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.el.unified.resolver.implicitobject;
20
21 import java.beans.FeatureDescriptor;
22 import java.util.Map;
23 import javax.el.ELContext;
24
25 /**
26 * Encapsulates information needed by the ImplicitObjectResolver
27 *
28 * @author Stan Silvert
29 */
30 public class HeaderImplicitObject extends ImplicitObject
31 {
32
33 private static final String NAME = "header";
34
35 /** Creates a new instance of HeaderImplicitObject */
36 public HeaderImplicitObject()
37 {
38 }
39
40 @Override
41 public Object getValue(ELContext context)
42 {
43 return externalContext(context).getRequestHeaderMap();
44 }
45
46 @Override
47 public String getName()
48 {
49 return NAME;
50 }
51
52 @Override
53 public Class<?> getType()
54 {
55 return null;
56 }
57
58 @Override
59 public FeatureDescriptor getDescriptor()
60 {
61 return makeDescriptor(NAME, "Map whose keys are a set of request header names in the current request",
62 Map.class);
63 }
64
65 }