dch

CouchDB and multiple tags

The problem

Given a set of documents, each associated with multiple tags, how can I retrieve the documents tagged with an arbitrary set of tags?

My solution

dch

Pre-requisites

Use http://github.com/dch/couchdb-docs as source including modified perl scripts

perlbrew

curl -kL http://install.perlbrew.pl | bash
perlbrew install perl-5.14.2
perlbrew switch perl-5.14.2

perlbrew install-cpanm

dch

This is where I'm thinking of going, in no particular order:

Underway

• enable JS and ETAP test framework on Windows

Getting there

• Makefile target for a trimmed OTP + Couch build & upx compression
• MSI support (thanks in advance to Wohali!!)
• add a GeoCouchified version with erica + kanso support built in
• performance improvements c/- Microsoft's PGO

dch

#!/usr/bin/env perl
use Modern::Perl;
use Mojo::UserAgent;

my $api  = "https://api.github.com";
my $repo = "$api/repos/apache/couchdb";

################################################################################
# TODO
# modify AUTHORS directly

dch

cl.exe
 -LD -MD -Zi -Wall
 -Ic:/erlang/lib/erl_interface-3.7.7/include
 -Ic:/erlang/usr/include
 -Iz:/source/erlgeom/deps/geos/include
 ..\c_src\erlgeom.c
-link
 -LIBPATH:c:/erlang/lib/erl_interface-3.7.7/lib
 -LIBPATH:c:/erlang/usr/lib
 -LIBPATH:z:/source/erlgeom/deps/geos/lib

dch

    def get_or_create_db(self, db_name, designs=ALL_DESIGNS):
        from couchapp import dispatch
        couchapp_dir = os.path.join(
            settings.PROJECT_DIR, '..', '..', 'couchdb', 'tweet_counts'
        )
        server = couchdbkit.Server(uri=settings.COUCHDB_SERVER_URI,
            resource_class=couchdb.RequestsResource)
        db = server.get_db(db_name)
        try:
            db.info()

dch

{port_env, [
    %% add MS Visual C++ support to rebar on Windows
    {"win32", "CC", "cl.exe"},
    {"win32", "CXX", "cl.exe"},
    {"win32", "LINKER", "link.exe"},

    {"win32", "DRV_CXX_TEMPLATE",
     "$CXX /c $CXXFLAGS $DRV_CFLAGS $PORT_IN_FILES /Fo$PORT_OUT_FILE"},
    {"win32", "DRV_CC_TEMPLATE",
     "$CC /c $CFLAGS $DRV_CFLAGS $PORT_IN_FILES /Fo$PORT_OUT_FILE"},

dch

-module(t).

-export([start/0, go/0, analyze/0, server/0]).

start() ->
    percept:profile("test.dat", {t, go, []}, [procs]).

go() ->
    Led = led:start(1),
    Led1 = led:start(1),

dch

Another mustache.erl example, this time showing off lists and asking for context in one of the view functions.

dch

{
	"all_or_nothing": true,
	"docs": [
		{
			"_id": "doc1",
			"device_id": "wub"
		},
		{
			"_id": "doc2",
			"device_id": "wub"