# HG changeset patch
# User Sylvain Thénault <sylvain.thenault@logilab.fr>
# Date 1326797732 -3600
# Node ID 77aa753dcd6bd87f2d805f17e9abf40612ded743
# Parent  6dececcaf45486e768840d0d7f169c64d78145c3# Parent  20809488fe566c18f98df24553472acffe387a99
backport stable

diff -r 6dececcaf454 -r 77aa753dcd6b schema.py
--- a/schema.py	Tue Jan 17 11:49:23 2012 +0100
+++ b/schema.py	Tue Jan 17 11:55:32 2012 +0100
@@ -666,6 +666,12 @@
     full_rql = None
 
     def __init__(self, expression, mainvars, eid):
+        """
+        :type mainvars: sequence of RQL variables' names. Can be provided as a 
+                        comma separated string.
+        :param mainvars: names of the variables being selected.
+
+        """
         self.eid = eid # eid of the entity representing this rql expression
         assert mainvars, 'bad mainvars %s' % mainvars
         if isinstance(mainvars, basestring):