From 4634dd6f8ef17098086b7769665566eb566abb5b Mon Sep 17 00:00:00 2001
From: Ronald Portier <ronald@therp.nl>
Date: Wed, 24 Apr 2013 16:29:58 +0200
Subject: [PATCH] [FIX] Add __iter__ method to browse_null to prevent server
 hang.

lp bug: https://launchpad.net/bugs/1172292 fixed

bzr revid: ronald@therp.nl-20130424142958-u5r2mxtxqj9v431h
---
 openerp/osv/orm.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/openerp/osv/orm.py b/openerp/osv/orm.py
index 870efd3dd8b..b9be7d79453 100644
--- a/openerp/osv/orm.py
+++ b/openerp/osv/orm.py
@@ -285,6 +285,9 @@ class browse_null(object):
     def __unicode__(self):
         return u''
 
+    def __iter__(self):
+        raise NotImplementedError("Iteration is not allowed on %s" % self)
+
 
 #
 # TODO: execute an object method on browse_record_list