92 lines
3.2 KiB
PHP
92 lines
3.2 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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* FieldIdentificationVariable = 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 2.0
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* @version $Revision$
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*/
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class Doctrine_Query_Production_FieldIdentificationVariable extends Doctrine_Query_Production
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{
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protected $_fieldAlias;
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protected $_columnAlias;
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public function syntax($paramHolder)
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{
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// FieldIdentificationVariable = identifier
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$this->_parser->match(Doctrine_Query_Token::T_IDENTIFIER);
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$this->_fieldAlias = $this->_parser->token['value'];
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}
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public function semantical($paramHolder)
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{
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$parserResult = $this->_parser->getParserResult();
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if ($parserResult->hasQueryField($this->_fieldAlias)) {
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// We should throw semantical error if there's already a component for this alias
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$fieldName = $parserResult->getQueryField($this->_fieldAlias);
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$message = "Cannot re-declare field alias '{$this->_fieldAlias}'"
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. "for '".$paramHolder->get('fieldName')."'.";
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$this->_parser->semanticalError($message);
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}
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// Now we map it in queryComponent
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$componentAlias = Doctrine_Query_Production::DEFAULT_QUERYCOMPONENT;
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$queryComponent = $parserResult->getQueryComponent($componentAlias);
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$idx = count($queryComponent['scalar']);
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$queryComponent['scalar'][$idx] = $this->_fieldAlias;
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$parserResult->setQueryComponent($componentAlias, $queryComponent);
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// And also in field aliases
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$parserResult->setQueryField($queryComponent['scalar'][$idx], $idx);
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// Build the column alias
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$this->_columnAlias = $parserResult->getTableAliasFromComponentAlias($componentAlias)
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. Doctrine_Query_Production::SQLALIAS_SEPARATOR . $idx;
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}
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/* Getters */
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public function getFieldAlias()
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{
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return $this->_fieldAlias;
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}
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public function getColumnAlias()
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{
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return $this->_columnAlias;
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}
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}
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