diff -r 000000000000 -r 7f95f8617b0b vendor/doctrine/lib/Doctrine/ORM/Query/AST/Node.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/doctrine/lib/Doctrine/ORM/Query/AST/Node.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,98 @@
+<?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\AST;
+
+/**
+ * Abstract class of an AST node
+ *
+ * @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>
+ */
+abstract class Node
+{
+    /**
+     * Double-dispatch method, supposed to dispatch back to the walker.
+     * 
+     * Implementation is not mandatory for all nodes.
+     * 
+     * @param $walker
+     */
+    public function dispatch($walker)
+    {
+        throw ASTException::noDispatchForNode($this);
+    }
+    
+    /**
+     * Dumps the AST Node into a string representation for information purpose only
+     *
+     * @return string
+     */
+    public function __toString()
+    {
+        return $this->dump($this);
+    }
+    
+    public function dump($obj)
+    {
+        static $ident = 0;
+        
+        $str = '';
+        
+        if ($obj instanceof Node) {
+            $str .= get_class($obj) . '(' . PHP_EOL;
+            $props = get_object_vars($obj);
+                
+            foreach ($props as $name => $prop) {
+                $ident += 4;
+                $str .= str_repeat(' ', $ident) . '"' . $name . '": ' 
+                      . $this->dump($prop) . ',' . PHP_EOL;
+                $ident -= 4;
+            }
+                
+            $str .= str_repeat(' ', $ident) . ')';
+        } else if (is_array($obj)) {
+            $ident += 4;
+            $str .= 'array(';
+            $some = false;
+                
+            foreach ($obj as $k => $v) {
+                $str .= PHP_EOL . str_repeat(' ', $ident) . '"' 
+                      . $k . '" => ' . $this->dump($v) . ',';
+                $some = true;
+            }
+                
+            $ident -= 4;
+            $str .= ($some ? PHP_EOL . str_repeat(' ', $ident) : '') . ')';
+        } else if (is_object($obj)) {
+            $str .= 'instanceof(' . get_class($obj) . ')';
+        } else {
+            $str .= var_export($obj, true);
+        }
+          
+        return $str;
+    }
+}
\ No newline at end of file