces set the result of the application-defined function to be
; a BLOB containing all zero bytes and N bytes in size.
;
; ^The sqlite3_result_double() interface sets the result from
; an application-defined function to be a floating point value specified
; by its 2nd argument.
;
; ^The sqlite3_result_error() and sqlite3_result_error16() functions
; cause the implemented SQL function to throw an exception.
; ^SQLite uses the string pointed to by the
; 2nd parameter of sqlite3_result_error() or sqlite3_result_error16()
; as the text of an error message. ^SQLite interprets the error
; message string from sqlite3_result_error() as UTF-8. ^SQLite
; interprets the string from sqlite3_result_error16() as UTF-16 in native
; byte order. ^If the third parameter to sqlite3_result_error()
; or sqlite3_result_error16() is negative then SQLite takes as the error
; message all text up through the first zero character.
; ^If the third parameter to sqlite3_result_error() or
; sqlite3_result_error16() is non-negative then SQLite takes that many
; bytes (not characters) from the 2nd parameter as the error message.
; ^The sqlite3_result_error() and sqlite3_result_error16()
; routines make a private copy of the error message text before
; they return. Hence, the calling function can deallocate or
; modify the text after they return without harm.
; ^The sqlite3_result_error_code() function changes the error code
; returned by SQLite as a result of an error in a function. ^By default,
; the error code is SQLITE_ERROR. ^A subsequent call to sqlite3_result_error()
; or sqlite3_result_error16() resets the error code to SQLITE_ERROR.
;
; ^The sqlite3_result_error_toobig() interface causes SQLite to throw an
; error indicating that a string or BLOB is too long to represent.
;
; ^The sqlite3_result_error_nomem() interface causes SQLite to throw an
; error indicating that a memory allocation failed.
;
; ^The sqlite3_result_int() interface sets the return value
; of the application-defined function to be the 32-bit signed integer
; value given in the 2nd argument.
; ^The sqlite3_result_int64() interface sets the return value
; of the application-defined function to be the 64-bit signed integer
; value given in the 2nd argument.
;
; ^The sqlite3_result_null() interface sets the return value
; of the application-defined function to be NULL.
;
; ^The sqlite3_result_text(), sqlite3_result_text16(),
; sqlite3_result_text16le(), and sqlite3_result_text16be() interfaces
; set the return value of the application-defined function to be
; a text string which is represented as UTF-8, UTF-16 native byte order,
; UTF-16 little endian, or UTF-16 big endian, respectively.
; ^The sqlite3_result_text64() interface sets the return value of an
; application-defined function to be a text string in an encoding
; specified by the fifth (and last) parameter, which must be one
; of [SQLITE_UTF8], [SQLITE_UTF16], [SQLITE_UTF16BE], or [SQLITE_UTF16LE].
; ^SQLite takes the text result from the application from
; the 2nd parameter of the sqlite3_result_text* interfaces.
; ^If the 3rd parameter to the sqlite3_result_text* interfaces
; is negative, then SQLite takes result text from the 2nd parameter
; through the first zero character.
; ^If the 3rd parameter to the sqlite3_result_text* interfaces
; is non-negative, then as many bytes (not characters) of the text
; pointed to by the 2nd parameter are taken as the application-defined
; function result. If the 3rd parameter is non-negative, then it
; must be the byte offset into the string where the NUL terminator would
; appear if the string where NUL terminated. If any NUL characters occur
; in the string at a byte offset that is less than the value of the 3rd
; parameter, then the resulting string will contain embedded NULs and the
; result of expressions operating on strings with embedded NULs is undefined.
; ^If the 4th parameter to the sqlite3_result_text* interfaces
; or sqlite3_result_blob is a non-NULL pointer, then SQLite calls that
; function as the destructor on the text or BLOB result when it has
; finished using that result.
; ^If the 4th parameter to the sqlite3_result_text* interfaces or to
; sqlite3_result_blob is the special constant SQLITE_STATIC, then SQLite
; assumes that the text or BLOB result is in constant space and does not
; copy the content of the parameter nor call a destructor on the content
; when it has finished using that result.
; ^If the 4th parameter to the sqlite3_result_text* interfaces
; or sqlite3_result_blob is the special constant SQLITE_TRANSIENT
; then SQLite makes a copy of the result into space obtained from
; from [sqlite3_malloc()] before it returns.
;
; ^The sqlite3_result_value() interface sets the result of
; the application-defined function to be a copy of the
; [unprotected sqlite3_value] object specified by the 2nd parameter. ^The
; sqlite3_result_value() interface makes a copy of the [sqlite3_value]
; so that the [sqlite3_value] specified in the parameter may change or
; be deallocated after sqlite3_result_value() returns without harm.
; ^A [protected sqlite3_value] object may always be used where an
; [unprotected sqlite3_value] object is required, so either
; kind of [sqlite3_value] object can be used with this interface.
;
; If these routines are called from within the different thread
; than the one containing the application-defined function that received
; the [sqlite3_context] pointer, the results are undefined.
;@@ void sqlite3_result_blob(sqlite3_context*, const void*, int, void(*)(void*));
sqlite3_result_blob: "sqlite3_result_blob" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [byte-ptr!] ;const void*
arg3 [integer!] ;int
]
;@@ void sqlite3_result_blob64(sqlite3_context*,const void*,
;@@ sqlite3_uint64,void(*)(void*));
sqlite3_result_blob64: "sqlite3_result_blob64" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [byte-ptr!] ;const void*
arg3 [long-long!] ;sqlite3_uint64
]
;@@ void sqlite3_result_double(sqlite3_context*, double);
sqlite3_result_double: "sqlite3_result_double" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [float!] ;double
]
;@@ void sqlite3_result_error(sqlite3_context*, const char*, int);
sqlite3_result_error: "sqlite3_result_error" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [c-string!] ;const char*
arg3 [integer!] ;int
]
;@@ void sqlite3_result_error16(sqlite3_context*, const void*, int);
sqlite3_result_error16: "sqlite3_result_error16" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [byte-ptr!] ;const void*
arg3 [integer!] ;int
]
;@@ void sqlite3_result_error_toobig(sqlite3_context*);
sqlite3_result_error_toobig: "sqlite3_result_error_toobig" [
arg1 [sqlite3-context!] ;sqlite3_context*
]
;@@ void sqlite3_result_error_nomem(sqlite3_context*);
sqlite3_result_error_nomem: "sqlite3_result_error_nomem" [
arg1 [sqlite3-context!] ;sqlite3_context*
]
;@@ void sqlite3_result_error_code(sqlite3_context*, int);
sqlite3_result_error_code: "sqlite3_result_error_code" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [integer!] ;int
]
;@@ void sqlite3_result_int(sqlite3_context*, int);
sqlite3_result_int: "sqlite3_result_int" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [integer!] ;int
]
;@@ void sqlite3_result_int64(sqlite3_context*, sqlite3_int64);
sqlite3_result_int64: "sqlite3_result_int64" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [long-long!] ;sqlite3_int64
]
;@@ void sqlite3_result_null(sqlite3_context*);
sqlite3_result_null: "sqlite3_result_null" [
arg1 [sqlite3-context!] ;sqlite3_context*
]
;@@ void sqlite3_result_text(sqlite3_context*, const char*, int, void(*)(void*));
sqlite3_result_text: "sqlite3_result_text" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [c-string!] ;const char*
arg3 [integer!] ;int
]
;@@ void sqlite3_result_text64(sqlite3_context*, const char*,sqlite3_uint64,
;@@ void(*)(void*), unsigned char encoding);
sqlite3_result_text64: "sqlite3_result_text64" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [c-string!] ;const char*
arg3 [long-long!] ;sqlite3_uint64
arg4 [function! [
arg1 [int-ptr!]
]]
encoding [byte!] ;unsigned char
]
;@@ void sqlite3_result_text16(sqlite3_context*, const void*, int, void(*)(void*));
sqlite3_result_text16: "sqlite3_result_text16" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [byte-ptr!] ;const void*
arg3 [integer!] ;int
]
;@@ void sqlite3_result_text16le(sqlite3_context*, const void*, int,void(*)(void*));
sqlite3_result_text16le: "sqlite3_result_text16le" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [byte-ptr!] ;const void*
arg3 [integer!] ;int
]
;@@ void sqlite3_result_text16be(sqlite3_context*, const void*, int,void(*)(void*));
sqlite3_result_text16be: "sqlite3_result_text16be" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [byte-ptr!] ;const void*
arg3 [integer!] ;int
]
;@@ void sqlite3_result_value(sqlite3_context*, sqlite3_value*);
sqlite3_result_value: "sqlite3_result_value" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [sqlite3-value!] ;sqlite3_value*
]
;@@ void sqlite3_result_zeroblob(sqlite3_context*, int n);
sqlite3_result_zeroblob: "sqlite3_result_zeroblob" [
arg1 [sqlite3-context!] ;sqlite3_context*
n [integer!] ;int
]
;@@ int sqlite3_result_zeroblob64(sqlite3_context*, sqlite3_uint64 n);
sqlite3_result_zeroblob64: "sqlite3_result_zeroblob64" [
arg1 [sqlite3-context!] ;sqlite3_context*
n [long-long!] ;sqlite3_uint64
return: [integer!]
]
;- Setting The Subtype Of An SQL Function
; METHOD: sqlite3_context
;
; The sqlite3_result_subtype(C,T) function causes the subtype of
; the result from the [application-defined SQL function] with
; [sqlite3_context] C to be the value T. Only the lower 8 bits
; of the subtype T are preserved in current versions of SQLite;
; higher order bits are discarded.
; The number of subtype bytes preserved by SQLite might increase
; in future releases of SQLite.
;@@ void sqlite3_result_subtype(sqlite3_context*,unsigned int);
sqlite3_result_subtype: "sqlite3_result_subtype" [
arg1 [sqlite3-context!] ;sqlite3_context*
arg2 [integer!] ;unsigned int
]
;- Define New Collating Sequences
; METHOD: sqlite3
;
; ^These functions add, remove, or modify a [collation] associated
; with the [database connection] specified as the first argument.
;
; ^The name of the collation is a UTF-8 string
; for sqlite3_create_collation() and sqlite3_create_collation_v2()
; and a UTF-16 string in native byte order for sqlite3_create_collation16().
; ^Collation names that compare equal according to [sqlite3_strnicmp()] are
; considered to be the same name.
;
; ^(The third argument (eTextRep) must be one of the constants:
; <ul>
; <li> [SQLITE_UTF8],
; <li> [SQLITE_UTF16LE],
; <li> [SQLITE_UTF16BE],
; <li> [SQLITE_UTF16], or
; <li> [SQLITE_UTF16_ALIGNED].
; </ul>)^
; ^The eTextRep argument determines the encoding of strings passed
; to the collating function callback, xCallback.
; ^The [SQLITE_UTF16] and [SQLITE_UTF16_ALIGNED] values for eTextRep
; force strings to be UTF16 with native byte order.
; ^The [SQLITE_UTF16_ALIGNED] value for eTextRep forces strings to begin
; on an even byte address.
;
; ^The fourth argument, pArg, is an application data pointer that is passed
; through as the first argument to the collating function callback.
;
; ^The fifth argument, xCallback, is a pointer to the collating function.
; ^Multiple collating functions can be registered using the same name but
; with different eTextRep parameters and SQLite will use whichever
; function requires the least amount of data transformation.
; ^If the xCallback argument is NULL then the collating function is
; deleted. ^When all collating functions having the same name are deleted,
; that collation is no longer usable.
;
; ^The collating function callback is invoked with a copy of the pArg
; application data pointer and with two strings in the encoding specified
; by the eTextRep argument. The collating function must return an
; integer that is negative, zero, or positive
; if the first string is less than, equal to, or greater than the second,
; respectively. A collating function must always return the same answer
; given the same inputs. If two or more collating functions are registered
; to the same collation name (using different eTextRep values) then all
; must give an equivalent answer when invoked with equivalent strings.
; The collating function must obey the following properties for all
; strings A, B, and C:
;
; <ol>
; <li> If A==B then B==A.
; <li> If A==B and B==C then A==C.
; <li> If A&lt;B THEN B&gt;A.
; <li> If A&lt;B and B&lt;C then A&lt;C.
; </ol>
;
; If a collating function fails any of the above constraints and that
; collating function is registered and used, then the behavior of SQLite
; is undefined.
;
; ^The sqlite3_create_collation_v2() works like sqlite3_create_collation()
; with the addition that the xDestroy callback is invoked on pArg when
; the collating function is deleted.
; ^Collating functions are deleted when they are overridden by later
; calls to the collation creation functions or when the
; [database connection] is closed using [sqlite3_close()].
;
; ^The xDestroy callback is <u>not</u> called if the
; sqlite3_create_collation_v2() function fails. Applications that invoke
; sqlite3_create_collation_v2() with a non-NULL xDestroy argument should
; check the return code and dispose of the application data pointer
; themselves rather than expecting SQLite to deal with it for them.
; This is different from every other SQLite interface. The inconsistency
; is unfortunate but cannot be changed without breaking backwards
; compatibility.
;
; See also: [sqlite3_collation_needed()] and [sqlite3_collation_needed16()].
;@@ int sqlite3_create_collation(
;@@ sqlite3*,
;@@ const char *zName,
;@@ int eTextRep,
;@@ void *pArg,
;@@ int(*xCompare)(void*,int,const void*,int,const void*)
;@@);
sqlite3_create_collation: "sqlite3_create_collation" [
arg1 [sqlite3!] ;sqlite3*
zName [c-string!] ;const char *
eTextRep [integer!] ;int
pArg [int-ptr!] ;void *
xCompare [function! [
arg1 [int-ptr!]
arg2 [integer!]
arg3 [byte-ptr!]
arg4 [integer!]
arg5 [byte-ptr!]
return: [integer!]
]]
return: [integer!]
]
;@@ int sqlite3_create_collation_v2(
;@@ sqlite3*,
;@@ const char *zName,
;@@ int eTextRep,
;@@ void *pArg,
;@@ int(*xCompare)(void*,int,const void*,int,const void*),
;@@ void(*xDestroy)(void*)
;@@);
sqlite3_create_collation_v2: "sqlite3_create_collation_v2" [
arg1 [sqlite3!] ;sqlite3*
zName [c-string!] ;const char *
eTextRep [integer!] ;int
pArg [int-ptr!] ;void *
xCompare [function! [
arg1 [int-ptr!]
arg2 [integer!]
arg3 [byte-ptr!]
arg4 [integer!]
arg5 [byte-ptr!]
return: [integer!]
]]
xDestroy [function! [
arg1 [int-ptr!]
]]
return: [integer!]
]
;@@ int sqlite3_create_collation16(
;@@ sqlite3*,
;@@ const void *zName,
;@@ int eTextRep,
;@@ void *pArg,
;@@ int(*xCompare)(void*,int,const void*,int,const void*)
;@@);
sqlite3_create_collation16: "sqlite3_create_collation16" [
arg1 [sqlite3!] ;sqlite3*
zName [byte-ptr!] ;const void *
eTextRep [integer!] ;int
pArg [int-ptr!] ;void *
xCompare [function! [
arg1 [int-ptr!]
arg2 [integer!]
arg3 [byte-ptr!]
arg4 [integer!]
arg5 [byte-ptr!]
return: [integer!]
]]
return: [integer!]
]
;- Collation Needed Callbacks
; METHOD: sqlite3
;
; ^To avoid having to register all collation sequences before a database
; can be used, a single callback function may be registered with the
; [database connection] to be invoked whenever an undefined collation
; sequence is required.
;
; ^If the function is registered using the sqlite3_collation_needed() API,
; then it is passed the names of undefined collation sequences as strings
; encoded in UTF-8. ^If sqlite3_collation_needed16() is used,
; the names are passed as UTF-16 in machine native byte order.
; ^A call to either function replaces the existing collation-needed callback.
;
; ^(When the callback is invoked, the first argument passed is a copy
; of the second argument to sqlite3_collation_needed() or
; sqlite3_collation_needed16(). The second argument is the database
; connection. The third argument is one of [SQLITE_UTF8], [SQLITE_UTF16BE],
; or [SQLITE_UTF16LE], indicating the most desirable form of the collation
; sequence function required. The fourth parameter is the name of the
; required collation sequence.)^
;
; The callback function should register the desired collation using
; [sqlite3_create_collation()], [sqlite3_create_collation16()], or
; [sqlite3_create_collation_v2()].
;@@ int sqlite3_collation_needed(
;@@ sqlite3*,
;@@ void*,
;@@ void(*)(void*,sqlite3*,int eTextRep,const char*)
;@@);
sqlite3_collation_needed: "sqlite3_collation_needed" [
arg1 [sqlite3!] ;sqlite3*
arg2 [int-ptr!] ;void*
arg3 [function! [
arg1 [int-ptr!]
arg2 [sqlite3!]
eTextRep [integer!]
arg4 [c-string!]
]]
return: [integer!]
]
;@@ int sqlite3_collation_needed16(
;@@ sqlite3*,
;@@ void*,
;@@ void(*)(void*,sqlite3*,int eTextRep,const void*)
;@@);
sqlite3_collation_needed16: "sqlite3_collation_needed16" [
arg1 [sqlite3!] ;sqlite3*
arg2 [int-ptr!] ;void*
arg3 [function! [
arg1 [int-ptr!]
arg2 [sqlite3!]
eTextRep [integer!]
arg4 [byte-ptr!]
]]
return: [integer!]
]
;@@ int sqlite3_key(
;@@ sqlite3 *db, /* Database to be rekeyed */
;@@ const void *pKey, int nKey /* The key */
;@@);
sqlite3_key: "sqlite3_key" [
db [sqlite3!] ; Database to be rekeyed
pKey [byte-ptr!] ;const void *
nKey [integer!] ; The key
return: [integer!]
]
;@@ int sqlite3_key_v2(
;@@ sqlite3 *db, /* Database to be rekeyed */
;@@ const char *zDbName, /* Name of the database */
;@@ const void *pKey, int nKey /* The key */
;@@);
sqlite3_key_v2: "sqlite3_key_v2" [
db [sqlite3!] ; Database to be rekeyed
zDbName [c-string!] ; Name of the database
pKey [byte-ptr!] ;const void *
nKey [integer!] ; The key
return: [integer!]
]
;@@ int sqlite3_rekey(
;@@ sqlite3 *db, /* Database to be rekeyed */
;@@ const void *pKey, int nKey /* The new key */
;@@);
sqlite3_rekey: "sqlite3_rekey" [
db [sqlite3!] ; Database to be rekeyed
pKey [byte-ptr!] ;const void *
nKey [integer!] ; The new key
return: [integer!]
]
;@@ int sqlite3_rekey_v2(
;@@ sqlite3 *db, /* Database to be rekeyed */
;@@ const char *zDbName, /* Name of the database */
;@@ const void *pKey, int nKey /* The new key */
;@@);
sqlite3_rekey_v2: "sqlite3_rekey_v2" [
db [sqlite3!] ; Database to be rekeyed
zDbName [c-string!] ; Name of the database
pKey [byte-ptr!] ;const void *
nKey [integer!] ; The new key
return: [integer!]
]
;@@ void sqlite3_activate_see(
;@@ const char *zPassPhrase /* Activation phrase */
;@@);
sqlite3_activate_see: "sqlite3_activate_see" [
zPassPhrase [c-string!] ; Activation phrase
]
;@@ void sqlite3_activate_cerod(
;@@ const char *zPassPhrase /* Activation phrase */
;@@);
sqlite3_activate_cerod: "sqlite3_activate_cerod" [
zPassPhrase [c-string!] ; Activation phrase
]
;- Suspend Execution For A Short Time
;
; The sqlite3_sleep() function causes the current thread to suspend execution
; for at least a number of milliseconds specified in its parameter.
;
; If the operating system does not support sleep requests with
; millisecond time resolution, then the time will be rounded up to
; the nearest second. The number of milliseconds of sleep actually
; requested from the operating system is returned.
;
; ^SQLite implements this interface by calling the xSleep()
; method of the default [sqlite3_vfs] object. If the xSleep() method
; of the default VFS is not implemented correctly, or not implemented at
; all, then the behavior of sqlite3_sleep() may deviate from the description
; in the previous paragraphs.
;@@ int sqlite3_sleep(int);
sqlite3_sleep: "sqlite3_sleep" [
arg1 [integer!] ;int
return: [integer!]
]
;- Test For Auto-Commit Mode
; KEYWORDS: {autocommit mode}
; METHOD: sqlite3
;
; ^The sqlite3_get_autocommit() interface returns non-zero or
; zero if the given database connection is or is not in autocommit mode,
; respectively. ^Autocommit mode is on by default.
; ^Autocommit mode is disabled by a [BEGIN] statement.
; ^Autocommit mode is re-enabled by a [COMMIT] or [ROLLBACK].
;
; If certain kinds of errors occur on a statement within a multi-statement
; transaction (errors including [SQLITE_FULL], [SQLITE_IOERR],
; [SQLITE_NOMEM], [SQLITE_BUSY], and [SQLITE_INTERRUPT]) then the
; transaction might be rolled back automatically. The only way to
; find out whether SQLite automatically rolled back the transaction after
; an error is to use this function.
;
; If another thread changes the autocommit status of the database
; connection while this routine is running, then the return value
; is undefined.
;@@ int sqlite3_get_autocommit(sqlite3*);
sqlite3_get_autocommit: "sqlite3_get_autocommit" [
arg1 [sqlite3!] ;sqlite3*
return: [integer!]
]
;- Find The Database Handle Of A Prepared Statement
; METHOD: sqlite3_stmt
;
; ^The sqlite3_db_handle interface returns the [database connection] handle
; to which a [prepared statement] belongs. ^The [database connection]
; returned by sqlite3_db_handle is the same [database connection]
; that was the first argument
; to the [sqlite3_prepare_v2()] call (or its variants) that was used to
; create the statement in the first place.
;@@ sqlite3 * sqlite3_db_handle(sqlite3_stmt*);
sqlite3_db_handle: "sqlite3_db_handle" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
return: [sqlite3!]
]
;- Return The Filename For A Database Connection
; METHOD: sqlite3
;
; ^The sqlite3_db_filename(D,N) interface returns a pointer to a filename
; associated with database N of connection D. ^The main database file
; has the name "main". If there is no attached database N on the database
; connection D, or if database N is a temporary or in-memory database, then
; a NULL pointer is returned.
;
; ^The filename returned by this function is the output of the
; xFullPathname method of the [VFS]. ^In other words, the filename
; will be an absolute pathname, even if the filename used
; to open the database originally was a URI or relative pathname.
;@@ const char * sqlite3_db_filename(sqlite3 *db, const char *zDbName);
sqlite3_db_filename: "sqlite3_db_filename" [
db [sqlite3!] ;sqlite3 *
zDbName [c-string!] ;const char *
return: [c-string!]
]
;- Determine if a database is read-only
; METHOD: sqlite3
;
; ^The sqlite3_db_readonly(D,N) interface returns 1 if the database N
; of connection D is read-only, 0 if it is read/write, or -1 if N is not
; the name of a database on connection D.
;@@ int sqlite3_db_readonly(sqlite3 *db, const char *zDbName);
sqlite3_db_readonly: "sqlite3_db_readonly" [
db [sqlite3!] ;sqlite3 *
zDbName [c-string!] ;const char *
return: [integer!]
]
;- Find the next prepared statement
; METHOD: sqlite3
;
; ^This interface returns a pointer to the next [prepared statement] after
; pStmt associated with the [database connection] pDb. ^If pStmt is NULL
; then this interface returns a pointer to the first prepared statement
; associated with the database connection pDb. ^If no prepared statement
; satisfies the conditions of this routine, it returns NULL.
;
; The [database connection] pointer D in a call to
; [sqlite3_next_stmt(D,S)] must refer to an open database
; connection and in particular must not be a NULL pointer.
;@@ sqlite3_stmt * sqlite3_next_stmt(sqlite3 *pDb, sqlite3_stmt *pStmt);
sqlite3_next_stmt: "sqlite3_next_stmt" [
pDb [sqlite3!] ;sqlite3 *
pStmt [sqlite3-stmt!] ;sqlite3_stmt *
return: [sqlite3-stmt!]
]
;- Commit And Rollback Notification Callbacks
; METHOD: sqlite3
;
; ^The sqlite3_commit_hook() interface registers a callback
; function to be invoked whenever a transaction is [COMMIT | committed].
; ^Any callback set by a previous call to sqlite3_commit_hook()
; for the same database connection is overridden.
; ^The sqlite3_rollback_hook() interface registers a callback
; function to be invoked whenever a transaction is [ROLLBACK | rolled back].
; ^Any callback set by a previous call to sqlite3_rollback_hook()
; for the same database connection is overridden.
; ^The pArg argument is passed through to the callback.
; ^If the callback on a commit hook function returns non-zero,
; then the commit is converted into a rollback.
;
; ^The sqlite3_commit_hook(D,C,P) and sqlite3_rollback_hook(D,C,P) functions
; return the P argument from the previous call of the same function
; on the same [database connection] D, or NULL for
; the first call for each function on D.
;
; The commit and rollback hook callbacks are not reentrant.
; The callback implementation must not do anything that will modify
; the database connection that invoked the callback. Any actions
; to modify the database connection must be deferred until after the
; completion of the [sqlite3_step()] call that triggered the commit
; or rollback hook in the first place.
; Note that running any other SQL statements, including SELECT statements,
; or merely calling [sqlite3_prepare_v2()] and [sqlite3_step()] will modify
; the database connections for the meaning of "modify" in this paragraph.
;
; ^Registering a NULL function disables the callback.
;
; ^When the commit hook callback routine returns zero, the [COMMIT]
; operation is allowed to continue normally. ^If the commit hook
; returns non-zero, then the [COMMIT] is converted into a [ROLLBACK].
; ^The rollback hook is invoked on a rollback that results from a commit
; hook returning non-zero, just as it would be with any other rollback.
;
; ^For the purposes of this API, a transaction is said to have been
; rolled back if an explicit "ROLLBACK" statement is executed, or
; an error or constraint causes an implicit rollback to occur.
; ^The rollback callback is not invoked if a transaction is
; automatically rolled back because the database connection is closed.
;
; See also the [sqlite3_update_hook()] interface.
;@@ void * sqlite3_commit_hook(sqlite3*, int(*)(void*), void*);
sqlite3_commit_hook: "sqlite3_commit_hook" [
arg1 [sqlite3!] ;sqlite3*
arg2 [function! [
arg1 [int-ptr!]
return: [integer!]
]]
arg3 [int-ptr!] ;void*
return: [int-ptr!]
]
;@@ void * sqlite3_rollback_hook(sqlite3*, void(*)(void *), void*);
sqlite3_rollback_hook: "sqlite3_rollback_hook" [
arg1 [sqlite3!] ;sqlite3*
arg2 [function! [
arg1 [int-ptr!]
]]
arg3 [int-ptr!] ;void*
return: [int-ptr!]
]
;- Data Change Notification Callbacks
; METHOD: sqlite3
;
; ^The sqlite3_update_hook() interface registers a callback function
; with the [database connection] identified by the first argument
; to be invoked whenever a row is updated, inserted or deleted in
; a [rowid table].
; ^Any callback set by a previous call to this function
; for the same database connection is overridden.
;
; ^The second argument is a pointer to the function to invoke when a
; row is updated, inserted or deleted in a rowid table.
; ^The first argument to the callback is a copy of the third argument
; to sqlite3_update_hook().
; ^The second callback argument is one of [SQLITE_INSERT], [SQLITE_DELETE],
; or [SQLITE_UPDATE], depending on the operation that caused the callback
; to be invoked.
; ^The third and fourth arguments to the callback contain pointers to the
; database and table name containing the affected row.
; ^The final callback parameter is the [rowid] of the row.
; ^In the case of an update, this is the [rowid] after the update takes place.
;
; ^(The update hook is not invoked when internal system tables are
; modified (i.e. sqlite_master and sqlite_sequence).)^
; ^The update hook is not invoked when [WITHOUT ROWID] tables are modified.
;
; ^In the current implementation, the update hook
; is not invoked when conflicting rows are deleted because of an
; [ON CONFLICT | ON CONFLICT REPLACE] clause. ^Nor is the update hook
; invoked when rows are deleted using the [truncate optimization].
; The exceptions defined in this paragraph might change in a future
; release of SQLite.
;
; The update hook implementation must not do anything that will modify
; the database connection that invoked the update hook. Any actions
; to modify the database connection must be deferred until after the
; completion of the [sqlite3_step()] call that triggered the update hook.
; Note that [sqlite3_prepare_v2()] and [sqlite3_step()] both modify their
; database connections for the meaning of "modify" in this paragraph.
;
; ^The sqlite3_update_hook(D,C,P) function
; returns the P argument from the previous call
; on the same [database connection] D, or NULL for
; the first call on D.
;
; See also the [sqlite3_commit_hook()], [sqlite3_rollback_hook()],
; and [sqlite3_preupdate_hook()] interfaces.
;@@ void * sqlite3_update_hook(
;@@ sqlite3*,
;@@ void(*)(void *,int ,char const *,char const *,sqlite3_int64),
;@@ void*
;@@);
sqlite3_update_hook: "sqlite3_update_hook" [
arg1 [sqlite3!] ;sqlite3*
arg2 [function! [
arg1 [int-ptr!]
arg2 [integer!]
arg3 [c-string!]
arg4 [c-string!]
arg5 [long-long!]
]]
arg3 [int-ptr!] ;void*
return: [int-ptr!]
]
;- Enable Or Disable Shared Pager Cache
;
; ^(This routine enables or disables the sharing of the database cache
; and schema data structures between [database connection | connections]
; to the same database. Sharing is enabled if the argument is true
; and disabled if the argument is false.)^
;
; ^Cache sharing is enabled and disabled for an entire process.
; This is a change as of SQLite [version 3.5.0] ([dateof:3.5.0]).
; In prior versions of SQLite,
; sharing was enabled or disabled for each thread separately.
;
; ^(The cache sharing mode set by this interface effects all subsequent
; calls to [sqlite3_open()], [sqlite3_open_v2()], and [sqlite3_open16()].
; Existing database connections continue use the sharing mode
; that was in effect at the time they were opened.)^
;
; ^(This routine returns [SQLITE_OK] if shared cache was enabled or disabled
; successfully. An [error code] is returned otherwise.)^
;
; ^Shared cache is disabled by default. But this might change in
; future releases of SQLite. Applications that care about shared
; cache setting should set it explicitly.
;
; Note: This method is disabled on MacOS X 10.7 and iOS version 5.0
; and will always return SQLITE_MISUSE. On those systems,
; shared cache mode should be enabled per-database connection via
; [sqlite3_open_v2()] with [SQLITE_OPEN_SHAREDCACHE].
;
; This interface is threadsafe on processors where writing a
; 32-bit integer is atomic.
;
; See Also: [SQLite Shared-Cache Mode]
;@@ int sqlite3_enable_shared_cache(int);
sqlite3_enable_shared_cache: "sqlite3_enable_shared_cache" [
arg1 [integer!] ;int
return: [integer!]
]
;- Attempt To Free Heap Memory
;
; ^The sqlite3_release_memory() interface attempts to free N bytes
; of heap memory by deallocating non-essential memory allocations
; held by the database library. Memory used to cache database
; pages to improve performance is an example of non-essential memory.
; ^sqlite3_release_memory() returns the number of bytes actually freed,
; which might be more or less than the amount requested.
; ^The sqlite3_release_memory() routine is a no-op returning zero
; if SQLite is not compiled with [SQLITE_ENABLE_MEMORY_MANAGEMENT].
;
; See also: [sqlite3_db_release_memory()]
;@@ int sqlite3_release_memory(int);
sqlite3_release_memory: "sqlite3_release_memory" [
arg1 [integer!] ;int
return: [integer!]
]
;- Free Memory Used By A Database Connection
; METHOD: sqlite3
;
; ^The sqlite3_db_release_memory(D) interface attempts to free as much heap
; memory as possible from database connection D. Unlike the
; [sqlite3_release_memory()] interface, this interface is in effect even
; when the [SQLITE_ENABLE_MEMORY_MANAGEMENT] compile-time option is
; omitted.
;
; See also: [sqlite3_release_memory()]
;@@ int sqlite3_db_release_memory(sqlite3*);
sqlite3_db_release_memory: "sqlite3_db_release_memory" [
arg1 [sqlite3!] ;sqlite3*
return: [integer!]
]
;- Impose A Limit On Heap Size
;
; ^The sqlite3_soft_heap_limit64() interface sets and/or queries the
; soft limit on the amount of heap memory that may be allocated by SQLite.
; ^SQLite strives to keep heap memory utilization below the soft heap
; limit by reducing the number of pages held in the page cache
; as heap memory usages approaches the limit.
; ^The soft heap limit is "soft" because even though SQLite strives to stay
; below the limit, it will exceed the limit rather than generate
; an [SQLITE_NOMEM] error. In other words, the soft heap limit
; is advisory only.
;
; ^The return value from sqlite3_soft_heap_limit64() is the size of
; the soft heap limit prior to the call, or negative in the case of an
; error. ^If the argument N is negative
; then no change is made to the soft heap limit. Hence, the current
; size of the soft heap limit can be determined by invoking
; sqlite3_soft_heap_limit64() with a negative argument.
;
; ^If the argument N is zero then the soft heap limit is disabled.
;
; ^(The soft heap limit is not enforced in the current implementation
; if one or more of following conditions are true:
;
; <ul>
; <li> The soft heap limit is set to zero.
; <li> Memory accounting is disabled using a combination of the
; [sqlite3_config]([SQLITE_CONFIG_MEMSTATUS],...) start-time option and
; the [SQLITE_DEFAULT_MEMSTATUS] compile-time option.
; <li> An alternative page cache implementation is specified using
; [sqlite3_config]([SQLITE_CONFIG_PCACHE2],...).
; <li> The page cache allocates from its own memory pool supplied
; by [sqlite3_config]([SQLITE_CONFIG_PAGECACHE],...) rather than
; from the heap.
; </ul>)^
;
; Beginning with SQLite [version 3.7.3] ([dateof:3.7.3]),
; the soft heap limit is enforced
; regardless of whether or not the [SQLITE_ENABLE_MEMORY_MANAGEMENT]
; compile-time option is invoked. With [SQLITE_ENABLE_MEMORY_MANAGEMENT],
; the soft heap limit is enforced on every memory allocation. Without
; [SQLITE_ENABLE_MEMORY_MANAGEMENT], the soft heap limit is only enforced
; when memory is allocated by the page cache. Testing suggests that because
; the page cache is the predominate memory user in SQLite, most
; applications will achieve adequate soft heap limit enforcement without
; the use of [SQLITE_ENABLE_MEMORY_MANAGEMENT].
;
; The circumstances under which SQLite will enforce the soft heap limit may
; changes in future releases of SQLite.
;@@ sqlite3_int64 sqlite3_soft_heap_limit64(sqlite3_int64 N);
sqlite3_soft_heap_limit64: "sqlite3_soft_heap_limit64" [
N [long-long!] ;sqlite3_int64
return: [long-long!]
]
;- Deprecated Soft Heap Limit Interface
; DEPRECATED
;
; This is a deprecated version of the [sqlite3_soft_heap_limit64()]
; interface. This routine is provided for historical compatibility
; only. All new applications should use the
; [sqlite3_soft_heap_limit64()] interface rather than this one.
;@@ void sqlite3_soft_heap_limit(int N);
sqlite3_soft_heap_limit: "sqlite3_soft_heap_limit" [
N [integer!] ;int
]
;- Extract Metadata About A Column Of A Table
; METHOD: sqlite3
;
; ^(The sqlite3_table_column_metadata(X,D,T,C,....) routine returns
; information about column C of table T in database D
; on [database connection] X.)^ ^The sqlite3_table_column_metadata()
; interface returns SQLITE_OK and fills in the non-NULL pointers in
; the final five arguments with appropriate values if the specified
; column exists. ^The sqlite3_table_column_metadata() interface returns
; SQLITE_ERROR and if the specified column does not exist.
; ^If the column-name parameter to sqlite3_table_column_metadata() is a
; NULL pointer, then this routine simply checks for the existence of the
; table and returns SQLITE_OK if the table exists and SQLITE_ERROR if it
; does not.
;
; ^The column is identified by the second, third and fourth parameters to
; this function. ^(The second parameter is either the name of the database
; (i.e. "main", "temp", or an attached database) containing the specified
; table or NULL.)^ ^If it is NULL, then all attached databases are searched
; for the table using the same algorithm used by the database engine to
; resolve unqualified table references.
;
; ^The third and fourth parameters to this function are the table and column
; name of the desired column, respectively.
;
; ^Metadata is returned by writing to the memory locations passed as the 5th
; and subsequent parameters to this function. ^Any of these arguments may be
; NULL, in which case the corresponding element of metadata is omitted.
;
; ^(<blockquote>
; <table border="1">
; <tr><th> Parameter <th> Output<br>Type <th> Description
;
; <tr><td> 5th <td> const char* <td> Data type
; <tr><td> 6th <td> const char* <td> Name of default collation sequence
; <tr><td> 7th <td> int <td> True if column has a NOT NULL constraint
; <tr><td> 8th <td> int <td> True if column is part of the PRIMARY KEY
; <tr><td> 9th <td> int <td> True if column is [AUTOINCREMENT]
; </table>
; </blockquote>)^
;
; ^The memory pointed to by the character pointers returned for the
; declaration type and collation sequence is valid until the next
; call to any SQLite API function.
;
; ^If the specified table is actually a view, an [error code] is returned.
;
; ^If the specified column is "rowid", "oid" or "_rowid_" and the table
; is not a [WITHOUT ROWID] table and an
; [INTEGER PRIMARY KEY] column has been explicitly declared, then the output
; parameters are set for the explicitly declared column. ^(If there is no
; [INTEGER PRIMARY KEY] column, then the outputs
; for the [rowid] are set as follows:
;
; <pre>
; data type: "INTEGER"
; collation sequence: "BINARY"
; not null: 0
; primary key: 1
; auto increment: 0
; </pre>)^
;
; ^This function causes all database schemas to be read from disk and
; parsed, if that has not already been done, and returns an error if
; any errors are encountered while loading the schema.
;@@ int sqlite3_table_column_metadata(
;@@ sqlite3 *db, /* Connection handle */
;@@ const char *zDbName, /* Database name or NULL */
;@@ const char *zTableName, /* Table name */
;@@ const char *zColumnName, /* Column name */
;@@ char const **pzDataType, /* OUTPUT: Declared data type */
;@@ char const **pzCollSeq, /* OUTPUT: Collation sequence name */
;@@ int *pNotNull, /* OUTPUT: True if NOT NULL constraint exists */
;@@ int *pPrimaryKey, /* OUTPUT: True if column part of PK */
;@@ int *pAutoinc /* OUTPUT: True if column is auto-increment */
;@@);
sqlite3_table_column_metadata: "sqlite3_table_column_metadata" [
db [sqlite3!] ; Connection handle
zDbName [c-string!] ; Database name or NULL
zTableName [c-string!] ; Table name
zColumnName [c-string!] ; Column name
pzDataType [string-ref!] ; OUTPUT: Declared data type
pzCollSeq [string-ref!] ; OUTPUT: Collation sequence name
pNotNull [int-ptr!] ; OUTPUT: True if NOT NULL constraint exists
pPrimaryKey [int-ptr!] ; OUTPUT: True if column part of PK
pAutoinc [int-ptr!] ; OUTPUT: True if column is auto-increment
return: [integer!]
]
;- Load An Extension
; METHOD: sqlite3
;
; ^This interface loads an SQLite extension library from the named file.
;
; ^The sqlite3_load_extension() interface attempts to load an
; [SQLite extension] library contained in the file zFile. If
; the file cannot be loaded directly, attempts are made to load
; with various operating-system specific extensions added.
; So for example, if "samplelib" cannot be loaded, then names like
; "samplelib.so" or "samplelib.dylib" or "samplelib.dll" might
; be tried also.
;
; ^The entry point is zProc.
; ^(zProc may be 0, in which case SQLite will try to come up with an
; entry point name on its own. It first tries "sqlite3_extension_init".
; If that does not work, it constructs a name "sqlite3_X_init" where the
; X is consists of the lower-case equivalent of all ASCII alphabetic
; characters in the filename from the last "/" to the first following
; "." and omitting any initial "lib".)^
; ^The sqlite3_load_extension() interface returns
; [SQLITE_OK] on success and [SQLITE_ERROR] if something goes wrong.
; ^If an error occurs and pzErrMsg is not 0, then the
; [sqlite3_load_extension()] interface shall attempt to
; fill *pzErrMsg with error message text stored in memory
; obtained from [sqlite3_malloc()]. The calling function
; should free this memory by calling [sqlite3_free()].
;
; ^Extension loading must be enabled using
; [sqlite3_enable_load_extension()] or
; [sqlite3_db_config](db,[SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION],1,NULL)
; prior to calling this API,
; otherwise an error will be returned.
;
; <b>Security warning:</b> It is recommended that the
; [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method be used to enable only this
; interface. The use of the [sqlite3_enable_load_extension()] interface
; should be avoided. This will keep the SQL function [load_extension()]
; disabled and prevent SQL injections from giving attackers
; access to extension loading capabilities.
;
; See also the [load_extension() SQL function].
;@@ int sqlite3_load_extension(
;@@ sqlite3 *db, /* Load the extension into this database connection */
;@@ const char *zFile, /* Name of the shared library containing extension */
;@@ const char *zProc, /* Entry point. Derived from zFile if 0 */
;@@ char **pzErrMsg /* Put error message here if not 0 */
;@@);
sqlite3_load_extension: "sqlite3_load_extension" [
db [sqlite3!] ; Load the extension into this database connection
zFile [c-string!] ; Name of the shared library containing extension
zProc [c-string!] ; Entry point. Derived from zFile if 0
pzErrMsg [string-ref!] ; Put error message here if not 0
return: [integer!]
]
;- Enable Or Disable Extension Loading
; METHOD: sqlite3
;
; ^So as not to open security holes in older applications that are
; unprepared to deal with [extension loading], and as a means of disabling
; [extension loading] while evaluating user-entered SQL, the following API
; is provided to turn the [sqlite3_load_extension()] mechanism on and off.
;
; ^Extension loading is off by default.
; ^Call the sqlite3_enable_load_extension() routine with onoff==1
; to turn extension loading on and call it with onoff==0 to turn
; it back off again.
;
; ^This interface enables or disables both the C-API
; [sqlite3_load_extension()] and the SQL function [load_extension()].
; ^(Use [sqlite3_db_config](db,[SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION],..)
; to enable or disable only the C-API.)^
;
; <b>Security warning:</b> It is recommended that extension loading
; be disabled using the [SQLITE_DBCONFIG_ENABLE_LOAD_EXTENSION] method
; rather than this interface, so the [load_extension()] SQL function
; remains disabled. This will prevent SQL injections from giving attackers
; access to extension loading capabilities.
;@@ int sqlite3_enable_load_extension(sqlite3 *db, int onoff);
sqlite3_enable_load_extension: "sqlite3_enable_load_extension" [
db [sqlite3!] ;sqlite3 *
onoff [integer!] ;int
return: [integer!]
]
;- Automatically Load Statically Linked Extensions
;
; ^This interface causes the xEntryPoint() function to be invoked for
; each new [database connection] that is created. The idea here is that
; xEntryPoint() is the entry point for a statically linked [SQLite extension]
; that is to be automatically loaded into all new database connections.
;
; ^(Even though the function prototype shows that xEntryPoint() takes
; no arguments and returns void, SQLite invokes xEntryPoint() with three
; arguments and expects an integer result as if the signature of the
; entry point where as follows:
;
; <blockquote><pre>
; &nbsp; int xEntryPoint(
; &nbsp; sqlite3 *db,
; &nbsp; const char **pzErrMsg,
; &nbsp; const struct sqlite3_api_routines *pThunk
; &nbsp; );
; </pre></blockquote>)^
;
; If the xEntryPoint routine encounters an error, it should make *pzErrMsg
; point to an appropriate error message (obtained from [sqlite3_mprintf()])
; and return an appropriate [error code]. ^SQLite ensures that *pzErrMsg
; is NULL before calling the xEntryPoint(). ^SQLite will invoke
; [sqlite3_free()] on *pzErrMsg after xEntryPoint() returns. ^If any
; xEntryPoint() returns an error, the [sqlite3_open()], [sqlite3_open16()],
; or [sqlite3_open_v2()] call that provoked the xEntryPoint() will fail.
;
; ^Calling sqlite3_auto_extension(X) with an entry point X that is already
; on the list of automatic extensions is a harmless no-op. ^No entry point
; will be called more than once for each database connection that is opened.
;
; See also: [sqlite3_reset_auto_extension()]
; and [sqlite3_cancel_auto_extension()]
;@@ int sqlite3_auto_extension(void(*xEntryPoint)(void));
sqlite3_auto_extension: "sqlite3_auto_extension" [
return: [integer!]
]
;- Cancel Automatic Extension Loading
;
; ^The [sqlite3_cancel_auto_extension(X)] interface unregisters the
; initialization routine X that was registered using a prior call to
; [sqlite3_auto_extension(X)]. ^The [sqlite3_cancel_auto_extension(X)]
; routine returns 1 if initialization routine X was successfully
; unregistered and it returns 0 if X was not on the list of initialization
; routines.
;@@ int sqlite3_cancel_auto_extension(void(*xEntryPoint)(void));
sqlite3_cancel_auto_extension: "sqlite3_cancel_auto_extension" [
return: [integer!]
]
;- Reset Automatic Extension Loading
;
; ^This interface disables all automatic extensions previously
; registered using [sqlite3_auto_extension()].
;@@ void sqlite3_reset_auto_extension(void);
sqlite3_reset_auto_extension: "sqlite3_reset_auto_extension" [
]
;- Register A Virtual Table Implementation
; METHOD: sqlite3
;
; ^These routines are used to register a new [virtual table module] name.
; ^Module names must be registered before
; creating a new [virtual table] using the module and before using a
; preexisting [virtual table] for the module.
;
; ^The module name is registered on the [database connection] specified
; by the first parameter. ^The name of the module is given by the
; second parameter. ^The third parameter is a pointer to
; the implementation of the [virtual table module]. ^The fourth
; parameter is an arbitrary client data pointer that is passed through
; into the [xCreate] and [xConnect] methods of the virtual table module
; when a new virtual table is be being created or reinitialized.
;
; ^The sqlite3_create_module_v2() interface has a fifth parameter which
; is a pointer to a destructor for the pClientData. ^SQLite will
; invoke the destructor function (if it is not NULL) when SQLite
; no longer needs the pClientData pointer. ^The destructor will also
; be invoked if the call to sqlite3_create_module_v2() fails.
; ^The sqlite3_create_module()
; interface is equivalent to sqlite3_create_module_v2() with a NULL
; destructor.
;@@ int sqlite3_create_module(
;@@ sqlite3 *db, /* SQLite connection to register module with */
;@@ const char *zName, /* Name of the module */
;@@ const sqlite3_module *p, /* Methods for the module */
;@@ void *pClientData /* Client data for xCreate/xConnect */
;@@);
sqlite3_create_module: "sqlite3_create_module" [
db [sqlite3!] ; SQLite connection to register module with
zName [c-string!] ; Name of the module
p [sqlite3_module!] ; Methods for the module
pClientData [int-ptr!] ; Client data for xCreate/xConnect
return: [integer!]
]
;@@ int sqlite3_create_module_v2(
;@@ sqlite3 *db, /* SQLite connection to register module with */
;@@ const char *zName, /* Name of the module */
;@@ const sqlite3_module *p, /* Methods for the module */
;@@ void *pClientData, /* Client data for xCreate/xConnect */
;@@ void(*xDestroy)(void*) /* Module destructor function */
;@@);
sqlite3_create_module_v2: "sqlite3_create_module_v2" [
db [sqlite3!] ; SQLite connection to register module with
zName [c-string!] ; Name of the module
p [sqlite3_module!] ; Methods for the module
pClientData [int-ptr!] ; Client data for xCreate/xConnect
xDestroy [function! [
arg1 [int-ptr!]
]]
return: [integer!]
]
;- Declare The Schema Of A Virtual Table
;
; ^The [xCreate] and [xConnect] methods of a
; [virtual table module] call this interface
; to declare the format (the names and datatypes of the columns) of
; the virtual tables they implement.
;@@ int sqlite3_declare_vtab(sqlite3*, const char *zSQL);
sqlite3_declare_vtab: "sqlite3_declare_vtab" [
arg1 [sqlite3!] ;sqlite3*
zSQL [c-string!] ;const char *
return: [integer!]
]
;- Overload A Function For A Virtual Table
; METHOD: sqlite3
;
; ^(Virtual tables can provide alternative implementations of functions
; using the [xFindFunction] method of the [virtual table module].
; But global versions of those functions
; must exist in order to be overloaded.)^
;
; ^(This API makes sure a global version of a function with a particular
; name and number of parameters exists. If no such function exists
; before this API is called, a new function is created.)^ ^The implementation
; of the new function always causes an exception to be thrown. So
; the new function is not good for anything by itself. Its only
; purpose is to be a placeholder function that can be overloaded
; by a [virtual table].
;@@ int sqlite3_overload_function(sqlite3*, const char *zFuncName, int nArg);
sqlite3_overload_function: "sqlite3_overload_function" [
arg1 [sqlite3!] ;sqlite3*
zFuncName [c-string!] ;const char *
nArg [integer!] ;int
return: [integer!]
]
;- Open A BLOB For Incremental I/O
; METHOD: sqlite3
; CONSTRUCTOR: sqlite3_blob
;
; ^(This interfaces opens a [BLOB handle | handle] to the BLOB located
; in row iRow, column zColumn, table zTable in database zDb;
; in other words, the same BLOB that would be selected by:
;
; <pre>
; SELECT zColumn FROM zDb.zTable WHERE [rowid] = iRow;
; </pre>)^
;
; ^(Parameter zDb is not the filename that contains the database, but
; rather the symbolic name of the database. For attached databases, this is
; the name that appears after the AS keyword in the [ATTACH] statement.
; For the main database file, the database name is "main". For TEMP
; tables, the database name is "temp".)^
;
; ^If the flags parameter is non-zero, then the BLOB is opened for read
; and write access. ^If the flags parameter is zero, the BLOB is opened for
; read-only access.
;
; ^(On success, [SQLITE_OK] is returned and the new [BLOB handle] is stored
; in *ppBlob. Otherwise an [error code] is returned and, unless the error
; code is SQLITE_MISUSE, *ppBlob is set to NULL.)^ ^This means that, provided
; the API is not misused, it is always safe to call [sqlite3_blob_close()]
; on *ppBlob after this function it returns.
;
; This function fails with SQLITE_ERROR if any of the following are true:
; <ul>
; <li> ^(Database zDb does not exist)^,
; <li> ^(Table zTable does not exist within database zDb)^,
; <li> ^(Table zTable is a WITHOUT ROWID table)^,
; <li> ^(Column zColumn does not exist)^,
; <li> ^(Row iRow is not present in the table)^,
; <li> ^(The specified column of row iRow contains a value that is not
; a TEXT or BLOB value)^,
; <li> ^(Column zColumn is part of an index, PRIMARY KEY or UNIQUE
; constraint and the blob is being opened for read/write access)^,
; <li> ^([foreign key constraints | Foreign key constraints] are enabled,
; column zColumn is part of a [child key] definition and the blob is
; being opened for read/write access)^.
; </ul>
;
; ^Unless it returns SQLITE_MISUSE, this function sets the
; [database connection] error code and message accessible via
; [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions.
;
; A BLOB referenced by sqlite3_blob_open() may be read using the
; [sqlite3_blob_read()] interface and modified by using
; [sqlite3_blob_write()]. The [BLOB handle] can be moved to a
; different row of the same table using the [sqlite3_blob_reopen()]
; interface. However, the column, table, or database of a [BLOB handle]
; cannot be changed after the [BLOB handle] is opened.
;
; ^(If the row that a BLOB handle points to is modified by an
; [UPDATE], [DELETE], or by [ON CONFLICT] side-effects
; then the BLOB handle is marked as "expired".
; This is true if any column of the row is changed, even a column
; other than the one the BLOB handle is open on.)^
; ^Calls to [sqlite3_blob_read()] and [sqlite3_blob_write()] for
; an expired BLOB handle fail with a return code of [SQLITE_ABORT].
; ^(Changes written into a BLOB prior to the BLOB expiring are not
; rolled back by the expiration of the BLOB. Such changes will eventually
; commit if the transaction continues to completion.)^
;
; ^Use the [sqlite3_blob_bytes()] interface to determine the size of
; the opened blob. ^The size of a blob may not be changed by this
; interface. Use the [UPDATE] SQL command to change the size of a
; blob.
;
; ^The [sqlite3_bind_zeroblob()] and [sqlite3_result_zeroblob()] interfaces
; and the built-in [zeroblob] SQL function may be used to create a
; zero-filled blob to read or write using the incremental-blob interface.
;
; To avoid a resource leak, every open [BLOB handle] should eventually
; be released by a call to [sqlite3_blob_close()].
;
; See also: [sqlite3_blob_close()],
; [sqlite3_blob_reopen()], [sqlite3_blob_read()],
; [sqlite3_blob_bytes()], [sqlite3_blob_write()].
;@@ int sqlite3_blob_open(
;@@ sqlite3*,
;@@ const char *zDb,
;@@ const char *zTable,
;@@ const char *zColumn,
;@@ sqlite3_int64 iRow,
;@@ int flags,
;@@ sqlite3_blob **ppBlob
;@@);
sqlite3_blob_open: "sqlite3_blob_open" [
arg1 [sqlite3!] ;sqlite3*
zDb [c-string!] ;const char *
zTable [c-string!] ;const char *
zColumn [c-string!] ;const char *
iRow [long-long!] ;sqlite3_int64
flags [integer!] ;int
ppBlob [sqlite3-blob-ref!] ;sqlite3_blob **
return: [integer!]
]
;- Move a BLOB Handle to a New Row
; METHOD: sqlite3_blob
;
; ^This function is used to move an existing [BLOB handle] so that it points
; to a different row of the same database table. ^The new row is identified
; by the rowid value passed as the second argument. Only the row can be
; changed. ^The database, table and column on which the blob handle is open
; remain the same. Moving an existing [BLOB handle] to a new row is
; faster than closing the existing handle and opening a new one.
;
; ^(The new row must meet the same criteria as for [sqlite3_blob_open()] -
; it must exist and there must be either a blob or text value stored in
; the nominated column.)^ ^If the new row is not present in the table, or if
; it does not contain a blob or text value, or if another error occurs, an
; SQLite error code is returned and the blob handle is considered aborted.
; ^All subsequent calls to [sqlite3_blob_read()], [sqlite3_blob_write()] or
; [sqlite3_blob_reopen()] on an aborted blob handle immediately return
; SQLITE_ABORT. ^Calling [sqlite3_blob_bytes()] on an aborted blob handle
; always returns zero.
;
; ^This function sets the database handle error code and message.
;@@ int sqlite3_blob_reopen(sqlite3_blob *, sqlite3_int64);
sqlite3_blob_reopen: "sqlite3_blob_reopen" [
arg1 [sqlite3-blob!] ;sqlite3_blob *
arg2 [long-long!] ;sqlite3_int64
return: [integer!]
]
;- Close A BLOB Handle
; DESTRUCTOR: sqlite3_blob
;
; ^This function closes an open [BLOB handle]. ^(The BLOB handle is closed
; unconditionally. Even if this routine returns an error code, the
; handle is still closed.)^
;
; ^If the blob handle being closed was opened for read-write access, and if
; the database is in auto-commit mode and there are no other open read-write
; blob handles or active write statements, the current transaction is
; committed. ^If an error occurs while committing the transaction, an error
; code is returned and the transaction rolled back.
;
; Calling this function with an argument that is not a NULL pointer or an
; open blob handle results in undefined behaviour. ^Calling this routine
; with a null pointer (such as would be returned by a failed call to
; [sqlite3_blob_open()]) is a harmless no-op. ^Otherwise, if this function
; is passed a valid open blob handle, the values returned by the
; sqlite3_errcode() and sqlite3_errmsg() functions are set before returning.
;@@ int sqlite3_blob_close(sqlite3_blob *);
sqlite3_blob_close: "sqlite3_blob_close" [
arg1 [sqlite3-blob!] ;sqlite3_blob *
return: [integer!]
]
;- Return The Size Of An Open BLOB
; METHOD: sqlite3_blob
;
; ^Returns the size in bytes of the BLOB accessible via the
; successfully opened [BLOB handle] in its only argument. ^The
; incremental blob I/O routines can only read or overwriting existing
; blob content; they cannot change the size of a blob.
;
; This routine only works on a [BLOB handle] which has been created
; by a prior successful call to [sqlite3_blob_open()] and which has not
; been closed by [sqlite3_blob_close()]. Passing any other pointer in
; to this routine results in undefined and probably undesirable behavior.
;@@ int sqlite3_blob_bytes(sqlite3_blob *);
sqlite3_blob_bytes: "sqlite3_blob_bytes" [
arg1 [sqlite3-blob!] ;sqlite3_blob *
return: [integer!]
]
;- Read Data From A BLOB Incrementally
; METHOD: sqlite3_blob
;
; ^(This function is used to read data from an open [BLOB handle] into a
; caller-supplied buffer. N bytes of data are copied into buffer Z
; from the open BLOB, starting at offset iOffset.)^
;
; ^If offset iOffset is less than N bytes from the end of the BLOB,
; [SQLITE_ERROR] is returned and no data is read. ^If N or iOffset is
; less than zero, [SQLITE_ERROR] is returned and no data is read.
; ^The size of the blob (and hence the maximum value of N+iOffset)
; can be determined using the [sqlite3_blob_bytes()] interface.
;
; ^An attempt to read from an expired [BLOB handle] fails with an
; error code of [SQLITE_ABORT].
;
; ^(On success, sqlite3_blob_read() returns SQLITE_OK.
; Otherwise, an [error code] or an [extended error code] is returned.)^
;
; This routine only works on a [BLOB handle] which has been created
; by a prior successful call to [sqlite3_blob_open()] and which has not
; been closed by [sqlite3_blob_close()]. Passing any other pointer in
; to this routine results in undefined and probably undesirable behavior.
;
; See also: [sqlite3_blob_write()].
;@@ int sqlite3_blob_read(sqlite3_blob *, void *Z, int N, int iOffset);
sqlite3_blob_read: "sqlite3_blob_read" [
arg1 [sqlite3-blob!] ;sqlite3_blob *
Z [int-ptr!] ;void *
N [integer!] ;int
iOffset [integer!] ;int
return: [integer!]
]
;- Write Data Into A BLOB Incrementally
; METHOD: sqlite3_blob
;
; ^(This function is used to write data into an open [BLOB handle] from a
; caller-supplied buffer. N bytes of data are copied from the buffer Z
; into the open BLOB, starting at offset iOffset.)^
;
; ^(On success, sqlite3_blob_write() returns SQLITE_OK.
; Otherwise, an [error code] or an [extended error code] is returned.)^
; ^Unless SQLITE_MISUSE is returned, this function sets the
; [database connection] error code and message accessible via
; [sqlite3_errcode()] and [sqlite3_errmsg()] and related functions.
;
; ^If the [BLOB handle] passed as the first argument was not opened for
; writing (the flags parameter to [sqlite3_blob_open()] was zero),
; this function returns [SQLITE_READONLY].
;
; This function may only modify the contents of the BLOB; it is
; not possible to increase the size of a BLOB using this API.
; ^If offset iOffset is less than N bytes from the end of the BLOB,
; [SQLITE_ERROR] is returned and no data is written. The size of the
; BLOB (and hence the maximum value of N+iOffset) can be determined
; using the [sqlite3_blob_bytes()] interface. ^If N or iOffset are less
; than zero [SQLITE_ERROR] is returned and no data is written.
;
; ^An attempt to write to an expired [BLOB handle] fails with an
; error code of [SQLITE_ABORT]. ^Writes to the BLOB that occurred
; before the [BLOB handle] expired are not rolled back by the
; expiration of the handle, though of course those changes might
; have been overwritten by the statement that expired the BLOB handle
; or by other independent statements.
;
; This routine only works on a [BLOB handle] which has been created
; by a prior successful call to [sqlite3_blob_open()] and which has not
; been closed by [sqlite3_blob_close()]. Passing any other pointer in
; to this routine results in undefined and probably undesirable behavior.
;
; See also: [sqlite3_blob_read()].
;@@ int sqlite3_blob_write(sqlite3_blob *, const void *z, int n, int iOffset);
sqlite3_blob_write: "sqlite3_blob_write" [
arg1 [sqlite3-blob!] ;sqlite3_blob *
z [byte-ptr!] ;const void *
n [integer!] ;int
iOffset [integer!] ;int
return: [integer!]
]
;- Virtual File System Objects
;
; A virtual filesystem (VFS) is an [sqlite3_vfs] object
; that SQLite uses to interact
; with the underlying operating system. Most SQLite builds come with a
; single default VFS that is appropriate for the host computer.
; New VFSes can be registered and existing VFSes can be unregistered.
; The following interfaces are provided.
;
; ^The sqlite3_vfs_find() interface returns a pointer to a VFS given its name.
; ^Names are case sensitive.
; ^Names are zero-terminated UTF-8 strings.
; ^If there is no match, a NULL pointer is returned.
; ^If zVfsName is NULL then the default VFS is returned.
;
; ^New VFSes are registered with sqlite3_vfs_register().
; ^Each new VFS becomes the default VFS if the makeDflt flag is set.
; ^The same VFS can be registered multiple times without injury.
; ^To make an existing VFS into the default VFS, register it again
; with the makeDflt flag set. If two different VFSes with the
; same name are registered, the behavior is undefined. If a
; VFS is registered with a name that is NULL or an empty string,
; then the behavior is undefined.
;
; ^Unregister a VFS with the sqlite3_vfs_unregister() interface.
; ^(If the default VFS is unregistered, another VFS is chosen as
; the default. The choice for the new VFS is arbitrary.)^
;@@ sqlite3_vfs * sqlite3_vfs_find(const char *zVfsName);
sqlite3_vfs_find: "sqlite3_vfs_find" [
zVfsName [c-string!] ;const char *
return: [sqlite3-vfs!]
]
;@@ int sqlite3_vfs_register(sqlite3_vfs*, int makeDflt);
sqlite3_vfs_register: "sqlite3_vfs_register" [
arg1 [sqlite3-vfs!] ;sqlite3_vfs*
makeDflt [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_vfs_unregister(sqlite3_vfs*);
sqlite3_vfs_unregister: "sqlite3_vfs_unregister" [
arg1 [sqlite3-vfs!] ;sqlite3_vfs*
return: [integer!]
]
;- Mutexes
;
; The SQLite core uses these routines for thread
; synchronization. Though they are intended for internal
; use by SQLite, code that links against SQLite is
; permitted to use any of these routines.
;
; The SQLite source code contains multiple implementations
; of these mutex routines. An appropriate implementation
; is selected automatically at compile-time. The following
; implementations are available in the SQLite core:
;
; <ul>
; <li> SQLITE_MUTEX_PTHREADS
; <li> SQLITE_MUTEX_W32
; <li> SQLITE_MUTEX_NOOP
; </ul>
;
; The SQLITE_MUTEX_NOOP implementation is a set of routines
; that does no real locking and is appropriate for use in
; a single-threaded application. The SQLITE_MUTEX_PTHREADS and
; SQLITE_MUTEX_W32 implementations are appropriate for use on Unix
; and Windows.
;
; If SQLite is compiled with the SQLITE_MUTEX_APPDEF preprocessor
; macro defined (with "-DSQLITE_MUTEX_APPDEF=1"), then no mutex
; implementation is included with the library. In this case the
; application must supply a custom mutex implementation using the
; [SQLITE_CONFIG_MUTEX] option of the sqlite3_config() function
; before calling sqlite3_initialize() or any other public sqlite3_
; function that calls sqlite3_initialize().
;
; ^The sqlite3_mutex_alloc() routine allocates a new
; mutex and returns a pointer to it. ^The sqlite3_mutex_alloc()
; routine returns NULL if it is unable to allocate the requested
; mutex. The argument to sqlite3_mutex_alloc() must one of these
; integer constants:
;
; <ul>
; <li> SQLITE_MUTEX_FAST
; <li> SQLITE_MUTEX_RECURSIVE
; <li> SQLITE_MUTEX_STATIC_MASTER
; <li> SQLITE_MUTEX_STATIC_MEM
; <li> SQLITE_MUTEX_STATIC_OPEN
; <li> SQLITE_MUTEX_STATIC_PRNG
; <li> SQLITE_MUTEX_STATIC_LRU
; <li> SQLITE_MUTEX_STATIC_PMEM
; <li> SQLITE_MUTEX_STATIC_APP1
; <li> SQLITE_MUTEX_STATIC_APP2
; <li> SQLITE_MUTEX_STATIC_APP3
; <li> SQLITE_MUTEX_STATIC_VFS1
; <li> SQLITE_MUTEX_STATIC_VFS2
; <li> SQLITE_MUTEX_STATIC_VFS3
; </ul>
;
; ^The first two constants (SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE)
; cause sqlite3_mutex_alloc() to create
; a new mutex. ^The new mutex is recursive when SQLITE_MUTEX_RECURSIVE
; is used but not necessarily so when SQLITE_MUTEX_FAST is used.
; The mutex implementation does not need to make a distinction
; between SQLITE_MUTEX_RECURSIVE and SQLITE_MUTEX_FAST if it does
; not want to. SQLite will only request a recursive mutex in
; cases where it really needs one. If a faster non-recursive mutex
; implementation is available on the host platform, the mutex subsystem
; might return such a mutex in response to SQLITE_MUTEX_FAST.
;
; ^The other allowed parameters to sqlite3_mutex_alloc() (anything other
; than SQLITE_MUTEX_FAST and SQLITE_MUTEX_RECURSIVE) each return
; a pointer to a static preexisting mutex. ^Nine static mutexes are
; used by the current version of SQLite. Future versions of SQLite
; may add additional static mutexes. Static mutexes are for internal
; use by SQLite only. Applications that use SQLite mutexes should
; use only the dynamic mutexes returned by SQLITE_MUTEX_FAST or
; SQLITE_MUTEX_RECURSIVE.
;
; ^Note that if one of the dynamic mutex parameters (SQLITE_MUTEX_FAST
; or SQLITE_MUTEX_RECURSIVE) is used then sqlite3_mutex_alloc()
; returns a different mutex on every call. ^For the static
; mutex types, the same mutex is returned on every call that has
; the same type number.
;
; ^The sqlite3_mutex_free() routine deallocates a previously
; allocated dynamic mutex. Attempting to deallocate a static
; mutex results in undefined behavior.
;
; ^The sqlite3_mutex_enter() and sqlite3_mutex_try() routines attempt
; to enter a mutex. ^If another thread is already within the mutex,
; sqlite3_mutex_enter() will block and sqlite3_mutex_try() will return
; SQLITE_BUSY. ^The sqlite3_mutex_try() interface returns [SQLITE_OK]
; upon successful entry. ^(Mutexes created using
; SQLITE_MUTEX_RECURSIVE can be entered multiple times by the same thread.
; In such cases, the
; mutex must be exited an equal number of times before another thread
; can enter.)^ If the same thread tries to enter any mutex other
; than an SQLITE_MUTEX_RECURSIVE more than once, the behavior is undefined.
;
; ^(Some systems (for example, Windows 95) do not support the operation
; implemented by sqlite3_mutex_try(). On those systems, sqlite3_mutex_try()
; will always return SQLITE_BUSY. The SQLite core only ever uses
; sqlite3_mutex_try() as an optimization so this is acceptable
; behavior.)^
;
; ^The sqlite3_mutex_leave() routine exits a mutex that was
; previously entered by the same thread. The behavior
; is undefined if the mutex is not currently entered by the
; calling thread or is not currently allocated.
;
; ^If the argument to sqlite3_mutex_enter(), sqlite3_mutex_try(), or
; sqlite3_mutex_leave() is a NULL pointer, then all three routines
; behave as no-ops.
;
; See also: [sqlite3_mutex_held()] and [sqlite3_mutex_notheld()].
;@@ sqlite3_mutex * sqlite3_mutex_alloc(int);
sqlite3_mutex_alloc: "sqlite3_mutex_alloc" [
arg1 [integer!] ;int
return: [sqlite3-mutex!]
]
;@@ void sqlite3_mutex_free(sqlite3_mutex*);
sqlite3_mutex_free: "sqlite3_mutex_free" [
arg1 [sqlite3-mutex!] ;sqlite3_mutex*
]
;@@ void sqlite3_mutex_enter(sqlite3_mutex*);
sqlite3_mutex_enter: "sqlite3_mutex_enter" [
arg1 [sqlite3-mutex!] ;sqlite3_mutex*
]
;@@ int sqlite3_mutex_try(sqlite3_mutex*);
sqlite3_mutex_try: "sqlite3_mutex_try" [
arg1 [sqlite3-mutex!] ;sqlite3_mutex*
return: [integer!]
]
;@@ void sqlite3_mutex_leave(sqlite3_mutex*);
sqlite3_mutex_leave: "sqlite3_mutex_leave" [
arg1 [sqlite3-mutex!] ;sqlite3_mutex*
]
;- Mutex Verification Routines
;
; The sqlite3_mutex_held() and sqlite3_mutex_notheld() routines
; are intended for use inside assert() statements. The SQLite core
; never uses these routines except inside an assert() and applications
; are advised to follow the lead of the core. The SQLite core only
; provides implementations for these routines when it is compiled
; with the SQLITE_DEBUG flag. External mutex implementations
; are only required to provide these routines if SQLITE_DEBUG is
; defined and if NDEBUG is not defined.
;
; These routines should return true if the mutex in their argument
; is held or not held, respectively, by the calling thread.
;
; The implementation is not required to provide versions of these
; routines that actually work. If the implementation does not provide working
; versions of these routines, it should at least provide stubs that always
; return true so that one does not get spurious assertion failures.
;
; If the argument to sqlite3_mutex_held() is a NULL pointer then
; the routine should return 1. This seems counter-intuitive since
; clearly the mutex cannot be held if it does not exist. But
; the reason the mutex does not exist is because the build is not
; using mutexes. And we do not want the assert() containing the
; call to sqlite3_mutex_held() to fail, so a non-zero return is
; the appropriate thing to do. The sqlite3_mutex_notheld()
; interface should also return 1 when given a NULL pointer.
;@@ int sqlite3_mutex_held(sqlite3_mutex*);
sqlite3_mutex_held: "sqlite3_mutex_held" [
arg1 [sqlite3-mutex!] ;sqlite3_mutex*
return: [integer!]
]
;@@ int sqlite3_mutex_notheld(sqlite3_mutex*);
sqlite3_mutex_notheld: "sqlite3_mutex_notheld" [
arg1 [sqlite3-mutex!] ;sqlite3_mutex*
return: [integer!]
]
;- Retrieve the mutex for a database connection
; METHOD: sqlite3
;
; ^This interface returns a pointer the [sqlite3_mutex] object that
; serializes access to the [database connection] given in the argument
; when the [threading mode] is Serialized.
; ^If the [threading mode] is Single-thread or Multi-thread then this
; routine returns a NULL pointer.
;@@ sqlite3_mutex * sqlite3_db_mutex(sqlite3*);
sqlite3_db_mutex: "sqlite3_db_mutex" [
arg1 [sqlite3!] ;sqlite3*
return: [sqlite3-mutex!]
]
;- Low-Level Control Of Database Files
; METHOD: sqlite3
;
; ^The [sqlite3_file_control()] interface makes a direct call to the
; xFileControl method for the [sqlite3_io_methods] object associated
; with a particular database identified by the second argument. ^The
; name of the database is "main" for the main database or "temp" for the
; TEMP database, or the name that appears after the AS keyword for
; databases that are added using the [ATTACH] SQL command.
; ^A NULL pointer can be used in place of "main" to refer to the
; main database file.
; ^The third and fourth parameters to this routine
; are passed directly through to the second and third parameters of
; the xFileControl method. ^The return value of the xFileControl
; method becomes the return value of this routine.
;
; ^The SQLITE_FCNTL_FILE_POINTER value for the op parameter causes
; a pointer to the underlying [sqlite3_file] object to be written into
; the space pointed to by the 4th parameter. ^The SQLITE_FCNTL_FILE_POINTER
; case is a short-circuit path which does not actually invoke the
; underlying sqlite3_io_methods.xFileControl method.
;
; ^If the second parameter (zDbName) does not match the name of any
; open database file, then SQLITE_ERROR is returned. ^This error
; code is not remembered and will not be recalled by [sqlite3_errcode()]
; or [sqlite3_errmsg()]. The underlying xFileControl method might
; also return SQLITE_ERROR. There is no way to distinguish between
; an incorrect zDbName and an SQLITE_ERROR return from the underlying
; xFileControl method.
;
; See also: [SQLITE_FCNTL_LOCKSTATE]
;@@ int sqlite3_file_control(sqlite3*, const char *zDbName, int op, void*);
sqlite3_file_control: "sqlite3_file_control" [
arg1 [sqlite3!] ;sqlite3*
zDbName [c-string!] ;const char *
op [integer!] ;int
arg4 [int-ptr!] ;void*
return: [integer!]
]
;- Testing Interface
;
; ^The sqlite3_test_control() interface is used to read out internal
; state of SQLite and to inject faults into SQLite for testing
; purposes. ^The first parameter is an operation code that determines
; the number, meaning, and operation of all subsequent parameters.
;
; This interface is not for use by applications. It exists solely
; for verifying the correct operation of the SQLite library. Depending
; on how the SQLite library is compiled, this interface might not exist.
;
; The details of the operation codes, their meanings, the parameters
; they take, and what they do are all subject to change without notice.
; Unlike most of the SQLite API, this function is not guaranteed to
; operate consistently from one release to the next.
;@@ int sqlite3_test_control(int op, ...);
sqlite3_test_control: "sqlite3_test_control" [[variadic]
return: [integer!]
]
;- SQLite Runtime Status
;
; ^These interfaces are used to retrieve runtime status information
; about the performance of SQLite, and optionally to reset various
; highwater marks. ^The first argument is an integer code for
; the specific parameter to measure. ^(Recognized integer codes
; are of the form [status parameters | SQLITE_STATUS_...].)^
; ^The current value of the parameter is returned into *pCurrent.
; ^The highest recorded value is returned in *pHighwater. ^If the
; resetFlag is true, then the highest record value is reset after
; *pHighwater is written. ^(Some parameters do not record the highest
; value. For those parameters
; nothing is written into *pHighwater and the resetFlag is ignored.)^
; ^(Other parameters record only the highwater mark and not the current
; value. For these latter parameters nothing is written into *pCurrent.)^
;
; ^The sqlite3_status() and sqlite3_status64() routines return
; SQLITE_OK on success and a non-zero [error code] on failure.
;
; If either the current value or the highwater mark is too large to
; be represented by a 32-bit integer, then the values returned by
; sqlite3_status() are undefined.
;
; See also: [sqlite3_db_status()]
;@@ int sqlite3_status(int op, int *pCurrent, int *pHighwater, int resetFlag);
sqlite3_status: "sqlite3_status" [
op [integer!] ;int
pCurrent [int-ptr!] ;int *
pHighwater [int-ptr!] ;int *
resetFlag [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_status64(
;@@ int op,
;@@ sqlite3_int64 *pCurrent,
;@@ sqlite3_int64 *pHighwater,
;@@ int resetFlag
;@@);
sqlite3_status64: "sqlite3_status64" [
op [integer!] ;int
pCurrent [long-long-ptr!] ;sqlite3_int64 *
pHighwater [long-long-ptr!] ;sqlite3_int64 *
resetFlag [integer!] ;int
return: [integer!]
]
;- Database Connection Status
; METHOD: sqlite3
;
; ^This interface is used to retrieve runtime status information
; about a single [database connection]. ^The first argument is the
; database connection object to be interrogated. ^The second argument
; is an integer constant, taken from the set of
; [SQLITE_DBSTATUS options], that
; determines the parameter to interrogate. The set of
; [SQLITE_DBSTATUS options] is likely
; to grow in future releases of SQLite.
;
; ^The current value of the requested parameter is written into *pCur
; and the highest instantaneous value is written into *pHiwtr. ^If
; the resetFlg is true, then the highest instantaneous value is
; reset back down to the current value.
;
; ^The sqlite3_db_status() routine returns SQLITE_OK on success and a
; non-zero [error code] on failure.
;
; See also: [sqlite3_status()] and [sqlite3_stmt_status()].
;@@ int sqlite3_db_status(sqlite3*, int op, int *pCur, int *pHiwtr, int resetFlg);
sqlite3_db_status: "sqlite3_db_status" [
arg1 [sqlite3!] ;sqlite3*
op [integer!] ;int
pCur [int-ptr!] ;int *
pHiwtr [int-ptr!] ;int *
resetFlg [integer!] ;int
return: [integer!]
]
;- Prepared Statement Status
; METHOD: sqlite3_stmt
;
; ^(Each prepared statement maintains various
; [SQLITE_STMTSTATUS counters] that measure the number
; of times it has performed specific operations.)^ These counters can
; be used to monitor the performance characteristics of the prepared
; statements. For example, if the number of table steps greatly exceeds
; the number of table searches or result rows, that would tend to indicate
; that the prepared statement is using a full table scan rather than
; an index.
;
; ^(This interface is used to retrieve and reset counter values from
; a [prepared statement]. The first argument is the prepared statement
; object to be interrogated. The second argument
; is an integer code for a specific [SQLITE_STMTSTATUS counter]
; to be interrogated.)^
; ^The current value of the requested counter is returned.
; ^If the resetFlg is true, then the counter is reset to zero after this
; interface call returns.
;
; See also: [sqlite3_status()] and [sqlite3_db_status()].
;@@ int sqlite3_stmt_status(sqlite3_stmt*, int op,int resetFlg);
sqlite3_stmt_status: "sqlite3_stmt_status" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
op [integer!] ;int
resetFlg [integer!] ;int
return: [integer!]
]
;- Online Backup API.
;
; The backup API copies the content of one database into another.
; It is useful either for creating backups of databases or
; for copying in-memory databases to or from persistent files.
;
; See Also: [Using the SQLite Online Backup API]
;
; ^SQLite holds a write transaction open on the destination database file
; for the duration of the backup operation.
; ^The source database is read-locked only while it is being read;
; it is not locked continuously for the entire backup operation.
; ^Thus, the backup may be performed on a live source database without
; preventing other database connections from
; reading or writing to the source database while the backup is underway.
;
; ^(To perform a backup operation:
; <ol>
; <li><b>sqlite3_backup_init()</b> is called once to initialize the
; backup,
; <li><b>sqlite3_backup_step()</b> is called one or more times to transfer
; the data between the two databases, and finally
; <li><b>sqlite3_backup_finish()</b> is called to release all resources
; associated with the backup operation.
; </ol>)^
; There should be exactly one call to sqlite3_backup_finish() for each
; successful call to sqlite3_backup_init().
;
; [[sqlite3_backup_init()]] <b>sqlite3_backup_init()</b>
;
; ^The D and N arguments to sqlite3_backup_init(D,N,S,M) are the
; [database connection] associated with the destination database
; and the database name, respectively.
; ^The database name is "main" for the main database, "temp" for the
; temporary database, or the name specified after the AS keyword in
; an [ATTACH] statement for an attached database.
; ^The S and M arguments passed to
; sqlite3_backup_init(D,N,S,M) identify the [database connection]
; and database name of the source database, respectively.
; ^The source and destination [database connections] (parameters S and D)
; must be different or else sqlite3_backup_init(D,N,S,M) will fail with
; an error.
;
; ^A call to sqlite3_backup_init() will fail, returning NULL, if
; there is already a read or read-write transaction open on the
; destination database.
;
; ^If an error occurs within sqlite3_backup_init(D,N,S,M), then NULL is
; returned and an error code and error message are stored in the
; destination [database connection] D.
; ^The error code and message for the failed call to sqlite3_backup_init()
; can be retrieved using the [sqlite3_errcode()], [sqlite3_errmsg()], and/or
; [sqlite3_errmsg16()] functions.
; ^A successful call to sqlite3_backup_init() returns a pointer to an
; [sqlite3_backup] object.
; ^The [sqlite3_backup] object may be used with the sqlite3_backup_step() and
; sqlite3_backup_finish() functions to perform the specified backup
; operation.
;
; [[sqlite3_backup_step()]] <b>sqlite3_backup_step()</b>
;
; ^Function sqlite3_backup_step(B,N) will copy up to N pages between
; the source and destination databases specified by [sqlite3_backup] object B.
; ^If N is negative, all remaining source pages are copied.
; ^If sqlite3_backup_step(B,N) successfully copies N pages and there
; are still more pages to be copied, then the function returns [SQLITE_OK].
; ^If sqlite3_backup_step(B,N) successfully finishes copying all pages
; from source to destination, then it returns [SQLITE_DONE].
; ^If an error occurs while running sqlite3_backup_step(B,N),
; then an [error code] is returned. ^As well as [SQLITE_OK] and
; [SQLITE_DONE], a call to sqlite3_backup_step() may return [SQLITE_READONLY],
; [SQLITE_NOMEM], [SQLITE_BUSY], [SQLITE_LOCKED], or an
; [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX] extended error code.
;
; ^(The sqlite3_backup_step() might return [SQLITE_READONLY] if
; <ol>
; <li> the destination database was opened read-only, or
; <li> the destination database is using write-ahead-log journaling
; and the destination and source page sizes differ, or
; <li> the destination database is an in-memory database and the
; destination and source page sizes differ.
; </ol>)^
;
; ^If sqlite3_backup_step() cannot obtain a required file-system lock, then
; the [sqlite3_busy_handler | busy-handler function]
; is invoked (if one is specified). ^If the
; busy-handler returns non-zero before the lock is available, then
; [SQLITE_BUSY] is returned to the caller. ^In this case the call to
; sqlite3_backup_step() can be retried later. ^If the source
; [database connection]
; is being used to write to the source database when sqlite3_backup_step()
; is called, then [SQLITE_LOCKED] is returned immediately. ^Again, in this
; case the call to sqlite3_backup_step() can be retried later on. ^(If
; [SQLITE_IOERR_ACCESS | SQLITE_IOERR_XXX], [SQLITE_NOMEM], or
; [SQLITE_READONLY] is returned, then
; there is no point in retrying the call to sqlite3_backup_step(). These
; errors are considered fatal.)^ The application must accept
; that the backup operation has failed and pass the backup operation handle
; to the sqlite3_backup_finish() to release associated resources.
;
; ^The first call to sqlite3_backup_step() obtains an exclusive lock
; on the destination file. ^The exclusive lock is not released until either
; sqlite3_backup_finish() is called or the backup operation is complete
; and sqlite3_backup_step() returns [SQLITE_DONE]. ^Every call to
; sqlite3_backup_step() obtains a [shared lock] on the source database that
; lasts for the duration of the sqlite3_backup_step() call.
; ^Because the source database is not locked between calls to
; sqlite3_backup_step(), the source database may be modified mid-way
; through the backup process. ^If the source database is modified by an
; external process or via a database connection other than the one being
; used by the backup operation, then the backup will be automatically
; restarted by the next call to sqlite3_backup_step(). ^If the source
; database is modified by the using the same database connection as is used
; by the backup operation, then the backup database is automatically
; updated at the same time.
;
; [[sqlite3_backup_finish()]] <b>sqlite3_backup_finish()</b>
;
; When sqlite3_backup_step() has returned [SQLITE_DONE], or when the
; application wishes to abandon the backup operation, the application
; should destroy the [sqlite3_backup] by passing it to sqlite3_backup_finish().
; ^The sqlite3_backup_finish() interfaces releases all
; resources associated with the [sqlite3_backup] object.
; ^If sqlite3_backup_step() has not yet returned [SQLITE_DONE], then any
; active write-transaction on the destination database is rolled back.
; The [sqlite3_backup] object is invalid
; and may not be used following a call to sqlite3_backup_finish().
;
; ^The value returned by sqlite3_backup_finish is [SQLITE_OK] if no
; sqlite3_backup_step() errors occurred, regardless or whether or not
; sqlite3_backup_step() completed.
; ^If an out-of-memory condition or IO error occurred during any prior
; sqlite3_backup_step() call on the same [sqlite3_backup] object, then
; sqlite3_backup_finish() returns the corresponding [error code].
;
; ^A return of [SQLITE_BUSY] or [SQLITE_LOCKED] from sqlite3_backup_step()
; is not a permanent error and does not affect the return value of
; sqlite3_backup_finish().
;
; [[sqlite3_backup_remaining()]] [[sqlite3_backup_pagecount()]]
; <b>sqlite3_backup_remaining() and sqlite3_backup_pagecount()</b>
;
; ^The sqlite3_backup_remaining() routine returns the number of pages still
; to be backed up at the conclusion of the most recent sqlite3_backup_step().
; ^The sqlite3_backup_pagecount() routine returns the total number of pages
; in the source database at the conclusion of the most recent
; sqlite3_backup_step().
; ^(The values returned by these functions are only updated by
; sqlite3_backup_step(). If the source database is modified in a way that
; changes the size of the source database or the number of pages remaining,
; those changes are not reflected in the output of sqlite3_backup_pagecount()
; and sqlite3_backup_remaining() until after the next
; sqlite3_backup_step().)^
;
; <b>Concurrent Usage of Database Handles</b>
;
; ^The source [database connection] may be used by the application for other
; purposes while a backup operation is underway or being initialized.
; ^If SQLite is compiled and configured to support threadsafe database
; connections, then the source database connection may be used concurrently
; from within other threads.
;
; However, the application must guarantee that the destination
; [database connection] is not passed to any other API (by any thread) after
; sqlite3_backup_init() is called and before the corresponding call to
; sqlite3_backup_finish(). SQLite does not currently check to see
; if the application incorrectly accesses the destination [database connection]
; and so no error code is reported, but the operations may malfunction
; nevertheless. Use of the destination database connection while a
; backup is in progress might also also cause a mutex deadlock.
;
; If running in [shared cache mode], the application must
; guarantee that the shared cache used by the destination database
; is not accessed while the backup is running. In practice this means
; that the application must guarantee that the disk file being
; backed up to is not accessed by any connection within the process,
; not just the specific connection that was passed to sqlite3_backup_init().
;
; The [sqlite3_backup] object itself is partially threadsafe. Multiple
; threads may safely make multiple concurrent calls to sqlite3_backup_step().
; However, the sqlite3_backup_remaining() and sqlite3_backup_pagecount()
; APIs are not strictly speaking threadsafe. If they are invoked at the
; same time as another thread is invoking sqlite3_backup_step() it is
; possible that they return invalid values.
;@@ sqlite3_backup * sqlite3_backup_init(
;@@ sqlite3 *pDest, /* Destination database handle */
;@@ const char *zDestName, /* Destination database name */
;@@ sqlite3 *pSource, /* Source database handle */
;@@ const char *zSourceName /* Source database name */
;@@);
sqlite3_backup_init: "sqlite3_backup_init" [
pDest [sqlite3!] ; Destination database handle
zDestName [c-string!] ; Destination database name
pSource [sqlite3!] ; Source database handle
zSourceName [c-string!] ; Source database name
return: [sqlite3-backup!]
]
;@@ int sqlite3_backup_step(sqlite3_backup *p, int nPage);
sqlite3_backup_step: "sqlite3_backup_step" [
p [sqlite3-backup!] ;sqlite3_backup *
nPage [integer!] ;int
return: [integer!]
]
;@@ int sqlite3_backup_finish(sqlite3_backup *p);
sqlite3_backup_finish: "sqlite3_backup_finish" [
p [sqlite3-backup!] ;sqlite3_backup *
return: [integer!]
]
;@@ int sqlite3_backup_remaining(sqlite3_backup *p);
sqlite3_backup_remaining: "sqlite3_backup_remaining" [
p [sqlite3-backup!] ;sqlite3_backup *
return: [integer!]
]
;@@ int sqlite3_backup_pagecount(sqlite3_backup *p);
sqlite3_backup_pagecount: "sqlite3_backup_pagecount" [
p [sqlite3-backup!] ;sqlite3_backup *
return: [integer!]
]
;- Unlock Notification
; METHOD: sqlite3
;
; ^When running in shared-cache mode, a database operation may fail with
; an [SQLITE_LOCKED] error if the required locks on the shared-cache or
; individual tables within the shared-cache cannot be obtained. See
; [SQLite Shared-Cache Mode] for a description of shared-cache locking.
; ^This API may be used to register a callback that SQLite will invoke
; when the connection currently holding the required lock relinquishes it.
; ^This API is only available if the library was compiled with the
; [SQLITE_ENABLE_UNLOCK_NOTIFY] C-preprocessor symbol defined.
;
; See Also: [Using the SQLite Unlock Notification Feature].
;
; ^Shared-cache locks are released when a database connection concludes
; its current transaction, either by committing it or rolling it back.
;
; ^When a connection (known as the blocked connection) fails to obtain a
; shared-cache lock and SQLITE_LOCKED is returned to the caller, the
; identity of the database connection (the blocking connection) that
; has locked the required resource is stored internally. ^After an
; application receives an SQLITE_LOCKED error, it may call the
; sqlite3_unlock_notify() method with the blocked connection handle as
; the first argument to register for a callback that will be invoked
; when the blocking connections current transaction is concluded. ^The
; callback is invoked from within the [sqlite3_step] or [sqlite3_close]
; call that concludes the blocking connections transaction.
;
; ^(If sqlite3_unlock_notify() is called in a multi-threaded application,
; there is a chance that the blocking connection will have already
; concluded its transaction by the time sqlite3_unlock_notify() is invoked.
; If this happens, then the specified callback is invoked immediately,
; from within the call to sqlite3_unlock_notify().)^
;
; ^If the blocked connection is attempting to obtain a write-lock on a
; shared-cache table, and more than one other connection currently holds
; a read-lock on the same table, then SQLite arbitrarily selects one of
; the other connections to use as the blocking connection.
;
; ^(There may be at most one unlock-notify callback registered by a
; blocked connection. If sqlite3_unlock_notify() is called when the
; blocked connection already has a registered unlock-notify callback,
; then the new callback replaces the old.)^ ^If sqlite3_unlock_notify() is
; called with a NULL pointer as its second argument, then any existing
; unlock-notify callback is canceled. ^The blocked connections
; unlock-notify callback may also be canceled by closing the blocked
; connection using [sqlite3_close()].
;
; The unlock-notify callback is not reentrant. If an application invokes
; any sqlite3_xxx API functions from within an unlock-notify callback, a
; crash or deadlock may be the result.
;
; ^Unless deadlock is detected (see below), sqlite3_unlock_notify() always
; returns SQLITE_OK.
;
; <b>Callback Invocation Details</b>
;
; When an unlock-notify callback is registered, the application provides a
; single void* pointer that is passed to the callback when it is invoked.
; However, the signature of the callback function allows SQLite to pass
; it an array of void* context pointers. The first argument passed to
; an unlock-notify callback is a pointer to an array of void* pointers,
; and the second is the number of entries in the array.
;
; When a blocking connections transaction is concluded, there may be
; more than one blocked connection that has registered for an unlock-notify
; callback. ^If two or more such blocked connections have specified the
; same callback function, then instead of invoking the callback function
; multiple times, it is invoked once with the set of void* context pointers
; specified by the blocked connections bundled together into an array.
; This gives the application an opportunity to prioritize any actions
; related to the set of unblocked database connections.
;
; <b>Deadlock Detection</b>
;
; Assuming that after registering for an unlock-notify callback a
; database waits for the callback to be issued before taking any further
; action (a reasonable assumption), then using this API may cause the
; application to deadlock. For example, if connection X is waiting for
; connection Y's transaction to be concluded, and similarly connection
; Y is waiting on connection X's transaction, then neither connection
; will proceed and the system may remain deadlocked indefinitely.
;
; To avoid this scenario, the sqlite3_unlock_notify() performs deadlock
; detection. ^If a given call to sqlite3_unlock_notify() would put the
; system in a deadlocked state, then SQLITE_LOCKED is returned and no
; unlock-notify callback is registered. The system is said to be in
; a deadlocked state if connection A has registered for an unlock-notify
; callback on the conclusion of connection B's transaction, and connection
; B has itself registered for an unlock-notify callback when connection
; A's transaction is concluded. ^Indirect deadlock is also detected, so
; the system is also considered to be deadlocked if connection B has
; registered for an unlock-notify callback on the conclusion of connection
; C's transaction, where connection C is waiting on connection A. ^Any
; number of levels of indirection are allowed.
;
; <b>The "DROP TABLE" Exception</b>
;
; When a call to [sqlite3_step()] returns SQLITE_LOCKED, it is almost
; always appropriate to call sqlite3_unlock_notify(). There is however,
; one exception. When executing a "DROP TABLE" or "DROP INDEX" statement,
; SQLite checks if there are any currently executing SELECT statements
; that belong to the same connection. If there are, SQLITE_LOCKED is
; returned. In this case there is no "blocking connection", so invoking
; sqlite3_unlock_notify() results in the unlock-notify callback being
; invoked immediately. If the application then re-attempts the "DROP TABLE"
; or "DROP INDEX" query, an infinite loop might be the result.
;
; One way around this problem is to check the extended error code returned
; by an sqlite3_step() call. ^(If there is a blocking connection, then the
; extended error code is set to SQLITE_LOCKED_SHAREDCACHE. Otherwise, in
; the special "DROP TABLE/INDEX" case, the extended error code is just
; SQLITE_LOCKED.)^
;@@ int sqlite3_unlock_notify(
;@@ sqlite3 *pBlocked, /* Waiting connection */
;@@ void (*xNotify)(void **apArg, int nArg), /* Callback function to invoke */
;@@ void *pNotifyArg /* Argument to pass to xNotify */
;@@);
sqlite3_unlock_notify: "sqlite3_unlock_notify" [
pBlocked [sqlite3!] ; Waiting connection
xNotify [function! [
apArg [int-ptr!]
nArg [integer!]
]]
pNotifyArg [int-ptr!] ; Argument to pass to xNotify
return: [integer!]
]
;- String Comparison
;
; ^The [sqlite3_stricmp()] and [sqlite3_strnicmp()] APIs allow applications
; and extensions to compare the contents of two buffers containing UTF-8
; strings in a case-independent fashion, using the same definition of "case
; independence" that SQLite uses internally when comparing identifiers.
;@@ int sqlite3_stricmp(const char *, const char *);
sqlite3_stricmp: "sqlite3_stricmp" [
arg1 [c-string!] ;const char *
arg2 [c-string!] ;const char *
return: [integer!]
]
;@@ int sqlite3_strnicmp(const char *, const char *, int);
sqlite3_strnicmp: "sqlite3_strnicmp" [
arg1 [c-string!] ;const char *
arg2 [c-string!] ;const char *
arg3 [integer!] ;int
return: [integer!]
]
;- String Globbing
;
; ^The [sqlite3_strglob(P,X)] interface returns zero if and only if
; string X matches the [GLOB] pattern P.
; ^The definition of [GLOB] pattern matching used in
; [sqlite3_strglob(P,X)] is the same as for the "X GLOB P" operator in the
; SQL dialect understood by SQLite. ^The [sqlite3_strglob(P,X)] function
; is case sensitive.
;
; Note that this routine returns zero on a match and non-zero if the strings
; do not match, the same as [sqlite3_stricmp()] and [sqlite3_strnicmp()].
;
; See also: [sqlite3_strlike()].
;@@ int sqlite3_strglob(const char *zGlob, const char *zStr);
sqlite3_strglob: "sqlite3_strglob" [
zGlob [c-string!] ;const char *
zStr [c-string!] ;const char *
return: [integer!]
]
;- String LIKE Matching
;
; ^The [sqlite3_strlike(P,X,E)] interface returns zero if and only if
; string X matches the [LIKE] pattern P with escape character E.
; ^The definition of [LIKE] pattern matching used in
; [sqlite3_strlike(P,X,E)] is the same as for the "X LIKE P ESCAPE E"
; operator in the SQL dialect understood by SQLite. ^For "X LIKE P" without
; the ESCAPE clause, set the E parameter of [sqlite3_strlike(P,X,E)] to 0.
; ^As with the LIKE operator, the [sqlite3_strlike(P,X,E)] function is case
; insensitive - equivalent upper and lower case ASCII characters match
; one another.
;
; ^The [sqlite3_strlike(P,X,E)] function matches Unicode characters, though
; only ASCII characters are case folded.
;
; Note that this routine returns zero on a match and non-zero if the strings
; do not match, the same as [sqlite3_stricmp()] and [sqlite3_strnicmp()].
;
; See also: [sqlite3_strglob()].
;@@ int sqlite3_strlike(const char *zGlob, const char *zStr, unsigned int cEsc);
sqlite3_strlike: "sqlite3_strlike" [
zGlob [c-string!] ;const char *
zStr [c-string!] ;const char *
cEsc [integer!] ;unsigned int
return: [integer!]
]
;- Error Logging Interface
;
; ^The [sqlite3_log()] interface writes a message into the [error log]
; established by the [SQLITE_CONFIG_LOG] option to [sqlite3_config()].
; ^If logging is enabled, the zFormat string and subsequent arguments are
; used with [sqlite3_snprintf()] to generate the final output string.
;
; The sqlite3_log() interface is intended for use by extensions such as
; virtual tables, collating functions, and SQL functions. While there is
; nothing to prevent an application from calling sqlite3_log(), doing so
; is considered bad form.
;
; The zFormat string must not be NULL.
;
; To avoid deadlocks and other threading problems, the sqlite3_log() routine
; will not use dynamically allocated memory. The log message is stored in
; a fixed-length buffer on the stack. If the log message is longer than
; a few hundred characters, it will be truncated to the length of the
; buffer.
;@@ void sqlite3_log(int iErrCode, const char *zFormat, ...);
sqlite3_log: "sqlite3_log" [[variadic]
]
;- Write-Ahead Log Commit Hook
; METHOD: sqlite3
;
; ^The [sqlite3_wal_hook()] function is used to register a callback that
; is invoked each time data is committed to a database in wal mode.
;
; ^(The callback is invoked by SQLite after the commit has taken place and
; the associated write-lock on the database released)^, so the implementation
; may read, write or [checkpoint] the database as required.
;
; ^The first parameter passed to the callback function when it is invoked
; is a copy of the third parameter passed to sqlite3_wal_hook() when
; registering the callback. ^The second is a copy of the database handle.
; ^The third parameter is the name of the database that was written to -
; either "main" or the name of an [ATTACH]-ed database. ^The fourth parameter
; is the number of pages currently in the write-ahead log file,
; including those that were just committed.
;
; The callback function should normally return [SQLITE_OK]. ^If an error
; code is returned, that error will propagate back up through the
; SQLite code base to cause the statement that provoked the callback
; to report an error, though the commit will have still occurred. If the
; callback returns [SQLITE_ROW] or [SQLITE_DONE], or if it returns a value
; that does not correspond to any valid SQLite error code, the results
; are undefined.
;
; A single database handle may have at most a single write-ahead log callback
; registered at one time. ^Calling [sqlite3_wal_hook()] replaces any
; previously registered write-ahead log callback. ^Note that the
; [sqlite3_wal_autocheckpoint()] interface and the
; [wal_autocheckpoint pragma] both invoke [sqlite3_wal_hook()] and will
; overwrite any prior [sqlite3_wal_hook()] settings.
;@@ void * sqlite3_wal_hook(
;@@ sqlite3*,
;@@ int(*)(void *,sqlite3*,const char*,int),
;@@ void*
;@@);
sqlite3_wal_hook: "sqlite3_wal_hook" [
arg1 [sqlite3!] ;sqlite3*
arg2 [function! [
arg1 [int-ptr!]
arg2 [sqlite3!]
arg3 [c-string!]
arg4 [integer!]
return: [integer!]
]]
arg3 [int-ptr!] ;void*
return: [int-ptr!]
]
;- Configure an auto-checkpoint
; METHOD: sqlite3
;
; ^The [sqlite3_wal_autocheckpoint(D,N)] is a wrapper around
; [sqlite3_wal_hook()] that causes any database on [database connection] D
; to automatically [checkpoint]
; after committing a transaction if there are N or
; more frames in the [write-ahead log] file. ^Passing zero or
; a negative value as the nFrame parameter disables automatic
; checkpoints entirely.
;
; ^The callback registered by this function replaces any existing callback
; registered using [sqlite3_wal_hook()]. ^Likewise, registering a callback
; using [sqlite3_wal_hook()] disables the automatic checkpoint mechanism
; configured by this function.
;
; ^The [wal_autocheckpoint pragma] can be used to invoke this interface
; from SQL.
;
; ^Checkpoints initiated by this mechanism are
; [sqlite3_wal_checkpoint_v2|PASSIVE].
;
; ^Every new [database connection] defaults to having the auto-checkpoint
; enabled with a threshold of 1000 or [SQLITE_DEFAULT_WAL_AUTOCHECKPOINT]
; pages. The use of this interface
; is only necessary if the default setting is found to be suboptimal
; for a particular application.
;@@ int sqlite3_wal_autocheckpoint(sqlite3 *db, int N);
sqlite3_wal_autocheckpoint: "sqlite3_wal_autocheckpoint" [
db [sqlite3!] ;sqlite3 *
N [integer!] ;int
return: [integer!]
]
;- Checkpoint a database
; METHOD: sqlite3
;
; ^(The sqlite3_wal_checkpoint(D,X) is equivalent to
; [sqlite3_wal_checkpoint_v2](D,X,[SQLITE_CHECKPOINT_PASSIVE],0,0).)^
;
; In brief, sqlite3_wal_checkpoint(D,X) causes the content in the
; [write-ahead log] for database X on [database connection] D to be
; transferred into the database file and for the write-ahead log to
; be reset. See the [checkpointing] documentation for addition
; information.
;
; This interface used to be the only way to cause a checkpoint to
; occur. But then the newer and more powerful [sqlite3_wal_checkpoint_v2()]
; interface was added. This interface is retained for backwards
; compatibility and as a convenience for applications that need to manually
; start a callback but which do not need the full power (and corresponding
; complication) of [sqlite3_wal_checkpoint_v2()].
;@@ int sqlite3_wal_checkpoint(sqlite3 *db, const char *zDb);
sqlite3_wal_checkpoint: "sqlite3_wal_checkpoint" [
db [sqlite3!] ;sqlite3 *
zDb [c-string!] ;const char *
return: [integer!]
]
;- Checkpoint a database
; METHOD: sqlite3
;
; ^(The sqlite3_wal_checkpoint_v2(D,X,M,L,C) interface runs a checkpoint
; operation on database X of [database connection] D in mode M. Status
; information is written back into integers pointed to by L and C.)^
; ^(The M parameter must be a valid [checkpoint mode]:)^
;
; <dl>
; <dt>SQLITE_CHECKPOINT_PASSIVE<dd>
; ^Checkpoint as many frames as possible without waiting for any database
; readers or writers to finish, then sync the database file if all frames
; in the log were checkpointed. ^The [busy-handler callback]
; is never invoked in the SQLITE_CHECKPOINT_PASSIVE mode.
; ^On the other hand, passive mode might leave the checkpoint unfinished
; if there are concurrent readers or writers.
;
; <dt>SQLITE_CHECKPOINT_FULL<dd>
; ^This mode blocks (it invokes the
; [sqlite3_busy_handler|busy-handler callback]) until there is no
; database writer and all readers are reading from the most recent database
; snapshot. ^It then checkpoints all frames in the log file and syncs the
; database file. ^This mode blocks new database writers while it is pending,
; but new database readers are allowed to continue unimpeded.
;
; <dt>SQLITE_CHECKPOINT_RESTART<dd>
; ^This mode works the same way as SQLITE_CHECKPOINT_FULL with the addition
; that after checkpointing the log file it blocks (calls the
; [busy-handler callback])
; until all readers are reading from the database file only. ^This ensures
; that the next writer will restart the log file from the beginning.
; ^Like SQLITE_CHECKPOINT_FULL, this mode blocks new
; database writer attempts while it is pending, but does not impede readers.
;
; <dt>SQLITE_CHECKPOINT_TRUNCATE<dd>
; ^This mode works the same way as SQLITE_CHECKPOINT_RESTART with the
; addition that it also truncates the log file to zero bytes just prior
; to a successful return.
; </dl>
;
; ^If pnLog is not NULL, then *pnLog is set to the total number of frames in
; the log file or to -1 if the checkpoint could not run because
; of an error or because the database is not in [WAL mode]. ^If pnCkpt is not
; NULL,then *pnCkpt is set to the total number of checkpointed frames in the
; log file (including any that were already checkpointed before the function
; was called) or to -1 if the checkpoint could not run due to an error or
; because the database is not in WAL mode. ^Note that upon successful
; completion of an SQLITE_CHECKPOINT_TRUNCATE, the log file will have been
; truncated to zero bytes and so both *pnLog and *pnCkpt will be set to zero.
;
; ^All calls obtain an exclusive "checkpoint" lock on the database file. ^If
; any other process is running a checkpoint operation at the same time, the
; lock cannot be obtained and SQLITE_BUSY is returned. ^Even if there is a
; busy-handler configured, it will not be invoked in this case.
;
; ^The SQLITE_CHECKPOINT_FULL, RESTART and TRUNCATE modes also obtain the
; exclusive "writer" lock on the database file. ^If the writer lock cannot be
; obtained immediately, and a busy-handler is configured, it is invoked and
; the writer lock retried until either the busy-handler returns 0 or the lock
; is successfully obtained. ^The busy-handler is also invoked while waiting for
; database readers as described above. ^If the busy-handler returns 0 before
; the writer lock is obtained or while waiting for database readers, the
; checkpoint operation proceeds from that point in the same way as
; SQLITE_CHECKPOINT_PASSIVE - checkpointing as many frames as possible
; without blocking any further. ^SQLITE_BUSY is returned in this case.
;
; ^If parameter zDb is NULL or points to a zero length string, then the
; specified operation is attempted on all WAL databases [attached] to
; [database connection] db. In this case the
; values written to output parameters *pnLog and *pnCkpt are undefined. ^If
; an SQLITE_BUSY error is encountered when processing one or more of the
; attached WAL databases, the operation is still attempted on any remaining
; attached databases and SQLITE_BUSY is returned at the end. ^If any other
; error occurs while processing an attached database, processing is abandoned
; and the error code is returned to the caller immediately. ^If no error
; (SQLITE_BUSY or otherwise) is encountered while processing the attached
; databases, SQLITE_OK is returned.
;
; ^If database zDb is the name of an attached database that is not in WAL
; mode, SQLITE_OK is returned and both *pnLog and *pnCkpt set to -1. ^If
; zDb is not NULL (or a zero length string) and is not the name of any
; attached database, SQLITE_ERROR is returned to the caller.
;
; ^Unless it returns SQLITE_MISUSE,
; the sqlite3_wal_checkpoint_v2() interface
; sets the error information that is queried by
; [sqlite3_errcode()] and [sqlite3_errmsg()].
;
; ^The [PRAGMA wal_checkpoint] command can be used to invoke this interface
; from SQL.
;@@ int sqlite3_wal_checkpoint_v2(
;@@ sqlite3 *db, /* Database handle */
;@@ const char *zDb, /* Name of attached database (or NULL) */
;@@ int eMode, /* SQLITE_CHECKPOINT_* value */
;@@ int *pnLog, /* OUT: Size of WAL log in frames */
;@@ int *pnCkpt /* OUT: Total number of frames checkpointed */
;@@);
sqlite3_wal_checkpoint_v2: "sqlite3_wal_checkpoint_v2" [
db [sqlite3!] ; Database handle
zDb [c-string!] ; Name of attached database (or NULL)
eMode [integer!] ; SQLITE_CHECKPOINT_* value
pnLog [int-ptr!] ; OUT: Size of WAL log in frames
pnCkpt [int-ptr!] ; OUT: Total number of frames checkpointed
return: [integer!]
]
;- Virtual Table Interface Configuration
;
; This function may be called by either the [xConnect] or [xCreate] method
; of a [virtual table] implementation to configure
; various facets of the virtual table interface.
;
; If this interface is invoked outside the context of an xConnect or
; xCreate virtual table method then the behavior is undefined.
;
; At present, there is only one option that may be configured using
; this function. (See [SQLITE_VTAB_CONSTRAINT_SUPPORT].) Further options
; may be added in the future.
;@@ int sqlite3_vtab_config(sqlite3*, int op, ...);
sqlite3_vtab_config: "sqlite3_vtab_config" [[variadic]
return: [integer!]
]
;- Determine The Virtual Table Conflict Policy
;
; This function may only be called from within a call to the [xUpdate] method
; of a [virtual table] implementation for an INSERT or UPDATE operation. ^The
; value returned is one of [SQLITE_ROLLBACK], [SQLITE_IGNORE], [SQLITE_FAIL],
; [SQLITE_ABORT], or [SQLITE_REPLACE], according to the [ON CONFLICT] mode
; of the SQL statement that triggered the call to the [xUpdate] method of the
; [virtual table].
;@@ int sqlite3_vtab_on_conflict(sqlite3 *);
sqlite3_vtab_on_conflict: "sqlite3_vtab_on_conflict" [
arg1 [sqlite3!] ;sqlite3 *
return: [integer!]
]
;- Prepared Statement Scan Status
; METHOD: sqlite3_stmt
;
; This interface returns information about the predicted and measured
; performance for pStmt. Advanced applications can use this
; interface to compare the predicted and the measured performance and
; issue warnings and/or rerun [ANALYZE] if discrepancies are found.
;
; Since this interface is expected to be rarely used, it is only
; available if SQLite is compiled using the [SQLITE_ENABLE_STMT_SCANSTATUS]
; compile-time option.
;
; The "iScanStatusOp" parameter determines which status information to return.
; The "iScanStatusOp" must be one of the [scanstatus options] or the behavior
; of this interface is undefined.
; ^The requested measurement is written into a variable pointed to by
; the "pOut" parameter.
; Parameter "idx" identifies the specific loop to retrieve statistics for.
; Loops are numbered starting from zero. ^If idx is out of range - less than
; zero or greater than or equal to the total number of loops used to implement
; the statement - a non-zero value is returned and the variable that pOut
; points to is unchanged.
;
; ^Statistics might not be available for all loops in all statements. ^In cases
; where there exist loops with no available statistics, this function behaves
; as if the loop did not exist - it returns non-zero and leave the variable
; that pOut points to unchanged.
;
; See also: [sqlite3_stmt_scanstatus_reset()]
;@@ int sqlite3_stmt_scanstatus(
;@@ sqlite3_stmt *pStmt, /* Prepared statement for which info desired */
;@@ int idx, /* Index of loop to report on */
;@@ int iScanStatusOp, /* Information desired. SQLITE_SCANSTAT_* */
;@@ void *pOut /* Result written here */
;@@);
sqlite3_stmt_scanstatus: "sqlite3_stmt_scanstatus" [
pStmt [sqlite3-stmt!] ; Prepared statement for which info desired
idx [integer!] ; Index of loop to report on
iScanStatusOp [integer!] ; Information desired. SQLITE_SCANSTAT_*
pOut [int-ptr!] ; Result written here
return: [integer!]
]
;- Zero Scan-Status Counters
; METHOD: sqlite3_stmt
;
; ^Zero all [sqlite3_stmt_scanstatus()] related event counters.
;
; This API is only available if the library is built with pre-processor
; symbol [SQLITE_ENABLE_STMT_SCANSTATUS] defined.
;@@ void sqlite3_stmt_scanstatus_reset(sqlite3_stmt*);
sqlite3_stmt_scanstatus_reset: "sqlite3_stmt_scanstatus_reset" [
arg1 [sqlite3-stmt!] ;sqlite3_stmt*
]
;- Flush caches to disk mid-transaction
;
; ^If a write-transaction is open on [database connection] D when the
; [sqlite3_db_cacheflush(D)] interface invoked, any dirty
; pages in the pager-cache that are not currently in use are written out
; to disk. A dirty page may be in use if a database cursor created by an
; active SQL statement is reading from it, or if it is page 1 of a database
; file (page 1 is always "in use"). ^The [sqlite3_db_cacheflush(D)]
; interface flushes caches for all schemas - "main", "temp", and
; any [attached] databases.
;
; ^If this function needs to obtain extra database locks before dirty pages
; can be flushed to disk, it does so. ^If those locks cannot be obtained
; immediately and there is a busy-handler callback configured, it is invoked
; in the usual manner. ^If the required lock still cannot be obtained, then
; the database is skipped and an attempt made to flush any dirty pages
; belonging to the next (if any) database. ^If any databases are skipped
; because locks cannot be obtained, but no other error occurs, this
; function returns SQLITE_BUSY.
;
; ^If any other error occurs while flushing dirty pages to disk (for
; example an IO error or out-of-memory condition), then processing is
; abandoned and an SQLite [error code] is returned to the caller immediately.
;
; ^Otherwise, if no error occurs, [sqlite3_db_cacheflush()] returns SQLITE_OK.
;
; ^This function does not set the database handle error code or message
; returned by the [sqlite3_errcode()] and [sqlite3_errmsg()] functions.
;@@ int sqlite3_db_cacheflush(sqlite3*);
sqlite3_db_cacheflush: "sqlite3_db_cacheflush" [
arg1 [sqlite3!] ;sqlite3*
return: [integer!]
]
;- The pre-update hook.
;
; ^These interfaces are only available if SQLite is compiled using the
; [SQLITE_ENABLE_PREUPDATE_HOOK] compile-time option.
;
; ^The [sqlite3_preupdate_hook()] interface registers a callback function
; that is invoked prior to each [INSERT], [UPDATE], and [DELETE] operation
; on a database table.
; ^At most one preupdate hook may be registered at a time on a single
; [database connection]; each call to [sqlite3_preupdate_hook()] overrides
; the previous setting.
; ^The preupdate hook is disabled by invoking [sqlite3_preupdate_hook()]
; with a NULL pointer as the second parameter.
; ^The third parameter to [sqlite3_preupdate_hook()] is passed through as
; the first parameter to callbacks.
;
; ^The preupdate hook only fires for changes to real database tables; the
; preupdate hook is not invoked for changes to [virtual tables] or to
; system tables like sqlite_master or sqlite_stat1.
;
; ^The second parameter to the preupdate callback is a pointer to
; the [database connection] that registered the preupdate hook.
; ^The third parameter to the preupdate callback is one of the constants
; [SQLITE_INSERT], [SQLITE_DELETE], or [SQLITE_UPDATE] to identify the
; kind of update operation that is about to occur.
; ^(The fourth parameter to the preupdate callback is the name of the
; database within the database connection that is being modified. This
; will be "main" for the main database or "temp" for TEMP tables or
; the name given after the AS keyword in the [ATTACH] statement for attached
; databases.)^
; ^The fifth parameter to the preupdate callback is the name of the
; table that is being modified.
;
; For an UPDATE or DELETE operation on a [rowid table], the sixth
; parameter passed to the preupdate callback is the initial [rowid] of the
; row being modified or deleted. For an INSERT operation on a rowid table,
; or any operation on a WITHOUT ROWID table, the value of the sixth
; parameter is undefined. For an INSERT or UPDATE on a rowid table the
; seventh parameter is the final rowid value of the row being inserted
; or updated. The value of the seventh parameter passed to the callback
; function is not defined for operations on WITHOUT ROWID tables, or for
; INSERT operations on rowid tables.
;
; The [sqlite3_preupdate_old()], [sqlite3_preupdate_new()],
; [sqlite3_preupdate_count()], and [sqlite3_preupdate_depth()] interfaces
; provide additional information about a preupdate event. These routines
; may only be called from within a preupdate callback. Invoking any of
; these routines from outside of a preupdate callback or with a
; [database connection] pointer that is different from the one supplied
; to the preupdate callback results in undefined and probably undesirable
; behavior.
;
; ^The [sqlite3_preupdate_count(D)] interface returns the number of columns
; in the row that is being inserted, updated, or deleted.
;
; ^The [sqlite3_preupdate_old(D,N,P)] interface writes into P a pointer to
; a [protected sqlite3_value] that contains the value of the Nth column of
; the table row before it is updated. The N parameter must be between 0
; and one less than the number of columns or the behavior will be
; undefined. This must only be used within SQLITE_UPDATE and SQLITE_DELETE
; preupdate callbacks; if it is used by an SQLITE_INSERT callback then the
; behavior is undefined. The [sqlite3_value] that P points to
; will be destroyed when the preupdate callback returns.
;
; ^The [sqlite3_preupdate_new(D,N,P)] interface writes into P a pointer to
; a [protected sqlite3_value] that contains the value of the Nth column of
; the table row after it is updated. The N parameter must be between 0
; and one less than the number of columns or the behavior will be
; undefined. This must only be used within SQLITE_INSERT and SQLITE_UPDATE
; preupdate callbacks; if it is used by an SQLITE_DELETE callback then the
; behavior is undefined. The [sqlite3_value] that P points to
; will be destroyed when the preupdate callback returns.
;
; ^The [sqlite3_preupdate_depth(D)] interface returns 0 if the preupdate
; callback was invoked as a result of a direct insert, update, or delete
; operation; or 1 for inserts, updates, or deletes invoked by top-level
; triggers; or 2 for changes resulting from triggers called by top-level
; triggers; and so forth.
;
; See also: [sqlite3_update_hook()]
;@@ void * sqlite3_preupdate_hook(
;@@ sqlite3 *db,
;@@ void(*xPreUpdate)(
;@@ void *pCtx, /* Copy of third arg to preupdate_hook() */
;@@ sqlite3 *db, /* Database handle */
;@@ int op, /* SQLITE_UPDATE, DELETE or INSERT */
;@@ char const *zDb, /* Database name */
;@@ char const *zName, /* Table name */
;@@ sqlite3_int64 iKey1, /* Rowid of row about to be deleted/updated */
;@@ sqlite3_int64 iKey2 /* New rowid value (for a rowid UPDATE) */
;@@ ),
;@@ void*
;@@);
sqlite3_preupdate_hook: "sqlite3_preupdate_hook" [
db [sqlite3!] ;sqlite3 *
xPreUpdate [function! [
pCtx [int-ptr!] ; Copy of third arg to preupdate_hook()
db [sqlite3!] ; Database handle
op [integer!] ; SQLITE_UPDATE, DELETE or INSERT
zDb [c-string!] ; Database name
zName [c-string!] ; Table name
iKey1 [long-long!] ; Rowid of row about to be deleted/updated
iKey2 [long-long!] ; New rowid value (for a rowid UPDATE)
]]
arg3 [int-ptr!] ;void*
return: [int-ptr!]
]
;@@ int sqlite3_preupdate_old(sqlite3 *, int, sqlite3_value **);
sqlite3_preupdate_old: "sqlite3_preupdate_old" [
arg1 [sqlite3!] ;sqlite3 *
arg2 [integer!] ;int
arg3 [sqlite3-value-ref!] ;sqlite3_value **
return: [integer!]
]
;@@ int sqlite3_preupdate_count(sqlite3 *);
sqlite3_preupdate_count: "sqlite3_preupdate_count" [
arg1 [sqlite3!] ;sqlite3 *
return: [integer!]
]
;@@ int sqlite3_preupdate_depth(sqlite3 *);
sqlite3_preupdate_depth: "sqlite3_preupdate_depth" [
arg1 [sqlite3!] ;sqlite3 *
return: [integer!]
]
;@@ int sqlite3_preupdate_new(sqlite3 *, int, sqlite3_value **);
sqlite3_preupdate_new: "sqlite3_preupdate_new" [
arg1 [sqlite3!] ;sqlite3 *
arg2 [integer!] ;int
arg3 [sqlite3-value-ref!] ;sqlite3_value **
return: [integer!]
]
;- Low-level system error code
;
; ^Attempt to return the underlying operating system error code or error
; number that caused the most recent I/O error or failure to open a file.
; The return value is OS-dependent. For example, on unix systems, after
; [sqlite3_open_v2()] returns [SQLITE_CANTOPEN], this interface could be
; called to get back the underlying "errno" that caused the problem, such
; as ENOSPC, EAUTH, EISDIR, and so forth.
;@@ int sqlite3_system_errno(sqlite3*);
sqlite3_system_errno: "sqlite3_system_errno" [
arg1 [sqlite3!] ;sqlite3*
return: [integer!]
]
;- Record A Database Snapshot
; EXPERIMENTAL
;
; ^The [sqlite3_snapshot_get(D,S,P)] interface attempts to make a
; new [sqlite3_snapshot] object that records the current state of
; schema S in database connection D. ^On success, the
; [sqlite3_snapshot_get(D,S,P)] interface writes a pointer to the newly
; created [sqlite3_snapshot] object into *P and returns SQLITE_OK.
; If there is not already a read-transaction open on schema S when
; this function is called, one is opened automatically.
;
; The following must be true for this function to succeed. If any of
; the following statements are false when sqlite3_snapshot_get() is
; called, SQLITE_ERROR is returned. The final value of *P is undefined
; in this case.
;
; <ul>
; <li> The database handle must be in [autocommit mode].
;
; <li> Schema S of [database connection] D must be a [WAL mode] database.
;
; <li> There must not be a write transaction open on schema S of database
; connection D.
;
; <li> One or more transactions must have been written to the current wal
; file since it was created on disk (by any connection). This means
; that a snapshot cannot be taken on a wal mode database with no wal
; file immediately after it is first opened. At least one transaction
; must be written to it first.
; </ul>
;
; This function may also return SQLITE_NOMEM. If it is called with the
; database handle in autocommit mode but fails for some other reason,
; whether or not a read transaction is opened on schema S is undefined.
;
; The [sqlite3_snapshot] object returned from a successful call to
; [sqlite3_snapshot_get()] must be freed using [sqlite3_snapshot_free()]
; to avoid a memory leak.
;
; The [sqlite3_snapshot_get()] interface is only available when the
; SQLITE_ENABLE_SNAPSHOT compile-time option is used.
;@@ int sqlite3_snapshot_get(
;@@ sqlite3 *db,
;@@ const char *zSchema,
;@@ sqlite3_snapshot **ppSnapshot
;@@);
sqlite3_snapshot_get: "sqlite3_snapshot_get" [
db [sqlite3!] ;sqlite3 *
zSchema [c-string!] ;const char *
ppSnapshot [sqlite3-snapshot-ref!] ;sqlite3_snapshot **
return: [integer!]
]
;- Start a read transaction on an historical snapshot
; EXPERIMENTAL
;
; ^The [sqlite3_snapshot_open(D,S,P)] interface starts a
; read transaction for schema S of
; [database connection] D such that the read transaction
; refers to historical [snapshot] P, rather than the most
; recent change to the database.
; ^The [sqlite3_snapshot_open()] interface returns SQLITE_OK on success
; or an appropriate [error code] if it fails.
;
; ^In order to succeed, a call to [sqlite3_snapshot_open(D,S,P)] must be
; the first operation following the [BEGIN] that takes the schema S
; out of [autocommit mode].
; ^In other words, schema S must not currently be in
; a transaction for [sqlite3_snapshot_open(D,S,P)] to work, but the
; database connection D must be out of [autocommit mode].
; ^A [snapshot] will fail to open if it has been overwritten by a
; [checkpoint].
; ^(A call to [sqlite3_snapshot_open(D,S,P)] will fail if the
; database connection D does not know that the database file for
; schema S is in [WAL mode]. A database connection might not know
; that the database file is in [WAL mode] if there has been no prior
; I/O on that database connection, or if the database entered [WAL mode]
; after the most recent I/O on the database connection.)^
; (Hint: Run "[PRAGMA application_id]" against a newly opened
; database connection in order to make it ready to use snapshots.)
;
; The [sqlite3_snapshot_open()] interface is only available when the
; SQLITE_ENABLE_SNAPSHOT compile-time option is used.
;@@ int sqlite3_snapshot_open(
;@@ sqlite3 *db,
;@@ const char *zSchema,
;@@ sqlite3_snapshot *pSnapshot
;@@);
sqlite3_snapshot_open: "sqlite3_snapshot_open" [
db [sqlite3!] ;sqlite3 *
zSchema [c-string!] ;const char *
pSnapshot [sqlite3-snapshot!] ;sqlite3_snapshot *
return: [integer!]
]
;- Destroy a snapshot
; EXPERIMENTAL
;
; ^The [sqlite3_snapshot_free(P)] interface destroys [sqlite3_snapshot] P.
; The application must eventually free every [sqlite3_snapshot] object
; using this routine to avoid a memory leak.
;
; The [sqlite3_snapshot_free()] interface is only available when the
; SQLITE_ENABLE_SNAPSHOT compile-time option is used.
;@@ void sqlite3_snapshot_free(sqlite3_snapshot*);
sqlite3_snapshot_free: "sqlite3_snapshot_free" [
arg1 [sqlite3-snapshot!] ;sqlite3_snapshot*
]
;- Compare the ages of two snapshot handles.
; EXPERIMENTAL
;
; The sqlite3_snapshot_cmp(P1, P2) interface is used to compare the ages
; of two valid snapshot handles.
;
; If the two snapshot handles are not associated with the same database
; file, the result of the comparison is undefined.
;
; Additionally, the result of the comparison is only valid if both of the
; snapshot handles were obtained by calling sqlite3_snapshot_get() since the
; last time the wal file was deleted. The wal file is deleted when the
; database is changed back to rollback mode or when the number of database
; clients drops to zero. If either snapshot handle was obtained before the
; wal file was last deleted, the value returned by this function
; is undefined.
;
; Otherwise, this API returns a negative value if P1 refers to an older
; snapshot than P2, zero if the two handles refer to the same database
; snapshot, and a positive value if P1 is a newer snapshot than P2.
;@@ int sqlite3_snapshot_cmp(
;@@ sqlite3_snapshot *p1,
;@@ sqlite3_snapshot *p2
;@@);
sqlite3_snapshot_cmp: "sqlite3_snapshot_cmp" [
p1 [sqlite3-snapshot!] ;sqlite3_snapshot *
p2 [sqlite3-snapshot!] ;sqlite3_snapshot *
return: [integer!]
]
;- Recover snapshots from a wal file
; EXPERIMENTAL
;
; If all connections disconnect from a database file but do not perform
; a checkpoint, the existing wal file is opened along with the database
; file the next time the database is opened. At this point it is only
; possible to successfully call sqlite3_snapshot_open() to open the most
; recent snapshot of the database (the one at the head of the wal file),
; even though the wal file may contain other valid snapshots for which
; clients have sqlite3_snapshot handles.
;
; This function attempts to scan the wal file associated with database zDb
; of database handle db and make all valid snapshots available to
; sqlite3_snapshot_open(). It is an error if there is already a read
; transaction open on the database, or if the database is not a wal mode
; database.
;
; SQLITE_OK is returned if successful, or an SQLite error code otherwise.
;@@ int sqlite3_snapshot_recover(sqlite3 *db, const char *zDb);
sqlite3_snapshot_recover: "sqlite3_snapshot_recover" [
db [sqlite3!] ;sqlite3 *
zDb [c-string!] ;const char *
return: [integer!]
]
;******* Begin file sqlite3rtree.h ********
; The double-precision datatype used by RTree depends on the
;@@ int sqlite3_rtree_geometry_callback(
;@@ sqlite3 *db,
;@@ const char *zGeom,
;@@ int (*xGeom)(sqlite3_rtree_geometry*, int, sqlite3_rtree_dbl*,int*),
;@@ void *pContext
;@@);
sqlite3_rtree_geometry_callback: "sqlite3_rtree_geometry_callback" [
db [sqlite3!] ;sqlite3 *
zGeom [c-string!] ;const char *
xGeom [function! [
arg1 [sqlite3-rtree-geometry!]
arg2 [integer!]
arg3 [sqlite3-rtree-dbl!]
arg4 [int-ptr!]
return: [integer!]
]]
pContext [int-ptr!] ;void *
return: [integer!]
]
;@@ int sqlite3_rtree_query_callback(
;@@ sqlite3 *db,
;@@ const char *zQueryFunc,
;@@ int (*xQueryFunc)(sqlite3_rtree_query_info*),
;@@ void *pContext,
;@@ void (*xDestructor)(void*)
;@@);
sqlite3_rtree_query_callback: "sqlite3_rtree_query_callback" [
db [sqlite3!] ;sqlite3 *
zQueryFunc [c-string!] ;const char *
xQueryFunc [function! [
arg1 [sqlite3-rtree-query-info!]
return: [integer!]
]]
pContext [int-ptr!] ;void *
xDestructor [function! [
arg1 [int-ptr!]
]]
return: [integer!]
]
;- Create A New Session Object
;
; Create a new session object attached to database handle db. If successful,
; a pointer to the new object is written to *ppSession and SQLITE_OK is
; returned. If an error occurs, *ppSession is set to NULL and an SQLite
; error code (e.g. SQLITE_NOMEM) is returned.
;
; It is possible to create multiple session objects attached to a single
; database handle.
;
; Session objects created using this function should be deleted using the
; [sqlite3session_delete()] function before the database handle that they
; are attached to is itself closed. If the database handle is closed before
; the session object is deleted, then the results of calling any session
; module function, including [sqlite3session_delete()] on the session object
; are undefined.
;
; Because the session module uses the [sqlite3_preupdate_hook()] API, it
; is not possible for an application to register a pre-update hook on a
; database handle that has one or more session objects attached. Nor is
; it possible to create a session object attached to a database handle for
; which a pre-update hook is already defined. The results of attempting
; either of these things are undefined.
;
; The session object will be used to create changesets for tables in
; database zDb, where zDb is either "main", or "temp", or the name of an
; attached database. It is not an error if database zDb is not attached
; to the database when the session object is created.
;@@ int sqlite3session_create(
;@@ sqlite3 *db, /* Database handle */
;@@ const char *zDb, /* Name of db (e.g. "main") */
;@@ sqlite3_session **ppSession /* OUT: New session object */
;@@);
sqlite3session_create: "sqlite3session_create" [
db [sqlite3!] ; Database handle
zDb [c-string!] ; Name of db (e.g. "main")
ppSession [sqlite3-session-ref!] ; OUT: New session object
return: [integer!]
]
;- Delete A Session Object
;
; Delete a session object previously allocated using
; [sqlite3session_create()]. Once a session object has been deleted, the
; results of attempting to use pSession with any other session module
; function are undefined.
;
; Session objects must be deleted before the database handle to which they
; are attached is closed. Refer to the documentation for
; [sqlite3session_create()] for details.
;@@ void sqlite3session_delete(sqlite3_session *pSession);
sqlite3session_delete: "sqlite3session_delete" [
pSession [sqlite3-session!] ;sqlite3_session *
]
;- Enable Or Disable A Session Object
;
; Enable or disable the recording of changes by a session object. When
; enabled, a session object records changes made to the database. When
; disabled - it does not. A newly created session object is enabled.
; Refer to the documentation for [sqlite3session_changeset()] for further
; details regarding how enabling and disabling a session object affects
; the eventual changesets.
;
; Passing zero to this function disables the session. Passing a value
; greater than zero enables it. Passing a value less than zero is a
; no-op, and may be used to query the current state of the session.
;
; The return value indicates the final state of the session object: 0 if
; the session is disabled, or 1 if it is enabled.
;@@ int sqlite3session_enable(sqlite3_session *pSession, int bEnable);
sqlite3session_enable: "sqlite3session_enable" [
pSession [sqlite3-session!] ;sqlite3_session *
bEnable [integer!] ;int
return: [integer!]
]
;- Set Or Clear the Indirect Change Flag
;
; Each change recorded by a session object is marked as either direct or
; indirect. A change is marked as indirect if either:
;
; <ul>
; <li> The session object "indirect" flag is set when the change is
; made, or
; <li> The change is made by an SQL trigger or foreign key action
; instead of directly as a result of a users SQL statement.
; </ul>
;
; If a single row is affected by more than one operation within a session,
; then the change is considered indirect if all operations meet the criteria
; for an indirect change above, or direct otherwise.
;
; This function is used to set, clear or query the session object indirect
; flag. If the second argument passed to this function is zero, then the
; indirect flag is cleared. If it is greater than zero, the indirect flag
; is set. Passing a value less than zero does not modify the current value
; of the indirect flag, and may be used to query the current state of the
; indirect flag for the specified session object.
;
; The return value indicates the final state of the indirect flag: 0 if
; it is clear, or 1 if it is set.
;@@ int sqlite3session_indirect(sqlite3_session *pSession, int bIndirect);
sqlite3session_indirect: "sqlite3session_indirect" [
pSession [sqlite3-session!] ;sqlite3_session *
bIndirect [integer!] ;int
return: [integer!]
]
;- Attach A Table To A Session Object
;
; If argument zTab is not NULL, then it is the name of a table to attach
; to the session object passed as the first argument. All subsequent changes
; made to the table while the session object is enabled will be recorded. See
; documentation for [sqlite3session_changeset()] for further details.
;
; Or, if argument zTab is NULL, then changes are recorded for all tables
; in the database. If additional tables are added to the database (by
; executing "CREATE TABLE" statements) after this call is made, changes for
; the new tables are also recorded.
;
; Changes can only be recorded for tables that have a PRIMARY KEY explicitly
; defined as part of their CREATE TABLE statement. It does not matter if the
; PRIMARY KEY is an "INTEGER PRIMARY KEY" (rowid alias) or not. The PRIMARY
; KEY may consist of a single column, or may be a composite key.
;
; It is not an error if the named table does not exist in the database. Nor
; is it an error if the named table does not have a PRIMARY KEY. However,
; no changes will be recorded in either of these scenarios.
;
; Changes are not recorded for individual rows that have NULL values stored
; in one or more of their PRIMARY KEY columns.
;
; SQLITE_OK is returned if the call completes without error. Or, if an error
; occurs, an SQLite error code (e.g. SQLITE_NOMEM) is returned.
;@@ int sqlite3session_attach(
;@@ sqlite3_session *pSession, /* Session object */
;@@ const char *zTab /* Table name */
;@@);
sqlite3session_attach: "sqlite3session_attach" [
pSession [sqlite3-session!] ; Session object
zTab [c-string!] ; Table name
return: [integer!]
]
;- Set a table filter on a Session Object.
;
; The second argument (xFilter) is the "filter callback". For changes to rows
; in tables that are not attached to the Session object, the filter is called
; to determine whether changes to the table's rows should be tracked or not.
; If xFilter returns 0, changes is not tracked. Note that once a table is
; attached, xFilter will not be called again.
;@@ void sqlite3session_table_filter(
;@@ sqlite3_session *pSession, /* Session object */
;@@ int(*xFilter)(
;@@ void *pCtx, /* Copy of third arg to _filter_table() */
;@@ const char *zTab /* Table name */
;@@ ),
;@@ void *pCtx /* First argument passed to xFilter */
;@@);
sqlite3session_table_filter: "sqlite3session_table_filter" [
pSession [sqlite3-session!] ; Session object
xFilter [function! [
pCtx [int-ptr!] ; Copy of third arg to _filter_table()
zTab [c-string!] ; Table name
return: [integer!]
]]
pCtx [int-ptr!] ; First argument passed to xFilter
]
;- Generate A Changeset From A Session Object
;
; Obtain a changeset containing changes to the tables attached to the
; session object passed as the first argument. If successful,
; set *ppChangeset to point to a buffer containing the changeset
; and *pnChangeset to the size of the changeset in bytes before returning
; SQLITE_OK. If an error occurs, set both *ppChangeset and *pnChangeset to
; zero and return an SQLite error code.
;
; A changeset consists of zero or more INSERT, UPDATE and/or DELETE changes,
; each representing a change to a single row of an attached table. An INSERT
; change contains the values of each field of a new database row. A DELETE
; contains the original values of each field of a deleted database row. An
; UPDATE change contains the original values of each field of an updated
; database row along with the updated values for each updated non-primary-key
; column. It is not possible for an UPDATE change to represent a change that
; modifies the values of primary key columns. If such a change is made, it
; is represented in a changeset as a DELETE followed by an INSERT.
;
; Changes are not recorded for rows that have NULL values stored in one or
; more of their PRIMARY KEY columns. If such a row is inserted or deleted,
; no corresponding change is present in the changesets returned by this
; function. If an existing row with one or more NULL values stored in
; PRIMARY KEY columns is updated so that all PRIMARY KEY columns are non-NULL,
; only an INSERT is appears in the changeset. Similarly, if an existing row
; with non-NULL PRIMARY KEY values is updated so that one or more of its
; PRIMARY KEY columns are set to NULL, the resulting changeset contains a
; DELETE change only.
;
; The contents of a changeset may be traversed using an iterator created
; using the [sqlite3changeset_start()] API. A changeset may be applied to
; a database with a compatible schema using the [sqlite3changeset_apply()]
; API.
;
; Within a changeset generated by this function, all changes related to a
; single table are grouped together. In other words, when iterating through
; a changeset or when applying a changeset to a database, all changes related
; to a single table are processed before moving on to the next table. Tables
; are sorted in the same order in which they were attached (or auto-attached)
; to the sqlite3_session object. The order in which the changes related to
; a single table are stored is undefined.
;
; Following a successful call to this function, it is the responsibility of
; the caller to eventually free the buffer that *ppChangeset points to using
; [sqlite3_free()].
;
; <h3>Changeset Generation</h3>
;
; Once a table has been attached to a session object, the session object
; records the primary key values of all new rows inserted into the table.
; It also records the original primary key and other column values of any
; deleted or updated rows. For each unique primary key value, data is only
; recorded once - the first time a row with said primary key is inserted,
; updated or deleted in the lifetime of the session.
;
; There is one exception to the previous paragraph: when a row is inserted,
; updated or deleted, if one or more of its primary key columns contain a
; NULL value, no record of the change is made.
;
; The session object therefore accumulates two types of records - those
; that consist of primary key values only (created when the user inserts
; a new record) and those that consist of the primary key values and the
; original values of other table columns (created when the users deletes
; or updates a record).
;
; When this function is called, the requested changeset is created using
; both the accumulated records and the current contents of the database
; file. Specifically:
;
; <ul>
; <li> For each record generated by an insert, the database is queried
; for a row with a matching primary key. If one is found, an INSERT
; change is added to the changeset. If no such row is found, no change
; is added to the changeset.
;
; <li> For each record generated by an update or delete, the database is
; queried for a row with a matching primary key. If such a row is
; found and one or more of the non-primary key fields have been
; modified from their original values, an UPDATE change is added to
; the changeset. Or, if no such row is found in the table, a DELETE
; change is added to the changeset. If there is a row with a matching
; primary key in the database, but all fields contain their original
; values, no change is added to the changeset.
; </ul>
;
; This means, amongst other things, that if a row is inserted and then later
; deleted while a session object is active, neither the insert nor the delete
; will be present in the changeset. Or if a row is deleted and then later a
; row with the same primary key values inserted while a session object is
; active, the resulting changeset will contain an UPDATE change instead of
; a DELETE and an INSERT.
;
; When a session object is disabled (see the [sqlite3session_enable()] API),
; it does not accumulate records when rows are inserted, updated or deleted.
; This may appear to have some counter-intuitive effects if a single row
; is written to more than once during a session. For example, if a row
; is inserted while a session object is enabled, then later deleted while
; the same session object is disabled, no INSERT record will appear in the
; changeset, even though the delete took place while the session was disabled.
; Or, if one field of a row is updated while a session is disabled, and
; another field of the same row is updated while the session is enabled, the
; resulting changeset will contain an UPDATE change that updates both fields.
;@@ int sqlite3session_changeset(
;@@ sqlite3_session *pSession, /* Session object */
;@@ int *pnChangeset, /* OUT: Size of buffer at *ppChangeset */
;@@ void **ppChangeset /* OUT: Buffer containing changeset */
;@@);
sqlite3session_changeset: "sqlite3session_changeset" [
pSession [sqlite3-session!] ; Session object
pnChangeset [int-ptr!] ; OUT: Size of buffer at *ppChangeset
ppChangeset [int-ptr!] ; OUT: Buffer containing changeset
return: [integer!]
]
;- Load The Difference Between Tables Into A Session
;
; If it is not already attached to the session object passed as the first
; argument, this function attaches table zTbl in the same manner as the
; [sqlite3session_attach()] function. If zTbl does not exist, or if it
; does not have a primary key, this function is a no-op (but does not return
; an error).
;
; Argument zFromDb must be the name of a database ("main", "temp" etc.)
; attached to the same database handle as the session object that contains
; a table compatible with the table attached to the session by this function.
; A table is considered compatible if it:
;
; <ul>
; <li> Has the same name,
; <li> Has the same set of columns declared in the same order, and
; <li> Has the same PRIMARY KEY definition.
; </ul>
;
; If the tables are not compatible, SQLITE_SCHEMA is returned. If the tables
; are compatible but do not have any PRIMARY KEY columns, it is not an error
; but no changes are added to the session object. As with other session
; APIs, tables without PRIMARY KEYs are simply ignored.
;
; This function adds a set of changes to the session object that could be
; used to update the table in database zFrom (call this the "from-table")
; so that its content is the same as the table attached to the session
; object (call this the "to-table"). Specifically:
;
; <ul>
; <li> For each row (primary key) that exists in the to-table but not in
; the from-table, an INSERT record is added to the session object.
;
; <li> For each row (primary key) that exists in the to-table but not in
; the from-table, a DELETE record is added to the session object.
;
; <li> For each row (primary key) that exists in both tables, but features
; different non-PK values in each, an UPDATE record is added to the
; session.
; </ul>
;
; To clarify, if this function is called and then a changeset constructed
; using [sqlite3session_changeset()], then after applying that changeset to
; database zFrom the contents of the two compatible tables would be
; identical.
;
; It an error if database zFrom does not exist or does not contain the
; required compatible table.
;
; If the operation successful, SQLITE_OK is returned. Otherwise, an SQLite
; error code. In this case, if argument pzErrMsg is not NULL, *pzErrMsg
; may be set to point to a buffer containing an English language error
; message. It is the responsibility of the caller to free this buffer using
; sqlite3_free().
;@@ int sqlite3session_diff(
;@@ sqlite3_session *pSession,
;@@ const char *zFromDb,
;@@ const char *zTbl,
;@@ char **pzErrMsg
;@@);
sqlite3session_diff: "sqlite3session_diff" [
pSession [sqlite3-session!] ;sqlite3_session *
zFromDb [c-string!] ;const char *
zTbl [c-string!] ;const char *
pzErrMsg [string-ref!] ;char **
return: [integer!]
]
;- Generate A Patchset From A Session Object
;
; The differences between a patchset and a changeset are that:
;
; <ul>
; <li> DELETE records consist of the primary key fields only. The
; original values of other fields are omitted.
; <li> The original values of any modified fields are omitted from
; UPDATE records.
; </ul>
;
; A patchset blob may be used with up to date versions of all
; sqlite3changeset_xxx API functions except for sqlite3changeset_invert(),
; which returns SQLITE_CORRUPT if it is passed a patchset. Similarly,
; attempting to use a patchset blob with old versions of the
; sqlite3changeset_xxx APIs also provokes an SQLITE_CORRUPT error.
;
; Because the non-primary key "old.*" fields are omitted, no
; SQLITE_CHANGESET_DATA conflicts can be detected or reported if a patchset
; is passed to the sqlite3changeset_apply() API. Other conflict types work
; in the same way as for changesets.
;
; Changes within a patchset are ordered in the same way as for changesets
; generated by the sqlite3session_changeset() function (i.e. all changes for
; a single table are grouped together, tables appear in the order in which
; they were attached to the session object).
;@@ int sqlite3session_patchset(
;@@ sqlite3_session *pSession, /* Session object */
;@@ int *pnPatchset, /* OUT: Size of buffer at *ppChangeset */
;@@ void **ppPatchset /* OUT: Buffer containing changeset */
;@@);
sqlite3session_patchset: "sqlite3session_patchset" [
pSession [sqlite3-session!] ; Session object
pnPatchset [int-ptr!] ; OUT: Size of buffer at *ppChangeset
ppPatchset [int-ptr!] ; OUT: Buffer containing changeset
return: [integer!]
]
;- Test if a changeset has recorded any changes.
;
; Return non-zero if no changes to attached tables have been recorded by
; the session object passed as the first argument. Otherwise, if one or
; more changes have been recorded, return zero.
;
; Even if this function returns zero, it is possible that calling
; [sqlite3session_changeset()] on the session handle may still return a
; changeset that contains no changes. This can happen when a row in
; an attached table is modified and then later on the original values
; are restored. However, if this function returns non-zero, then it is
; guaranteed that a call to sqlite3session_changeset() will return a
; changeset containing zero changes.
;@@ int sqlite3session_isempty(sqlite3_session *pSession);
sqlite3session_isempty: "sqlite3session_isempty" [
pSession [sqlite3-session!] ;sqlite3_session *
return: [integer!]
]
;- Create An Iterator To Traverse A Changeset
;
; Create an iterator used to iterate through the contents of a changeset.
; If successful, *pp is set to point to the iterator handle and SQLITE_OK
; is returned. Otherwise, if an error occurs, *pp is set to zero and an
; SQLite error code is returned.
;
; The following functions can be used to advance and query a changeset
; iterator created by this function:
;
; <ul>
; <li> [sqlite3changeset_next()]
; <li> [sqlite3changeset_op()]
; <li> [sqlite3changeset_new()]
; <li> [sqlite3changeset_old()]
; </ul>
;
; It is the responsibility of the caller to eventually destroy the iterator
; by passing it to [sqlite3changeset_finalize()]. The buffer containing the
; changeset (pChangeset) must remain valid until after the iterator is
; destroyed.
;
; Assuming the changeset blob was created by one of the
; [sqlite3session_changeset()], [sqlite3changeset_concat()] or
; [sqlite3changeset_invert()] functions, all changes within the changeset
; that apply to a single table are grouped together. This means that when
; an application iterates through a changeset using an iterator created by
; this function, all changes that relate to a single table are visited
; consecutively. There is no chance that the iterator will visit a change
; the applies to table X, then one for table Y, and then later on visit
; another change for table X.
;@@ int sqlite3changeset_start(
;@@ sqlite3_changeset_iter **pp, /* OUT: New changeset iterator handle */
;@@ int nChangeset, /* Size of changeset blob in bytes */
;@@ void *pChangeset /* Pointer to blob containing changeset */
;@@);
sqlite3changeset_start: "sqlite3changeset_start" [
pp [sqlite3-changeset-iter-ref!]; OUT: New changeset iterator handle
nChangeset [integer!] ; Size of changeset blob in bytes
pChangeset [int-ptr!] ; Pointer to blob containing changeset
return: [integer!]
]
;- Advance A Changeset Iterator
;
; This function may only be used with iterators created by function
; [sqlite3changeset_start()]. If it is called on an iterator passed to
; a conflict-handler callback by [sqlite3changeset_apply()], SQLITE_MISUSE
; is returned and the call has no effect.
;
; Immediately after an iterator is created by sqlite3changeset_start(), it
; does not point to any change in the changeset. Assuming the changeset
; is not empty, the first call to this function advances the iterator to
; point to the first change in the changeset. Each subsequent call advances
; the iterator to point to the next change in the changeset (if any). If
; no error occurs and the iterator points to a valid change after a call
; to sqlite3changeset_next() has advanced it, SQLITE_ROW is returned.
; Otherwise, if all changes in the changeset have already been visited,
; SQLITE_DONE is returned.
;
; If an error occurs, an SQLite error code is returned. Possible error
; codes include SQLITE_CORRUPT (if the changeset buffer is corrupt) or
; SQLITE_NOMEM.
;@@ int sqlite3changeset_next(sqlite3_changeset_iter *pIter);
sqlite3changeset_next: "sqlite3changeset_next" [
pIter [sqlite3-changeset-iter!] ;sqlite3_changeset_iter *
return: [integer!]
]
;- Obtain The Current Operation From A Changeset Iterator
;
; The pIter argument passed to this function may either be an iterator
; passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator
; created by [sqlite3changeset_start()]. In the latter case, the most recent
; call to [sqlite3changeset_next()] must have returned [SQLITE_ROW]. If this
; is not the case, this function returns [SQLITE_MISUSE].
;
; If argument pzTab is not NULL, then *pzTab is set to point to a
; nul-terminated utf-8 encoded string containing the name of the table
; affected by the current change. The buffer remains valid until either
; sqlite3changeset_next() is called on the iterator or until the
; conflict-handler function returns. If pnCol is not NULL, then *pnCol is
; set to the number of columns in the table affected by the change. If
; pbIncorrect is not NULL, then *pbIndirect is set to true (1) if the change
; is an indirect change, or false (0) otherwise. See the documentation for
; [sqlite3session_indirect()] for a description of direct and indirect
; changes. Finally, if pOp is not NULL, then *pOp is set to one of
; [SQLITE_INSERT], [SQLITE_DELETE] or [SQLITE_UPDATE], depending on the
; type of change that the iterator currently points to.
;
; If no error occurs, SQLITE_OK is returned. If an error does occur, an
; SQLite error code is returned. The values of the output variables may not
; be trusted in this case.
;@@ int sqlite3changeset_op(
;@@ sqlite3_changeset_iter *pIter, /* Iterator object */
;@@ const char **pzTab, /* OUT: Pointer to table name */
;@@ int *pnCol, /* OUT: Number of columns in table */
;@@ int *pOp, /* OUT: SQLITE_INSERT, DELETE or UPDATE */
;@@ int *pbIndirect /* OUT: True for an 'indirect' change */
;@@);
sqlite3changeset_op: "sqlite3changeset_op" [
pIter [sqlite3-changeset-iter!]; Iterator object
pzTab [string-ref!] ; OUT: Pointer to table name
pnCol [int-ptr!] ; OUT: Number of columns in table
pOp [int-ptr!] ; OUT: SQLITE_INSERT, DELETE or UPDATE
pbIndirect [int-ptr!] ; OUT: True for an 'indirect' change
return: [integer!]
]
;- Obtain The Primary Key Definition Of A Table
;
; For each modified table, a changeset includes the following:
;
; <ul>
; <li> The number of columns in the table, and
; <li> Which of those columns make up the tables PRIMARY KEY.
; </ul>
;
; This function is used to find which columns comprise the PRIMARY KEY of
; the table modified by the change that iterator pIter currently points to.
; If successful, *pabPK is set to point to an array of nCol entries, where
; nCol is the number of columns in the table. Elements of *pabPK are set to
; 0x01 if the corresponding column is part of the tables primary key, or
; 0x00 if it is not.
;
; If argument pnCol is not NULL, then *pnCol is set to the number of columns
; in the table.
;
; If this function is called when the iterator does not point to a valid
; entry, SQLITE_MISUSE is returned and the output variables zeroed. Otherwise,
; SQLITE_OK is returned and the output variables populated as described
; above.
;@@ int sqlite3changeset_pk(
;@@ sqlite3_changeset_iter *pIter, /* Iterator object */
;@@ unsigned char **pabPK, /* OUT: Array of boolean - true for PK cols */
;@@ int *pnCol /* OUT: Number of entries in output array */
;@@);
sqlite3changeset_pk: "sqlite3changeset_pk" [
pIter [sqlite3-changeset-iter!] ; Iterator object
pabPK [string-ref!] ; OUT: Array of boolean - true for PK cols
pnCol [int-ptr!] ; OUT: Number of entries in output array
return: [integer!]
]
;- Obtain old.* Values From A Changeset Iterator
;
; The pIter argument passed to this function may either be an iterator
; passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator
; created by [sqlite3changeset_start()]. In the latter case, the most recent
; call to [sqlite3changeset_next()] must have returned SQLITE_ROW.
; Furthermore, it may only be called if the type of change that the iterator
; currently points to is either [SQLITE_DELETE] or [SQLITE_UPDATE]. Otherwise,
; this function returns [SQLITE_MISUSE] and sets *ppValue to NULL.
;
; Argument iVal must be greater than or equal to 0, and less than the number
; of columns in the table affected by the current change. Otherwise,
; [SQLITE_RANGE] is returned and *ppValue is set to NULL.
;
; If successful, this function sets *ppValue to point to a protected
; sqlite3_value object containing the iVal'th value from the vector of
; original row values stored as part of the UPDATE or DELETE change and
; returns SQLITE_OK. The name of the function comes from the fact that this
; is similar to the "old.*" columns available to update or delete triggers.
;
; If some other error occurs (e.g. an OOM condition), an SQLite error code
; is returned and *ppValue is set to NULL.
;@@ int sqlite3changeset_old(
;@@ sqlite3_changeset_iter *pIter, /* Changeset iterator */
;@@ int iVal, /* Column number */
;@@ sqlite3_value **ppValue /* OUT: Old value (or NULL pointer) */
;@@);
sqlite3changeset_old: "sqlite3changeset_old" [
pIter [sqlite3-changeset-iter!] ; Changeset iterator
iVal [integer!] ; Column number
ppValue [sqlite3-value-ref!] ; OUT: Old value (or NULL pointer)
return: [integer!]
]
;- Obtain new.* Values From A Changeset Iterator
;
; The pIter argument passed to this function may either be an iterator
; passed to a conflict-handler by [sqlite3changeset_apply()], or an iterator
; created by [sqlite3changeset_start()]. In the latter case, the most recent
; call to [sqlite3changeset_next()] must have returned SQLITE_ROW.
; Furthermore, it may only be called if the type of change that the iterator
; currently points to is either [SQLITE_UPDATE] or [SQLITE_INSERT]. Otherwise,
; this function returns [SQLITE_MISUSE] and sets *ppValue to NULL.
;
; Argument iVal must be greater than or equal to 0, and less than the number
; of columns in the table affected by the current change. Otherwise,
; [SQLITE_RANGE] is returned and *ppValue is set to NULL.
;
; If successful, this function sets *ppValue to point to a protected
; sqlite3_value object containing the iVal'th value from the vector of
; new row values stored as part of the UPDATE or INSERT change and
; returns SQLITE_OK. If the change is an UPDATE and does not include
; a new value for the requested column, *ppValue is set to NULL and
; SQLITE_OK returned. The name of the function comes from the fact that
; this is similar to the "new.*" columns available to update or delete
; triggers.
;
; If some other error occurs (e.g. an OOM condition), an SQLite error code
; is returned and *ppValue is set to NULL.
;@@ int sqlite3changeset_new(
;@@ sqlite3_changeset_iter *pIter, /* Changeset iterator */
;@@ int iVal, /* Column number */
;@@ sqlite3_value **ppValue /* OUT: New value (or NULL pointer) */
;@@);
sqlite3changeset_new: "sqlite3changeset_new" [
pIter [sqlite3-changeset-iter!] ; Changeset iterator
iVal [integer!] ; Column number
ppValue [sqlite3-value-ref!] ; OUT: New value (or NULL pointer)
return: [integer!]
]
;- Obtain Conflicting Row Values From A Changeset Iterator
;
; This function should only be used with iterator objects passed to a
; conflict-handler callback by [sqlite3changeset_apply()] with either
; [SQLITE_CHANGESET_DATA] or [SQLITE_CHANGESET_CONFLICT]. If this function
; is called on any other iterator, [SQLITE_MISUSE] is returned and *ppValue
; is set to NULL.
;
; Argument iVal must be greater than or equal to 0, and less than the number
; of columns in the table affected by the current change. Otherwise,
; [SQLITE_RANGE] is returned and *ppValue is set to NULL.
;
; If successful, this function sets *ppValue to point to a protected
; sqlite3_value object containing the iVal'th value from the
; "conflicting row" associated with the current conflict-handler callback
; and returns SQLITE_OK.
;
; If some other error occurs (e.g. an OOM condition), an SQLite error code
; is returned and *ppValue is set to NULL.
;@@ int sqlite3changeset_conflict(
;@@ sqlite3_changeset_iter *pIter, /* Changeset iterator */
;@@ int iVal, /* Column number */
;@@ sqlite3_value **ppValue /* OUT: Value from conflicting row */
;@@);
sqlite3changeset_conflict: "sqlite3changeset_conflict" [
pIter [sqlite3-changeset-iter!] ; Changeset iterator
iVal [integer!] ; Column number
ppValue [sqlite3-value-ref!] ; OUT: Value from conflicting row
return: [integer!]
]
;- Determine The Number Of Foreign Key Constraint Violations
;
; This function may only be called with an iterator passed to an
; SQLITE_CHANGESET_FOREIGN_KEY conflict handler callback. In this case
; it sets the output variable to the total number of known foreign key
; violations in the destination database and returns SQLITE_OK.
;
; In all other cases this function returns SQLITE_MISUSE.
;@@ int sqlite3changeset_fk_conflicts(
;@@ sqlite3_changeset_iter *pIter, /* Changeset iterator */
;@@ int *pnOut /* OUT: Number of FK violations */
;@@);
sqlite3changeset_fk_conflicts: "sqlite3changeset_fk_conflicts" [
pIter [sqlite3-changeset-iter!] ; Changeset iterator
pnOut [int-ptr!] ; OUT: Number of FK violations
return: [integer!]
]
;- Finalize A Changeset Iterator
;
; This function is used to finalize an iterator allocated with
; [sqlite3changeset_start()].
;
; This function should only be called on iterators created using the
; [sqlite3changeset_start()] function. If an application calls this
; function with an iterator passed to a conflict-handler by
; [sqlite3changeset_apply()], [SQLITE_MISUSE] is immediately returned and the
; call has no effect.
;
; If an error was encountered within a call to an sqlite3changeset_xxx()
; function (for example an [SQLITE_CORRUPT] in [sqlite3changeset_next()] or an
; [SQLITE_NOMEM] in [sqlite3changeset_new()]) then an error code corresponding
; to that error is returned by this function. Otherwise, SQLITE_OK is
; returned. This is to allow the following pattern (pseudo-code):
;
; sqlite3changeset_start();
; while( SQLITE_ROW==sqlite3changeset_next() ){
; // Do something with change.
; }
; rc = sqlite3changeset_finalize();
; if( rc!=SQLITE_OK ){
; // An error has occurred
; }
;@@ int sqlite3changeset_finalize(sqlite3_changeset_iter *pIter);
sqlite3changeset_finalize: "sqlite3changeset_finalize" [
pIter [sqlite3-changeset-iter!] ;sqlite3_changeset_iter *
return: [integer!]
]
;- Invert A Changeset
;
; This function is used to "invert" a changeset object. Applying an inverted
; changeset to a database reverses the effects of applying the uninverted
; changeset. Specifically:
;
; <ul>
; <li> Each DELETE change is changed to an INSERT, and
; <li> Each INSERT change is changed to a DELETE, and
; <li> For each UPDATE change, the old.* and new.* values are exchanged.
; </ul>
;
; This function does not change the order in which changes appear within
; the changeset. It merely reverses the sense of each individual change.
;
; If successful, a pointer to a buffer containing the inverted changeset
; is stored in *ppOut, the size of the same buffer is stored in *pnOut, and
; SQLITE_OK is returned. If an error occurs, both *pnOut and *ppOut are
; zeroed and an SQLite error code returned.
;
; It is the responsibility of the caller to eventually call sqlite3_free()
; on the *ppOut pointer to free the buffer allocation following a successful
; call to this function.
;
; WARNING/TODO: This function currently assumes that the input is a valid
; changeset. If it is not, the results are undefined.
;@@ int sqlite3changeset_invert(
;@@ int nIn, const void *pIn, /* Input changeset */
;@@ int *pnOut, void **ppOut /* OUT: Inverse of input */
;@@);
sqlite3changeset_invert: "sqlite3changeset_invert" [
nIn [integer!] ;int
pIn [byte-ptr!] ; Input changeset
pnOut [int-ptr!] ;int *
ppOut [int-ptr!] ; OUT: Inverse of input
return: [integer!]
]
;- Concatenate Two Changeset Objects
;
; This function is used to concatenate two changesets, A and B, into a
; single changeset. The result is a changeset equivalent to applying
; changeset A followed by changeset B.
;
; This function combines the two input changesets using an
; sqlite3_changegroup object. Calling it produces similar results as the
; following code fragment:
;
; sqlite3_changegroup *pGrp;
; rc = sqlite3_changegroup_new(&pGrp);
; if( rc==SQLITE_OK ) rc = sqlite3changegroup_add(pGrp, nA, pA);
; if( rc==SQLITE_OK ) rc = sqlite3changegroup_add(pGrp, nB, pB);
; if( rc==SQLITE_OK ){
; rc = sqlite3changegroup_output(pGrp, pnOut, ppOut);
; }else{
; *ppOut = 0;
; *pnOut = 0;
; }
;
; Refer to the sqlite3_changegroup documentation below for details.
;@@ int sqlite3changeset_concat(
;@@ int nA, /* Number of bytes in buffer pA */
;@@ void *pA, /* Pointer to buffer containing changeset A */
;@@ int nB, /* Number of bytes in buffer pB */
;@@ void *pB, /* Pointer to buffer containing changeset B */
;@@ int *pnOut, /* OUT: Number of bytes in output changeset */
;@@ void **ppOut /* OUT: Buffer containing output changeset */
;@@);
sqlite3changeset_concat: "sqlite3changeset_concat" [
nA [integer!] ; Number of bytes in buffer pA
pA [int-ptr!] ; Pointer to buffer containing changeset A
nB [integer!] ; Number of bytes in buffer pB
pB [int-ptr!] ; Pointer to buffer containing changeset B
pnOut [int-ptr!] ; OUT: Number of bytes in output changeset
ppOut [int-ptr!] ; OUT: Buffer containing output changeset
return: [integer!]
]
;- Apply A Changeset To A Database
;
; Apply a changeset to a database. This function attempts to update the
; "main" database attached to handle db with the changes found in the
; changeset passed via the second and third arguments.
;
; The fourth argument (xFilter) passed to this function is the "filter
; callback". If it is not NULL, then for each table affected by at least one
; change in the changeset, the filter callback is invoked with
; the table name as the second argument, and a copy of the context pointer
; passed as the sixth argument to this function as the first. If the "filter
; callback" returns zero, then no attempt is made to apply any changes to
; the table. Otherwise, if the return value is non-zero or the xFilter
; argument to this function is NULL, all changes related to the table are
; attempted.
;
; For each table that is not excluded by the filter callback, this function
; tests that the target database contains a compatible table. A table is
; considered compatible if all of the following are true:
;
; <ul>
; <li> The table has the same name as the name recorded in the
; changeset, and
; <li> The table has at least as many columns as recorded in the
; changeset, and
; <li> The table has primary key columns in the same position as
; recorded in the changeset.
; </ul>
;
; If there is no compatible table, it is not an error, but none of the
; changes associated with the table are applied. A warning message is issued
; via the sqlite3_log() mechanism with the error code SQLITE_SCHEMA. At most
; one such warning is issued for each table in the changeset.
;
; For each change for which there is a compatible table, an attempt is made
; to modify the table contents according to the UPDATE, INSERT or DELETE
; change. If a change cannot be applied cleanly, the conflict handler
; function passed as the fifth argument to sqlite3changeset_apply() may be
; invoked. A description of exactly when the conflict handler is invoked for
; each type of change is below.
;
; Unlike the xFilter argument, xConflict may not be passed NULL. The results
; of passing anything other than a valid function pointer as the xConflict
; argument are undefined.
;
; Each time the conflict handler function is invoked, it must return one
; of [SQLITE_CHANGESET_OMIT], [SQLITE_CHANGESET_ABORT] or
; [SQLITE_CHANGESET_REPLACE]. SQLITE_CHANGESET_REPLACE may only be returned
; if the second argument passed to the conflict handler is either
; SQLITE_CHANGESET_DATA or SQLITE_CHANGESET_CONFLICT. If the conflict-handler
; returns an illegal value, any changes already made are rolled back and
; the call to sqlite3changeset_apply() returns SQLITE_MISUSE. Different
; actions are taken by sqlite3changeset_apply() depending on the value
; returned by each invocation of the conflict-handler function. Refer to
; the documentation for the three
; [SQLITE_CHANGESET_OMIT|available return values] for details.
;
; <dl>
; <dt>DELETE Changes<dd>
; For each DELETE change, this function checks if the target database
; contains a row with the same primary key value (or values) as the
; original row values stored in the changeset. If it does, and the values
; stored in all non-primary key columns also match the values stored in
; the changeset the row is deleted from the target database.
;
; If a row with matching primary key values is found, but one or more of
; the non-primary key fields contains a value different from the original
; row value stored in the changeset, the conflict-handler function is
; invoked with [SQLITE_CHANGESET_DATA] as the second argument. If the
; database table has more columns than are recorded in the changeset,
; only the values of those non-primary key fields are compared against
; the current database contents - any trailing database table columns
; are ignored.
;
; If no row with matching primary key values is found in the database,
; the conflict-handler function is invoked with [SQLITE_CHANGESET_NOTFOUND]
; passed as the second argument.
;
; If the DELETE operation is attempted, but SQLite returns SQLITE_CONSTRAINT
; (which can only happen if a foreign key constraint is violated), the
; conflict-handler function is invoked with [SQLITE_CHANGESET_CONSTRAINT]
; passed as the second argument. This includes the case where the DELETE
; operation is attempted because an earlier call to the conflict handler
; function returned [SQLITE_CHANGESET_REPLACE].
;
; <dt>INSERT Changes<dd>
; For each INSERT change, an attempt is made to insert the new row into
; the database. If the changeset row contains fewer fields than the
; database table, the trailing fields are populated with their default
; values.
;
; If the attempt to insert the row fails because the database already
; contains a row with the same primary key values, the conflict handler
; function is invoked with the second argument set to
; [SQLITE_CHANGESET_CONFLICT].
;
; If the attempt to insert the row fails because of some other constraint
; violation (e.g. NOT NULL or UNIQUE), the conflict handler function is
; invoked with the second argument set to [SQLITE_CHANGESET_CONSTRAINT].
; This includes the case where the INSERT operation is re-attempted because
; an earlier call to the conflict handler function returned
; [SQLITE_CHANGESET_REPLACE].
;
; <dt>UPDATE Changes<dd>
; For each UPDATE change, this function checks if the target database
; contains a row with the same primary key value (or values) as the
; original row values stored in the changeset. If it does, and the values
; stored in all modified non-primary key columns also match the values
; stored in the changeset the row is updated within the target database.
;
; If a row with matching primary key values is found, but one or more of
; the modified non-primary key fields contains a value different from an
; original row value stored in the changeset, the conflict-handler function
; is invoked with [SQLITE_CHANGESET_DATA] as the second argument. Since
; UPDATE changes only contain values for non-primary key fields that are
; to be modified, only those fields need to match the original values to
; avoid the SQLITE_CHANGESET_DATA conflict-handler callback.
;
; If no row with matching primary key values is found in the database,
; the conflict-handler function is invoked with [SQLITE_CHANGESET_NOTFOUND]
; passed as the second argument.
;
; If the UPDATE operation is attempted, but SQLite returns
; SQLITE_CONSTRAINT, the conflict-handler function is invoked with
; [SQLITE_CHANGESET_CONSTRAINT] passed as the second argument.
; This includes the case where the UPDATE operation is attempted after
; an earlier call to the conflict handler function returned
; [SQLITE_CHANGESET_REPLACE].
; </dl>
;
; It is safe to execute SQL statements, including those that write to the
; table that the callback related to, from within the xConflict callback.
; This can be used to further customize the applications conflict
; resolution strategy.
;
; All changes made by this function are enclosed in a savepoint transaction.
; If any other error (aside from a constraint failure when attempting to
; write to the target database) occurs, then the savepoint transaction is
; rolled back, restoring the target database to its original state, and an
; SQLite error code returned.
;@@ int sqlite3changeset_apply(
;@@ sqlite3 *db, /* Apply change to "main" db of this handle */
;@@ int nChangeset, /* Size of changeset in bytes */
;@@ void *pChangeset, /* Changeset blob */
;@@ int(*xFilter)(
;@@ void *pCtx, /* Copy of sixth arg to _apply() */
;@@ const char *zTab /* Table name */
;@@ ),
;@@ int(*xConflict)(
;@@ void *pCtx, /* Copy of sixth arg to _apply() */
;@@ int eConflict, /* DATA, MISSING, CONFLICT, CONSTRAINT */
;@@ sqlite3_changeset_iter *p /* Handle describing change and conflict */
;@@ ),
;@@ void *pCtx /* First argument passed to xConflict */
;@@);
sqlite3changeset_apply: "sqlite3changeset_apply" [
db [sqlite3!] ; Apply change to "main" db of this handle
nChangeset [integer!] ; Size of changeset in bytes
pChangeset [int-ptr!] ; Changeset blob
xFilter [function! [
pCtx [int-ptr!] ; Copy of sixth arg to _apply()
zTab [c-string!] ; Table name
return: [integer!]
]]
xConflict [function! [
pCtx [int-ptr!] ; Copy of sixth arg to _apply()
eConflict [integer!] ; DATA, MISSING, CONFLICT, CONSTRAINT
p [sqlite3-changeset-iter!] ; Handle describing change and conflict
return: [integer!]
]]
pCtx [int-ptr!] ; First argument passed to xConflict
return: [integer!]
]
;
;- Streaming Versions of API functions.
;
; The six streaming API xxx_strm() functions serve similar purposes to the
; corresponding non-streaming API functions:
;
; <table border=1 style="margin-left:8ex;margin-right:8ex">
; <tr><th>Streaming function<th>Non-streaming equivalent</th>
; <tr><td>sqlite3changeset_apply_str<td>[sqlite3changeset_apply]
; <tr><td>sqlite3changeset_concat_str<td>[sqlite3changeset_concat]
; <tr><td>sqlite3changeset_invert_str<td>[sqlite3changeset_invert]
; <tr><td>sqlite3changeset_start_str<td>[sqlite3changeset_start]
; <tr><td>sqlite3session_changeset_str<td>[sqlite3session_changeset]
; <tr><td>sqlite3session_patchset_str<td>[sqlite3session_patchset]
; </table>
;
; Non-streaming functions that accept changesets (or patchsets) as input
; require that the entire changeset be stored in a single buffer in memory.
; Similarly, those that return a changeset or patchset do so by returning
; a pointer to a single large buffer allocated using sqlite3_malloc().
; Normally this is convenient. However, if an application running in a
; low-memory environment is required to handle very large changesets, the
; large contiguous memory allocations required can become onerous.
;
; In order to avoid this problem, instead of a single large buffer, input
; is passed to a streaming API functions by way of a callback function that
; the sessions module invokes to incrementally request input data as it is
; required. In all cases, a pair of API function parameters such as
;
; <pre>
; &nbsp; int nChangeset,
; &nbsp; void *pChangeset,
; </pre>
;
; Is replaced by:
;
; <pre>
; &nbsp; int (*xInput)(void *pIn, void *pData, int *pnData),
; &nbsp; void *pIn,
; </pre>
;
; Each time the xInput callback is invoked by the sessions module, the first
; argument passed is a copy of the supplied pIn context pointer. The second
; argument, pData, points to a buffer (*pnData) bytes in size. Assuming no
; error occurs the xInput method should copy up to (*pnData) bytes of data
; into the buffer and set (*pnData) to the actual number of bytes copied
; before returning SQLITE_OK. If the input is completely exhausted, (*pnData)
; should be set to zero to indicate this. Or, if an error occurs, an SQLite
; error code should be returned. In all cases, if an xInput callback returns
; an error, all processing is abandoned and the streaming API function
; returns a copy of the error code to the caller.
;
; In the case of sqlite3changeset_start_strm(), the xInput callback may be
; invoked by the sessions module at any point during the lifetime of the
; iterator. If such an xInput callback returns an error, the iterator enters
; an error state, whereby all subsequent calls to iterator functions
; immediately fail with the same error code as returned by xInput.
;
; Similarly, streaming API functions that return changesets (or patchsets)
; return them in chunks by way of a callback function instead of via a
; pointer to a single large buffer. In this case, a pair of parameters such
; as:
;
; <pre>
; &nbsp; int *pnChangeset,
; &nbsp; void **ppChangeset,
; </pre>
;
; Is replaced by:
;
; <pre>
; &nbsp; int (*xOutput)(void *pOut, const void *pData, int nData),
; &nbsp; void *pOut
; </pre>
;
; The xOutput callback is invoked zero or more times to return data to
; the application. The first parameter passed to each call is a copy of the
; pOut pointer supplied by the application. The second parameter, pData,
; points to a buffer nData bytes in size containing the chunk of output
; data being returned. If the xOutput callback successfully processes the
; supplied data, it should return SQLITE_OK to indicate success. Otherwise,
; it should return some other SQLite error code. In this case processing
; is immediately abandoned and the streaming API function returns a copy
; of the xOutput error code to the application.
;
; The sessions module never invokes an xOutput callback with the third
; parameter set to a value less than or equal to zero. Other than this,
; no guarantees are made as to the size of the chunks of data returned.
;@@ int sqlite3changeset_apply_strm(
;@@ sqlite3 *db, /* Apply change to "main" db of this handle */
;@@ int (*xInput)(void *pIn, void *pData, int *pnData), /* Input function */
;@@ void *pIn, /* First arg for xInput */
;@@ int(*xFilter)(
;@@ void *pCtx, /* Copy of sixth arg to _apply() */
;@@ const char *zTab /* Table name */
;@@ ),
;@@ int(*xConflict)(
;@@ void *pCtx, /* Copy of sixth arg to _apply() */
;@@ int eConflict, /* DATA, MISSING, CONFLICT, CONSTRAINT */
;@@ sqlite3_changeset_iter *p /* Handle describing change and conflict */
;@@ ),
;@@ void *pCtx /* First argument passed to xConflict */
;@@);
sqlite3changeset_apply_strm: "sqlite3changeset_apply_strm" [
db [sqlite3!] ; Apply change to "main" db of this handle
xInput [function! [
pIn [int-ptr!]
pData [int-ptr!]
pnData [int-ptr!]
return: [integer!]
]]
pIn [int-ptr!] ; First arg for xInput
xFilter [function! [
pCtx [int-ptr!] ; Copy of sixth arg to _apply()
zTab [c-string!] ; Table name
return: [integer!]
]]
xConflict [function! [
pCtx [int-ptr!] ; Copy of sixth arg to _apply()
eConflict [integer!] ; DATA, MISSING, CONFLICT, CONSTRAINT
p [sqlite3-changeset-iter!] ; Handle describing change and conflict
return: [integer!]
]]
pCtx [int-ptr!] ; First argument passed to xConflict
return: [integer!]
]
;@@ int sqlite3changeset_concat_strm(
;@@ int (*xInputA)(void *pIn, void *pData, int *pnData),
;@@ void *pInA,
;@@ int (*xInputB)(void *pIn, void *pData, int *pnData),
;@@ void *pInB,
;@@ int (*xOutput)(void *pOut, const void *pData, int nData),
;@@ void *pOut
;@@);
sqlite3changeset_concat_strm: "sqlite3changeset_concat_strm" [
xInputA [function! [
pIn [int-ptr!]
pData [int-ptr!]
pnData [int-ptr!]
return: [integer!]
]]
pInA [int-ptr!] ;void *
xInputB [function! [
pIn [int-ptr!]
pData [int-ptr!]
pnData [int-ptr!]
return: [integer!]
]]
pInB [int-ptr!] ;void *
xOutput [function! [
pOut [int-ptr!]
pData [byte-ptr!]
nData [integer!]
return: [integer!]
]]
pOut [int-ptr!] ;void *
return: [integer!]
]
;@@ int sqlite3changeset_invert_strm(
;@@ int (*xInput)(void *pIn, void *pData, int *pnData),
;@@ void *pIn,
;@@ int (*xOutput)(void *pOut, const void *pData, int nData),
;@@ void *pOut
;@@);
sqlite3changeset_invert_strm: "sqlite3changeset_invert_strm" [
xInput [function! [
pIn [int-ptr!]
pData [int-ptr!]
pnData [int-ptr!]
return: [integer!]
]]
pIn [int-ptr!] ;void *
xOutput [function! [
pOut [int-ptr!]
pData [byte-ptr!]
nData [integer!]
return: [integer!]
]]
pOut [int-ptr!] ;void *
return: [integer!]
]
;@@ int sqlite3changeset_start_strm(
;@@ sqlite3_changeset_iter **pp,
;@@ int (*xInput)(void *pIn, void *pData, int *pnData),
;@@ void *pIn
;@@);
sqlite3changeset_start_strm: "sqlite3changeset_start_strm" [
pp [sqlite3-changeset-iter-ref!];sqlite3_changeset_iter **
xInput [function! [
pIn [int-ptr!]
pData [int-ptr!]
pnData [int-ptr!]
return: [integer!]
]]
pIn [int-ptr!] ;void *
return: [integer!]
]
;@@ int sqlite3session_changeset_strm(
;@@ sqlite3_session *pSession,
;@@ int (*xOutput)(void *pOut, const void *pData, int nData),
;@@ void *pOut
;@@);
sqlite3session_changeset_strm: "sqlite3session_changeset_strm" [
pSession [sqlite3-session!] ;sqlite3_session *
xOutput [function! [
pOut [int-ptr!]
pData [byte-ptr!]
nData [integer!]
return: [integer!]
]]
pOut [int-ptr!] ;void *
return: [integer!]
]
;@@ int sqlite3session_patchset_strm(
;@@ sqlite3_session *pSession,
;@@ int (*xOutput)(void *pOut, const void *pData, int nData),
;@@ void *pOut
;@@);
sqlite3session_patchset_strm: "sqlite3session_patchset_strm" [
pSession [sqlite3-session!] ;sqlite3_session *
xOutput [function! [
pOut [int-ptr!]
pData [byte-ptr!]
nData [integer!]
return: [integer!]
]]
pOut [int-ptr!] ;void *
return: [integer!]
]
;******* End of sqlite3session.h ********
;******* Begin file fts5.h ********
;************************************************************************
;
;************************************************************************
; Flags that may be passed as the third argument to xTokenize()
]] ;end of imports
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