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doctrine2/lib/Doctrine/ORM/Query/Parser.php

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<?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.doctrine-project.org>.
*/
namespace Doctrine\ORM\Query;
use Doctrine\Common\DoctrineException,
Doctrine\ORM\Query;
/**
* An LL(*) parser for the context-free grammar of the Doctrine Query Language.
* Parses a DQL query, reports any errors in it, and generates an AST.
*
* @license http://www.opensource.org/licenses/lgpl-license.php LGPL
* @link www.doctrine-project.org
* @since 2.0
* @version $Revision: 3938 $
* @author Guilherme Blanco <guilhermeblanco@hotmail.com>
* @author Jonathan Wage <jonwage@gmail.com>
* @author Roman Borschel <roman@code-factory.org>
* @author Janne Vanhala <jpvanhal@cc.hut.fi>
*/
class Parser
{
/** Maps registered string function names to class names. */
private static $_STRING_FUNCTIONS = array(
'concat' => 'Doctrine\ORM\Query\AST\Functions\ConcatFunction',
'substring' => 'Doctrine\ORM\Query\AST\Functions\SubstringFunction',
'trim' => 'Doctrine\ORM\Query\AST\Functions\TrimFunction',
'lower' => 'Doctrine\ORM\Query\AST\Functions\LowerFunction',
'upper' => 'Doctrine\ORM\Query\AST\Functions\UpperFunction'
);
/** Maps registered numeric function names to class names. */
private static $_NUMERIC_FUNCTIONS = array(
'length' => 'Doctrine\ORM\Query\AST\Functions\LengthFunction',
'locate' => 'Doctrine\ORM\Query\AST\Functions\LocateFunction',
'abs' => 'Doctrine\ORM\Query\AST\Functions\AbsFunction',
'sqrt' => 'Doctrine\ORM\Query\AST\Functions\SqrtFunction',
'mod' => 'Doctrine\ORM\Query\AST\Functions\ModFunction',
'size' => 'Doctrine\ORM\Query\AST\Functions\SizeFunction'
);
/** Maps registered datetime function names to class names. */
private static $_DATETIME_FUNCTIONS = array(
'current_date' => 'Doctrine\ORM\Query\AST\Functions\CurrentDateFunction',
'current_time' => 'Doctrine\ORM\Query\AST\Functions\CurrentTimeFunction',
'current_timestamp' => 'Doctrine\ORM\Query\AST\Functions\CurrentTimestampFunction'
);
/**
* Expressions that were encountered during parsing of identifiers and expressions
* and still need to be validated.
*
* @var array
*/
private $_deferredExpressionsStack = array();
/**
* The lexer.
*
* @var Doctrine\ORM\Query\Lexer
*/
private $_lexer;
/**
* The parser result.
*
* @var Doctrine\ORM\Query\ParserResult
*/
private $_parserResult;
/**
* The EntityManager.
*
* @var EnityManager
*/
private $_em;
/**
* The Abtract Syntax Tree of processed DQL query.
*
* @var SelectStatement | UpdateStatement | DeleteStatement
*/
private $_ast;
/**
* The Query to parse.
*
* @var Query
*/
private $_query;
/**
* Map of declared query components in the parsed query.
*
* @var array
*/
private $_queryComponents = array();
/**
* Keeps the nesting level of defined ResultVariables
*
* @var integer
*/
private $_nestingLevel = 0;
/**
* Any additional custom tree walkers that modify the AST.
*
* @var array
*/
private $_customTreeWalkers = array();
/**
* The custom last tree walker, if any, that is responsible for producing the output.
*
* @var TreeWalker
*/
private $_customOutputWalker;
/**
* Creates a new query parser object.
*
* @param Query $query The Query to parse.
*/
public function __construct(Query $query)
{
$this->_query = $query;
$this->_em = $query->getEntityManager();
$this->_lexer = new Lexer($query->getDql());
$this->_parserResult = new ParserResult();
$this->_ast = null;
}
/**
* Sets a custom tree walker that produces output.
* This tree walker will be run last over the AST, after any other walkers.
*
* @param string $className
*/
public function setCustomOutputTreeWalker($className)
{
$this->_customOutputWalker = $className;
}
/**
* Adds a custom tree walker for modifying the AST.
*
* @param string $className
*/
public function addCustomTreeWalker($className)
{
$this->_customTreeWalkers[] = $className;
}
/**
* Gets the lexer used by the parser.
*
* @return Doctrine\ORM\Query\Lexer
*/
public function getLexer()
{
return $this->_lexer;
}
/**
* Gets the ParserResult that is being filled with information during parsing.
*
* @return Doctrine\ORM\Query\ParserResult
*/
public function getParserResult()
{
return $this->_parserResult;
}
/**
* Gets the EntityManager used by the parser.
*
* @return EntityManager
*/
public function getEntityManager()
{
return $this->_em;
}
/**
* Gets the Abstract Syntax Tree generated by the parser.
*
* @return SelectStatement | UpdateStatement | DeleteStatement
*/
public function getAST()
{
return $this->_ast;
}
/**
* Registers a custom function that returns strings.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
*/
public static function registerStringFunction($name, $class)
{
self::$_STRING_FUNCTIONS[$name] = $class;
}
/**
* Registers a custom function that returns numerics.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
*/
public static function registerNumericFunction($name, $class)
{
self::$_NUMERIC_FUNCTIONS[$name] = $class;
}
/**
* Registers a custom function that returns date/time values.
*
* @param string $name The function name.
* @param string $class The class name of the function implementation.
*/
public static function registerDatetimeFunction($name, $class)
{
self::$_DATETIME_FUNCTIONS[$name] = $class;
}
/**
* Attempts to match the given token with the current lookahead token.
*
* If they match, updates the lookahead token; otherwise raises a syntax
* error.
*
* @param int|string token type or value
* @return bool True, if tokens match; false otherwise.
*/
public function match($token)
{
if ( ! ($this->_lexer->lookahead['type'] === $token)) {
$this->syntaxError($this->_lexer->getLiteral($token));
}
$this->_lexer->moveNext();
}
/**
* Free this parser enabling it to be reused
*
* @param boolean $deep Whether to clean peek and reset errors
* @param integer $position Position to reset
*/
public function free($deep = false, $position = 0)
{
// WARNING! Use this method with care. It resets the scanner!
$this->_lexer->resetPosition($position);
// Deep = true cleans peek and also any previously defined errors
if ($deep) {
$this->_lexer->resetPeek();
}
$this->_lexer->token = null;
$this->_lexer->lookahead = null;
}
/**
* Parses a query string.
*
* @return ParserResult
*/
public function parse()
{
// Parse & build AST
$AST = $this->QueryLanguage();
// Activate semantical checks after this point. Process all deferred checks in pipeline
$this->_processDeferredExpressionsStack($AST);
if ($customWalkers = $this->_query->getHint(Query::HINT_CUSTOM_TREE_WALKERS)) {
$this->_customTreeWalkers = $customWalkers;
}
// Run any custom tree walkers over the AST
if ($this->_customTreeWalkers) {
$treeWalkerChain = new TreeWalkerChain($this->_query, $this->_parserResult, $this->_queryComponents);
foreach ($this->_customTreeWalkers as $walker) {
$treeWalkerChain->addTreeWalker($walker);
}
if ($AST instanceof AST\SelectStatement) {
$treeWalkerChain->walkSelectStatement($AST);
} else if ($AST instanceof AST\UpdateStatement) {
$treeWalkerChain->walkUpdateStatement($AST);
} else {
$treeWalkerChain->walkDeleteStatement($AST);
}
}
if ($this->_customOutputWalker) {
$outputWalker = new $this->_customOutputWalker(
$this->_query, $this->_parserResult, $this->_queryComponents
);
} else {
$outputWalker = new SqlWalker(
$this->_query, $this->_parserResult, $this->_queryComponents
);
}
// Assign an SQL executor to the parser result
$this->_parserResult->setSqlExecutor($outputWalker->getExecutor($AST));
return $this->_parserResult;
}
/**
* Generates a new syntax error.
*
* @param string $expected Optional expected string.
* @param array $token Optional token.
*
* @throws \Doctrine\ORM\Query\QueryException
*/
public function syntaxError($expected = '', $token = null)
{
if ($token === null) {
$token = $this->_lexer->lookahead;
}
$tokenPos = (isset($token['position'])) ? $token['position'] : '-1';
$message = "line 0, col {$tokenPos}: Error: ";
if ($expected !== '') {
$message .= "Expected {$expected}, got ";
} else {
$message .= 'Unexpected ';
}
if ($this->_lexer->lookahead === null) {
$message .= 'end of string.';
} else {
$message .= "'{$token['value']}'";
}
throw \Doctrine\ORM\Query\QueryException::syntaxError($message);
}
/**
* Generates a new semantical error.
*
* @param string $message Optional message.
* @param array $token Optional token.
*
* @throws \Doctrine\ORM\Query\QueryException
*/
public function semanticalError($message = '', $token = null)
{
if ($token === null) {
$token = $this->_lexer->lookahead;
}
// Minimum exposed chars ahead of token
$distance = 12;
// Find a position of a final word to display in error string
$dql = $this->_query->getDql();
$length = strlen($dql);
$pos = $token['position'] + $distance;
$pos = strpos($dql, ' ', ($length > $pos) ? $pos : $length);
$length = ($pos !== false) ? $pos - $token['position'] : $distance;
// Building informative message
$message = 'line 0, col ' . (
(isset($token['position']) && $token['position'] > 0) ? $token['position'] : '-1'
) . " near '" . substr($dql, $token['position'], $length) . "': Error: " . $message;
throw \Doctrine\ORM\Query\QueryException::semanticalError($message);
}
/**
* Peeks beyond the specified token and returns the first token after that one.
*
* @param array $token
* @return array
*/
private function _peekBeyond($token)
{
$peek = $this->_lexer->peek();
while ($peek['value'] != $token) {
$peek = $this->_lexer->peek();
}
$peek = $this->_lexer->peek();
$this->_lexer->resetPeek();
return $peek;
}
/**
* Checks if the next-next (after lookahead) token starts a function.
*
* @return boolean TRUE if the next-next tokens start a function, FALSE otherwise.
*/
private function _isFunction()
{
$peek = $this->_lexer->peek();
$nextpeek = $this->_lexer->peek();
$this->_lexer->resetPeek();
// We deny the COUNT(SELECT * FROM User u) here. COUNT won't be considered a function
return ($peek['value'] === '(' && $nextpeek['type'] !== Lexer::T_SELECT);
}
/**
* Checks whether the function with the given name is a string function
* (a function that returns strings).
*
* @return boolean TRUE if the token type is a string function, FALSE otherwise.
*/
private function _isStringFunction($funcName)
{
return isset(self::$_STRING_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the function with the given name is a numeric function
* (a function that returns numerics).
*
* @return boolean TRUE if the token type is a numeric function, FALSE otherwise.
*/
private function _isNumericFunction($funcName)
{
return isset(self::$_NUMERIC_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the function with the given name is a datetime function
* (a function that returns date/time values).
*
* @return boolean TRUE if the token type is a datetime function, FALSE otherwise.
*/
private function _isDatetimeFunction($funcName)
{
return isset(self::$_DATETIME_FUNCTIONS[strtolower($funcName)]);
}
/**
* Checks whether the given token type indicates an aggregate function.
*
* @return boolean TRUE if the token type is an aggregate function, FALSE otherwise.
*/
private function _isAggregateFunction($tokenType)
{
return $tokenType == Lexer::T_AVG || $tokenType == Lexer::T_MIN ||
$tokenType == Lexer::T_MAX || $tokenType == Lexer::T_SUM ||
$tokenType == Lexer::T_COUNT;
}
/**
* Checks whether the current lookahead token of the lexer has the type
* T_ALL, T_ANY or T_SOME.
*
* @return boolean
*/
private function _isNextAllAnySome()
{
return $this->_lexer->lookahead['type'] === Lexer::T_ALL ||
$this->_lexer->lookahead['type'] === Lexer::T_ANY ||
$this->_lexer->lookahead['type'] === Lexer::T_SOME;
}
/**
* Checks whether the next 2 tokens start a subselect.
*
* @return boolean TRUE if the next 2 tokens start a subselect, FALSE otherwise.
*/
private function _isSubselect()
{
$la = $this->_lexer->lookahead;
$next = $this->_lexer->glimpse();
return ($la['value'] === '(' && $next['type'] === Lexer::T_SELECT);
}
/**
* Subscribe expression to be validated.
*
* @param mixed $expression
* @param string $method
* @param array $token
* @param integer $nestingLevel
*/
private function _subscribeExpression($expression, $method, $token, $nestingLevel = null)
{
$nestingLevel = ($nestingLevel !== null) ?: $this->_nestingLevel;
$exprStack = array(
'method' => $method,
'expression' => $expression,
'nestingLevel' => $nestingLevel,
'token' => $token,
);
array_push($this->_deferredExpressionsStack, $exprStack);
}
/**
* Processes the topmost stack of deferred path expressions.
*
* @param mixed $AST
*/
private function _processDeferredExpressionsStack($AST)
{
foreach ($this->_deferredExpressionsStack as $item) {
if (!isset($item['method'])) var_dump($item);
$method = '_validate' . $item['method'];
$this->$method($item, $AST);
}
}
/**
* Validates that the given <tt>IdentificationVariable</tt> is a semantically correct.
* It must exist in query components list.
*
* @param array $deferredItem
* @param mixed $AST
*
* @return array Query Component
*/
private function _validateIdentificationVariable($deferredItem, $AST)
{
$identVariable = $deferredItem['expression'];
// Check if IdentificationVariable exists in queryComponents
if ( ! isset($this->_queryComponents[$identVariable])) {
$this->semanticalError(
"'$identVariable' is not defined.", $deferredItem['token']
);
}
$qComp = $this->_queryComponents[$identVariable];
// Check if queryComponent points to an AbstractSchemaName or a ResultVariable
if ( ! isset($qComp['metadata'])) {
$this->semanticalError(
"'$identVariable' does not point to a Class.", $deferredItem['token']
);
}
// Validate if identification variable nesting level is lower or equal than the current one
if ($qComp['nestingLevel'] > $deferredItem['nestingLevel']) {
$this->semanticalError(
"'$identVariable' is used outside the scope of its declaration.", $deferredItem['token']
);
}
return $qComp;
}
/**
* Validates that the given <tt>ResultVariable</tt> is a semantically correct.
* It must exist in query components list.
*
* @param array $deferredItem
* @param mixed $AST
*
* @return array Query Component
*/
private function _validateResultVariable($deferredItem, $AST)
{
$resultVariable = $deferredItem['expression'];
// Check if ResultVariable exists in queryComponents
if ( ! isset($this->_queryComponents[$resultVariable])) {
$this->semanticalError(
"'$resultVariable' is not defined.", $deferredItem['token']
);
}
$qComp = $this->_queryComponents[$resultVariable];
// Check if queryComponent points to an AbstractSchemaName or a ResultVariable
if ( ! isset($qComp['resultVariable'])) {
$this->semanticalError(
"'$identVariable' does not point to a ResultVariable.", $deferredItem['token']
);
}
// Validate if identification variable nesting level is lower or equal than the current one
if ($qComp['nestingLevel'] > $deferredItem['nestingLevel']) {
$this->semanticalError(
"'$resultVariable' is used outside the scope of its declaration.", $deferredItem['token']
);
}
return $qComp;
}
/**
* Validates that the given <tt>JoinAssociationPathExpression</tt> is a semantically correct.
*
* @param array $deferredItem
* @param mixed $AST
*
* @return array Query Component
*/
private function _validateJoinAssociationPathExpression($deferredItem, $AST)
{
$pathExpression = $deferredItem['expression'];
$qComp = $this->_queryComponents[$pathExpression->identificationVariable];;
// Validating association field (*-to-one or *-to-many)
$field = $pathExpression->associationField;
$class = $qComp['metadata'];
if ( ! isset($class->associationMappings[$field])) {
$this->semanticalError('Class ' . $class->name . ' has no association named ' . $field);
}
return $qComp;
}
/**
* Validates that the given <tt>PathExpression</tt> is a semantically correct for grammar rules:
*
* AssociationPathExpression ::= CollectionValuedPathExpression | SingleValuedAssociationPathExpression
* SingleValuedPathExpression ::= StateFieldPathExpression | SingleValuedAssociationPathExpression
* StateFieldPathExpression ::= IdentificationVariable "." StateField | SingleValuedAssociationPathExpression "." StateField
* SingleValuedAssociationPathExpression ::= IdentificationVariable "." {SingleValuedAssociationField "."}* SingleValuedAssociationField
* CollectionValuedPathExpression ::= IdentificationVariable "." {SingleValuedAssociationField "."}* CollectionValuedAssociationField
*
* @param array $deferredItem
* @param mixed $AST
*
* @return integer
*/
private function _validatePathExpression($deferredItem, $AST)
{
$pathExpression = $deferredItem['expression'];
$parts = $pathExpression->parts;
$numParts = count($parts);
$qComp = $this->_queryComponents[$pathExpression->identificationVariable];
$aliasIdentificationVariable = $pathExpression->identificationVariable;
$parentField = $pathExpression->identificationVariable;
$class = $qComp['metadata'];
$fieldType = null;
$curIndex = 0;
foreach ($parts as $field) {
// Check if it is not in a state field
if ($fieldType & AST\PathExpression::TYPE_STATE_FIELD) {
$this->semanticalError(
'Cannot navigate through state field named ' . $field . ' on ' . $parentField,
$deferredItem['token']
);
}
// Check if it is not a collection field
if ($fieldType & AST\PathExpression::TYPE_COLLECTION_VALUED_ASSOCIATION) {
$this->semanticalError(
'Cannot navigate through collection field named ' . $field . ' on ' . $parentField,
$deferredItem['token']
);
}
// Check if field or association exists
if ( ! isset($class->associationMappings[$field]) && ! isset($class->fieldMappings[$field])) {
$this->semanticalError(
'Class ' . $class->name . ' has no field or association named ' . $field,
$deferredItem['token']
);
}
$parentField = $field;
if (isset($class->fieldMappings[$field])) {
$fieldType = AST\PathExpression::TYPE_STATE_FIELD;
} else {
$assoc = $class->associationMappings[$field];
$class = $this->_em->getClassMetadata($assoc->targetEntityName);
if (
($curIndex != $numParts - 1) &&
! isset($this->_queryComponents[$aliasIdentificationVariable . '.' . $field])
) {
// Building queryComponent
$joinQueryComponent = array(
'metadata' => $class,
'parent' => $aliasIdentificationVariable,
'relation' => $assoc,
'map' => null,
'nestingLevel' => $this->_nestingLevel,
'token' => $deferredItem['token'],
);
// Create AST node
$joinVariableDeclaration = new AST\JoinVariableDeclaration(
new AST\Join(
AST\Join::JOIN_TYPE_INNER,
new AST\JoinAssociationPathExpression($aliasIdentificationVariable, $field),
$aliasIdentificationVariable . '.' . $field
),
null
);
$AST->fromClause->identificationVariableDeclarations[0]->joinVariableDeclarations[] = $joinVariableDeclaration;
$this->_queryComponents[$aliasIdentificationVariable . '.' . $field] = $joinQueryComponent;
}
$aliasIdentificationVariable .= '.' . $field;
if ($assoc->isOneToOne()) {
$fieldType = AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION;
} else {
$fieldType = AST\PathExpression::TYPE_COLLECTION_VALUED_ASSOCIATION;
}
}
$curIndex++;
}
// Validate if PathExpression is one of the expected types
$expectedType = $pathExpression->expectedType;
if ( ! ($expectedType & $fieldType)) {
// We need to recognize which was expected type(s)
$expectedStringTypes = array();
// Validate state field type
if ($expectedType & AST\PathExpression::TYPE_STATE_FIELD) {
$expectedStringTypes[] = 'StateFieldPathExpression';
}
// Validate single valued association (*-to-one)
if ($expectedType & AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION) {
$expectedStringTypes[] = 'SingleValuedAssociationField';
}
// Validate single valued association (*-to-many)
if ($expectedType & AST\PathExpression::TYPE_COLLECTION_VALUED_ASSOCIATION) {
$expectedStringTypes[] = 'CollectionValuedAssociationField';
}
// Build the error message
$semanticalError = 'Invalid PathExpression. ';
if (count($expectedStringTypes) == 1) {
$semanticalError .= 'Must be a ' . $expectedStringTypes[0] . '.';
} else {
$semanticalError .= implode(' or ', $expectedStringTypes) . ' expected.';
}
$this->semanticalError($semanticalError, $deferredItem['token']);
}
// We need to force the type in PathExpression
$pathExpression->type = $fieldType;
return $fieldType;
}
/**
* QueryLanguage ::= SelectStatement | UpdateStatement | DeleteStatement
*
* @return \Doctrine\ORM\Query\AST\SelectStatement |
* \Doctrine\ORM\Query\AST\UpdateStatement |
* \Doctrine\ORM\Query\AST\DeleteStatement
*/
public function QueryLanguage()
{
$this->_lexer->moveNext();
switch ($this->_lexer->lookahead['type']) {
case Lexer::T_SELECT:
return $this->SelectStatement();
case Lexer::T_UPDATE:
return $this->UpdateStatement();
case Lexer::T_DELETE:
return $this->DeleteStatement();
default:
$this->syntaxError('SELECT, UPDATE or DELETE');
break;
}
// Check for end of string
if ($this->_lexer->lookahead !== null) {
$this->syntaxError('end of string');
}
}
/**
* SelectStatement ::= SelectClause FromClause [WhereClause] [GroupByClause] [HavingClause] [OrderByClause]
*
* @return \Doctrine\ORM\Query\AST\SelectStatement
*/
public function SelectStatement()
{
$selectStatement = new AST\SelectStatement($this->SelectClause(), $this->FromClause());
$selectStatement->whereClause = $this->_lexer->isNextToken(Lexer::T_WHERE)
? $this->WhereClause() : null;
$selectStatement->groupByClause = $this->_lexer->isNextToken(Lexer::T_GROUP)
? $this->GroupByClause() : null;
$selectStatement->havingClause = $this->_lexer->isNextToken(Lexer::T_HAVING)
? $this->HavingClause() : null;
$selectStatement->orderByClause = $this->_lexer->isNextToken(Lexer::T_ORDER)
? $this->OrderByClause() : null;
return $selectStatement;
}
/**
* UpdateStatement ::= UpdateClause [WhereClause]
*
* @return \Doctrine\ORM\Query\AST\UpdateStatement
*/
public function UpdateStatement()
{
$updateStatement = new AST\UpdateStatement($this->UpdateClause());
$updateStatement->whereClause = $this->_lexer->isNextToken(Lexer::T_WHERE)
? $this->WhereClause() : null;
return $updateStatement;
}
/**
* DeleteStatement ::= DeleteClause [WhereClause]
*
* @return \Doctrine\ORM\Query\AST\DeleteStatement
*/
public function DeleteStatement()
{
$deleteStatement = new AST\DeleteStatement($this->DeleteClause());
$deleteStatement->whereClause = $this->_lexer->isNextToken(Lexer::T_WHERE)
? $this->WhereClause() : null;
return $deleteStatement;
}
/**
* IdentificationVariable ::= identifier
*
* @return string
*/
public function IdentificationVariable()
{
$this->match(Lexer::T_IDENTIFIER);
$identVariable = $this->_lexer->token['value'];
// Defer IdentificationVariable validation
$exprStack = array(
'method' => 'IdentificationVariable',
'expression' => $identVariable,
'nestingLevel' => $this->_nestingLevel,
'token' => $this->_lexer->token,
);
array_push($this->_deferredExpressionsStack, $exprStack);
return $identVariable;
}
/**
* AliasIdentificationVariable = identifier
*
* @return string
*/
public function AliasIdentificationVariable()
{
$this->match(Lexer::T_IDENTIFIER);
$aliasIdentVariable = $this->_lexer->token['value'];
$exists = isset($this->_queryComponents[$aliasIdentVariable]);
if ($exists) {
$this->semanticalError(
"'$aliasIdentVariable' is already defined.", $this->_lexer->token
);
}
return $aliasIdentVariable;
}
/**
* AbstractSchemaName ::= identifier
*
* @return string
*/
public function AbstractSchemaName()
{
$this->match(Lexer::T_IDENTIFIER);
$schemaName = $this->_lexer->token['value'];
$exists = class_exists($schemaName, true);
if ( ! $exists) {
$this->semanticalError("Class '$schemaName' is not defined.", $this->_lexer->token);
}
return $schemaName;
}
/**
* AliasResultVariable ::= identifier
*
* @return string
*/
public function AliasResultVariable()
{
$this->match(Lexer::T_IDENTIFIER);
$resultVariable = $this->_lexer->token['value'];
$exists = isset($this->_queryComponents[$resultVariable]);
if ($exists) {
$this->semanticalError(
"'$resultVariable' is already defined.", $this->_lexer->token
);
}
return $resultVariable;
}
/**
* ResultVariable ::= identifier
*
* @return string
*/
public function ResultVariable()
{
$this->match(Lexer::T_IDENTIFIER);
$resultVariable = $this->_lexer->token['value'];
// Defer ResultVariable validation
$this->_subscribeExpression(
$resultVariable, 'ResultVariable',
$this->_lexer->token, $this->_nestingLevel
);
return $resultVariable;
}
/**
* JoinAssociationPathExpression ::= IdentificationVariable "." (CollectionValuedAssociationField | SingleValuedAssociationField)
*
* @return \Doctrine\ORM\Query\AST\JoinAssociationPathExpression
*/
public function JoinAssociationPathExpression()
{
$token = $this->_lexer->lookahead;
$identVariable = $this->IdentificationVariable();
$this->match(Lexer::T_DOT);
$this->match(Lexer::T_IDENTIFIER);
$field = $this->_lexer->token['value'];
$pathExpr = new AST\JoinAssociationPathExpression($identVariable, $field);
// Defer JoinAssociationPathExpression validation
$this->_subscribeExpression(
$pathExpr, 'JoinAssociationPathExpression',
$token, $this->_nestingLevel
);
return $pathExpr;
}
/**
* Parses an arbitrary path expression and defers semantical validation
* based on expected types.
*
* PathExpression ::= IdentificationVariable {"." identifier}* "." identifier
*
* @param integer $expectedTypes
* @return \Doctrine\ORM\Query\AST\PathExpression
*/
public function PathExpression($expectedTypes)
{
$token = $this->_lexer->lookahead;
$identVariable = $this->IdentificationVariable();
$parts = array();
do {
$this->match(Lexer::T_DOT);
$this->match(Lexer::T_IDENTIFIER);
$parts[] = $this->_lexer->token['value'];
} while ($this->_lexer->isNextToken(Lexer::T_DOT));
// Creating AST node
$pathExpr = new AST\PathExpression($expectedTypes, $identVariable, $parts);
// Defer PathExpression validation if requested to be defered
$this->_subscribeExpression(
$pathExpr, 'PathExpression',
$token, $this->_nestingLevel
);
return $pathExpr;
}
/**
* AssociationPathExpression ::= CollectionValuedPathExpression | SingleValuedAssociationPathExpression
*
* @return \Doctrine\ORM\Query\AST\PathExpression
*/
public function AssociationPathExpression()
{
return $this->PathExpression(
AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION |
AST\PathExpression::TYPE_COLLECTION_VALUED_ASSOCIATION
);
}
/**
* SingleValuedPathExpression ::= StateFieldPathExpression | SingleValuedAssociationPathExpression
*
* @return \Doctrine\ORM\Query\AST\PathExpression
*/
public function SingleValuedPathExpression()
{
return $this->PathExpression(
AST\PathExpression::TYPE_STATE_FIELD |
AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION
);
}
/**
* StateFieldPathExpression ::= SimpleStateFieldPathExpression | SimpleStateFieldAssociationPathExpression
*
* @return \Doctrine\ORM\Query\AST\PathExpression
*/
public function StateFieldPathExpression()
{
return $this->PathExpression(AST\PathExpression::TYPE_STATE_FIELD);
}
/**
* SingleValuedAssociationPathExpression ::= IdentificationVariable "." {SingleValuedAssociationField "."}* SingleValuedAssociationField
*
* @return \Doctrine\ORM\Query\AST\PathExpression
*/
public function SingleValuedAssociationPathExpression()
{
return $this->PathExpression(AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION);
}
/**
* CollectionValuedPathExpression ::= IdentificationVariable "." {SingleValuedAssociationField "."}* CollectionValuedAssociationField
*
* @return \Doctrine\ORM\Query\AST\PathExpression
*/
public function CollectionValuedPathExpression()
{
return $this->PathExpression(AST\PathExpression::TYPE_COLLECTION_VALUED_ASSOCIATION);
}
/**
* SimpleStateFieldPathExpression ::= IdentificationVariable "." StateField
*
* @return \Doctrine\ORM\Query\AST\PathExpression
*/
public function SimpleStateFieldPathExpression()
{
$pathExpression = $this->PathExpression(AST\PathExpression::TYPE_STATE_FIELD);
$parts = $pathExpression->parts;
if (count($parts) > 1) {
$this->semanticalError(
"Invalid SimpleStateFieldPathExpression. " .
"Expected state field, got association '{$parts[0]}'."
);
}
return $pathExpression;
}
/**
* SelectClause ::= "SELECT" ["DISTINCT"] SelectExpression {"," SelectExpression}
*
* @return \Doctrine\ORM\Query\AST\SelectClause
*/
public function SelectClause()
{
$isDistinct = false;
$this->match(Lexer::T_SELECT);
// Check for DISTINCT
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$isDistinct = true;
}
// Process SelectExpressions (1..N)
$selectExpressions = array();
$selectExpressions[] = $this->SelectExpression();
while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
$this->match(Lexer::T_COMMA);
$selectExpressions[] = $this->SelectExpression();
}
return new AST\SelectClause($selectExpressions, $isDistinct);
}
/**
* SimpleSelectClause ::= "SELECT" ["DISTINCT"] SimpleSelectExpression
*
* @return \Doctrine\ORM\Query\AST\SimpleSelectClause
*/
public function SimpleSelectClause()
{
$isDistinct = false;
$this->match(Lexer::T_SELECT);
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$isDistinct = true;
}
return new AST\SimpleSelectClause($this->SimpleSelectExpression(), $isDistinct);
}
/**
* UpdateClause ::= "UPDATE" AbstractSchemaName ["AS"] AliasIdentificationVariable "SET" UpdateItem {"," UpdateItem}*
*
* @return \Doctrine\ORM\Query\AST\UpdateClause
*/
public function UpdateClause()
{
$this->match(Lexer::T_UPDATE);
$token = $this->_lexer->lookahead;
$abstractSchemaName = $this->AbstractSchemaName();
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
$aliasIdentificationVariable = $this->AliasIdentificationVariable();
$class = $this->_em->getClassMetadata($abstractSchemaName);
// Building queryComponent
$queryComponent = array(
'metadata' => $class,
'parent' => null,
'relation' => null,
'map' => null,
'nestingLevel' => $this->_nestingLevel,
'token' => $token,
);
$this->_queryComponents[$aliasIdentificationVariable] = $queryComponent;
$this->match(Lexer::T_SET);
$updateItems = array();
$updateItems[] = $this->UpdateItem();
while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
$this->match(Lexer::T_COMMA);
$updateItems[] = $this->UpdateItem();
}
$updateClause = new AST\UpdateClause($abstractSchemaName, $updateItems);
$updateClause->aliasIdentificationVariable = $aliasIdentificationVariable;
return $updateClause;
}
/**
* DeleteClause ::= "DELETE" ["FROM"] AbstractSchemaName ["AS"] AliasIdentificationVariable
*
* @return \Doctrine\ORM\Query\AST\DeleteClause
*/
public function DeleteClause()
{
$this->match(Lexer::T_DELETE);
if ($this->_lexer->isNextToken(Lexer::T_FROM)) {
$this->match(Lexer::T_FROM);
}
$token = $this->_lexer->lookahead;
$deleteClause = new AST\DeleteClause($this->AbstractSchemaName());
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
$aliasIdentificationVariable = $this->AliasIdentificationVariable();
$deleteClause->aliasIdentificationVariable = $aliasIdentificationVariable;
$class = $this->_em->getClassMetadata($deleteClause->abstractSchemaName);
// Building queryComponent
$queryComponent = array(
'metadata' => $class,
'parent' => null,
'relation' => null,
'map' => null,
'nestingLevel' => $this->_nestingLevel,
'token' => $token,
);
$this->_queryComponents[$aliasIdentificationVariable] = $queryComponent;
return $deleteClause;
}
/**
* FromClause ::= "FROM" IdentificationVariableDeclaration {"," IdentificationVariableDeclaration}*
*
* @return \Doctrine\ORM\Query\AST\FromClause
*/
public function FromClause()
{
$this->match(Lexer::T_FROM);
$identificationVariableDeclarations = array();
$identificationVariableDeclarations[] = $this->IdentificationVariableDeclaration();
while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
$this->match(Lexer::T_COMMA);
$identificationVariableDeclarations[] = $this->IdentificationVariableDeclaration();
}
return new AST\FromClause($identificationVariableDeclarations);
}
/**
* SubselectFromClause ::= "FROM" SubselectIdentificationVariableDeclaration {"," SubselectIdentificationVariableDeclaration}*
*
* @return \Doctrine\ORM\Query\AST\SubselectFromClause
*/
public function SubselectFromClause()
{
$this->match(Lexer::T_FROM);
$identificationVariables = array();
$identificationVariables[] = $this->SubselectIdentificationVariableDeclaration();
while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
$this->match(Lexer::T_COMMA);
$identificationVariables[] = $this->SubselectIdentificationVariableDeclaration();
}
return new AST\SubselectFromClause($identificationVariables);
}
/**
* WhereClause ::= "WHERE" ConditionalExpression
*
* @return \Doctrine\ORM\Query\AST\WhereClause
*/
public function WhereClause()
{
$this->match(Lexer::T_WHERE);
return new AST\WhereClause($this->ConditionalExpression());
}
/**
* HavingClause ::= "HAVING" ConditionalExpression
*
* @return \Doctrine\ORM\Query\AST\HavingClause
*/
public function HavingClause()
{
$this->match(Lexer::T_HAVING);
return new AST\HavingClause($this->ConditionalExpression());
}
/**
* GroupByClause ::= "GROUP" "BY" GroupByItem {"," GroupByItem}*
*
* @return \Doctrine\ORM\Query\AST\GroupByClause
*/
public function GroupByClause()
{
$this->match(Lexer::T_GROUP);
$this->match(Lexer::T_BY);
$groupByItems = array($this->GroupByItem());
while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
$this->match(Lexer::T_COMMA);
$groupByItems[] = $this->GroupByItem();
}
return new AST\GroupByClause($groupByItems);
}
/**
* OrderByClause ::= "ORDER" "BY" OrderByItem {"," OrderByItem}*
*
* @return \Doctrine\ORM\Query\AST\OrderByClause
*/
public function OrderByClause()
{
$this->match(Lexer::T_ORDER);
$this->match(Lexer::T_BY);
$orderByItems = array();
$orderByItems[] = $this->OrderByItem();
while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
$this->match(Lexer::T_COMMA);
$orderByItems[] = $this->OrderByItem();
}
return new AST\OrderByClause($orderByItems);
}
/**
* Subselect ::= SimpleSelectClause SubselectFromClause [WhereClause] [GroupByClause] [HavingClause] [OrderByClause]
*
* @return \Doctrine\ORM\Query\AST\Subselect
*/
public function Subselect()
{
// Increase query nesting level
$this->_nestingLevel++;
$subselect = new AST\Subselect($this->SimpleSelectClause(), $this->SubselectFromClause());
$subselect->whereClause = $this->_lexer->isNextToken(Lexer::T_WHERE)
? $this->WhereClause() : null;
$subselect->groupByClause = $this->_lexer->isNextToken(Lexer::T_GROUP)
? $this->GroupByClause() : null;
$subselect->havingClause = $this->_lexer->isNextToken(Lexer::T_HAVING)
? $this->HavingClause() : null;
$subselect->orderByClause = $this->_lexer->isNextToken(Lexer::T_ORDER)
? $this->OrderByClause() : null;
// Decrease query nesting level
$this->_nestingLevel--;
return $subselect;
}
/**
* UpdateItem ::= IdentificationVariable "." {StateField | SingleValuedAssociationField} "=" NewValue
*
* @return \Doctrine\ORM\Query\AST\UpdateItem
*/
public function UpdateItem()
{
$token = $this->_lexer->lookahead;
$identVariable = $this->IdentificationVariable();
$this->match(Lexer::T_DOT);
$this->match(Lexer::T_IDENTIFIER);
$field = $this->_lexer->token['value'];
// Check if field exists
$class = $this->_queryComponents[$identVariable]['metadata'];
if ( ! isset($class->associationMappings[$field]) && ! isset($class->fieldMappings[$field])) {
$this->semanticalError(
'Class ' . $class->name . ' has no field named ' . $field, $token
);
}
$this->match(Lexer::T_EQUALS);
$newValue = $this->NewValue();
$updateItem = new AST\UpdateItem($field, $newValue);
$updateItem->identificationVariable = $identVariable;
return $updateItem;
}
/**
* GroupByItem ::= IdentificationVariable | SingleValuedPathExpression
*
* @return string | \Doctrine\ORM\Query\AST\PathExpression
*/
public function GroupByItem()
{
// We need to check if we are in a IdentificationVariable or SingleValuedPathExpression
$glimpse = $this->_lexer->glimpse();
if ($glimpse['value'] != '.') {
$token = $this->_lexer->lookahead;
$identVariable = $this->IdentificationVariable();
// Validate if IdentificationVariable is defined
$this->_validateIdentificationVariable($identVariable, null, $token);
return $identVariable;
}
return $this->SingleValuedPathExpression();
}
/**
* OrderByItem ::= (ResultVariable | StateFieldPathExpression) ["ASC" | "DESC"]
*
* @todo Post 2.0 release. Support general SingleValuedPathExpression instead
* of only StateFieldPathExpression.
*
* @return \Doctrine\ORM\Query\AST\OrderByItem
*/
public function OrderByItem()
{
$type = 'ASC';
// We need to check if we are in a ResultVariable or StateFieldPathExpression
$glimpse = $this->_lexer->glimpse();
if ($glimpse['value'] != '.') {
$token = $this->_lexer->lookahead;
$expr = $this->ResultVariable();
} else {
$expr = $this->StateFieldPathExpression();
}
$item = new AST\OrderByItem($expr);
if ($this->_lexer->isNextToken(Lexer::T_ASC)) {
$this->match(Lexer::T_ASC);
} else if ($this->_lexer->isNextToken(Lexer::T_DESC)) {
$this->match(Lexer::T_DESC);
$type = 'DESC';
}
$item->type = $type;
return $item;
}
/**
* NewValue ::= SimpleArithmeticExpression | StringPrimary | DatetimePrimary | BooleanPrimary |
* EnumPrimary | SimpleEntityExpression | "NULL"
*
* NOTE: Since it is not possible to correctly recognize individual types, here is the full
* grammar that needs to be supported:
*
* NewValue ::= SimpleArithmeticExpression | "NULL"
*
* SimpleArithmeticExpression covers all *Primary grammar rules and also SimplEntityExpression
*/
public function NewValue()
{
if ($this->_lexer->isNextToken(Lexer::T_NULL)) {
$this->match(Lexer::T_NULL);
return null;
} else if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
return new AST\InputParameter($this->_lexer->token['value']);
}
return $this->SimpleArithmeticExpression();
}
/**
* IdentificationVariableDeclaration ::= RangeVariableDeclaration [IndexBy] {JoinVariableDeclaration}*
*
* @return \Doctrine\ORM\Query\AST\IdentificationVariableDeclaration
*/
public function IdentificationVariableDeclaration()
{
$rangeVariableDeclaration = $this->RangeVariableDeclaration();
$indexBy = $this->_lexer->isNextToken(Lexer::T_INDEX) ? $this->IndexBy() : null;
$joinVariableDeclarations = array();
while (
$this->_lexer->isNextToken(Lexer::T_LEFT) ||
$this->_lexer->isNextToken(Lexer::T_INNER) ||
$this->_lexer->isNextToken(Lexer::T_JOIN)
) {
$joinVariableDeclarations[] = $this->JoinVariableDeclaration();
}
return new AST\IdentificationVariableDeclaration(
$rangeVariableDeclaration, $indexBy, $joinVariableDeclarations
);
}
/**
* SubselectIdentificationVariableDeclaration ::= IdentificationVariableDeclaration | (AssociationPathExpression ["AS"] AliasIdentificationVariable)
*
* @return \Doctrine\ORM\Query\AST\SubselectIdentificationVariableDeclaration |
* \Doctrine\ORM\Query\AST\IdentificationVariableDeclaration
*/
public function SubselectIdentificationVariableDeclaration()
{
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '.') {
$subselectIdVarDecl = new AST\SubselectIdentificationVariableDeclaration();
$subselectIdVarDecl->associationPathExpression = $this->AssociationPathExpression();
$this->match(Lexer::T_AS);
$subselectIdVarDecl->aliasIdentificationVariable = $this->AliasIdentificationVariable();
return $subselectIdVarDecl;
}
return $this->IdentificationVariableDeclaration();
}
/**
* JoinVariableDeclaration ::= Join [IndexBy]
*
* @return \Doctrine\ORM\Query\AST\JoinVariableDeclaration
*/
public function JoinVariableDeclaration()
{
$join = $this->Join();
$indexBy = $this->_lexer->isNextToken(Lexer::T_INDEX)
? $this->IndexBy() : null;
return new AST\JoinVariableDeclaration($join, $indexBy);
}
/**
* RangeVariableDeclaration ::= AbstractSchemaName ["AS"] AliasIdentificationVariable
*
* @return \Doctrine\ORM\Query\AST\RangeVariableDeclaration
*/
public function RangeVariableDeclaration()
{
$abstractSchemaName = $this->AbstractSchemaName();
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
$token = $this->_lexer->lookahead;
$aliasIdentificationVariable = $this->AliasIdentificationVariable();
$classMetadata = $this->_em->getClassMetadata($abstractSchemaName);
// Building queryComponent
$queryComponent = array(
'metadata' => $classMetadata,
'parent' => null,
'relation' => null,
'map' => null,
'nestingLevel' => $this->_nestingLevel,
'token' => $token,
);
$this->_queryComponents[$aliasIdentificationVariable] = $queryComponent;
return new AST\RangeVariableDeclaration($abstractSchemaName, $aliasIdentificationVariable);
}
/**
* Join ::= ["LEFT" ["OUTER"] | "INNER"] "JOIN" JoinAssociationPathExpression
* ["AS"] AliasIdentificationVariable [("ON" | "WITH") ConditionalExpression]
*
* @return \Doctrine\ORM\Query\AST\Join
*/
public function Join()
{
// Check Join type
$joinType = AST\Join::JOIN_TYPE_INNER;
if ($this->_lexer->isNextToken(Lexer::T_LEFT)) {
$this->match(Lexer::T_LEFT);
// Possible LEFT OUTER join
if ($this->_lexer->isNextToken(Lexer::T_OUTER)) {
$this->match(Lexer::T_OUTER);
$joinType = AST\Join::JOIN_TYPE_LEFTOUTER;
} else {
$joinType = AST\Join::JOIN_TYPE_LEFT;
}
} else if ($this->_lexer->isNextToken(Lexer::T_INNER)) {
$this->match(Lexer::T_INNER);
}
$this->match(Lexer::T_JOIN);
$joinPathExpression = $this->JoinAssociationPathExpression();
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
$token = $this->_lexer->lookahead;
$aliasIdentificationVariable = $this->AliasIdentificationVariable();
// Verify that the association exists.
$parentClass = $this->_queryComponents[$joinPathExpression->identificationVariable]['metadata'];
$assocField = $joinPathExpression->associationField;
if ( ! $parentClass->hasAssociation($assocField)) {
$this->semanticalError(
"Class " . $parentClass->name . " has no association named '$assocField'."
);
}
$targetClassName = $parentClass->getAssociationMapping($assocField)->targetEntityName;
// Building queryComponent
$joinQueryComponent = array(
'metadata' => $this->_em->getClassMetadata($targetClassName),
'parent' => $joinPathExpression->identificationVariable,
'relation' => $parentClass->getAssociationMapping($assocField),
'map' => null,
'nestingLevel' => $this->_nestingLevel,
'token' => $token,
);
$this->_queryComponents[$aliasIdentificationVariable] = $joinQueryComponent;
// Create AST node
$join = new AST\Join($joinType, $joinPathExpression, $aliasIdentificationVariable);
// Check for ad-hoc Join conditions
if ($this->_lexer->isNextToken(Lexer::T_ON) || $this->_lexer->isNextToken(Lexer::T_WITH)) {
if ($this->_lexer->isNextToken(Lexer::T_ON)) {
$this->match(Lexer::T_ON);
$join->whereType = AST\Join::JOIN_WHERE_ON;
} else {
$this->match(Lexer::T_WITH);
}
$join->conditionalExpression = $this->ConditionalExpression();
}
return $join;
}
/**
* IndexBy ::= "INDEX" "BY" SimpleStateFieldPathExpression
*
* @return \Doctrine\ORM\Query\AST\IndexBy
*/
public function IndexBy()
{
$this->match(Lexer::T_INDEX);
$this->match(Lexer::T_BY);
$pathExp = $this->SimpleStateFieldPathExpression();
// Add the INDEX BY info to the query component
$parts = $pathExp->parts;
$this->_queryComponents[$pathExp->identificationVariable]['map'] = $parts[0];
return $pathExp;
}
/**
* SelectExpression ::=
* IdentificationVariable | StateFieldPathExpression |
* (AggregateExpression | "(" Subselect ")" | FunctionDeclaration) [["AS"] AliasResultVariable]
*
* @return \Doctrine\ORM\Query\AST\SelectExpression
*/
public function SelectExpression()
{
$expression = null;
$fieldAliasIdentificationVariable = null;
$peek = $this->_lexer->glimpse();
// First we recognize for an IdentificationVariable (DQL class alias)
if ($peek['value'] != '.' && $peek['value'] != '(' && $this->_lexer->lookahead['type'] === Lexer::T_IDENTIFIER) {
$expression = $this->IdentificationVariable();
} else if (($isFunction = $this->_isFunction()) !== false || $this->_isSubselect()) {
if ($isFunction) {
if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
$expression = $this->AggregateExpression();
} else {
$expression = $this->FunctionDeclaration();
}
} else {
$this->match(Lexer::T_OPEN_PARENTHESIS);
$expression = $this->Subselect();
$this->match(Lexer::T_CLOSE_PARENTHESIS);
}
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
$token = $this->_lexer->lookahead;
$fieldAliasIdentificationVariable = $this->AliasResultVariable();
// Include AliasResultVariable in query components.
$this->_queryComponents[$fieldAliasIdentificationVariable] = array(
'resultVariable' => $expression,
'nestingLevel' => $this->_nestingLevel,
'token' => $token,
);
}
} else {
// Deny hydration of partial objects if doctrine.forcePartialLoad query hint not defined
if (
$this->_query->getHydrationMode() == Query::HYDRATE_OBJECT &&
! $this->_query->getHint(Query::HINT_FORCE_PARTIAL_LOAD)
) {
throw DoctrineException::partialObjectsAreDangerous();
}
$expression = $this->StateFieldPathExpression();
}
return new AST\SelectExpression($expression, $fieldAliasIdentificationVariable);
}
/**
* SimpleSelectExpression ::= StateFieldPathExpression | IdentificationVariable | (AggregateExpression [["AS"] AliasResultVariable])
*
* @return \Doctrine\ORM\Query\AST\SimpleSelectExpression
*/
public function SimpleSelectExpression()
{
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
// SingleValuedPathExpression | IdentificationVariable
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '.') {
return new AST\SimpleSelectExpression($this->StateFieldPathExpression());
}
$this->match(Lexer::T_IDENTIFIER);
return new AST\SimpleSelectExpression($this->_lexer->token['value']);
}
$expr = new AST\SimpleSelectExpression($this->AggregateExpression());
if ($this->_lexer->isNextToken(Lexer::T_AS)) {
$this->match(Lexer::T_AS);
}
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
$token = $this->_lexer->lookahead;
$resultVariable = $this->AliasResultVariable();
$expr->fieldIdentificationVariable = $resultVariable;
// Include AliasResultVariable in query components.
$this->_queryComponents[$resultVariable] = array(
'resultvariable' => $expr,
'nestingLevel' => $this->_nestingLevel,
'token' => $token,
);
}
return $expr;
}
/**
* ConditionalExpression ::= ConditionalTerm {"OR" ConditionalTerm}*
*
* @return \Doctrine\ORM\Query\AST\ConditionalExpression
*/
public function ConditionalExpression()
{
$conditionalTerms = array();
$conditionalTerms[] = $this->ConditionalTerm();
while ($this->_lexer->isNextToken(Lexer::T_OR)) {
$this->match(Lexer::T_OR);
$conditionalTerms[] = $this->ConditionalTerm();
}
return new AST\ConditionalExpression($conditionalTerms);
}
/**
* ConditionalTerm ::= ConditionalFactor {"AND" ConditionalFactor}*
*
* @return \Doctrine\ORM\Query\AST\ConditionalTerm
*/
public function ConditionalTerm()
{
$conditionalFactors = array();
$conditionalFactors[] = $this->ConditionalFactor();
while ($this->_lexer->isNextToken(Lexer::T_AND)) {
$this->match(Lexer::T_AND);
$conditionalFactors[] = $this->ConditionalFactor();
}
return new AST\ConditionalTerm($conditionalFactors);
}
/**
* ConditionalFactor ::= ["NOT"] ConditionalPrimary
*
* @return \Doctrine\ORM\Query\AST\ConditionalFactor
*/
public function ConditionalFactor()
{
$not = false;
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$not = true;
}
$condFactor = new AST\ConditionalFactor($this->ConditionalPrimary());
$condFactor->not = $not;
return $condFactor;
}
/**
* ConditionalPrimary ::= SimpleConditionalExpression | "(" ConditionalExpression ")"
*
* @return Doctrine\ORM\Query\AST\ConditionalPrimary
*/
public function ConditionalPrimary()
{
$condPrimary = new AST\ConditionalPrimary;
if ($this->_lexer->isNextToken(Lexer::T_OPEN_PARENTHESIS)) {
// Peek beyond the matching closing paranthesis ')'
$numUnmatched = 1;
$peek = $this->_lexer->peek();
while ($numUnmatched > 0 && $peek !== null) {
if ($peek['value'] == ')') {
--$numUnmatched;
} else if ($peek['value'] == '(') {
++$numUnmatched;
}
$peek = $this->_lexer->peek();
}
$this->_lexer->resetPeek();
if (in_array($peek['value'], array("=", "<", "<=", "<>", ">", ">=", "!=")) ||
$peek['type'] === Lexer::T_NOT ||
$peek['type'] === Lexer::T_BETWEEN ||
$peek['type'] === Lexer::T_LIKE ||
$peek['type'] === Lexer::T_IN ||
$peek['type'] === Lexer::T_IS ||
$peek['type'] === Lexer::T_EXISTS) {
$condPrimary->simpleConditionalExpression = $this->SimpleConditionalExpression();
} else {
$this->match(Lexer::T_OPEN_PARENTHESIS);
$condPrimary->conditionalExpression = $this->ConditionalExpression();
$this->match(Lexer::T_CLOSE_PARENTHESIS);
}
} else {
$condPrimary->simpleConditionalExpression = $this->SimpleConditionalExpression();
}
return $condPrimary;
}
/**
* SimpleConditionalExpression ::=
* ComparisonExpression | BetweenExpression | LikeExpression |
* InExpression | NullComparisonExpression | ExistsExpression |
* EmptyCollectionComparisonExpression | CollectionMemberExpression
*/
public function SimpleConditionalExpression()
{
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$token = $this->_lexer->glimpse();
} else {
$token = $this->_lexer->lookahead;
}
if ($token['type'] === Lexer::T_EXISTS) {
return $this->ExistsExpression();
}
$pathExprOrInputParam = false;
if ($token['type'] === Lexer::T_IDENTIFIER || $token['type'] === Lexer::T_INPUT_PARAMETER) {
// Peek beyond the PathExpression
$pathExprOrInputParam = true;
$peek = $this->_lexer->peek();
while ($peek['value'] === '.') {
$this->_lexer->peek();
$peek = $this->_lexer->peek();
}
// Also peek beyond a NOT if there is one
if ($peek['type'] === Lexer::T_NOT) {
$peek = $this->_lexer->peek();
}
$token = $peek;
// We need to go even further in case of IS (differenciate between NULL and EMPTY)
$lookahead = $this->_lexer->peek();
// Also peek beyond a NOT if there is one
if ($lookahead['type'] === Lexer::T_NOT) {
$lookahead = $this->_lexer->peek();
}
$this->_lexer->resetPeek();
}
if ($pathExprOrInputParam) {
switch ($token['type']) {
case Lexer::T_EQUALS:
case Lexer::T_LOWER_THAN:
case Lexer::T_GREATER_THAN:
case Lexer::T_NEGATE:
case Lexer::T_OPEN_PARENTHESIS:
return $this->ComparisonExpression();
case Lexer::T_BETWEEN:
return $this->BetweenExpression();
case Lexer::T_LIKE:
return $this->LikeExpression();
case Lexer::T_IN:
return $this->InExpression();
case Lexer::T_IS:
if ($lookahead['type'] == Lexer::T_NULL) {
return $this->NullComparisonExpression();
}
return $this->EmptyCollectionComparisonExpression();
case Lexer::T_MEMBER:
return $this->CollectionMemberExpression();
default:
$this->syntaxError();
}
}
return $this->ComparisonExpression();
}
/**
* EmptyCollectionComparisonExpression ::= CollectionValuedPathExpression "IS" ["NOT"] "EMPTY"
*
* @return \Doctrine\ORM\Query\AST\EmptyCollectionComparisonExpression
*/
public function EmptyCollectionComparisonExpression()
{
$emptyColletionCompExpr = new AST\EmptyCollectionComparisonExpression(
$this->CollectionValuedPathExpression()
);
$this->match(Lexer::T_IS);
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$emptyColletionCompExpr->not = true;
}
$this->match(Lexer::T_EMPTY);
return $emptyColletionCompExpr;
}
/**
* CollectionMemberExpression ::= EntityExpression ["NOT"] "MEMBER" ["OF"] CollectionValuedPathExpression
*
* EntityExpression ::= SingleValuedAssociationPathExpression | SimpleEntityExpression
* SimpleEntityExpression ::= IdentificationVariable | InputParameter
*
* @return \Doctrine\ORM\Query\AST\CollectionMemberExpression
*/
public function CollectionMemberExpression()
{
$not = false;
$entityExpr = $this->EntityExpression();
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$not = true;
$this->match(Lexer::T_NOT);
}
$this->match(Lexer::T_MEMBER);
if ($this->_lexer->isNextToken(Lexer::T_OF)) {
$this->match(Lexer::T_OF);
}
$collMemberExpr = new AST\CollectionMemberExpression(
$entityExpr, $this->CollectionValuedPathExpression()
);
$collMemberExpr->not = $not;
return $collMemberExpr;
}
/**
* Literal ::= string | char | integer | float | boolean
*
* @return string
*/
public function Literal()
{
switch ($this->_lexer->lookahead['type']) {
case Lexer::T_STRING:
$this->match(Lexer::T_STRING);
return new AST\Literal(AST\Literal::STRING, $this->_lexer->token['value']);
case Lexer::T_INTEGER:
case Lexer::T_FLOAT:
$this->match(
$this->_lexer->isNextToken(Lexer::T_INTEGER) ? Lexer::T_INTEGER : Lexer::T_FLOAT
);
return new AST\Literal(AST\Literal::NUMERIC, $this->_lexer->token['value']);
case Lexer::T_TRUE:
case Lexer::T_FALSE:
$this->match(
$this->_lexer->isNextToken(Lexer::T_TRUE) ? Lexer::T_TRUE : Lexer::T_FALSE
);
return new AST\Literal(AST\Literal::BOOLEAN, $this->_lexer->token['value']);
default:
$this->syntaxError('Literal');
}
}
/**
* InParameter ::= Literal | InputParameter
*
* @return string | \Doctrine\ORM\Query\AST\InputParameter
*/
public function InParameter()
{
if ($this->_lexer->lookahead['type'] == Lexer::T_INPUT_PARAMETER) {
return $this->InputParameter();
}
return $this->Literal();
}
/**
* InputParameter ::= PositionalParameter | NamedParameter
*
* @return \Doctrine\ORM\Query\AST\InputParameter
*/
public function InputParameter()
{
$this->match(Lexer::T_INPUT_PARAMETER);
return new AST\InputParameter($this->_lexer->token['value']);
}
/**
* ArithmeticExpression ::= SimpleArithmeticExpression | "(" Subselect ")"
*
* @return \Doctrine\ORM\Query\AST\ArithmeticExpression
*/
public function ArithmeticExpression()
{
$expr = new AST\ArithmeticExpression;
if ($this->_lexer->isNextToken(Lexer::T_OPEN_PARENTHESIS)) {
$peek = $this->_lexer->glimpse();
if ($peek['type'] === Lexer::T_SELECT) {
$this->match(Lexer::T_OPEN_PARENTHESIS);
$expr->subselect = $this->Subselect();
$this->match(Lexer::T_CLOSE_PARENTHESIS);
return $expr;
}
}
$expr->simpleArithmeticExpression = $this->SimpleArithmeticExpression();
return $expr;
}
/**
* SimpleArithmeticExpression ::= ArithmeticTerm {("+" | "-") ArithmeticTerm}*
*
* @return \Doctrine\ORM\Query\AST\SimpleArithmeticExpression
*/
public function SimpleArithmeticExpression()
{
$terms = array();
$terms[] = $this->ArithmeticTerm();
while (($isPlus = $this->_lexer->isNextToken(Lexer::T_PLUS)) || $this->_lexer->isNextToken(Lexer::T_MINUS)) {
$this->match(($isPlus) ? Lexer::T_PLUS : Lexer::T_MINUS);
$terms[] = $this->_lexer->token['value'];
$terms[] = $this->ArithmeticTerm();
}
return new AST\SimpleArithmeticExpression($terms);
}
/**
* ArithmeticTerm ::= ArithmeticFactor {("*" | "/") ArithmeticFactor}*
*
* @return \Doctrine\ORM\Query\AST\ArithmeticTerm
*/
public function ArithmeticTerm()
{
$factors = array();
$factors[] = $this->ArithmeticFactor();
while (($isMult = $this->_lexer->isNextToken(Lexer::T_MULTIPLY)) || $this->_lexer->isNextToken(Lexer::T_DIVIDE)) {
$this->match(($isMult) ? Lexer::T_MULTIPLY : Lexer::T_DIVIDE);
$factors[] = $this->_lexer->token['value'];
$factors[] = $this->ArithmeticFactor();
}
return new AST\ArithmeticTerm($factors);
}
/**
* ArithmeticFactor ::= [("+" | "-")] ArithmeticPrimary
*
* @return \Doctrine\ORM\Query\AST\ArithmeticFactor
*/
public function ArithmeticFactor()
{
$sign = null;
if (($isPlus = $this->_lexer->isNextToken(Lexer::T_PLUS)) || $this->_lexer->isNextToken(Lexer::T_MINUS)) {
$this->match(($isPlus) ? Lexer::T_PLUS : Lexer::T_MINUS);
$sign = $isPlus;
}
return new AST\ArithmeticFactor($this->ArithmeticPrimary(), $sign);
}
/**
* ArithmeticPrimary ::= SingleValuedPathExpression | Literal | "(" SimpleArithmeticExpression ")"
* | FunctionsReturningNumerics | AggregateExpression | FunctionsReturningStrings
* | FunctionsReturningDatetime | IdentificationVariable
*/
public function ArithmeticPrimary()
{
if ($this->_lexer->isNextToken(Lexer::T_OPEN_PARENTHESIS)) {
$this->match(Lexer::T_OPEN_PARENTHESIS);
$expr = $this->SimpleArithmeticExpression();
$this->match(Lexer::T_CLOSE_PARENTHESIS);
return $expr;
}
switch ($this->_lexer->lookahead['type']) {
case Lexer::T_IDENTIFIER:
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '(') {
return $this->FunctionDeclaration();
}
if ($peek['value'] == '.') {
return $this->SingleValuedPathExpression();
}
return $this->IdentificationVariable();
case Lexer::T_INPUT_PARAMETER:
return $this->InputParameter();
default:
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '(') {
if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
return $this->AggregateExpression();
}
return $this->FunctionDeclaration();
} else {
return $this->Literal();
}
}
}
/**
* StringExpression ::= StringPrimary | "(" Subselect ")"
*
* @return \Doctrine\ORM\Query\AST\StringPrimary |
* \Doctrine]ORM\Query\AST\Subselect
*/
public function StringExpression()
{
if ($this->_lexer->isNextToken(Lexer::T_OPEN_PARENTHESIS)) {
$peek = $this->_lexer->glimpse();
if ($peek['type'] === Lexer::T_SELECT) {
$this->match(Lexer::T_OPEN_PARENTHESIS);
$expr = $this->Subselect();
$this->match(Lexer::T_CLOSE_PARENTHESIS);
return $expr;
}
}
return $this->StringPrimary();
}
/**
* StringPrimary ::= StateFieldPathExpression | string | InputParameter | FunctionsReturningStrings | AggregateExpression
*/
public function StringPrimary()
{
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER)) {
$peek = $this->_lexer->glimpse();
if ($peek['value'] == '.') {
return $this->StateFieldPathExpression();
} else if ($peek['value'] == '(') {
return $this->FunctionsReturningStrings();
} else {
$this->syntaxError("'.' or '('");
}
} else if ($this->_lexer->isNextToken(Lexer::T_STRING)) {
$this->match(Lexer::T_STRING);
return $this->_lexer->token['value'];
} else if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
return $this->InputParameter();
} else if ($this->_isAggregateFunction($this->_lexer->lookahead['type'])) {
return $this->AggregateExpression();
}
$this->syntaxError('StateFieldPathExpression | string | InputParameter | FunctionsReturningStrings | AggregateExpression');
}
/**
* EntityExpression ::= SingleValuedAssociationPathExpression | SimpleEntityExpression
*
* @return \Doctrine\ORM\Query\AST\SingleValuedAssociationPathExpression |
* \Doctrine\ORM\Query\AST\SimpleEntityExpression
*/
public function EntityExpression()
{
$glimpse = $this->_lexer->glimpse();
if ($this->_lexer->isNextToken(Lexer::T_IDENTIFIER) && $glimpse['value'] === '.') {
return $this->SingleValuedAssociationPathExpression();
}
return $this->SimpleEntityExpression();
}
/**
* SimpleEntityExpression ::= IdentificationVariable | InputParameter
*
* @return string | \Doctrine\ORM\Query\AST\InputParameter
*/
public function SimpleEntityExpression()
{
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
return $this->InputParameter();
}
return $this->IdentificationVariable();
}
/**
* AggregateExpression ::=
* ("AVG" | "MAX" | "MIN" | "SUM") "(" ["DISTINCT"] StateFieldPathExpression ")" |
* "COUNT" "(" ["DISTINCT"] (IdentificationVariable | SingleValuedPathExpression) ")"
*
* @return \Doctrine\ORM\Query\AST\AggregateExpression
*/
public function AggregateExpression()
{
$isDistinct = false;
$functionName = '';
if ($this->_lexer->isNextToken(Lexer::T_COUNT)) {
$this->match(Lexer::T_COUNT);
$functionName = $this->_lexer->token['value'];
$this->match(Lexer::T_OPEN_PARENTHESIS);
if ($this->_lexer->isNextToken(Lexer::T_DISTINCT)) {
$this->match(Lexer::T_DISTINCT);
$isDistinct = true;
}
$pathExp = $this->SingleValuedPathExpression();
$this->match(Lexer::T_CLOSE_PARENTHESIS);
} else {
if ($this->_lexer->isNextToken(Lexer::T_AVG)) {
$this->match(Lexer::T_AVG);
} else if ($this->_lexer->isNextToken(Lexer::T_MAX)) {
$this->match(Lexer::T_MAX);
} else if ($this->_lexer->isNextToken(Lexer::T_MIN)) {
$this->match(Lexer::T_MIN);
} else if ($this->_lexer->isNextToken(Lexer::T_SUM)) {
$this->match(Lexer::T_SUM);
} else {
$this->syntaxError('One of: MAX, MIN, AVG, SUM, COUNT');
}
$functionName = $this->_lexer->token['value'];
$this->match(Lexer::T_OPEN_PARENTHESIS);
$pathExp = $this->StateFieldPathExpression();
$this->match(Lexer::T_CLOSE_PARENTHESIS);
}
return new AST\AggregateExpression($functionName, $pathExp, $isDistinct);
}
/**
* QuantifiedExpression ::= ("ALL" | "ANY" | "SOME") "(" Subselect ")"
*
* @return \Doctrine\ORM\Query\AST\QuantifiedExpression
*/
public function QuantifiedExpression()
{
$type = '';
if ($this->_lexer->isNextToken(Lexer::T_ALL)) {
$this->match(Lexer::T_ALL);
$type = 'ALL';
} else if ($this->_lexer->isNextToken(Lexer::T_ANY)) {
$this->match(Lexer::T_ANY);
$type = 'ANY';
} else if ($this->_lexer->isNextToken(Lexer::T_SOME)) {
$this->match(Lexer::T_SOME);
$type = 'SOME';
} else {
$this->syntaxError('ALL, ANY or SOME');
}
$this->match(Lexer::T_OPEN_PARENTHESIS);
$qExpr = new AST\QuantifiedExpression($this->Subselect());
$qExpr->type = $type;
$this->match(Lexer::T_CLOSE_PARENTHESIS);
return $qExpr;
}
/**
* BetweenExpression ::= ArithmeticExpression ["NOT"] "BETWEEN" ArithmeticExpression "AND" ArithmeticExpression
*
* @return \Doctrine\ORM\Query\AST\BetweenExpression
*/
public function BetweenExpression()
{
$not = false;
$arithExpr1 = $this->ArithmeticExpression();
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$not = true;
}
$this->match(Lexer::T_BETWEEN);
$arithExpr2 = $this->ArithmeticExpression();
$this->match(Lexer::T_AND);
$arithExpr3 = $this->ArithmeticExpression();
$betweenExpr = new AST\BetweenExpression($arithExpr1, $arithExpr2, $arithExpr3);
$betweenExpr->not = $not;
return $betweenExpr;
}
/**
* ComparisonExpression ::= ArithmeticExpression ComparisonOperator ( QuantifiedExpression | ArithmeticExpression )
*
* @return \Doctrine\ORM\Query\AST\ComparisonExpression
*/
public function ComparisonExpression()
{
$peek = $this->_lexer->glimpse();
$leftExpr = $this->ArithmeticExpression();
$operator = $this->ComparisonOperator();
if ($this->_isNextAllAnySome()) {
$rightExpr = $this->QuantifiedExpression();
} else {
$rightExpr = $this->ArithmeticExpression();
}
return new AST\ComparisonExpression($leftExpr, $operator, $rightExpr);
}
/**
* InExpression ::= StateFieldPathExpression ["NOT"] "IN" "(" (InParameter {"," InParameter}* | Subselect) ")"
*
* @return \Doctrine\ORM\Query\AST\InExpression
*/
public function InExpression()
{
$inExpression = new AST\InExpression($this->StateFieldPathExpression());
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$inExpression->not = true;
}
$this->match(Lexer::T_IN);
$this->match(Lexer::T_OPEN_PARENTHESIS);
if ($this->_lexer->isNextToken(Lexer::T_SELECT)) {
$inExpression->subselect = $this->Subselect();
} else {
$literals = array();
$literals[] = $this->InParameter();
while ($this->_lexer->isNextToken(Lexer::T_COMMA)) {
$this->match(Lexer::T_COMMA);
$literals[] = $this->InParameter();
}
$inExpression->literals = $literals;
}
$this->match(Lexer::T_CLOSE_PARENTHESIS);
return $inExpression;
}
/**
* LikeExpression ::= StringExpression ["NOT"] "LIKE" (string | input_parameter) ["ESCAPE" char]
*
* @return \Doctrine\ORM\Query\AST\LikeExpression
*/
public function LikeExpression()
{
$stringExpr = $this->StringExpression();
$not = false;
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$not = true;
}
$this->match(Lexer::T_LIKE);
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
$stringPattern = new AST\InputParameter($this->_lexer->token['value']);
} else {
$this->match(Lexer::T_STRING);
$stringPattern = $this->_lexer->token['value'];
}
$escapeChar = null;
if ($this->_lexer->lookahead['type'] === Lexer::T_ESCAPE) {
$this->match(Lexer::T_ESCAPE);
$this->match(Lexer::T_STRING);
$escapeChar = $this->_lexer->token['value'];
}
$likeExpr = new AST\LikeExpression($stringExpr, $stringPattern, $escapeChar);
$likeExpr->not = $not;
return $likeExpr;
}
/**
* NullComparisonExpression ::= (SingleValuedPathExpression | InputParameter) "IS" ["NOT"] "NULL"
*
* @return \Doctrine\ORM\Query\AST\NullComparisonExpression
*/
public function NullComparisonExpression()
{
if ($this->_lexer->isNextToken(Lexer::T_INPUT_PARAMETER)) {
$this->match(Lexer::T_INPUT_PARAMETER);
$expr = new AST\InputParameter($this->_lexer->token['value']);
} else {
$expr = $this->SingleValuedPathExpression();
}
$nullCompExpr = new AST\NullComparisonExpression($expr);
$this->match(Lexer::T_IS);
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$nullCompExpr->not = true;
}
$this->match(Lexer::T_NULL);
return $nullCompExpr;
}
/**
* ExistsExpression ::= ["NOT"] "EXISTS" "(" Subselect ")"
*
* @return \Doctrine\ORM\Query\AST\ExistsExpression
*/
public function ExistsExpression()
{
$not = false;
if ($this->_lexer->isNextToken(Lexer::T_NOT)) {
$this->match(Lexer::T_NOT);
$not = true;
}
$this->match(Lexer::T_EXISTS);
$this->match(Lexer::T_OPEN_PARENTHESIS);
$existsExpression = new AST\ExistsExpression($this->Subselect());
$existsExpression->not = $not;
$this->match(Lexer::T_CLOSE_PARENTHESIS);
return $existsExpression;
}
/**
* ComparisonOperator ::= "=" | "<" | "<=" | "<>" | ">" | ">=" | "!="
*
* @return string
*/
public function ComparisonOperator()
{
switch ($this->_lexer->lookahead['value']) {
case '=':
$this->match(Lexer::T_EQUALS);
return '=';
case '<':
$this->match(Lexer::T_LOWER_THAN);
$operator = '<';
if ($this->_lexer->isNextToken(Lexer::T_EQUALS)) {
$this->match(Lexer::T_EQUALS);
$operator .= '=';
} else if ($this->_lexer->isNextToken(Lexer::T_GREATER_THAN)) {
$this->match(Lexer::T_GREATER_THAN);
$operator .= '>';
}
return $operator;
case '>':
$this->match(Lexer::T_GREATER_THAN);
$operator = '>';
if ($this->_lexer->isNextToken(Lexer::T_EQUALS)) {
$this->match(Lexer::T_EQUALS);
$operator .= '=';
}
return $operator;
case '!':
$this->match(Lexer::T_NEGATE);
$this->match(Lexer::T_EQUALS);
return '<>';
default:
$this->syntaxError('=, <, <=, <>, >, >=, !=');
}
}
/**
* FunctionDeclaration ::= FunctionsReturningStrings | FunctionsReturningNumerics | FunctionsReturningDatetime
*/
public function FunctionDeclaration()
{
$funcName = $this->_lexer->lookahead['value'];
if ($this->_isStringFunction($funcName)) {
return $this->FunctionsReturningStrings();
} else if ($this->_isNumericFunction($funcName)) {
return $this->FunctionsReturningNumerics();
} else if ($this->_isDatetimeFunction($funcName)) {
return $this->FunctionsReturningDatetime();
}
$this->syntaxError('Known function.');
}
/**
* FunctionsReturningNumerics ::=
* "LENGTH" "(" StringPrimary ")" |
* "LOCATE" "(" StringPrimary "," StringPrimary ["," SimpleArithmeticExpression]")" |
* "ABS" "(" SimpleArithmeticExpression ")" |
* "SQRT" "(" SimpleArithmeticExpression ")" |
* "MOD" "(" SimpleArithmeticExpression "," SimpleArithmeticExpression ")" |
* "SIZE" "(" CollectionValuedPathExpression ")"
*/
public function FunctionsReturningNumerics()
{
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_NUMERIC_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
return $function;
}
/**
* FunctionsReturningDateTime ::= "CURRENT_DATE" | "CURRENT_TIME" | "CURRENT_TIMESTAMP"
*/
public function FunctionsReturningDatetime()
{
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_DATETIME_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
return $function;
}
/**
* FunctionsReturningStrings ::=
* "CONCAT" "(" StringPrimary "," StringPrimary ")" |
* "SUBSTRING" "(" StringPrimary "," SimpleArithmeticExpression "," SimpleArithmeticExpression ")" |
* "TRIM" "(" [["LEADING" | "TRAILING" | "BOTH"] [char] "FROM"] StringPrimary ")" |
* "LOWER" "(" StringPrimary ")" |
* "UPPER" "(" StringPrimary ")"
*/
public function FunctionsReturningStrings()
{
$funcNameLower = strtolower($this->_lexer->lookahead['value']);
$funcClass = self::$_STRING_FUNCTIONS[$funcNameLower];
$function = new $funcClass($funcNameLower);
$function->parse($this);
return $function;
}
}
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