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Tools and Maintenance

CouchDB needs some maintenance now and then such as database and view compaction aswell as cleanups, The Doctrine CouchDB console command (based on Symfony Console) ships with a bunch of commands that help you with workflow.

If you are using Doctrine CouchDB via PEAR you can put a file called "cli-config.php" into your project root and register a Helper like such:

1<?php

require_once "bootstrap.php";

$helperSet = new \Symfony\Component\Console\Helper\HelperSet(array(
    'couchdb' => new \Doctrine\CouchDB\Tools\Console\Helper\CouchDBHelper(null, $dm),
));


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If you are using a downloadable or installation from git you should create your own executable for your project as shown in the sandbox or the bin/doctrine-couchdb.php script.

Now if you execute your script or the couchdb command installed with pear "doctrine-couchdb" you get the output of the help screen:

shell> php doctrine-couchdb.php
Doctrine CouchDB CLI version 1.0.0ALPHA2

Usage:
  [options] command [arguments]

Options:
  --help           -h Display this help message.
  --quiet          -q Do not output any message.
  --verbose        -v Increase verbosity of messages.
  --version        -V Display this program version.
  --ansi              Force ANSI output.
  --no-ansi           Disable ANSI output.
  --no-interaction -n Do not ask any interactive question.

Available commands:
  help                                   Displays help for a command
  list                                   Lists commands
couchdb
  couchdb:maintenance:compact-database   Compact the database
  couchdb:maintenance:compact-view       Compat the given view
  couchdb:maintenance:view-cleanup       Cleanup deleted views
  couchdb:migrate                        Execute a migration in CouchDB.
  couchdb:odm:update-design-doc          Update all new/modified registered design docs or a single document if a docname is provided.
  couchdb:replication:cancel             Cancel replication from a given source to target.
  couchdb:replication:start              Start replication from a given source to target.

couchdb:migrate

Pass this command an autoloadable class-name and it will execute a migration by paginating the _all_docs view in batches of 100 documents, either modifying the document to be in a new, migrated state or leaving it alone (return null).

An example of a migration is the Alpha1 to Alpha2 Migration class:

1<?php
namespace Doctrine\ODM\CouchDB\Tools\Migrations;

use Doctrine\CouchDB\Tools\Migrations\AbstractMigration;

class Alpha2Migration extends AbstractMigration
{
    protected function migrate(array $docData)
    {
        $migrate = false;
        if (isset($docData['doctrine_metadata']['type'])) {
            $docData['type'] = $docData['doctrine_metadata']['type'];
            unset($docData['doctrine_metadata']['type']);
            $migrate = true;
        }
        if (isset($docData['doctrine_metadata']['associations'])) {
            $associations = array();
            foreach ($docData['doctrine_metadata']['associations'] AS $name => $values) {
                $docData[$name] = $values;
                $associations[] = $name;
            }
            $docData['doctrine_metadata'] = $associations;
            $migrate = true;
        }

        return ($migrate) ? $docData : null;
    }
}


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As you can see it migrates all doc.doctrine_metadata.type properties to doc.type and replaces the doc.doctrine_metadata.associations by moving the values into the main document just keeping a list of the association fields.

couchdb:maintenance:compact-database

Will start a database compaction.

couchdb:maintenance:compact-view

Will start a view compaction for the given design document.

couchdb:maintenance:view-cleanup

Will cleanup leftover and temporary view files.

couchdb:odm:update-design-doc

Will update the design document with the given name registered in Doctrine\ODM\CouchDB\Configuration to a new version. This is necessary to use when you change your design documents as Doctrine CouchDB cannot efficiently know if a view definition is outdated or not.