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1   /* Copyright 2004 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.acegisecurity.acl.basic.cache;
17  
18  import org.acegisecurity.acl.basic.AclObjectIdentity;
19  import org.acegisecurity.acl.basic.BasicAclEntry;
20  import org.acegisecurity.acl.basic.BasicAclEntryCache;
21  
22  
23  /***
24   * Does not perform any caching.
25   * 
26   * <P>
27   * <B>Do not use in production settings</B>, as ACL queries are likely to be
28   * extensive.
29   * </p>
30   *
31   * @author Ben Alex
32   * @version $Id: NullAclEntryCache.java,v 1.2 2005/11/17 00:56:47 benalex Exp $
33   */
34  public class NullAclEntryCache implements BasicAclEntryCache {
35      //~ Methods ================================================================
36  
37      /***
38       * As nothing ever stored in the cache, will always return
39       * <code>null</code>.
40       *
41       * @param aclObjectIdentity ignored
42       *
43       * @return always <code>null</code>
44       */
45      public BasicAclEntry[] getEntriesFromCache(
46          AclObjectIdentity aclObjectIdentity) {
47          return null;
48      }
49  
50      /***
51       * Meets method signature but doesn't store in any cache.
52       *
53       * @param basicAclEntry ignored
54       */
55      public void putEntriesInCache(BasicAclEntry[] basicAclEntry) {}
56  }