735 lines
20 KiB
PHP
735 lines
20 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.org>.
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*/
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#namespace Doctrine::ORM;
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#use Doctrine::Common::Configuration;
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#use Doctrine::Common::EventManager;
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#use Doctrine::Common::NullObject;
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#use Doctrine::DBAL::Connections::Connection;
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#use Doctrine::ORM::Exceptions::EntityManagerException;
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#use Doctrine::ORM::Internal::UnitOfWork;
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#use Doctrine::ORM::Mapping::ClassMetadata;
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/**
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* The EntityManager is the central access point to ORM functionality.
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*
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link www.phpdoctrine.org
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* @since 2.0
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* @version $Revision$
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* @author Roman Borschel <roman@code-factory.org>
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*/
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class Doctrine_EntityManager
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{
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/**
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* IMMEDIATE: Flush occurs automatically after each operation that issues database
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* queries. No operations are queued.
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*/
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const FLUSHMODE_IMMEDIATE = 'immediate';
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/**
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* AUTO: Flush occurs automatically in the following situations:
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* - Before any query executions (to prevent getting stale data)
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* - On EntityManager#commit()
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*/
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const FLUSHMODE_AUTO = 'auto';
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/**
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* COMMIT: Flush occurs automatically only on EntityManager#commit().
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*/
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const FLUSHMODE_COMMIT = 'commit';
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/**
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* MANUAL: Flush occurs never automatically. The only way to flush is
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* through EntityManager#flush().
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*/
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const FLUSHMODE_MANUAL = 'manual';
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/**
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* The currently active EntityManager. Only one EntityManager can be active
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* at any time.
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*
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* @var Doctrine::ORM::EntityManager
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*/
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private static $_activeEm;
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/**
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* The unique name of the EntityManager. The name is used to bind entity classes
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* to certain EntityManagers.
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*
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* @var string
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*/
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private $_name;
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/**
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* The used Configuration.
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*
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* @var Configuration
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*/
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private $_config;
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/**
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* The database connection used by the EntityManager.
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*
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* @var Doctrine_Connection
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*/
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private $_conn;
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/**
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* The metadata factory, used to retrieve the metadata of entity classes.
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*
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* @var Doctrine::ORM::Mapping::ClassMetadataFactory
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*/
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private $_metadataFactory;
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/**
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* The EntityPersister instances.
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*
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* @var array
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*/
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private $_persisters = array();
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/**
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* The EntityRepository instances.
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*
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* @var array
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*/
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private $_repositories = array();
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/**
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* The currently used flush mode. Defaults to 'commit'.
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*
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* @var string
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*/
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private $_flushMode = 'commit';
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/**
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* The unit of work used to coordinate object-level transactions.
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*
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* @var UnitOfWork
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*/
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private $_unitOfWork;
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/**
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* The event manager that is the central point of the event system.
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*
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* @var EventManager
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*/
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private $_eventManager;
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/**
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* Container that is used temporarily during hydration.
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*
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* @var array
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*/
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private $_tmpEntityData = array();
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private $_closed = false;
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/**
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* Creates a new EntityManager that operates on the given database connection.
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*
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* @param Doctrine_Connection $conn
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* @param string $name
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*/
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protected function __construct(Doctrine_Connection $conn, $name, Doctrine_Common_Configuration $config,
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Doctrine_Common_EventManager $eventManager)
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{
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$this->_conn = $conn;
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$this->_name = $name;
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$this->_config = $config;
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$this->_eventManager = $eventManager;
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$this->_metadataFactory = new Doctrine_ClassMetadata_Factory(
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$this, new Doctrine_ClassMetadata_CodeDriver());
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$this->_unitOfWork = new Doctrine_Connection_UnitOfWork($this);
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$this->_nullObject = Doctrine_ORM_Internal_Null::$INSTANCE;
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}
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/**
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* Gets the database connection object used by the EntityManager.
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*
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* @return Doctrine_Connection
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*/
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public function getConnection()
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{
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return $this->_conn;
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}
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/**
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* Gets the name of the EntityManager.
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*
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* @return string The name of the EntityManager.
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*/
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public function getName()
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{
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return $this->_name;
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}
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/**
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* Gets the metadata for a class. Alias for getClassMetadata().
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*
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* @return Doctrine_Metadata
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*/
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public function getMetadata($className)
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{
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return $this->getClassMetadata($className);
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}
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/**
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* Starts a database transaction.
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*/
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public function beginTransaction()
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{
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return $this->_conn->beginTransaction();
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}
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/**
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* Commits a running database transaction.
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* This causes a flush() of the EntityManager if the flush mode is set to
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* AUTO or COMMIT.
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*
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* @return unknown
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*/
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public function commit()
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{
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if ($this->_flushMode == self::FLUSHMODE_AUTO || $this->_flushMode == self::FLUSHMODE_COMMIT) {
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$this->flush();
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}
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return $this->_conn->commitTransaction();
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}
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/**
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* Returns the metadata for a class.
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*
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* @return Doctrine_Metadata
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*/
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public function getClassMetadata($className)
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{
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return $this->_metadataFactory->getMetadataFor($className);
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}
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/**
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* Sets the driver that is used to obtain metadata mapping information
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* about Entities.
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*
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* @param $driver The driver to use.
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*/
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public function setClassMetadataDriver($driver)
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{
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$this->_metadataFactory->setDriver($driver);
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}
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/**
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* Creates a new Doctrine_Query object that operates on this connection.
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*
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* @param string The DQL string.
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* @return Doctrine::ORM::Query
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* @todo package:orm
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*/
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public function createQuery($dql = "")
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{
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$query = new Doctrine_Query($this);
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if ( ! empty($dql)) {
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$query->setDql($dql);
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}
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return $query;
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}
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/**
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* Gets the EntityPersister for an Entity.
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*
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* This is usually not of interest for users, mainly for internal use.
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*
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* @param string $entityName The name of the Entity.
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* @return Doctrine::ORM::Internal::EntityPersister
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*/
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public function getEntityPersister($entityName)
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{
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if ( ! isset($this->_persisters[$entityName])) {
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$class = $this->getClassMetadata($entityName);
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if ($class->getInheritanceType() == Doctrine::INHERITANCE_TYPE_JOINED) {
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$persister = new Doctrine_EntityPersister_JoinedSubclass($this, $class);
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} else {
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$persister = new Doctrine_EntityPersister_Standard($this, $class);
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}
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$this->_persisters[$entityName] = $persister;
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}
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return $this->_persisters[$entityName];
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}
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/**
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* Detaches an entity from the manager. It's lifecycle is no longer managed.
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*
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* @param Doctrine_Entity $entity
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* @return unknown
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*/
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public function detach(Doctrine_ORM_Entity $entity)
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{
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return $this->_unitOfWork->removeFromIdentityMap($entity);
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}
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/**
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* Creates a query with the specified name.
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*
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* @todo Implementation.
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* @throws SomeException If there is no query registered with the given name.
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*/
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public function createNamedQuery($name)
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{
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//...
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}
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/**
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* @todo Implementation.
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*/
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public function createNativeQuery($sql = "")
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{
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//...
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}
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/**
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* @todo Implementation.
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*/
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public function createNamedNativeQuery($name)
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{
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//...
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}
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/**
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* @todo Implementation.
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*/
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public function createCriteria()
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{
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//...
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}
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/**
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* Flushes all changes to objects that have been queued up to now to the database.
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*/
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public function flush()
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{
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$this->_errorIfNotActiveOrClosed();
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$this->_unitOfWork->commit();
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}
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/**
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* Finds an Entity by its identifier.
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* This is just a convenient shortcut for getRepository()->find().
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*
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* @param string $entityName
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* @param mixed $identifier
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* @return Doctrine::ORM::Entity
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*/
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public function find($entityName, $identifier)
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{
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return $this->getRepository($entityName)->find($identifier);
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}
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/**
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* Sets the flush mode.
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*
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* @param string $flushMode
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*/
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public function setFlushMode($flushMode)
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{
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if ( ! $this->_isFlushMode($flushMode)) {
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throw Doctrine_ORM_Exceptions_EntityManagerException::invalidFlushMode();
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}
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$this->_flushMode = $flushMode;
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}
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private function _isFlushMode($value)
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{
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return $value == self::FLUSHMODE_AUTO ||
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$value == self::FLUSHMODE_COMMIT ||
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$value == self::FLUSHMODE_IMMEDIATE ||
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$value == self::FLUSHMODE_MANUAL;
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}
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/**
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* Gets the currently used flush mode.
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*
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* @return string
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*/
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public function getFlushMode()
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{
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return $this->_flushMode;
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}
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/**
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* Clears the persistence context, detaching all entities.
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*
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* @return void
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* @todo package:orm
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*/
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public function clear($entityName = null)
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{
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if ($entityName === null) {
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$this->_unitOfWork->detachAll();
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} else {
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//...
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}
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}
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/**
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* Closes the EntityManager.
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*
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*/
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public function close()
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{
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$this->_closed = true;
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}
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/**
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* Gets the result cache driver used by the EntityManager.
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*
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* @return Doctrine::ORM::Cache::CacheDriver The cache driver.
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*/
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public function getResultCacheDriver()
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{
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if ( ! $this->getAttribute(Doctrine::ATTR_RESULT_CACHE)) {
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throw new Doctrine_Exception('Result Cache driver not initialized.');
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}
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return $this->getAttribute(Doctrine::ATTR_RESULT_CACHE);
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}
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/**
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* getQueryCacheDriver
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*
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* @return Doctrine_Cache_Interface
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*/
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public function getQueryCacheDriver()
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{
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if ( ! $this->getAttribute(Doctrine::ATTR_QUERY_CACHE)) {
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throw new Doctrine_Exception('Query Cache driver not initialized.');
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}
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return $this->getAttribute(Doctrine::ATTR_QUERY_CACHE);
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}
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/**
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* Saves the given entity, persisting it's state.
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*
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* @param Doctrine::ORM::Entity $entity
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* @return void
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*/
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public function save(Doctrine_ORM_Entity $entity)
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{
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$this->_errorIfNotActiveOrClosed();
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$this->_unitOfWork->save($entity);
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if ($this->_flushMode == self::FLUSHMODE_IMMEDIATE) {
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$this->flush();
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}
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}
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/**
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* Removes the given entity from the persistent store.
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*
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* @param Doctrine::ORM::Entity $entity
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* @return void
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*/
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public function delete(Doctrine_ORM_Entity $entity)
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{
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$this->_errorIfNotActiveOrClosed();
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$this->_unitOfWork->delete($entity);
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if ($this->_flushMode == self::FLUSHMODE_IMMEDIATE) {
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$this->flush();
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}
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}
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/**
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* Refreshes the persistent state of the entity from the database,
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* overriding any local changes that have not yet been persisted.
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*
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* @param Doctrine::ORM::Entity $entity
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* @return void
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* @todo FIX Impl
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*/
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public function refresh(Doctrine_ORM_Entity $entity)
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{
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$this->_mergeData($entity, $entity->getRepository()->find(
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$entity->identifier(), Doctrine_Query::HYDRATE_ARRAY),
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true);
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}
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/**
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* Creates a copy of the given entity. Can create a shallow or a deep copy.
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*
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* @param Doctrine::ORM::Entity $entity The entity to copy.
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* @return Doctrine::ORM::Entity The new entity.
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*/
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public function copy(Doctrine_ORM_Entity $entity, $deep = false)
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{
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//...
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}
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/**
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* Gets the repository for an Entity.
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*
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* @param string $entityName The name of the Entity.
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* @return Doctrine::ORM::EntityRepository The repository.
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*/
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public function getRepository($entityName)
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{
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if (isset($this->_repositories[$entityName])) {
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return $this->_repositories[$entityName];
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}
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$metadata = $this->getClassMetadata($entityName);
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$customRepositoryClassName = $metadata->getCustomRepositoryClass();
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if ($customRepositoryClassName !== null) {
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$repository = new $customRepositoryClassName($entityName, $metadata);
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} else {
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$repository = new Doctrine_EntityRepository($entityName, $metadata);
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}
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$this->_repositories[$entityName] = $repository;
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return $repository;
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}
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/**
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* Creates an entity. Used for reconstitution as well as initial creation.
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*
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* @param string $className The name of the entity class.
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* @param array $data The data for the entity.
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* @return Doctrine::ORM::Entity
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*/
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public function createEntity($className, array $data)
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{
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$this->_errorIfNotActiveOrClosed();
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$this->_tmpEntityData = $data;
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$className = $this->_inferCorrectClassName($data, $className);
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$classMetadata = $this->getClassMetadata($className);
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if ( ! empty($data)) {
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$identifierFieldNames = $classMetadata->getIdentifier();
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$isNew = false;
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foreach ($identifierFieldNames as $fieldName) {
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if ( ! isset($data[$fieldName])) {
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// id field not found return new entity
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$isNew = true;
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break;
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}
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$id[] = $data[$fieldName];
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}
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if ($isNew) {
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$entity = new $className;
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} else {
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$idHash = $this->_unitOfWork->getIdentifierHash($id);
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if ($entity = $this->_unitOfWork->tryGetByIdHash($idHash,
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$classMetadata->getRootClassName())) {
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$this->_mergeData($entity, $data);
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return $entity;
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} else {
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$entity = new $className;
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$this->_unitOfWork->addToIdentityMap($entity);
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}
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}
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} else {
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$entity = new $className;
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}
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return $entity;
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}
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/**
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* Merges the given data into the given entity, optionally overriding
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* local changes.
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*
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* @param Doctrine::ORM::Entity $entity
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* @param array $data
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* @param boolean $overrideLocalChanges
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* @return void
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*/
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private function _mergeData(Doctrine_ORM_Entity $entity, array $data, $overrideLocalChanges = false) {
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if ($overrideLocalChanges) {
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foreach ($data as $field => $value) {
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$entity->_internalSetField($field, $value);
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}
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} else {
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foreach ($data as $field => $value) {
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$currentValue = $entity->get($field);
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if ( ! isset($currentValue) || $entity->_internalGetField($field) === null) {
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$entity->_internalSetField($field, $value);
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}
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}
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}
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}
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/**
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* Checks if the instance is managed by the EntityManager.
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*
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* @param Doctrine::ORM::Entity $entity
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* @return boolean TRUE if this EntityManager currently manages the given entity
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* (and has it in the identity map), FALSE otherwise.
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*/
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public function contains(Doctrine_ORM_Entity $entity)
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{
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return $this->_unitOfWork->isInIdentityMap($entity) &&
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! $this->_unitOfWork->isRegisteredRemoved($entity);
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}
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/**
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* INTERNAL: For internal hydration purposes only.
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*
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* Gets the temporarily stored entity data.
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*
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* @return array
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*/
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public function _getTmpEntityData()
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{
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$data = $this->_tmpEntityData;
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$this->_tmpEntityData = array();
|
|
return $data;
|
|
}
|
|
|
|
/**
|
|
* Check the dataset for a discriminator column to determine the correct
|
|
* class to instantiate. If no discriminator column is found, the given
|
|
* classname will be returned.
|
|
*
|
|
* @param array $data
|
|
* @param string $className
|
|
* @return string The name of the class to instantiate.
|
|
*/
|
|
private function _inferCorrectClassName(array $data, $className)
|
|
{
|
|
$class = $this->getClassMetadata($className);
|
|
|
|
$discCol = $class->getInheritanceOption('discriminatorColumn');
|
|
if ( ! $discCol) {
|
|
return $className;
|
|
}
|
|
|
|
$discMap = $class->getInheritanceOption('discriminatorMap');
|
|
|
|
if (isset($data[$discCol], $discMap[$data[$discCol]])) {
|
|
return $discMap[$data[$discCol]];
|
|
} else {
|
|
return $className;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the EventManager used by the EntityManager.
|
|
*
|
|
* @return Doctrine::Common::EventManager
|
|
*/
|
|
public function getEventManager()
|
|
{
|
|
return $this->_eventManager;
|
|
}
|
|
|
|
/**
|
|
* Gets the Configuration used by the EntityManager.
|
|
*
|
|
* @return Doctrine::Common::Configuration
|
|
*/
|
|
public function getConfiguration()
|
|
{
|
|
return $this->_config;
|
|
}
|
|
|
|
private function _errorIfNotActiveOrClosed()
|
|
{
|
|
if ( ! $this->isActive() || $this->_closed) {
|
|
throw Doctrine_EntityManagerException::notActiveOrClosed($this->_name);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Gets the UnitOfWork used by the EntityManager to coordinate operations.
|
|
*
|
|
* @return Doctrine::ORM::UnitOfWork
|
|
*/
|
|
public function getUnitOfWork()
|
|
{
|
|
return $this->_unitOfWork;
|
|
}
|
|
|
|
/**
|
|
* Checks whether this EntityManager is the currently active one.
|
|
*
|
|
* @return boolean
|
|
*/
|
|
public function isActive()
|
|
{
|
|
return self::$_activeEm === $this;
|
|
}
|
|
|
|
/**
|
|
* Makes this EntityManager the currently active one.
|
|
*
|
|
* @return void
|
|
*/
|
|
public function activate()
|
|
{
|
|
self::$_activeEm = $this;
|
|
}
|
|
|
|
/**
|
|
* Factory method to create EntityManager instances.
|
|
* A newly created EntityManager is immediately activated, making it the
|
|
* currently active EntityManager.
|
|
*
|
|
* @param mixed $conn An array with the connection parameters or an existing
|
|
* Doctrine::DBAL::Connection instance.
|
|
* @param string $name
|
|
* @param Doctrine::Common::Configuration $config The Configuration instance to use.
|
|
* @param Doctrine::Common::EventManager $eventManager The EventManager instance to use.
|
|
* @return Doctrine::ORM::EntityManager The created EntityManager.
|
|
*/
|
|
public static function create($conn, $name, Doctrine_Configuration $config = null,
|
|
Doctrine_EventManager $eventManager = null)
|
|
{
|
|
if (is_array($conn)) {
|
|
$connFactory = new Doctrine_DBAL_DriverManager();
|
|
$conn = $connFactory->getConnection($conn, $config, $eventManager);
|
|
} else if ( ! $conn instanceof Doctrine_Connection) {
|
|
throw new Doctrine_Exception("Invalid parameter '$conn'.");
|
|
}
|
|
|
|
if (is_null($config)) {
|
|
$config = new Doctrine_Configuration();
|
|
}
|
|
if (is_null($eventManager)) {
|
|
$eventManager = new Doctrine_EventManager();
|
|
}
|
|
|
|
$em = new Doctrine_EntityManager($conn, $name, $config, $eventManager);
|
|
$em->activate();
|
|
|
|
return $em;
|
|
}
|
|
|
|
/**
|
|
* Gets the currently active EntityManager.
|
|
*
|
|
* @return Doctrine::ORM::EntityManager
|
|
*/
|
|
public static function getActiveEntityManager()
|
|
{
|
|
return self::$_activeEm;
|
|
}
|
|
}
|
|
|
|
?>
|