diff -r 000000000000 -r 7f95f8617b0b vendor/doctrine/lib/Doctrine/ORM/Query/AST/PathExpression.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/doctrine/lib/Doctrine/ORM/Query/AST/PathExpression.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,58 @@
+<?php
+/*
+ * 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\AST;
+
+/**
+ * AssociationPathExpression ::= CollectionValuedPathExpression | SingleValuedAssociationPathExpression
+ * SingleValuedPathExpression ::= StateFieldPathExpression | SingleValuedAssociationPathExpression
+ * StateFieldPathExpression ::= SimpleStateFieldPathExpression | SimpleStateFieldAssociationPathExpression
+ * SingleValuedAssociationPathExpression ::= IdentificationVariable "." SingleValuedAssociationField
+ * CollectionValuedPathExpression ::= IdentificationVariable "." CollectionValuedAssociationField
+ * StateField ::= {EmbeddedClassStateField "."}* SimpleStateField
+ * SimpleStateFieldPathExpression ::= IdentificationVariable "." StateField
+ * 
+ * @since   2.0
+ * @author  Guilherme Blanco <guilhermeblanco@hotmail.com>
+ * @author  Jonathan Wage <jonwage@gmail.com>
+ * @author  Roman Borschel <roman@code-factory.org>
+ */
+class PathExpression extends Node
+{
+    const TYPE_COLLECTION_VALUED_ASSOCIATION = 2;
+    const TYPE_SINGLE_VALUED_ASSOCIATION = 4;
+    const TYPE_STATE_FIELD = 8;
+    
+    public $type;
+    public $expectedType;
+    public $identificationVariable;
+    public $field;
+    
+    public function __construct($expectedType, $identificationVariable, $field = null)
+    {
+        $this->expectedType = $expectedType;
+        $this->identificationVariable = $identificationVariable;
+        $this->field = $field;
+    }
+    
+    public function dispatch($walker)
+    {
+        return $walker->walkPathExpression($this);
+    }
+}