411 lines
15 KiB
PHP
411 lines
15 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.doctrine-project.org>.
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*/
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namespace Doctrine\ORM\Persisters;
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use Doctrine\ORM\Mapping\ClassMetadata,
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Doctrine\ORM\PersistentCollection,
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Doctrine\ORM\UnitOfWork;
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/**
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* Persister for many-to-many collections.
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*
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* @author Roman Borschel <roman@code-factory.org>
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* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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* @author Alexander <iam.asm89@gmail.com>
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* @since 2.0
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*/
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class ManyToManyPersister extends AbstractCollectionPersister
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{
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/**
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* {@inheritdoc}
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*
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* @override
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*/
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protected function _getDeleteRowSQL(PersistentCollection $coll)
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{
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$mapping = $coll->getMapping();
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$class = $this->_em->getClassMetadata(get_class($coll->getOwner()));
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return 'DELETE FROM ' . $class->getQuotedJoinTableName($mapping, $this->_conn->getDatabasePlatform())
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. ' WHERE ' . implode(' = ? AND ', $mapping['joinTableColumns']) . ' = ?';
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}
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/**
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* {@inheritdoc}
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*
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* @override
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* @internal Order of the parameters must be the same as the order of the columns in
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* _getDeleteRowSql.
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*/
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protected function _getDeleteRowSQLParameters(PersistentCollection $coll, $element)
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{
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return $this->_collectJoinTableColumnParameters($coll, $element);
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}
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/**
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* {@inheritdoc}
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*
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* @override
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*/
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protected function _getUpdateRowSQL(PersistentCollection $coll)
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{}
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/**
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* {@inheritdoc}
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*
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* @override
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* @internal Order of the parameters must be the same as the order of the columns in
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* _getInsertRowSql.
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*/
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protected function _getInsertRowSQL(PersistentCollection $coll)
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{
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$mapping = $coll->getMapping();
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$columns = $mapping['joinTableColumns'];
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$class = $this->_em->getClassMetadata(get_class($coll->getOwner()));
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$joinTable = $class->getQuotedJoinTableName($mapping, $this->_conn->getDatabasePlatform());
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return 'INSERT INTO ' . $joinTable . ' (' . implode(', ', $columns) . ')'
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. ' VALUES (' . implode(', ', array_fill(0, count($columns), '?')) . ')';
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}
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/**
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* {@inheritdoc}
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*
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* @override
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* @internal Order of the parameters must be the same as the order of the columns in
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* _getInsertRowSql.
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*/
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protected function _getInsertRowSQLParameters(PersistentCollection $coll, $element)
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{
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return $this->_collectJoinTableColumnParameters($coll, $element);
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}
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/**
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* Collects the parameters for inserting/deleting on the join table in the order
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* of the join table columns as specified in ManyToManyMapping#joinTableColumns.
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*
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* @param $coll
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* @param $element
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* @return array
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*/
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private function _collectJoinTableColumnParameters(PersistentCollection $coll, $element)
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{
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$params = array();
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$mapping = $coll->getMapping();
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$isComposite = count($mapping['joinTableColumns']) > 2;
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$identifier1 = $this->_uow->getEntityIdentifier($coll->getOwner());
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$identifier2 = $this->_uow->getEntityIdentifier($element);
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if ($isComposite) {
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$class1 = $this->_em->getClassMetadata(get_class($coll->getOwner()));
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$class2 = $coll->getTypeClass();
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}
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foreach ($mapping['joinTableColumns'] as $joinTableColumn) {
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$isRelationToSource = isset($mapping['relationToSourceKeyColumns'][$joinTableColumn]);
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if ( ! $isComposite) {
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$params[] = $isRelationToSource ? array_pop($identifier1) : array_pop($identifier2);
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continue;
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}
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if ($isRelationToSource) {
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$params[] = $identifier1[$class1->getFieldForColumn($mapping['relationToSourceKeyColumns'][$joinTableColumn])];
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continue;
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}
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$params[] = $identifier2[$class2->getFieldForColumn($mapping['relationToTargetKeyColumns'][$joinTableColumn])];
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}
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return $params;
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}
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/**
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* {@inheritdoc}
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*
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* @override
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*/
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protected function _getDeleteSQL(PersistentCollection $coll)
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{
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$class = $this->_em->getClassMetadata(get_class($coll->getOwner()));
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$mapping = $coll->getMapping();
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return 'DELETE FROM ' . $class->getQuotedJoinTableName($mapping, $this->_conn->getDatabasePlatform())
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. ' WHERE ' . implode(' = ? AND ', array_keys($mapping['relationToSourceKeyColumns'])) . ' = ?';
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}
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/**
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* {@inheritdoc}
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*
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* @override
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* @internal Order of the parameters must be the same as the order of the columns in
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* _getDeleteSql.
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*/
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protected function _getDeleteSQLParameters(PersistentCollection $coll)
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{
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$identifier = $this->_uow->getEntityIdentifier($coll->getOwner());
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$mapping = $coll->getMapping();
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$params = array();
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// Optimization for single column identifier
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if (count($mapping['relationToSourceKeyColumns']) === 1) {
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$params[] = array_pop($identifier);
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return $params;
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}
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// Composite identifier
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$sourceClass = $this->_em->getClassMetadata(get_class($mapping->getOwner()));
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foreach ($mapping['relationToSourceKeyColumns'] as $relColumn => $srcColumn) {
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$params[] = $identifier[$sourceClass->fieldNames[$srcColumn]];
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}
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return $params;
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}
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/**
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* {@inheritdoc}
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*/
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public function count(PersistentCollection $coll)
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{
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$mapping = $filterMapping = $coll->getMapping();
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$class = $this->_em->getClassMetadata($mapping['sourceEntity']);
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$id = $this->_em->getUnitOfWork()->getEntityIdentifier($coll->getOwner());
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if ($mapping['isOwningSide']) {
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$joinColumns = $mapping['relationToSourceKeyColumns'];
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} else {
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$mapping = $this->_em->getClassMetadata($mapping['targetEntity'])->associationMappings[$mapping['mappedBy']];
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$joinColumns = $mapping['relationToTargetKeyColumns'];
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}
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$whereClauses = array();
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$params = array();
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foreach ($mapping['joinTableColumns'] as $joinTableColumn) {
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if ( ! isset($joinColumns[$joinTableColumn])) {
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continue;
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}
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$whereClauses[] = $joinTableColumn . ' = ?';
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$params[] = ($class->containsForeignIdentifier)
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? $id[$class->getFieldForColumn($joinColumns[$joinTableColumn])]
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: $id[$class->fieldNames[$joinColumns[$joinTableColumn]]];
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}
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list($joinTargetEntitySQL, $filterSql) = $this->getFilterSql($filterMapping);
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if ($filterSql) {
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$whereClauses[] = $filterSql;
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}
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$sql = 'SELECT COUNT(*)'
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. ' FROM ' . $class->getQuotedJoinTableName($mapping, $this->_conn->getDatabasePlatform()) . ' t'
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. $joinTargetEntitySQL
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. ' WHERE ' . implode(' AND ', $whereClauses);
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return $this->_conn->fetchColumn($sql, $params);
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}
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/**
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* @param PersistentCollection $coll
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* @param int $offset
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* @param int $length
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* @return array
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*/
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public function slice(PersistentCollection $coll, $offset, $length = null)
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{
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$mapping = $coll->getMapping();
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return $this->_em->getUnitOfWork()->getEntityPersister($mapping['targetEntity'])->getManyToManyCollection($mapping, $coll->getOwner(), $offset, $length);
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}
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/**
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* @param PersistentCollection $coll
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* @param object $element
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* @return boolean
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*/
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public function contains(PersistentCollection $coll, $element)
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{
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$uow = $this->_em->getUnitOfWork();
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// shortcut for new entities
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if ($uow->getEntityState($element, UnitOfWork::STATE_NEW) == UnitOfWork::STATE_NEW) {
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return false;
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}
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list($quotedJoinTable, $whereClauses, $params) = $this->getJoinTableRestrictions($coll, $element, true);
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$sql = 'SELECT 1 FROM ' . $quotedJoinTable . ' WHERE ' . implode(' AND ', $whereClauses);
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return (bool) $this->_conn->fetchColumn($sql, $params);
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}
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/**
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* @param PersistentCollection $coll
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* @param object $element
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* @return boolean
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*/
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public function removeElement(PersistentCollection $coll, $element)
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{
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$uow = $this->_em->getUnitOfWork();
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// shortcut for new entities
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if ($uow->getEntityState($element, UnitOfWork::STATE_NEW) == UnitOfWork::STATE_NEW) {
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return false;
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}
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list($quotedJoinTable, $whereClauses, $params) = $this->getJoinTableRestrictions($coll, $element, false);
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$sql = 'DELETE FROM ' . $quotedJoinTable . ' WHERE ' . implode(' AND ', $whereClauses);
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return (bool) $this->_conn->executeUpdate($sql, $params);
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}
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/**
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* @param \Doctrine\ORM\PersistentCollection $coll
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* @param object $element
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* @param boolean $addFilters Whether the filter SQL should be included or not.
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* @return array
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*/
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private function getJoinTableRestrictions(PersistentCollection $coll, $element, $addFilters)
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{
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$uow = $this->_em->getUnitOfWork();
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$mapping = $filterMapping = $coll->getMapping();
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if ( ! $mapping['isOwningSide']) {
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$sourceClass = $this->_em->getClassMetadata($mapping['targetEntity']);
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$targetClass = $this->_em->getClassMetadata($mapping['sourceEntity']);
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$sourceId = $uow->getEntityIdentifier($element);
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$targetId = $uow->getEntityIdentifier($coll->getOwner());
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$mapping = $sourceClass->associationMappings[$mapping['mappedBy']];
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} else {
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$sourceClass = $this->_em->getClassMetadata($mapping['sourceEntity']);
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$targetClass = $this->_em->getClassMetadata($mapping['targetEntity']);
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$sourceId = $uow->getEntityIdentifier($coll->getOwner());
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$targetId = $uow->getEntityIdentifier($element);
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}
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$quotedJoinTable = $sourceClass->getQuotedJoinTableName($mapping, $this->_conn->getDatabasePlatform());
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$whereClauses = array();
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$params = array();
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foreach ($mapping['joinTableColumns'] as $joinTableColumn) {
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$whereClauses[] = $joinTableColumn . ' = ?';
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if (isset($mapping['relationToTargetKeyColumns'][$joinTableColumn])) {
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$params[] = ($targetClass->containsForeignIdentifier)
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? $targetId[$targetClass->getFieldForColumn($mapping['relationToTargetKeyColumns'][$joinTableColumn])]
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: $targetId[$targetClass->fieldNames[$mapping['relationToTargetKeyColumns'][$joinTableColumn]]];
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continue;
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}
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// relationToSourceKeyColumns
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$params[] = ($sourceClass->containsForeignIdentifier)
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? $sourceId[$sourceClass->getFieldForColumn($mapping['relationToSourceKeyColumns'][$joinTableColumn])]
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: $sourceId[$sourceClass->fieldNames[$mapping['relationToSourceKeyColumns'][$joinTableColumn]]];
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}
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if ($addFilters) {
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list($joinTargetEntitySQL, $filterSql) = $this->getFilterSql($filterMapping);
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if ($filterSql) {
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$quotedJoinTable .= ' t ' . $joinTargetEntitySQL;
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$whereClauses[] = $filterSql;
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}
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}
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return array($quotedJoinTable, $whereClauses, $params);
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}
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/**
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* Generates the filter SQL for a given mapping.
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*
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* This method is not used for actually grabbing the related entities
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* but when the extra-lazy collection methods are called on a filtered
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* association. This is why besides the many to many table we also
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* have to join in the actual entities table leading to additional
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* JOIN.
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*
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* @param array $mapping Array containing mapping information.
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*
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* @return string The SQL query part to add to a query.
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*/
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public function getFilterSql($mapping)
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{
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$targetClass = $this->_em->getClassMetadata($mapping['targetEntity']);
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if ($mapping['isOwningSide']) {
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$joinColumns = $mapping['relationToTargetKeyColumns'];
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} else {
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$mapping = $targetClass->associationMappings[$mapping['mappedBy']];
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$joinColumns = $mapping['relationToSourceKeyColumns'];
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}
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$targetClass = $this->_em->getClassMetadata($targetClass->rootEntityName);
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// A join is needed if there is filtering on the target entity
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$joinTargetEntitySQL = '';
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if ($filterSql = $this->generateFilterConditionSQL($targetClass, 'te')) {
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$joinTargetEntitySQL = ' JOIN '
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. $targetClass->getQuotedTableName($this->_conn->getDatabasePlatform()) . ' te'
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. ' ON';
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$joinTargetEntitySQLClauses = array();
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foreach ($joinColumns as $joinTableColumn => $targetTableColumn) {
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$joinTargetEntitySQLClauses[] = ' t.' . $joinTableColumn . ' = ' . 'te.' . $targetTableColumn;
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}
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$joinTargetEntitySQL .= implode(' AND ', $joinTargetEntitySQLClauses);
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}
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return array($joinTargetEntitySQL, $filterSql);
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}
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/**
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* Generates the filter SQL for a given entity and table alias.
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*
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* @param ClassMetadata $targetEntity Metadata of the target entity.
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* @param string $targetTableAlias The table alias of the joined/selected table.
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*
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* @return string The SQL query part to add to a query.
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*/
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protected function generateFilterConditionSQL(ClassMetadata $targetEntity, $targetTableAlias)
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{
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$filterClauses = array();
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foreach ($this->_em->getFilters()->getEnabledFilters() as $filter) {
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if ($filterExpr = $filter->addFilterConstraint($targetEntity, $targetTableAlias)) {
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$filterClauses[] = '(' . $filterExpr . ')';
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}
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}
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$sql = implode(' AND ', $filterClauses);
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return $sql ? "(" . $sql . ")" : "";
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}
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}
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