diff -r 73e48b0c77c2 -r 40d7c7e180f1 server/sources/rql2sql.py
--- a/server/sources/rql2sql.py	Wed Jun 02 14:36:54 2010 +0200
+++ b/server/sources/rql2sql.py	Wed Jun 02 14:48:36 2010 +0200
@@ -72,7 +72,7 @@
 FunctionDescr.update_cb_stack = default_update_cb_stack
 
 LENGTH = SQL_FUNCTIONS_REGISTRY.get_function('LENGTH')
-def length_source_execute(source, value):
+def length_source_execute(source, session, value):
     return len(value.getvalue())
 LENGTH.source_execute = length_source_execute