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doctrine2/lib/Doctrine/Query/Production/RangeVariableDeclaration.php

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2008-05-24 22:18:37 +04:00
<?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 = identifier {"." identifier} [["AS"] IdentificationVariable]
*
* @package Doctrine
* @subpackage Query
* @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_Query_Production_RangeVariableDeclaration extends Doctrine_Query_Production
{
protected $_identifiers = array();
protected $_identificationVariable;
public function syntax($paramHolder)
{
// RangeVariableDeclaration = identifier {"." identifier} [["AS"] IdentificationVariable]
$this->_parser->match(Doctrine_Query_Token::T_IDENTIFIER);
$this->_identifiers[] = $this->_parser->token['value'];
while ($this->_isNextToken('.')) {
$this->_parser->match('.');
$this->_parser->match(Doctrine_Query_Token::T_IDENTIFIER);
$this->_identifiers[] = $this->_parser->token['value'];
}
if ($this->_isNextToken(Doctrine_Query_Token::T_AS)) {
$this->_parser->match(Doctrine_Query_Token::T_AS);
}
if ($this->_isNextToken(Doctrine_Query_Token::T_IDENTIFIER)) {
$paramHolder->set('componentName', implode('.', $this->_identifiers));
// Will return an identifier, with the semantical check already applied
$this->_identificationVariable = $this->AST('IdentificationVariable', $paramHolder);
$paramHolder->remove('componentName');
}
}
public function semantical($paramHolder)
{
$parserResult = $this->_parser->getParserResult();
$componentName = implode('.', $this->_identifiers);
if ($parserResult->hasQueryComponent($componentName)) {
//echo "Entered in if of hasQueryComponent(".$componentName."): true\n";
// As long as name != alias, try to bring the queryComponent from name (already processed)
$queryComponent = $parserResult->getQueryComponent($componentName);
// Check if we defined _identificationVariable. We throw semantical error if not
if ($this->_identificationVariable === null) {
$componentName = $queryComponent['metadata']->getClassName();
$this->_parser->semanticalError(
"Cannot re-declare component '{$componentName}'. Please assign an alias to it."
);
return;
}
} else {
//echo "Entered in if hasQueryComponent(".$componentName."), alias ".var_export($this->_identificationVariable, true).": false\n";
// No queryComponent was found. We will have to build it for the first time
if (count($this->_identifiers) > 1) {
// We are in a multiple identifier declaration; we are dealing with relations here
$this->_semanticalWithMultipleIdentifier();
} else {
// We are in a single identifier declaration; our identifier is the class name
$this->_semanticalWithSingleIdentifier();
}
}
return $this->_identificationVariable;
}
public function buildSql()
{
return '';
}
private function _semanticalWithSingleIdentifier()
{
$parserResult = $this->_parser->getParserResult();
// Get the connection for the component
$conn = $this->_parser->getSqlBuilder()->getConnection();
$manager = Doctrine_EntityManager::getManager();
$componentName = $this->_identifiers[0];
// Retrieving ClassMetadata and Mapper
try {
$classMetadata = $manager->getClassMetadata($componentName);
// Building queryComponent
$queryComponent = array(
'metadata' => $classMetadata,
'parent' => null,
'relation' => null,
'map' => null,
'agg' => null,
);
} catch (Doctrine_Exception $e) {
//echo "Tried to load class metadata from '".$componentName."': " . $e->getMessage() . "\n";
$this->_parser->semanticalError($e->getMessage());
return;
}
if ($this->_identificationVariable === null) {
$this->_identificationVariable = $componentName;
}
//echo "Identification Variable: " .$this->_identificationVariable . "\n";
$tableAlias = $parserResult->generateTableAlias($componentName);
$parserResult->setQueryComponent($this->_identificationVariable, $queryComponent);
$parserResult->setTableAlias($tableAlias, $this->_identificationVariable);
}
private function _semanticalWithMultipleIdentifier()
{
$parserResult = $this->_parser->getParserResult();
// Get the connection for the component
$conn = $this->_parser->getSqlBuilder()->getConnection();
$manager = Doctrine_EntityManager::getManager();
// Retrieve the base component
try {
$queryComponent = $parserResult->getQueryComponent($this->_identifiers[0]);
$classMetadata = $queryComponent['metadata'];
$className = $classMetadata->getClassName();
$parent = $path = $this->_identifiers[0];
} catch (Doctrine_Exception $e) {
$this->_parser->semanticalError($e->getMessage());
return;
}
// We loop into others identifier to build query components
for ($i = 1, $l = count($this->_identifiers); $i < $l; $i++) {
$relationName = $this->_identifiers[$i];
$path = '.' . $relationName;
if ($parserResult->hasQueryComponent($path)) {
// We already have the query component on hands, get it
$queryComponent = $parserResult->getQueryComponent($path);
$classMetadata = $queryComponent['metadata'];
// If we are in our last check and identification variable is null, we throw semantical error
if ($i == $l - 1 && $this->_identificationVariable === null) {
$componentName = $classMetadata->getClassName();
$this->_parser->semanticalError(
"Cannot re-declare component '{$componentName}' in path '{$path}'. " .
"Please assign an alias to it."
);
return;
}
} else {
// We don't have the query component yet
if ( ! $classMetadata->hasRelation($relationName)) {
$className = $classMetadata->getClassName();
$this->_parser->semanticalError("Relation '{$relationName}' does not exist in component '{$className}'");
return;
}
// Retrieving ClassMetadata and Mapper
try {
$relation = $classMetadata->getRelation($relationName);
$classMetadata = $relation->getClassMetadata();
$queryComponent = array(
'metadata' => $classMetadata,
'mapper' => $manager->getEntityPersister($relation->getForeignComponentName()),
'parent' => $parent,
'relation' => $relation,
'map' => null,
'agg' => null,
);
$parent = $path;
} catch (Doctrine_Exception $e) {
//echo "Tried to load class metadata from '".$relationName."'\n";
$this->_parser->semanticalError($e->getMessage());
return;
}
}
}
if ($this->_identificationVariable === null) {
$this->_identificationVariable = $path;
}
$tableAlias = $parserResult->generateTableAlias($path);
$parserResult->setQueryComponent($this->_identificationVariable, $queryComponent);
$parserResult->setTableAlias($tableAlias, $this->_identificationVariable);
}
}