[Zope3-checkins] CVS: Zope3/src/zope/app/services - interface.py:1.1

[Jeremy Hylton]

Update of /cvs-repository/Zope3/src/zope/app/services
In directory cvs.zope.org:/tmp/cvs-serv10274/zope/app/services

Added Files:
	interface.py 
Log Message:
Add support for persistent interfaces.


=== Added File Zope3/src/zope/app/services/interface.py ===
##############################################################################
#
# Copyright (c) 2003 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.
#
##############################################################################
"""Interfaces for persistent modules."""

from persistence import Persistent, PersistentMetaClass
from zodb.code.patch import registerWrapper, Wrapper
from zope.interface.interface import InterfaceClass

class PersistentInterfaceClass(Persistent, InterfaceClass):
    pass

PersistentInterface = PersistentInterfaceClass("PersistentInterface")

class PersistentInterfaceWrapper(Wrapper):

    def unwrap(self, bases, dict):
        pi = PersistentInterfaceClass(self._obj.__name__, bases, {})
        pi.__dict__.update(dict)
        return pi

registerWrapper(InterfaceClass, PersistentInterfaceWrapper,
                lambda iface: (iface.__bases__, iface.__dict__))