'message_property_not_set' for Property Existence Constraint is

deprecated since r41787. In order to keep backward-compatibility, skip
this attribute when migrating from filesystem to ZODB Property Sheets


git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@43283 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5Type/Core/PropertyExistenceConstraint.py

@@ -88,6 +88,17 @@ class PropertyExistenceConstraint(ConstraintMixin):
 
   _message_id_tuple = ('message_no_such_property',)
 
+  @staticmethod
+  def _preConvertBaseFromFilesystemDefinition(filesystem_definition_dict):
+    """
+    Remove 'message_property_not_set' which used to be defined in
+    filesystem Property Existence constraint but were useless, so
+    remove it before converting the constraint for backward
+    compatibility
+    """
+    filesystem_definition_dict.pop('message_property_not_set', None)
+    return {}
+
   @staticmethod
   def _convertFromFilesystemDefinition(**property_dict):
     """