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doctrine2/lib/Doctrine/Relation/Association.php

140 lines
5.4 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_Relation_Association this class takes care of association mapping
* (= many-to-many relationships, where the relationship is handled with an additional relational table
* which holds 2 foreign keys)
*
*
* @package Doctrine ORM
* @url www.phpdoctrine.com
* @license LGPL
*/
class Doctrine_Relation_Association extends Doctrine_Relation {
/**
* @var Doctrine_Table $associationTable
*/
protected $associationTable;
/**
* the constructor
* @param Doctrine_Table $table foreign factory object
* @param Doctrine_Table $associationTable factory which handles the association
* @param string $local local field name
* @param string $foreign foreign field name
* @param integer $type type of relation
* @see Doctrine_Table constants
*/
public function __construct(Doctrine_Table $table, Doctrine_Table $associationTable, $local, $foreign, $type, $alias) {
parent::__construct($table, $local, $foreign, $type, $alias);
$this->associationTable = $associationTable;
}
/**
* @return Doctrine_Table
*/
public function getAssociationFactory() {
return $this->associationTable;
}
/**
* processDiff
*
* @param Doctrine_Record
*/
public function processDiff(Doctrine_Record $record) {
$asf = $this->getAssociationFactory();
$alias = $this->getAlias();
if($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) {
$query = 'DELETE FROM ' . $asf->getTableName()
. ' WHERE ' . $this->getForeign() . ' = ?'
. ' AND ' . $this->getLocal() . ' = ?';
$this->getTable()->getConnection()->execute($query, array($r->getIncremented(),$record->getIncremented()));
}
$operations = Doctrine_Relation::getInsertOperations($record->obtainOriginals($alias),$new);
foreach($operations as $r) {
$reldao = $asf->create();
$reldao->set($this->getForeign(), $r);
$reldao->set($this->getLocal(), $record);
$reldao->save();
}
$record->assignOriginals($alias, clone $record->get($alias));
}
}
/**
* getRelationDql
*
* @param integer $count
* @return string
*/
public function getRelationDql($count, $context = 'record') {
switch($context):
case "record":
$sub = 'SQL:SELECT ' . $this->foreign.
' FROM ' . $this->associationTable->getTableName().
' WHERE ' . $this->local.
' IN (' . substr(str_repeat("?, ", $count),0,-2) .
')';
$dql = "FROM ".$this->table->getComponentName();
$dql .= ".".$this->associationTable->getComponentName();
$dql .= " WHERE ".$this->table->getComponentName().".".$this->table->getIdentifier()." IN ($sub)";
break;
case "collection":
$sub = substr(str_repeat("?, ", $count),0,-2);
$dql = "FROM ".$this->associationTable->getComponentName().".".$this->table->getComponentName();
$dql .= " WHERE ".$this->associationTable->getComponentName().".".$this->local." IN ($sub)";
endswitch;
return $dql;
}
/**
* fetchRelatedFor
*
* fetches a component related to given record
*
* @param Doctrine_Record $record
* @return Doctrine_Record|Doctrine_Collection
*/
public function fetchRelatedFor(Doctrine_Record $record) {
$id = $record->getIncremented();
if(empty($id))
$coll = new Doctrine_Collection($this->table);
else
$coll = Doctrine_Query::create()->parseQuery($this->getRelationDql(1))->execute(array($id));
return $coll;
}
}