01: /*
02: * Copyright 2004, 2005, 2006 Odysseus Software GmbH
03: *
04: * Licensed under the Apache License, Version 2.0 (the "License");
05: * you may not use this file except in compliance with the License.
06: * You may obtain a copy of the License at
07: *
08: * http://www.apache.org/licenses/LICENSE-2.0
09: *
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 de.odysseus.calyxo.base.access;
17:
18: import javax.servlet.http.HttpServletRequest;
19:
20: /**
21: * This accessor simply answers an object provided at construction time.
22: *
23: * @author Christoph Beck
24: */
25: public class ConstantAccessor implements Accessor {
26: private final Object value;
27:
28: /**
29: * Constructor.
30: * @param value the value to answer in <code>@link #get(HttpServletRequest)</code>
31: */
32: public ConstantAccessor(Object value) {
33: super ();
34:
35: this .value = value;
36: }
37:
38: /**
39: * Answer our value.
40: */
41: public final Object get(HttpServletRequest request) {
42: return value;
43: }
44:
45: /**
46: * Yes, we are cachable.
47: */
48: public final boolean isCacheable() {
49: return true;
50: }
51:
52: }
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