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mclevenger/Pdo.php

Created November 22, 2012 17:44
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Magento/Zend override for addressing pdo deadlock issue
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Pdo.php
Magento/Zend override for addressing pdo deadlock issue
(we are not sure about the safety and effectiveness of this fix)
FILE PATH:
app/code/local/Zend/Db/Statement/Pdo.php
<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to [email protected] so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Db
* @subpackage Statement
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: Pdo.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/**
* @see Zend_Db_Statement
*/
#require_once 'Zend/Db/Statement.php';
/**
* Proxy class to wrap a PDOStatement object.
* Matches the interface of PDOStatement. All methods simply proxy to the
* matching method in PDOStatement. PDOExceptions thrown by PDOStatement
* are re-thrown as Zend_Db_Statement_Exception.
*
* @category Zend
* @package Zend_Db
* @subpackage Statement
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Db_Statement_Pdo extends Zend_Db_Statement implements IteratorAggregate
{
/**
* @var int
*/
protected $_fetchMode = PDO::FETCH_ASSOC;
/**
* Prepare a string SQL statement and create a statement object.
*
* @param string $sql
* @return void
* @throws Zend_Db_Statement_Exception
*/
protected function _prepare($sql)
{
try {
$this->_stmt = $this->_adapter->getConnection()->prepare($sql);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Bind a column of the statement result set to a PHP variable.
*
* @param string $column Name the column in the result set, either by
* position or by name.
* @param mixed $param Reference to the PHP variable containing the value.
* @param mixed $type OPTIONAL
* @return bool
* @throws Zend_Db_Statement_Exception
*/
public function bindColumn($column, &$param, $type = null)
{
try {
if ($type === null) {
return $this->_stmt->bindColumn($column, $param);
} else {
return $this->_stmt->bindColumn($column, $param, $type);
}
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Binds a parameter to the specified variable name.
*
* @param mixed $parameter Name the parameter, either integer or string.
* @param mixed $variable Reference to PHP variable containing the value.
* @param mixed $type OPTIONAL Datatype of SQL parameter.
* @param mixed $length OPTIONAL Length of SQL parameter.
* @param mixed $options OPTIONAL Other options.
* @return bool
* @throws Zend_Db_Statement_Exception
*/
protected function _bindParam($parameter, &$variable, $type = null, $length = null, $options = null)
{
try {
if ($type === null) {
if (is_bool($variable)) {
$type = PDO::PARAM_BOOL;
} elseif ($variable === null) {
$type = PDO::PARAM_NULL;
} elseif (is_integer($variable)) {
$type = PDO::PARAM_INT;
} else {
$type = PDO::PARAM_STR;
}
}
return $this->_stmt->bindParam($parameter, $variable, $type, $length, $options);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Binds a value to a parameter.
*
* @param mixed $parameter Name the parameter, either integer or string.
* @param mixed $value Scalar value to bind to the parameter.
* @param mixed $type OPTIONAL Datatype of the parameter.
* @return bool
* @throws Zend_Db_Statement_Exception
*/
public function bindValue($parameter, $value, $type = null)
{
if (is_string($parameter) && $parameter[0] != ':') {
$parameter = ":$parameter";
}
$this->_bindParam[$parameter] = $value;
try {
if ($type === null) {
return $this->_stmt->bindValue($parameter, $value);
} else {
return $this->_stmt->bindValue($parameter, $value, $type);
}
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Closes the cursor, allowing the statement to be executed again.
*
* @return bool
* @throws Zend_Db_Statement_Exception
*/
public function closeCursor()
{
try {
return $this->_stmt->closeCursor();
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Returns the number of columns in the result set.
* Returns null if the statement has no result set metadata.
*
* @return int The number of columns.
* @throws Zend_Db_Statement_Exception
*/
public function columnCount()
{
try {
return $this->_stmt->columnCount();
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Retrieves the error code, if any, associated with the last operation on
* the statement handle.
*
* @return string error code.
* @throws Zend_Db_Statement_Exception
*/
public function errorCode()
{
try {
return $this->_stmt->errorCode();
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Retrieves an array of error information, if any, associated with the
* last operation on the statement handle.
*
* @return array
* @throws Zend_Db_Statement_Exception
*/
public function errorInfo()
{
try {
return $this->_stmt->errorInfo();
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Executes a prepared statement.
*
* @param array $params OPTIONAL Values to bind to parameter placeholders.
* @return bool
* @throws Zend_Db_Statement_Exception
*/
public function _execute(array $params = null)
{
//Mage::log("USING NEW PDO ZEND MOD");
// begin changes 2011-10-10 mark c
$tries = 0;
do {
$retry = false;
try {
if ($params !== null) {
return $this->_stmt->execute($params);
} else {
return $this->_stmt->execute();
}
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
if ($tries < 10 and $e->getMessage()=='SQLSTATE[40001]: Serialization failure: 1213 Deadlock found when trying to get lock; try restarting transaction') {
$retry = true;
} else {
throw new Zend_Db_Statement_Exception($e->getMessage(), (int) $e->getCode(), $e);
}
$tries++;
}
} while ($retry);
// end changes
}
/**
* Fetches a row from the result set.
*
* @param int $style OPTIONAL Fetch mode for this fetch operation.
* @param int $cursor OPTIONAL Absolute, relative, or other.
* @param int $offset OPTIONAL Number for absolute or relative cursors.
* @return mixed Array, object, or scalar depending on fetch mode.
* @throws Zend_Db_Statement_Exception
*/
public function fetch($style = null, $cursor = null, $offset = null)
{
if ($style === null) {
$style = $this->_fetchMode;
}
try {
return $this->_stmt->fetch($style, $cursor, $offset);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Required by IteratorAggregate interface
*
* @return IteratorIterator
*/
public function getIterator()
{
return new IteratorIterator($this->_stmt);
}
/**
* Returns an array containing all of the result set rows.
*
* @param int $style OPTIONAL Fetch mode.
* @param int $col OPTIONAL Column number, if fetch mode is by column.
* @return array Collection of rows, each in a format by the fetch mode.
* @throws Zend_Db_Statement_Exception
*/
public function fetchAll($style = null, $col = null)
{
if ($style === null) {
$style = $this->_fetchMode;
}
try {
if ($style == PDO::FETCH_COLUMN) {
if ($col === null) {
$col = 0;
}
return $this->_stmt->fetchAll($style, $col);
} else {
return $this->_stmt->fetchAll($style);
}
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Returns a single column from the next row of a result set.
*
* @param int $col OPTIONAL Position of the column to fetch.
* @return string
* @throws Zend_Db_Statement_Exception
*/
public function fetchColumn($col = 0)
{
try {
return $this->_stmt->fetchColumn($col);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Fetches the next row and returns it as an object.
*
* @param string $class OPTIONAL Name of the class to create.
* @param array $config OPTIONAL Constructor arguments for the class.
* @return mixed One object instance of the specified class.
* @throws Zend_Db_Statement_Exception
*/
public function fetchObject($class = 'stdClass', array $config = array())
{
try {
return $this->_stmt->fetchObject($class, $config);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Retrieve a statement attribute.
*
* @param integer $key Attribute name.
* @return mixed Attribute value.
* @throws Zend_Db_Statement_Exception
*/
public function getAttribute($key)
{
try {
return $this->_stmt->getAttribute($key);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Returns metadata for a column in a result set.
*
* @param int $column
* @return mixed
* @throws Zend_Db_Statement_Exception
*/
public function getColumnMeta($column)
{
try {
return $this->_stmt->getColumnMeta($column);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Retrieves the next rowset (result set) for a SQL statement that has
* multiple result sets. An example is a stored procedure that returns
* the results of multiple queries.
*
* @return bool
* @throws Zend_Db_Statement_Exception
*/
public function nextRowset()
{
try {
return $this->_stmt->nextRowset();
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Returns the number of rows affected by the execution of the
* last INSERT, DELETE, or UPDATE statement executed by this
* statement object.
*
* @return int The number of rows affected.
* @throws Zend_Db_Statement_Exception
*/
public function rowCount()
{
try {
return $this->_stmt->rowCount();
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Set a statement attribute.
*
* @param string $key Attribute name.
* @param mixed $val Attribute value.
* @return bool
* @throws Zend_Db_Statement_Exception
*/
public function setAttribute($key, $val)
{
try {
return $this->_stmt->setAttribute($key, $val);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
/**
* Set the default fetch mode for this statement.
*
* @param int $mode The fetch mode.
* @return bool
* @throws Zend_Db_Statement_Exception
*/
public function setFetchMode($mode)
{
$this->_fetchMode = $mode;
try {
return $this->_stmt->setFetchMode($mode);
} catch (PDOException $e) {
#require_once 'Zend/Db/Statement/Exception.php';
throw new Zend_Db_Statement_Exception($e->getMessage(), $e->getCode(), $e);
}
}
}
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