146 lines
5.5 KiB
PHP
146 lines
5.5 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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* PathExpression = identifier { "." identifier }
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*
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* @package Doctrine
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* @subpackage Query
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* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
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* @author Janne Vanhala <jpvanhal@cc.hut.fi>
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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 1.0
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* @version $Revision$
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*/
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class Doctrine_Query_Production_PathExpression extends Doctrine_Query_Production
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{
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protected $_identifiers = array();
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protected $_fieldName;
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protected $_componentAlias;
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public function syntax($paramHolder)
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{
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$this->_parser->match(Doctrine_Query_Token::T_IDENTIFIER);
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$this->_identifiers[] = $this->_parser->token['value'];
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while ($this->_isNextToken('.')) {
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$this->_parser->match('.');
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$this->_parser->match(Doctrine_Query_Token::T_IDENTIFIER);
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$this->_identifiers[] = $this->_parser->token['value'];
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}
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$this->_fieldName = array_pop($this->_identifiers);
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}
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public function semantical($paramHolder)
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{
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$parserResult = $this->_parser->getParserResult();
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$classMetadata = null;
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if (($l = count($this->_identifiers)) == 0) {
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// No metadata selection until now. We might need to deal with:
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// DELETE FROM Obj alias WHERE field = X
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$queryComponents = $parserResult->getQueryComponents();
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// Check if we have more than one queryComponent defined
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if (count($queryComponents) != 2) {
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$this->_parser->semanticalError("Undefined component alias for field '{$this->_fieldName}'", $this->_parser->token);
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}
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// Retrieve ClassMetadata
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$k = array_keys($queryComponents);
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$this->_componentAlias = $k[1];
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$classMetadata = $queryComponents[$this->_componentAlias]['metadata'];
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} else {
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$this->_componentAlias = $path = $this->_identifiers[0];
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$queryComponent = $parserResult->getQueryComponent($path);
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// We should have a semantical error if the queryComponent does not exists yet
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if ($queryComponent === null) {
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$this->_parser->semanticalError("Undefined component alias for '{$path}'", $this->_parser->token);
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}
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// Initializing ClassMetadata
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$classMetadata = $queryComponent['metadata'];
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// Looping through relations
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for ($i = 1; $i < $l; $i++) {
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$relationName = $this->_identifiers[$i];
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$path .= '.' . $relationName;
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if ( ! $classMetadata->hasRelation($relationName)) {
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$className = $classMetadata->getClassName();
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$this->_parser->semanticalError(
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"Relation '{$relationName}' does not exist in component '{$className}' when trying to get the path '{$path}'",
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$this->_parser->token
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);
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}
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// We inspect for queryComponent of relations, since we are using them
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if ( ! $parserResult->hasQueryComponent($path)) {
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$this->_parser->semanticalError("Cannot use the path '{$path}' without defining it in FROM.", $this->_parser->token);
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}
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// Assigning new componentAlias, queryComponent and classMetadata
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$this->_componentAlias = $path;
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$queryComponent = $parserResult->getQueryComponent($path);
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$classMetadata = $queryComponent['metadata'];
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}
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}
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// Now we inspect for field existance
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if ( ! $classMetadata->hasField($this->_fieldName)) {
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$className = $classMetadata->getClassName();
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$this->_parser->semanticalError("Field '{$this->_fieldName}' does not exist in component '{$className}'", $this->_parser->token);
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}
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}
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public function buildSql()
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{
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// Basic handy variables
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$parserResult = $this->_parser->getParserResult();
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// Retrieving connection
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$manager = Doctrine_EntityManager::getManager();
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$conn = $manager->getConnection();
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// Looking for queryComponent to fetch
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$queryComponent = $parserResult->getQueryComponent($this->_componentAlias);
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// Generating the SQL piece
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$str = $parserResult->getTableAliasFromComponentAlias($this->_componentAlias) . '.'
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. $queryComponent['metadata']->getColumnName($this->_fieldName);
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return $conn->quoteIdentifier($str);
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}
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}
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