# HG changeset patch
# User Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
# Date 1226572529 -3600
# Node ID 9660bd221553fa11bb04b24c5bbb366d738a13f0
# Parent  c7c22b2103729f70ae37ece498aa9c5a385ff6c2
ECache should be a meta entity

diff -r c7c22b210372 -r 9660bd221553 schemas/base.py
--- a/schemas/base.py	Thu Nov 13 11:32:25 2008 +0100
+++ b/schemas/base.py	Thu Nov 13 11:35:29 2008 +0100
@@ -308,7 +308,15 @@
     """generic relation to link one entity to another"""
     symetric = True
 
-class ECache(EntityType):
+class ECache(MetaEntityType):
+    """a simple cache entity characterized by a name and
+    a validity date.
+
+    The target application is responsible for updating timestamp
+    when necessary to invalidate the cache (typically in hooks).
+
+    Also, checkout the AppRsetObject.get_cache() method.
+    """
     permissions = {
         'read':   ('managers', 'users', 'guests'),
         'add':    ('managers',),