01: /*
02: * Copyright 2004 The Apache Software Foundation.
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 org.apache.myfaces.context.servlet;
17:
18: import java.util.Enumeration;
19: import java.util.Map;
20:
21: import javax.servlet.http.HttpServletRequest;
22:
23: import org.apache.myfaces.util.AbstractAttributeMap;
24:
25: /**
26: * HttpServletRequest headers as Map.
27: *
28: * @author Anton Koinov (latest modification by $Author: mbr $)
29: * @version $Revision: 512417 $ $Date: 2007-02-27 22:22:36 +0100 (Di, 27 Feb 2007) $
30: */
31: public class RequestHeaderMap extends AbstractAttributeMap<String> {
32: private final HttpServletRequest _httpServletRequest;
33:
34: RequestHeaderMap(HttpServletRequest httpServletRequest) {
35: _httpServletRequest = httpServletRequest;
36: }
37:
38: @Override
39: protected String getAttribute(String key) {
40: return _httpServletRequest.getHeader(key);
41: }
42:
43: @Override
44: protected void setAttribute(String key, String value) {
45: throw new UnsupportedOperationException(
46: "Cannot set HttpServletRequest Header");
47: }
48:
49: @Override
50: protected void removeAttribute(String key) {
51: throw new UnsupportedOperationException(
52: "Cannot remove HttpServletRequest Header");
53: }
54:
55: @Override
56: @SuppressWarnings("unchecked")
57: protected Enumeration<String> getAttributeNames() {
58: return _httpServletRequest.getHeaderNames();
59: }
60:
61: @Override
62: public void putAll(Map t) {
63: throw new UnsupportedOperationException();
64: }
65:
66: @Override
67: public void clear() {
68: throw new UnsupportedOperationException();
69: }
70: }
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