Make SQLCatalog an ActiveObject, yet in a way which does not require to depend on CMFActivity.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@33422 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ZSQLCatalog/SQLCatalog.py

+# -*- coding: utf-8 -*-
 ##############################################################################
 #
 # Copyright (c) 2002-2009 Nexedi SARL. All Rights Reserved.
@@ -53,6 +54,13 @@ from zope.interface import implements
 
 from SearchText import isAdvancedSearchText
 
+# Try to import ActiveObject in order to make SQLCatalog active
+try:
+  from Products.CMFActivity.ActiveObject import ActiveObject
+except ImportError:
+  ActiveObject = ExtensionClass.Base 
+
+
 PROFILING_ENABLED = False
 if PROFILING_ENABLED:
   from tiny_profiler import profiler_decorator, profiler_report, profiler_reset
@@ -233,7 +241,7 @@ related_key_warned_column_set = set()
 class Catalog(Folder,
               Persistent,
               Acquisition.Implicit,
-              ExtensionClass.Base,
+              ActiveObject,
               OFS.History.Historical):
   """ An Object Catalog