140 lines
5.4 KiB
PHP
140 lines
5.4 KiB
PHP
<?php
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/*
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* $Id$
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* This software consists of voluntary contributions made by many individuals
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* and is licensed under the LGPL. For more information, see
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* <http://www.phpdoctrine.com>.
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*/
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/**
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* Doctrine_Relation_Association this class takes care of association mapping
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* (= many-to-many relationships, where the relationship is handled with an additional relational table
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* which holds 2 foreign keys)
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*
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*
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* @package Doctrine ORM
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* @url www.phpdoctrine.com
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* @license LGPL
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*/
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class Doctrine_Relation_Association extends Doctrine_Relation {
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/**
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* @var Doctrine_Table $associationTable
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*/
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protected $associationTable;
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/**
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* the constructor
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* @param Doctrine_Table $table foreign factory object
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* @param Doctrine_Table $associationTable factory which handles the association
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* @param string $local local field name
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* @param string $foreign foreign field name
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* @param integer $type type of relation
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* @see Doctrine_Table constants
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*/
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public function __construct(Doctrine_Table $table, Doctrine_Table $associationTable, $local, $foreign, $type, $alias) {
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parent::__construct($table, $local, $foreign, $type, $alias);
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$this->associationTable = $associationTable;
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}
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/**
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* @return Doctrine_Table
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*/
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public function getAssociationFactory() {
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return $this->associationTable;
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}
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/**
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* processDiff
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*
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* @param Doctrine_Record
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*/
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public function processDiff(Doctrine_Record $record) {
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$asf = $this->getAssociationFactory();
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$alias = $this->getAlias();
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if($record->hasReference($alias)) {
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$new = $record->obtainReference($alias);
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if( ! $record->obtainOriginals($alias))
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$record->loadReference($alias);
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$operations = Doctrine_Relation::getDeleteOperations($record->obtainOriginals($alias), $new);
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foreach($operations as $r) {
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$query = 'DELETE FROM ' . $asf->getTableName()
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. ' WHERE ' . $this->getForeign() . ' = ?'
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. ' AND ' . $this->getLocal() . ' = ?';
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$this->getTable()->getConnection()->execute($query, array($r->getIncremented(),$record->getIncremented()));
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}
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$operations = Doctrine_Relation::getInsertOperations($record->obtainOriginals($alias),$new);
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foreach($operations as $r) {
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$reldao = $asf->create();
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$reldao->set($this->getForeign(), $r);
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$reldao->set($this->getLocal(), $record);
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$reldao->save();
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}
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$record->assignOriginals($alias, clone $record->get($alias));
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}
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}
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/**
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* getRelationDql
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*
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* @param integer $count
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* @return string
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*/
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public function getRelationDql($count, $context = 'record') {
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switch($context):
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case "record":
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$sub = 'SQL:SELECT ' . $this->foreign.
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' FROM ' . $this->associationTable->getTableName().
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' WHERE ' . $this->local.
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' IN (' . substr(str_repeat("?, ", $count),0,-2) .
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')';
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$dql = "FROM ".$this->table->getComponentName();
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$dql .= ".".$this->associationTable->getComponentName();
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$dql .= " WHERE ".$this->table->getComponentName().".".$this->table->getIdentifier()." IN ($sub)";
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break;
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case "collection":
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$sub = substr(str_repeat("?, ", $count),0,-2);
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$dql = "FROM ".$this->associationTable->getComponentName().".".$this->table->getComponentName();
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$dql .= " WHERE ".$this->associationTable->getComponentName().".".$this->local." IN ($sub)";
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endswitch;
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return $dql;
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}
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/**
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* fetchRelatedFor
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*
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* fetches a component related to given record
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*
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* @param Doctrine_Record $record
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* @return Doctrine_Record|Doctrine_Collection
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*/
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public function fetchRelatedFor(Doctrine_Record $record) {
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$id = $record->getIncremented();
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if(empty($id))
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$coll = new Doctrine_Collection($this->table);
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else
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$coll = Doctrine_Query::create()->parseQuery($this->getRelationDql(1))->execute(array($id));
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return $coll;
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}
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}
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