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<?php
/*
* $Id: ForeignKey.php 7490 2010-03-29 19:53:27Z jwage $
*
* 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>.
*/
/**
* Doctrine_Relation_ForeignKey
* This class represents a foreign key relation
*
* @package Doctrine
* @subpackage Relation
* @author Konsta Vesterinen <kvesteri@cc.hut.fi>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 1.0
* @version $Revision: 7490 $
*/
class Doctrine_Relation_ForeignKey extends Doctrine_Relation
{
/**
* fetchRelatedFor
*
* fetches a component related to given record
*
* @param Doctrine_Record $record
* @return Doctrine_Record|Doctrine_Collection
*/
public function fetchRelatedFor(Doctrine_Record $record)
{
$id = array();
$localTable = $record->getTable();
foreach ((array) $this->definition['local'] as $local) {
$value = $record->get($localTable->getFieldName($local));
if (isset($value)) {
$id[] = $value;
}
}
if ($this->isOneToOne()) {
if ( ! $record->exists() || empty($id) ||
! $this->definition['table']->getAttribute(Doctrine_Core::ATTR_LOAD_REFERENCES)) {
$related = $this->getTable()->create();
} else {
$dql = 'FROM ' . $this->getTable()->getComponentName()
. ' WHERE ' . $this->getCondition() . $this->getOrderBy(null, false);
$coll = $this->getTable()->getConnection()->query($dql, $id);
$related = $coll[0];
}
$related->set($related->getTable()->getFieldName($this->definition['foreign']),
$record, false);
} else {
if ( ! $record->exists() || empty($id) ||
! $this->definition['table']->getAttribute(Doctrine_Core::ATTR_LOAD_REFERENCES)) {
$related = Doctrine_Collection::create($this->getTable());
} else {
$query = $this->getRelationDql(1);
$related = $this->getTable()->getConnection()->query($query, $id);
}
$related->setReference($record, $this);
}
return $related;
}
/**
* getCondition
*
* @param string $alias
*/
public function getCondition($alias = null)
{
if ( ! $alias) {
$alias = $this->getTable()->getComponentName();
}
$conditions = array();
foreach ((array) $this->definition['foreign'] as $foreign) {
$conditions[] = $alias . '.' . $foreign . ' = ?';
}
return implode(' AND ', $conditions);
}
}
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