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doctrine2/lib/Doctrine/ORM/Query/Parser/RangeVariableDeclaration.php
guilhermeblanco 4e62d4a98b More refactorings under DQL Parser/AST classes.
Implemented new classes. Fixed a couple of issues around the road.
2009-01-15 03:26:42 +00:00

94 lines
3.8 KiB
PHP

<?php
/*
* $Id$
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* This software consists of voluntary contributions made by many individuals
* and is licensed under the LGPL. For more information, see
* <http://www.phpdoctrine.org>.
*/
/**
* RangeVariableDeclaration ::= AbstractSchemaName ["AS"] AliasIdentificationVariable
*
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Janne Vanhala <jpvanhal@cc.hut.fi>
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link http://www.phpdoctrine.org
* @since 1.0
* @version $Revision$
*/
class Doctrine_ORM_Query_Parser_RangeVariableDeclaration extends Doctrine_ORM_Query_ParserRule
{
protected $_AST = null;
public function syntax()
{
// RangeVariableDeclaration ::= AbstractSchemaName ["AS"] AliasIdentificationVariable
$this->_AST = $this->AST('RangeVariableDeclaration');
$this->_AST->setAbstractSchemaName($this->parse('AbstractSchemaName'));
if ($this->_isNextToken(Doctrine_ORM_Query_Token::T_AS)) {
$this->_parser->match(Doctrine_ORM_Query_Token::T_AS);
}
$this->_AST->setAliasIdentificationVariable($this->parse('AliasIdentificationVariable'));
}
public function semantical()
{
$parserResult = $this->_parser->getParserResult();
$componentName = $this->_AST->getAbstractSchemaName();
$componentAlias = $this->_AST->getAliasIdentificationVariable();
// Check if we already have a component defined without an alias
if ($componentAlias === null && $parserResult->hasQueryComponent($componentName)) {
$this->_parser->semanticalError(
"Cannot re-declare component '{$componentName}'. Please assign an alias to it."
);
// Define new queryComponent since it does not exist yet
} else {
// Retrieving ClassMetadata and Mapper
try {
$classMetadata = $this->_em->getClassMetadata($componentName);
// Building queryComponent
$queryComponent = array(
'metadata' => $classMetadata,
'parent' => null,
'relation' => null,
'map' => null,
'scalar' => null,
);
} catch (Doctrine_Exception $e) {
$this->_parser->semanticalError($e->getMessage());
}
// Inspect for possible non-aliasing
if ($componentAlias === null) {
$componentAlias = $componentName;
}
$tableAlias = $parserResult->generateTableAlias($classMetadata->getClassName());
$parserResult->setQueryComponent($componentAlias, $queryComponent);
$parserResult->setTableAlias($tableAlias, $componentAlias);
}
// Return AST node
return $this->_AST;
}
}