1 /* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
2 *
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 package org.springframework.security.providers.dao.cache;
17
18 import org.springframework.security.providers.dao.UserCache;
19
20 import org.springframework.security.userdetails.UserDetails;
21
22
23 /**
24 * Does not perform any caching.
25 *
26 * @author Ben Alex
27 * @version $Id: NullUserCache.java 2217 2007-10-27 00:45:30Z luke_t $
28 */
29 public class NullUserCache implements UserCache {
30 //~ Methods ========================================================================================================
31
32 public UserDetails getUserFromCache(String username) {
33 return null;
34 }
35
36 public void putUserInCache(UserDetails user) {}
37
38 public void removeUserFromCache(String username) {}
39 }