[2.0] Changes in DQL grammar for optimization purposes. Implemented new DQL...

[2.0] Changes in DQL grammar for optimization purposes. Implemented new DQL grammar rules and did a couple of TODOs

lib/Doctrine/ORM/AbstractQuery.php

@@ -392,7 +392,7 @@ abstract class AbstractQuery
      * FALSE is returned.
      *
      * @param string $name The name of the hint.
-     * @return mixed The value of the hint or FALSe, if the hint name is not recognized.
+     * @return mixed The value of the hint or FALSE, if the hint name is not recognized.
      */
     public function getHint($name)
     {
@@ -404,7 +404,7 @@ abstract class AbstractQuery
      * iterated over the result.
      *
      * @param array $params The query parameters.
-     * @param integer $hydrationMode The hydratio mode to use.
+     * @param integer $hydrationMode The hydration mode to use.
      * @return IterableResult
      */
     public function iterate(array $params = array(), $hydrationMode = self::HYDRATE_OBJECT)

lib/Doctrine/ORM/Query/AST/PathExpression.php

@@ -26,9 +26,10 @@ namespace Doctrine\ORM\Query\AST;
  */
 class PathExpression extends Node
 {
-    const TYPE_COLLECTION_VALUED_ASSOCIATION = 1;
-    const TYPE_SINGLE_VALUED_ASSOCIATION = 2;
-    const TYPE_STATE_FIELD = 4;
+    const TYPE_SINGLE_VALUED_PATH_EXPRESSION = 1;
+    const TYPE_COLLECTION_VALUED_ASSOCIATION = 2;
+    const TYPE_SINGLE_VALUED_ASSOCIATION = 4;
+    const TYPE_STATE_FIELD = 8;
     
     private $_type;
     private $_identificationVariable;
@@ -51,6 +52,11 @@ class PathExpression extends Node
         return $this->_parts;
     }
     
+    public function setType($type)
+    {
+        $this->_type = $type;
+    }
+    
     public function getType()
     {
         return $this->_type;

lib/Doctrine/ORM/Query/Parser.php

@@ -415,6 +415,10 @@ class Parser
                 case AST\PathExpression::TYPE_COLLECTION_VALUED_ASSOCIATION:
                     $this->_validateCollectionValuedAssociationPathExpression($expr);
                     break;
+                    
+                case AST\PathExpression::TYPE_SINGLE_VALUED_PATH_EXPRESSION:
+                	$this->_validateSingleValuedPathExpression($expr);
+                	break;
 
                 default:
                     $this->semanticalError('Encountered invalid PathExpression.');
@@ -660,7 +664,8 @@ class Parser
             // Deny hydration of partial objects if doctrine.forcePartialLoad query hint not defined 
             if (
                 $this->_query->getHydrationMode() == Query::HYDRATE_OBJECT &&
-                ! $this->_em->getConfiguration()->getAllowPartialObjects()
+                ! $this->_em->getConfiguration()->getAllowPartialObjects() &&
+                ! $this->_query->getHint('doctrine.forcePartialLoad')
             ) {
             	throw DoctrineException::partialObjectsAreDangerous();
             }
@@ -891,9 +896,10 @@ class Parser
     {
         $pathExpr = $this->PathExpression(AST\PathExpression::TYPE_STATE_FIELD);
 
-        if (count($pathExpr->getParts()) > 1) {
-            $this->syntaxError('SimpleStateFieldPathExpression');
-        }
+        // @TODO It seems PathExpression already checks for the minimum amount of parts
+        // if (count($pathExpr->getParts()) > 1) {
+        //     $this->syntaxError('SimpleStateFieldPathExpression');
+        // }
 
         if ( ! empty($this->_deferredPathExpressionStacks)) {
             $exprStack = array_pop($this->_deferredPathExpressionStacks);
@@ -947,6 +953,26 @@ class Parser
 
         return $pathExpr;
     }
+    
+    /**
+     * SingleValuedPathExpression ::= StateFieldPathExpression | SingleValuedAssociationPathExpression
+     */
+    public function SingleValuedPathExpression()
+    {
+        $pathExpr = $this->PathExpression(AST\PathExpression::TYPE_SINGLE_VALUED_PATH_EXPRESSION);
+        
+        if ( ! empty($this->_deferredPathExpressionStacks)) {
+            $exprStack = array_pop($this->_deferredPathExpressionStacks);
+            $exprStack[] = $pathExpr;
+            array_push($this->_deferredPathExpressionStacks, $exprStack);
+
+            return $pathExpr;
+        }
+
+        $this->_validateSingleValuedPathExpression($pathExpr);
+
+        return $pathExpr;
+    }
 
     /**
      * Validates that the given <tt>PathExpression</tt> is a semantically correct
@@ -982,7 +1008,7 @@ class Parser
 
     /**
      * Validates that the given <tt>PathExpression</tt> is a semantically correct
-     * SingleValuedPathExpression as specified in the grammar.
+     * SingleValuedAssociationPathExpression as specified in the grammar.
      *
      * @param PathExpression $pathExpression
      */
@@ -1010,6 +1036,22 @@ class Parser
      * @param PathExpression $pathExpression
      */
     private function _validateStateFieldPathExpression(AST\PathExpression $pathExpression)
+    {
+        $stateFieldSeen = $this->_validateSingleValuedPathExpression($pathExpression);
+
+        if ( ! $stateFieldSeen) {
+            $this->semanticalError('Invalid StateFieldPathExpression. Must end in a state field.');
+        }
+    }
+    
+    /**
+     * Validates that the given <tt>PathExpression</tt> is a semantically correct
+     * SingleValuedPathExpression as specified in the grammar.
+     *
+     * @param PathExpression $pathExpression
+     * @return boolean
+     */
+    private function _validateSingleValuedPathExpression(AST\PathExpression $pathExpression)
     {
         $class = $this->_queryComponents[$pathExpression->getIdentificationVariable()]['metadata'];
         $stateFieldSeen = false;
@@ -1027,10 +1069,16 @@ class Parser
                 $this->semanticalError('SingleValuedAssociationField or StateField expected.');
             }
         }
+        
+        // We need to force the type in PathExpression since SingleValuedPathExpression is in a 
+        // state of recognition of what's is the dealed type (StateField or SingleValuedAssociation)
+        $pathExpression->setType(
+        	($stateFieldSeen) 
+        		? AST\PathExpression::TYPE_STATE_FIELD 
+        		: AST\PathExpression::TYPE_SINGLE_VALUED_ASSOCIATION
+        );
 
-        if ( ! $stateFieldSeen) {
-            $this->semanticalError('Invalid StateFieldPathExpression. Must end in a state field.');
-        }
+        return $stateFieldSeen;
     }
 
     /**
@@ -1042,8 +1090,7 @@ class Parser
      */
     public function PathExpression($type)
     {
-        $this->match(Lexer::T_IDENTIFIER);
-        $identificationVariable = $this->_lexer->token['value'];
+        $identificationVariable = $this->IdentificationVariable();
         
         $parts = array();
 
@@ -1081,15 +1128,11 @@ class Parser
             return new AST\InputParameter($this->_lexer->token['value']);
         }
         
-        $this->match(Lexer::T_IDENTIFIER);
-        
-        return $this->_lexer->token['value'];
+        return $this->IdentificationVariable();
     }
 
     /**
      * NullComparisonExpression ::= (SingleValuedPathExpression | InputParameter) "IS" ["NOT"] "NULL"
-     *
-     * @todo Implementation incomplete for SingleValuedPathExpression.
      */
     public function NullComparisonExpression()
     {
@@ -1097,8 +1140,7 @@ class Parser
             $this->match(Lexer::T_INPUT_PARAMETER);
             $expr = new AST\InputParameter($this->_lexer->token['value']);
         } else {
-            //TODO: Support SingleValuedAssociationPathExpression
-            $expr = $this->StateFieldPathExpression();
+            $expr = $this->SingleValuedPathExpression();
         }
 
         $nullCompExpr = new AST\NullComparisonExpression($expr);
@@ -1117,9 +1159,7 @@ class Parser
     /**
      * AggregateExpression ::=
      *  ("AVG" | "MAX" | "MIN" | "SUM") "(" ["DISTINCT"] StateFieldPathExpression ")" |
-     *  "COUNT" "(" ["DISTINCT"] (IdentificationVariable | SingleValuedAssociationPathExpression | StateFieldPathExpression) ")"
-     *
-     *  @todo Implementation incomplete. Support for SingleValuedAssociationPathExpression.
+     *  "COUNT" "(" ["DISTINCT"] (IdentificationVariable | SingleValuedPathExpression) ")"
      */
     public function AggregateExpression()
     {
@@ -1136,8 +1176,7 @@ class Parser
                 $isDistinct = true;
             }
 
-            //TODO: Support SingleValuedAssociationPathExpression
-            $pathExp = $this->StateFieldPathExpression();
+            $pathExp = $this->SingleValuedPathExpression();
             $this->match(')');
         } else {
             if ($this->_lexer->isNextToken(Lexer::T_AVG)) {
@@ -1878,11 +1917,9 @@ class Parser
     }
 
     /**
-     * ArithmeticPrimary ::= StateFieldPathExpression | Literal | "(" SimpleArithmeticExpression ")"
+     * ArithmeticPrimary ::= SingleValuedPathExpression | Literal | "(" SimpleArithmeticExpression ")"
      *          | FunctionsReturningNumerics | AggregateExpression | FunctionsReturningStrings
-     *          | FunctionsReturningDatetime | IdentificationVariable | SingleValuedAssociationPathExpression
-     *
-     * @todo IdentificationVariable | SingleValuedAssociationPathExpression
+     *          | FunctionsReturningDatetime | IdentificationVariable
      */
     public function ArithmeticPrimary()
     {
@@ -1903,14 +1940,10 @@ class Parser
                 }
 
                 if ($peek['value'] == '.') {
-                    //TODO: SingleValuedAssociationPathExpression
-                    return $this->StateFieldPathExpression();
+                    return $this->SingleValuedPathExpression();
                 }
 
-                $identificationVariable = $this->_lexer->lookahead['value'];
-                $this->match($identificationVariable);
-
-                return $identificationVariable;
+                return $this->IdentificationVariable();
 
             case Lexer::T_INPUT_PARAMETER:
                 $this->match($this->_lexer->lookahead['value']);

lib/Doctrine/ORM/Query/SqlWalker.php

@@ -1065,7 +1065,7 @@ class SqlWalker implements TreeWalker
         if ($leftExpr instanceof AST\Node) {
             $sql .= $leftExpr->dispatch($this);
         } else {
-            $sql .= $leftExpr; //TODO: quote()
+            $sql .= $this->_conn->quote($leftExpr);
         }
         
         $sql .= ' ' . $compExpr->getOperator() . ' ';
@@ -1073,7 +1073,7 @@ class SqlWalker implements TreeWalker
         if ($rightExpr instanceof AST\Node) {
             $sql .= $rightExpr->dispatch($this);
         } else {
-            $sql .= $rightExpr; //TODO: quote()
+            $sql .= $this->_conn->quote($rightExpr);
         }
 
         return $sql;

tests/Doctrine/Tests/ORM/Query/LanguageRecognitionTest.php

@@ -37,10 +37,15 @@ class LanguageRecognitionTest extends \Doctrine\Tests\OrmTestCase
         }
     }
     
-    public function parseDql($dql)
+    public function parseDql($dql, $hints = array())
     {
         $query = $this->_em->createQuery($dql);
         $query->setDql($dql);
+        
+        foreach ($hints as $key => $value) {
+        	$query->setHint($key, $value);
+        }
+        
         $parser = new \Doctrine\ORM\Query\Parser($query);
         $parser->setSqlTreeWalker(new \Doctrine\Tests\Mocks\MockTreeWalker);
         
@@ -339,8 +344,10 @@ class LanguageRecognitionTest extends \Doctrine\Tests\OrmTestCase
     {
         $oldValue = $this->_em->getConfiguration()->getAllowPartialObjects();
         $this->_em->getConfiguration()->setAllowPartialObjects(false);
-        
-        $this->parseDql('SELECT u.name FROM Doctrine\Tests\Models\CMS\CmsUser u');
+                
+        $this->parseDql('SELECT u.name FROM Doctrine\Tests\Models\CMS\CmsUser u', array(
+        	'doctrine.forcePartialLoad' => false
+        ));
         
         $this->_em->getConfiguration()->setAllowPartialObjects($oldValue);
     }