[Zope3-checkins] CVS: Zope3/lib/python/Zope/App/OFS/Services/CachingService - CachingService.py:1.1 __init__.py:1.1 configure.zcml:1.1

[Marius Gedminas]

Update of /cvs-repository/Zope3/lib/python/Zope/App/OFS/Services/CachingService
In directory cvs.zope.org:/tmp/cvs-serv31053

Added Files:
	CachingService.py __init__.py configure.zcml 
Log Message:
The beginning of a caching service

=== Added File Zope3/lib/python/Zope/App/OFS/Services/CachingService/CachingService.py ===
##############################################################################
#
# Copyright (c) 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.
# 
##############################################################################
"""Caching service.

$Id: CachingService.py,v 1.1 2002/10/03 11:56:33 mgedmin Exp $
"""
from types import TupleType

from Zope.App.ComponentArchitecture.NextService import queryNextService
from Zope.ContextWrapper import ContextMethod

from Zope.App.OFS.Container.IContainer import IHomogenousContainer, IContainer
from Zope.App.OFS.Container.BTreeContainer import BTreeContainer

from Zope.App.Caching.ICachingService import ICachingService
from Zope.App.Caching.ICache import ICache

class ILocalCachingService(ICachingService, IContainer,
                              IHomogenousContainer):
    """TTW manageable caching service"""


class CachingService(BTreeContainer):

    __implements__ =  ILocalCachingService

    ############################################################
    # Implementation methods for interface
    # Zope.App.OFS.Services.CachingService.ILocalCachingService

    ######################################
    # from: Zope.App.Caching.ICachingService.ICachingService

    def getCache(self, name):
        'See Zope.App.Caching.ICachingService.ICachingService'
        return self.__getitem__(name)

    def queryCache(self, name, default=None):
        'See Zope.App.Caching.ICachingService.ICachingService' 
        cache = self.get(name, default)
        if cache is not default:
            return cache
        return default

    def getAvailableCaches(self):
        'See Zope.App.Caching.ICachingService.ICachingService'
        caches = list(self.keys())
        service = queryNextService(self, "Caching")
        if service is not None:
            caches.append(service.getAvailableCaches())
        return caches

    getAvailableCaches = ContextMethod(getAvailableCaches)

    ######################################
    # from: Zope.App.OFS.Container.IContainer.IHomogenousContainer

    def isAddable(self, interfaces):
        'See Zope.App.OFS.Container.IContainer.IHomogenousContainer'
        if type(interfaces) != TupleType:
            interfaces = (interfaces,)
        if ICache in interfaces:
            return 1
        return 0

    #
    ############################################################


=== Added File Zope3/lib/python/Zope/App/OFS/Services/CachingService/__init__.py ===
##############################################################################
#
# 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.
# 
##############################################################################
"""Caching service.

$Id: __init__.py,v 1.1 2002/10/03 11:56:33 mgedmin Exp $
"""



=== Added File Zope3/lib/python/Zope/App/OFS/Services/CachingService/configure.zcml ===
<zopeConfigure
     xmlns='http://namespaces.zope.org/zope'>

  <content class=".CachingService.">
    <factory id="CachingService" permission="Zope.ManageServices" />
      <require
          permission="Zope.View"
          interface="Zope.App.Caching.ICachingService." />
      <require
          permission="Zope.ManageServices"
          interface="Zope.App.OFS.Container.IContainer." />
  </content>

  <include package=".Views" />

</zopeConfigure>