diff -r d3668ecd9137 -r 738abc5935c9 ztfy/utils/zodb.py
--- a/ztfy/utils/zodb.py	Wed Jun 20 16:29:53 2012 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,46 +0,0 @@
-### -*- coding: utf-8 -*- ####################################################
-##############################################################################
-#
-# Copyright (c) 2008-2012 Thierry Florac <tflorac AT ulthar.net>
-# All Rights Reserved.
-#
-# This software is subject to the provisions of the Zope Public License,
-# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
-# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
-# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
-# FOR A PARTICULAR PURPOSE.
-#
-##############################################################################
-
-__docformat__ = "restructuredtext"
-
-# import standard packages
-
-# import Zope3 interfaces
-from persistent.interfaces import IPersistent
-from transaction.interfaces import ITransactionManager
-from ZODB.interfaces import IConnection
-
-# import local interfaces
-
-# import Zope3 packages
-from zope.component import adapter
-from zope.interface import implementer
-
-# import local packages
-
-
-# IPersistent adapters copied from zc.twist package
-# also register this for adapting from IConnection
-@adapter(IPersistent)
-@implementer(ITransactionManager)
-def transactionManager(obj):
-    conn = IConnection(obj) # typically this will be
-                            # zope.app.keyreference.persistent.connectionOfPersistent
-    try:
-        return conn.transaction_manager
-    except AttributeError:
-        return conn._txn_mgr
-        # or else we give up; who knows.  transaction_manager is the more
-        # recent spelling.