# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1515781238 -3600
# Node ID 4c64472f46b28af94cc87d5d3e3efe394358903f
# Parent  564a684025ff99a1ed0adebdc1c4204642c329a2
Handle missing stored objects referenced by incoming REFRESH messages.

diff -r 564a684025ff -r 4c64472f46b2 imiptools/handlers/person.py
--- a/imiptools/handlers/person.py	Fri Jan 12 19:11:13 2018 +0100
+++ b/imiptools/handlers/person.py	Fri Jan 12 19:20:38 2018 +0100
@@ -3,7 +3,7 @@
 """
 Handlers for a person for whom scheduling is performed.
 
-Copyright (C) 2014, 2015, 2016, 2017 Paul Boddie <paul@boddie.org.uk>
+Copyright (C) 2014, 2015, 2016, 2017, 2018 Paul Boddie <paul@boddie.org.uk>
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -247,9 +247,15 @@
         attendees.
         """
 
+        # Handle missing objects.
+
+        obj = self.get_stored_object_version()
+
+        if not obj:
+            return False
+
         # Filter by stored attendees.
 
-        obj = self.get_stored_object_version()
         stored_attendees = set(obj.get_values("ATTENDEE"))
         attendees = stored_attendees.intersection(attendees)