Index: src/main/java/org/apache/jackrabbit/ocm/mapper/model/ClassDescriptor.java
===================================================================
--- .	(revision 647876)
+++ .	(working copy)
@@ -288,7 +288,8 @@
      * @return true if the class has an ID
      */
     public boolean hasIdField() {
-        return (this.idFieldDescriptor != null && this.idFieldDescriptor.isId());
+   		return (this.getIdFieldDescriptor() != null && this
+    				.getIdFieldDescriptor().isId());
     }
 
     /**