make internal cache implementation available for testing even when lovely.memcached is present

git-svn-id: svn://svn.cy55.de/Zope3/src/cybertools/trunk@3784 fd906abe-77d9-0310-91a1-e0d9ade77398

util/cache.py

@@ -1,5 +1,5 @@
 #
-#  Copyright (c) 2009 Helmut Merz helmutm@cy55.de
+#  Copyright (c) 2010 Helmut Merz helmutm@cy55.de
 #
 #  This program is free software; you can redistribute it and/or modify
 #  it under the terms of the GNU General Public License as published by
@@ -63,7 +63,7 @@ class CacheItem(object):
             self.value = INVALID
 
 
-def cache(getIdentifier, lifetime=3600):
+def internalCache(getIdentifier, lifetime=3600):
     def _cache(fct):
         def __cache(*args, **kw):
             id = getIdentifier(*args, **kw)
@@ -76,6 +76,8 @@ def cache(getIdentifier, lifetime=3600):
         return __cache
     return _cache
 
+cache = internalCache
+
 
 # memcached implementation
 

util/cache.txt

@@ -4,7 +4,8 @@ Data Caching
 
 $Id$
 
-  >>> from cybertools.util.cache import cache
+  >>> from cybertools.util import cache
+  >>> cache = cache.internalCache
 
   >>> @cache(lambda *args: 'calc')
   ... def calculate():