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doctrine2/lib/Doctrine/Relation/ForeignKey.php
2007-02-17 12:38:02 +00:00

108 lines
3.8 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.phpdoctrine.com>.
*/
Doctrine::autoload('Doctrine_Relation');
/**
* Doctrine_Relation_ForeignKey
* This class represents a foreign key relation
*
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @package Doctrine
* @category Object Relational Mapping
* @link www.phpdoctrine.com
* @since 1.0
* @version $Revision$
*/
class Doctrine_Relation_ForeignKey extends Doctrine_Relation
{
/**
* processDiff
*
* @param Doctrine_Record $record
* @return void
*/
public function processDiff(Doctrine_Record $record)
{
$alias = $this->getAlias();
if ($this->isOneToOne()) {
if ($record->obtainOriginals($alias)
&& $record->obtainOriginals($alias)->obtainIdentifier() != $this->obtainReference($alias)->obtainIdentifier()
) {
$record->obtainOriginals($alias)->delete();
}
} else {
if ($record->hasReference($alias)) {
$new = $record->obtainReference($alias);
if ( ! $record->obtainOriginals($alias)) {
$record->loadReference($alias);
}
$operations = Doctrine_Relation::getDeleteOperations($record->obtainOriginals($alias), $new);
foreach ($operations as $r) {
$r->delete();
}
$record->assignOriginals($alias, clone $record->get($alias));
}
}
}
/**
* fetchRelatedFor
*
* fetches a component related to given record
*
* @param Doctrine_Record $record
* @return Doctrine_Record|Doctrine_Collection
*/
public function fetchRelatedFor(Doctrine_Record $record)
{
$id = $record->get($this->definition['local']);
if ($this->isOneToOne()) {
if (empty($id)) {
$related = $this->getTable()->create();
} else {
$dql = 'FROM ' . $this->getTable()->getComponentName()
. ' WHERE ' . $this->getTable()->getComponentName()
. '.' . $this->definition['foreign'] . ' = ?';
$coll = $this->getTable()->getConnection()->query($dql, array($id));
$related = $coll[0];
}
$related->set($this->definition['foreign'], $record, false);
} else {
if (empty($id)) {
$related = new Doctrine_Collection($this->getTable());
} else {
$query = $this->getRelationDql(1);
$related = $this->getTable()->getConnection()->query($query, array($id));
}
$related->setReference($record, $this);
}
return $related;
}
}