115 lines
3.7 KiB
PHP
115 lines
3.7 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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/**
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* Doctrine_Query_QueryResult
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*
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* @package Doctrine
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* @subpackage Query
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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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*/
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abstract class Doctrine_Query_SqlExecutor_Abstract implements Serializable
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{
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// [TODO] Remove me later!
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public $AST;
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protected $_sqlStatements;
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public function __construct(Doctrine_Query_Production $AST)
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{
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// [TODO] Remove me later!
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$this->AST = $AST;
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}
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/**
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* Gets the SQL statements that are executed by the executor.
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*
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* @return array All the SQL update statements.
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*/
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public function getSqlStatements()
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{
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return $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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*/
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abstract public function execute(Doctrine_Connection $conn, array $params);
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/**
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* Factory method.
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* Creates an appropriate sql executor for the given AST.
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*
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* @param Doctrine_Query_Production $AST The root node of the AST.
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* @return Doctrine_Query_SqlExecutor_Abstract The executor that is suitable for the given AST.
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*/
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public static function create(Doctrine_Query_Production $AST)
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{
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$isDeleteStatement = $AST instanceof Doctrine_Query_Production_DeleteStatement;
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$isUpdateStatement = $AST instanceof Doctrine_Query_Production_UpdateStatement;
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if ($isUpdateStatement || $isDeleteStatement) {
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// TODO: Inspect the $AST and create the proper executor like so (pseudo-code):
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/*
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if (primaryClassInFromClause->isMultiTable()) {
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if ($isDeleteStatement) {
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return new Doctrine_Query_SqlExecutor_MultiTableDelete($AST);
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} else {
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return new Doctrine_Query_SqlExecutor_MultiTableUpdate($AST);
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}
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} else ...
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*/
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return new Doctrine_Query_SqlExecutor_SingleTableDeleteUpdate($AST);
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} else {
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return new Doctrine_Query_SqlExecutor_SingleSelect($AST);
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}
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}
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/**
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* Serializes the sql statements of the executor.
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*
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* @return string
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*/
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public function serialize()
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{
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return serialize($this->_sqlStatements);
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}
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/**
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* Reconstructs the executor with it's sql statements.
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*/
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public function unserialize($serialized)
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{
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$this->_sqlStatements = unserialize($serialized);
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}
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} |