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

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<?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>.
*/
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namespace Doctrine\ORM\Persisters;
use Doctrine\ORM\PersistentCollection,
Doctrine\ORM\UnitOfWork;
/**
* Persister for one-to-many collections.
*
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* IMPORTANT:
* This persister is only used for uni-directional one-to-many mappings on a foreign key
* (which are not yet supported). So currently this persister is not used.
*
* @since 2.0
* @author Roman Borschel <roman@code-factory.org>
* @todo Remove
*/
class OneToManyPersister extends AbstractCollectionPersister
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{
/**
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* Generates the SQL UPDATE that updates a particular row's foreign
* key to null.
*
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* @param PersistentCollection $coll
* @return string
* @override
*/
protected function _getDeleteRowSQL(PersistentCollection $coll)
{
$mapping = $coll->getMapping();
$targetClass = $this->_em->getClassMetadata($mapping->getTargetEntityName());
$table = $targetClass->getTableName();
$ownerMapping = $targetClass->getAssociationMapping($mapping['mappedBy']);
$setClause = '';
foreach ($ownerMapping->sourceToTargetKeyColumns as $sourceCol => $targetCol) {
if ($setClause != '') $setClause .= ', ';
$setClause .= "$sourceCol = NULL";
}
$whereClause = '';
foreach ($targetClass->getIdentifierColumnNames() as $idColumn) {
if ($whereClause != '') $whereClause .= ' AND ';
$whereClause .= "$idColumn = ?";
}
return array("UPDATE $table SET $setClause WHERE $whereClause", $this->_uow->getEntityIdentifier($element));
}
protected function _getInsertRowSQL(PersistentCollection $coll)
{
return "UPDATE xxx SET foreign_key = yyy WHERE foreign_key = zzz";
}
/* Not used for OneToManyPersister */
protected function _getUpdateRowSQL(PersistentCollection $coll)
{
return;
}
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/**
* Generates the SQL UPDATE that updates all the foreign keys to null.
*
* @param PersistentCollection $coll
*/
protected function _getDeleteSQL(PersistentCollection $coll)
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{
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}
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/**
* Gets the SQL parameters for the corresponding SQL statement to delete
* the given collection.
*
* @param PersistentCollection $coll
*/
protected function _getDeleteSQLParameters(PersistentCollection $coll)
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{}
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/**
* 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)
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{}
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/**
* Gets the SQL parameters for the corresponding SQL statement to delete the given
* element from the given collection.
*
* @param PersistentCollection $coll
* @param mixed $element
*/
protected function _getDeleteRowSQLParameters(PersistentCollection $coll, $element)
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{}
/**
* {@inheritdoc}
*/
public function count(PersistentCollection $coll)
{
$mapping = $coll->getMapping();
$class = $this->_em->getClassMetadata($mapping['targetEntity']);
$params = array();
$id = $this->_em->getUnitOfWork()->getEntityIdentifier($coll->getOwner());
$where = '';
foreach ($class->associationMappings[$mapping['mappedBy']]['joinColumns'] AS $joinColumn) {
if ($where != '') {
$where .= ' AND ';
}
$where .= $joinColumn['name'] . " = ?";
if ($class->containsForeignIdentifier) {
$params[] = $id[$class->getFieldForColumn($joinColumn['referencedColumnName'])];
} else {
$params[] = $id[$class->fieldNames[$joinColumn['referencedColumnName']]];
}
}
$sql = "SELECT count(*) FROM " . $class->getQuotedTableName($this->_conn->getDatabasePlatform()) . " WHERE " . $where;
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();
return $this->_em->getUnitOfWork()
->getEntityPersister($mapping['targetEntity'])
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->getOneToManyCollection($mapping, $coll->getOwner(), $offset, $length);
}
/**
* @param PersistentCollection $coll
* @param object $element
*/
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;
}
// 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 $uow->getEntityPersister($mapping['targetEntity'])
->exists($element, array($mapping['mappedBy'] => $id));
}
}