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doctrine2/lib/Doctrine/ORM/Persisters/OneToManyPersister.php

192 lines
6.5 KiB
PHP

<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.doctrine-project.org>.
*/
namespace Doctrine\ORM\Persisters;
use Doctrine\ORM\PersistentCollection,
Doctrine\ORM\UnitOfWork;
/**
* Persister for one-to-many collections.
*
* @author Roman Borschel <roman@code-factory.org>
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @since 2.0
*/
class OneToManyPersister extends AbstractCollectionPersister
{
/**
* Generates the SQL UPDATE that updates a particular row's foreign
* key to null.
*
* @param PersistentCollection $coll
* @return string
* @override
*/
protected function _getDeleteRowSQL(PersistentCollection $coll)
{
$mapping = $coll->getMapping();
$class = $this->_em->getClassMetadata($mapping['targetEntity']);
return 'DELETE FROM ' . $class->getQuotedTableName($this->_conn->getDatabasePlatform())
. ' WHERE ' . implode('= ? AND ', $class->getIdentifierColumnNames()) . ' = ?';
}
/**
* {@inheritdoc}
*
*/
protected function _getDeleteRowSQLParameters(PersistentCollection $coll, $element)
{
return array_values($this->_uow->getEntityIdentifier($element));
}
protected function _getInsertRowSQL(PersistentCollection $coll)
{
return "UPDATE xxx SET foreign_key = yyy WHERE foreign_key = zzz";
}
/**
* Gets the SQL parameters for the corresponding SQL statement to insert the given
* element of the given collection into the database.
*
* @param PersistentCollection $coll
* @param mixed $element
*/
protected function _getInsertRowSQLParameters(PersistentCollection $coll, $element)
{}
/* Not used for OneToManyPersister */
protected function _getUpdateRowSQL(PersistentCollection $coll)
{
return;
}
/**
* Generates the SQL UPDATE that updates all the foreign keys to null.
*
* @param PersistentCollection $coll
*/
protected function _getDeleteSQL(PersistentCollection $coll)
{
}
/**
* Gets the SQL parameters for the corresponding SQL statement to delete
* the given collection.
*
* @param PersistentCollection $coll
*/
protected function _getDeleteSQLParameters(PersistentCollection $coll)
{}
/**
* {@inheritdoc}
*/
public function count(PersistentCollection $coll)
{
$mapping = $coll->getMapping();
$targetClass = $this->_em->getClassMetadata($mapping['targetEntity']);
$sourceClass = $this->_em->getClassMetadata($mapping['sourceEntity']);
$id = $this->_em->getUnitOfWork()->getEntityIdentifier($coll->getOwner());
$whereClauses = array();
$params = array();
foreach ($targetClass->associationMappings[$mapping['mappedBy']]['joinColumns'] AS $joinColumn) {
$whereClauses[] = $joinColumn['name'] . ' = ?';
$params[] = ($targetClass->containsForeignIdentifier)
? $id[$sourceClass->getFieldForColumn($joinColumn['referencedColumnName'])]
: $id[$sourceClass->fieldNames[$joinColumn['referencedColumnName']]];
}
$sql = 'SELECT count(*)'
. ' FROM ' . $targetClass->getQuotedTableName($this->_conn->getDatabasePlatform())
. ' WHERE ' . implode(' AND ', $whereClauses);
return $this->_conn->fetchColumn($sql, $params);
}
/**
* @param PersistentCollection $coll
* @param int $offset
* @param int $length
* @return \Doctrine\Common\Collections\ArrayCollection
*/
public function slice(PersistentCollection $coll, $offset, $length = null)
{
$mapping = $coll->getMapping();
$uow = $this->_em->getUnitOfWork();
$persister = $uow->getEntityPersister($mapping['targetEntity']);
return $persister->getOneToManyCollection($mapping, $coll->getOwner(), $offset, $length);
}
/**
* @param PersistentCollection $coll
* @param object $element
* @return boolean
*/
public function contains(PersistentCollection $coll, $element)
{
$mapping = $coll->getMapping();
$uow = $this->_em->getUnitOfWork();
// shortcut for new entities
if ($uow->getEntityState($element, UnitOfWork::STATE_NEW) == UnitOfWork::STATE_NEW) {
return false;
}
$persister = $uow->getEntityPersister($mapping['targetEntity']);
// only works with single id identifier entities. Will throw an
// exception in Entity Persisters if that is not the case for the
// 'mappedBy' field.
$id = current( $uow->getEntityIdentifier($coll->getOwner()) );
return $persister->exists($element, array($mapping['mappedBy'] => $id));
}
/**
* @param PersistentCollection $coll
* @param object $element
* @return boolean
*/
public function removeElement(PersistentCollection $coll, $element)
{
$uow = $this->_em->getUnitOfWork();
// shortcut for new entities
if ($uow->getEntityState($element, UnitOfWork::STATE_NEW) == UnitOfWork::STATE_NEW) {
return false;
}
$mapping = $coll->getMapping();
$class = $this->_em->getClassMetadata($mapping['targetEntity']);
$sql = 'DELETE FROM ' . $class->getQuotedTableName($this->_conn->getDatabasePlatform())
. ' WHERE ' . implode('= ? AND ', $class->getIdentifierColumnNames()) . ' = ?';
return (bool) $this->_conn->executeUpdate($sql, $this->_getDeleteRowSQLParameters($coll, $element));
}
}