##############################################################################
#
# Copyright (c) 2001, 2002 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (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
#
##############################################################################
"""Provide backward compatability with storages that have undoLog, but not undoInfo."""
class UndoLogCompatible:
def undoInfo(self, first=0, last=-20, specification=None):
if specification:
def filter(desc, spec=specification.items()):
get=desc.get
for k, v in spec:
if get(k, None) != v:
return 0
return 1
else: filter=None
return self.undoLog(first, last, filter)
|