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doctrine2/lib/Doctrine/Association.php
2006-09-26 15:00:13 +00:00

83 lines
3.4 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_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_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;
}
/**
* getRelationDql
*
* @param integer $count
* @return string
*/
public function getRelationDql($count, $context = 'record') {
switch($context):
case "record":
$sub = "SELECT ".$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;
}
}