# HG changeset patch
# User Sylvain Thénault <sylvain.thenault@logilab.fr>
# Date 1281108902 -7200
# Node ID bf684f1022bfd8ca5050325fcb49fd19906976d1
# Parent  9d83b214066a0af00a4ed36a06d61130d7a21350
[migration] fix crash when adding symmetric relation type

diff -r 9d83b214066a -r bf684f1022bf server/migractions.py
--- a/server/migractions.py	Fri Aug 06 17:34:24 2010 +0200
+++ b/server/migractions.py	Fri Aug 06 17:35:02 2010 +0200
@@ -911,10 +911,15 @@
             self.commit()
             gmap = self.group_mapping()
             cmap = self.cstrtype_mapping()
+            done = set()
             for rdef in rschema.rdefs.itervalues():
                 if not (reposchema.has_entity(rdef.subject)
                         and reposchema.has_entity(rdef.object)):
                     continue
+                # symmetric relations appears twice
+                if (rdef.subject, rdef.object) in done:
+                    continue
+                done.add( (rdef.subject, rdef.object) )
                 self._set_rdef_eid(rdef)
                 ss.execschemarql(execute, rdef,
                                  ss.rdef2rql(rdef, cmap, gmap))