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20 namespace Doctrine\ORM\Query\AST;
23 * AssociationPathExpression ::= CollectionValuedPathExpression | SingleValuedAssociationPathExpression
24 * SingleValuedPathExpression ::= StateFieldPathExpression | SingleValuedAssociationPathExpression
25 * StateFieldPathExpression ::= SimpleStateFieldPathExpression | SimpleStateFieldAssociationPathExpression
26 * SingleValuedAssociationPathExpression ::= IdentificationVariable "." SingleValuedAssociationField
27 * CollectionValuedPathExpression ::= IdentificationVariable "." CollectionValuedAssociationField
28 * StateField ::= {EmbeddedClassStateField "."}* SimpleStateField
29 * SimpleStateFieldPathExpression ::= IdentificationVariable "." StateField
32 * @author Guilherme Blanco <guilhermeblanco@hotmail.com>
33 * @author Jonathan Wage <jonwage@gmail.com>
34 * @author Roman Borschel <roman@code-factory.org>
36 class PathExpression extends Node
38 const TYPE_COLLECTION_VALUED_ASSOCIATION = 2;
39 const TYPE_SINGLE_VALUED_ASSOCIATION = 4;
40 const TYPE_STATE_FIELD = 8;
44 public $identificationVariable;
47 public function __construct($expectedType, $identificationVariable, $field = null)
49 $this->expectedType = $expectedType;
50 $this->identificationVariable = $identificationVariable;
51 $this->field = $field;
54 public function dispatch($walker)
56 return $walker->walkPathExpression($this);