root/cpsskins/branches/paris-sprint-2006/caching.py

##############################################################################
#
# Copyright (c) 2005-2006 Nuxeo and Contributors.
# 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.
#
##############################################################################
"""

$Id$
"""
__docformat__ = "reStructuredText"

from zope.app.cache.interfaces.ram import IRAMCache
from zope.app.cache.ram import RAMCache
from zope.component.factory import Factory
from zope.interface import implements

cache = RAMCache()
IMAGE_CACHE_ID = 'images'

class IImageCache(IRAMCache):

    def get(key, default):
        """ """

    def __setitem__(key, value):
        """ """

class ImageCache(RAMCache):

    implements(IImageCache)

    def get(self, key, default=None):
        return cache.query(IMAGE_CACHE_ID, {'key': key}, default)

    def __setitem__(self, key, value):
        cache.set(value, IMAGE_CACHE_ID, {'key': key})

ImageCacheFactory = Factory(ImageCache)