diff -r 6cebeb1f386a -r ad0eeb0f7a8d schema.py
--- a/schema.py	Thu Sep 29 14:07:37 2011 +0200
+++ b/schema.py	Thu Sep 29 14:47:04 2011 +0200
@@ -665,6 +665,8 @@
     # these are overridden by set_log_methods below
     # only defining here to prevent pylint from complaining
     info = warning = error = critical = exception = debug = lambda msg,*a,**kw: None
+    # to be defined in concrete classes
+    full_rql = None
 
     def __init__(self, expression, mainvars, eid):
         self.eid = eid # eid of the entity representing this rql expression