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Java > Open Source Codes > org > apache > cocoon > caching > NOPCacheValidity


1 /*
2  * Copyright 1999-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 package org.apache.cocoon.caching;
17
18 /**
19  * A validation object which is always valid.
20  * This might be the most used CacheValidity object for serializers.
21  *
22  * @deprecated Use the Avalon Excalibur SourceValidity implementations instead
23  * @author <a HREF="mailto:cziegeler@apache.org">Carsten Ziegeler</a>
24  * @version CVS $Id: NOPCacheValidity.java 30932 2004-07-29 17:35:38Z vgritsenko $
25  */
26 public final class NOPCacheValidity
27 implements CacheValidity {
28
29     public static final CacheValidity CACHE_VALIDITY = new NOPCacheValidity();
30
31     public boolean isValid(CacheValidity validity) {
32         return validity instanceof NOPCacheValidity;
33     }
34
35     public String JavaDoc toString() {
36         return "NOP Validity";
37     }
38 }
39
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