72 lines
2.7 KiB
PHP
72 lines
2.7 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.org>.
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*/
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namespace Doctrine\ORM\Query\Exec;
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/**
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* Executes the SQL statements for bulk DQL DELETE statements on classes in
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* Class Table Inheritance (JOINED).
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*
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* @author Roman Borschel <roman@code-factory.org>
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* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
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* @link http://www.phpdoctrine.org
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* @since 2.0
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* @version $Revision$
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* @todo For a good implementation that uses temporary tables see the Hibernate sources:
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* (org.hibernate.hql.ast.exec.MultiTableDeleteExecutor).
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* @todo Rename to MultiTableDeleteExecutor
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*/
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class MultiTableDeleteExecutor extends AbstractExecutor
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{
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/**
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* Enter description here...
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*
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* @param Doctrine_ORM_Query_AST $AST
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*/
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public function __construct(\Doctrine\ORM\Query\AST $AST)
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{
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// 1. Create a INSERT INTO temptable ... VALUES ( SELECT statement where the SELECT statement
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// selects the identifiers and uses the WhereClause of the $AST.
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// 2. Create ID subselect statement used in DELETE .... WHERE ... IN (subselect)
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// 3. Create and store DELETE statements
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/*$subselect = 'SELECT id1, id2 FROM temptable';
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foreach ($tableNames as $tableName) {
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$this->_sqlStatements[] = 'DELETE FROM ' . $tableName . ' WHERE (id1, id2) IN (subselect)';
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}*/
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// in $this->_sqlStatements
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}
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/**
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* Executes all sql statements.
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*
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* @param Doctrine_Connection $conn The database connection that is used to execute the queries.
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* @param array $params The parameters.
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* @override
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*/
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public function execute(\Doctrine\DBAL\Connection $conn, array $params)
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{
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// 1. Create temporary id table if necessary
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//...
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}
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} |