diff -r 76b3cd5d4f31 -r 01152fffd593 server/sources/ldapuser.py
--- a/server/sources/ldapuser.py	Mon Apr 06 12:37:45 2009 +0200
+++ b/server/sources/ldapuser.py	Tue Apr 07 09:30:23 2009 +0200
@@ -3,7 +3,7 @@
 this source is for now limited to a read-only EUser source
 
 :organization: Logilab
-:copyright: 2003-2008 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
+:copyright: 2003-2009 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
 :contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
 
 
@@ -20,8 +20,6 @@
 FOR A PARTICULAR PURPOSE.
 """
 
-from datetime import datetime, timedelta
-
 from logilab.common.textutils import get_csv
 from rql.nodes import Relation, VariableRef, Constant, Function
 
@@ -30,9 +28,10 @@
 from ldap.filter import filter_format, escape_filter_chars
 from ldapurl import LDAPUrl
 
-from cubicweb.common import AuthenticationError, UnknownEid, RepositoryError
-from cubicweb.server.sources import AbstractSource, TrFunc, GlobTrFunc, ConnectionWrapper
+from cubicweb import AuthenticationError, UnknownEid, RepositoryError
 from cubicweb.server.utils import cartesian_product
+from cubicweb.server.sources import (AbstractSource, TrFunc, GlobTrFunc,
+                                     ConnectionWrapper, TimedCache)
 
 # search scopes
 BASE = ldap.SCOPE_BASE
@@ -50,24 +49,7 @@
     2: (0,   'ldapi'),
     }
 
-class TimedCache(dict):
-    def __init__(self, ttlm, ttls=0):
-        # time to live in minutes
-        self.ttl = timedelta(0, ttlm*60 + ttls, 0)
-        
-    def __setitem__(self, key, value):
-        dict.__setitem__(self, key, (datetime.now(), value))
-        
-    def __getitem__(self, key):
-        return dict.__getitem__(self, key)[1]
-    
-    def clear_expired(self):
-        now_ = datetime.now()
-        ttl = self.ttl
-        for key, (timestamp, value) in self.items():
-            if now_ - timestamp > ttl:
-                del self[key]
-                
+
 class LDAPUserSource(AbstractSource):
     """LDAP read-only EUser source"""
     support_entities = {'EUser': False}