1 // ========================================================================
2 // Copyright (c) 2004-2009 Mort Bay Consulting Pty. Ltd.
3 // ------------------------------------------------------------------------
4 // All rights reserved. This program and the accompanying materials
5 // are made available under the terms of the Eclipse Public License v1.0
6 // and Apache License v2.0 which accompanies this distribution.
7 // The Eclipse Public License is available at
8 // http://www.eclipse.org/legal/epl-v10.html
9 // The Apache License v2.0 is available at
10 // http://www.opensource.org/licenses/apache2.0.php
11 // You may elect to redistribute this code under either of these licenses.
12 // ========================================================================
13
14 package org.eclipse.jetty.util;
15
16 import java.util.ArrayList;
17 import java.util.Collections;
18 import java.util.Enumeration;
19 import java.util.HashMap;
20 import java.util.Map;
21 import java.util.Set;
22
23 /* ------------------------------------------------------------ */
24 /** AttributesMap.
25 *
26 *
27 */
28 public class AttributesMap implements Attributes
29 {
30 Map _map;
31
32 /* ------------------------------------------------------------ */
33 public AttributesMap()
34 {
35 _map=new HashMap();
36 }
37
38 /* ------------------------------------------------------------ */
39 public AttributesMap(Map map)
40 {
41 _map=map;
42 }
43
44 public AttributesMap(AttributesMap map)
45 {
46 _map=new HashMap(map._map);
47 }
48
49 /* ------------------------------------------------------------ */
50 /*
51 * @see org.eclipse.jetty.util.Attributes#removeAttribute(java.lang.String)
52 */
53 public void removeAttribute(String name)
54 {
55 _map.remove(name);
56 }
57
58 /* ------------------------------------------------------------ */
59 /*
60 * @see org.eclipse.jetty.util.Attributes#setAttribute(java.lang.String, java.lang.Object)
61 */
62 public void setAttribute(String name, Object attribute)
63 {
64 if (attribute==null)
65 _map.remove(name);
66 else
67 _map.put(name, attribute);
68 }
69
70 /* ------------------------------------------------------------ */
71 /*
72 * @see org.eclipse.jetty.util.Attributes#getAttribute(java.lang.String)
73 */
74 public Object getAttribute(String name)
75 {
76 return _map.get(name);
77 }
78
79 /* ------------------------------------------------------------ */
80 /*
81 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
82 */
83 public Enumeration getAttributeNames()
84 {
85 return Collections.enumeration(_map.keySet());
86 }
87
88 /* ------------------------------------------------------------ */
89 /*
90 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
91 */
92 public static Enumeration getAttributeNamesCopy(Attributes attrs)
93 {
94 if (attrs instanceof AttributesMap)
95 return Collections.enumeration(((AttributesMap)attrs)._map.keySet());
96 ArrayList names = new ArrayList();
97 Enumeration e = attrs.getAttributeNames();
98 while (e.hasMoreElements())
99 names.add(e.nextElement());
100 return Collections.enumeration(names);
101 }
102
103 /* ------------------------------------------------------------ */
104 /*
105 * @see org.eclipse.jetty.util.Attributes#clear()
106 */
107 public void clearAttributes()
108 {
109 _map.clear();
110 }
111
112 /* ------------------------------------------------------------ */
113 public String toString()
114 {
115 return _map.toString();
116 }
117
118 /* ------------------------------------------------------------ */
119 public Set<String> keySet()
120 {
121 return _map.keySet();
122 }
123
124 }