01: /*
02: * Licensed to the Apache Software Foundation (ASF) under one or more
03: * contributor license agreements. See the NOTICE file distributed with
04: * this work for additional information regarding copyright ownership.
05: * The ASF licenses this file to You under the Apache License, Version 2.0
06: * (the "License"); you may not use this file except in compliance with
07: * the License. You may obtain a copy of the License at
08: *
09: * http://www.apache.org/licenses/LICENSE-2.0
10: *
11: * Unless required by applicable law or agreed to in writing, software
12: * distributed under the License is distributed on an "AS IS" BASIS,
13: * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14: * See the License for the specific language governing permissions and
15: * limitations under the License.
16: */
17: package org.apache.cocoon.caching;
18:
19: /**
20: * A validation object which is always valid.
21: * This might be the most used CacheValidity object for serializers.
22: *
23: * @deprecated Use the Avalon Excalibur SourceValidity implementations instead
24: * @author <a href="mailto:cziegeler@apache.org">Carsten Ziegeler</a>
25: * @version CVS $Id: NOPCacheValidity.java 433543 2006-08-22 06:22:54Z crossley $
26: */
27: public final class NOPCacheValidity 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 toString() {
36: return "NOP Validity";
37: }
38: }
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