1 /*
2 * Licensed to the Apache Software Foundation (ASF) under one
3 * or more contributor license agreements. See the NOTICE file
4 * distributed with this work for additional information
5 * regarding copyright ownership. The ASF licenses this file
6 * to you under the Apache License, Version 2.0 (the
7 * "License"); you may not use this file except in compliance
8 * with the License. You may obtain a copy of the License at
9 *
10 * http://www.apache.org/licenses/LICENSE-2.0
11 *
12 * Unless required by applicable law or agreed to in writing,
13 * software distributed under the License is distributed on an
14 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
15 * KIND, either express or implied. See the License for the
16 * specific language governing permissions and limitations
17 * under the License.
18 */
19 package org.apache.myfaces.webapp.filter.servlet;
20
21 import org.apache.myfaces.shared_tomahawk.util.NullEnumeration;
22
23 import javax.servlet.http.HttpServletRequest;
24 import javax.servlet.http.HttpSession;
25 import java.util.Enumeration;
26 import java.util.Map;
27
28
29 /**
30 * HttpSession attibutes as Map.
31 * <p>
32 * NOTE: This class was copied from myfaces impl
33 * org.apache.myfaces.context.servlet and it is
34 * used by TomahawkFacesContextWrapper. By that reason, it could change
35 * in the future.
36 * </p>
37 *
38 * @since 1.1.7
39 * @author Anton Koinov (latest modification by $Author: lu4242 $)
40 * @version $Revision: 691871 $ $Date: 2008-09-03 23:32:08 -0500 (Wed, 03 Sep 2008) $
41 */
42 public class SessionMap extends AbstractAttributeMap
43 {
44 private final HttpServletRequest _httpRequest;
45
46 SessionMap(HttpServletRequest httpRequest)
47 {
48 _httpRequest = httpRequest;
49 }
50
51 protected Object getAttribute(String key)
52 {
53 HttpSession httpSession = getSession();
54 return (httpSession == null)
55 ? null : httpSession.getAttribute(key.toString());
56 }
57
58 protected void setAttribute(String key, Object value)
59 {
60 _httpRequest.getSession(true).setAttribute(key, value);
61 }
62
63 protected void removeAttribute(String key)
64 {
65 HttpSession httpSession = getSession();
66 if (httpSession != null)
67 {
68 httpSession.removeAttribute(key);
69 }
70 }
71
72 protected Enumeration getAttributeNames()
73 {
74 HttpSession httpSession = getSession();
75 return (httpSession == null)
76 ? NullEnumeration.instance()
77 : httpSession.getAttributeNames();
78 }
79
80 private HttpSession getSession()
81 {
82 return _httpRequest.getSession(false);
83 }
84
85
86 public void putAll(Map t)
87 {
88 throw new UnsupportedOperationException();
89 }
90
91
92 public void clear()
93 {
94 throw new UnsupportedOperationException();
95 }
96 }