diff --git a/lib/Doctrine/ODM/PHPCR/Mapping/ClassMetadataFactory.php b/lib/Doctrine/ODM/PHPCR/Mapping/ClassMetadataFactory.php
index d6a6068f9..cc0d90a4c 100644
--- a/lib/Doctrine/ODM/PHPCR/Mapping/ClassMetadataFactory.php
+++ b/lib/Doctrine/ODM/PHPCR/Mapping/ClassMetadataFactory.php
@@ -262,4 +262,17 @@ protected function newClassMetadataInstance($className)
     {
         return new ClassMetadata($className);
     }
+
+    /**
+     * Whether the class with the specified name should have its metadata loaded.
+     * This is only the case if it is either mapped as an Entity or a
+     * MappedSuperclass.
+     *
+     * @param string $className
+     * @return boolean
+     */
+    public function isTransient($className)
+    {
+        return $this->driver->isTransient($className);
+    }
 }
diff --git a/lib/vendor/doctrine-common b/lib/vendor/doctrine-common
index 40f1bf16e..1b2a7d9b8 160000
--- a/lib/vendor/doctrine-common
+++ b/lib/vendor/doctrine-common
@@ -1 +1 @@
-Subproject commit 40f1bf16e84ddc5291a6a63aa00b9879c40e3500
+Subproject commit 1b2a7d9b89a886dfb5d862660cf6576bb605dedd