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 protected final Map<String,Object> _map;
31
32 /* ------------------------------------------------------------ */
33 public AttributesMap()
34 {
35 _map=new HashMap<String,Object>();
36 }
37
38 /* ------------------------------------------------------------ */
39 public AttributesMap(Map<String,Object> map)
40 {
41 _map=map;
42 }
43
44 /* ------------------------------------------------------------ */
45 public AttributesMap(AttributesMap map)
46 {
47 _map=new HashMap<String,Object>(map._map);
48 }
49
50 /* ------------------------------------------------------------ */
51 /*
52 * @see org.eclipse.jetty.util.Attributes#removeAttribute(java.lang.String)
53 */
54 public void removeAttribute(String name)
55 {
56 _map.remove(name);
57 }
58
59 /* ------------------------------------------------------------ */
60 /*
61 * @see org.eclipse.jetty.util.Attributes#setAttribute(java.lang.String, java.lang.Object)
62 */
63 public void setAttribute(String name, Object attribute)
64 {
65 if (attribute==null)
66 _map.remove(name);
67 else
68 _map.put(name, attribute);
69 }
70
71 /* ------------------------------------------------------------ */
72 /*
73 * @see org.eclipse.jetty.util.Attributes#getAttribute(java.lang.String)
74 */
75 public Object getAttribute(String name)
76 {
77 return _map.get(name);
78 }
79
80 /* ------------------------------------------------------------ */
81 /*
82 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
83 */
84 public Enumeration<String> getAttributeNames()
85 {
86 return Collections.enumeration(_map.keySet());
87 }
88
89 /* ------------------------------------------------------------ */
90 /*
91 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
92 */
93 public Set<String> getAttributeNameSet()
94 {
95 return _map.keySet();
96 }
97
98 /* ------------------------------------------------------------ */
99 public Set<Map.Entry<String, Object>> getAttributeEntrySet()
100 {
101 return _map.entrySet();
102 }
103
104 /* ------------------------------------------------------------ */
105 /*
106 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
107 */
108 public static Enumeration<String> getAttributeNamesCopy(Attributes attrs)
109 {
110 if (attrs instanceof AttributesMap)
111 return Collections.enumeration(((AttributesMap)attrs)._map.keySet());
112 ArrayList names = new ArrayList();
113 Enumeration e = attrs.getAttributeNames();
114 while (e.hasMoreElements())
115 names.add(e.nextElement());
116 return Collections.enumeration(names);
117 }
118
119 /* ------------------------------------------------------------ */
120 /*
121 * @see org.eclipse.jetty.util.Attributes#clear()
122 */
123 public void clearAttributes()
124 {
125 _map.clear();
126 }
127
128 /* ------------------------------------------------------------ */
129 public int size()
130 {
131 return _map.size();
132 }
133
134 /* ------------------------------------------------------------ */
135 @Override
136 public String toString()
137 {
138 return _map.toString();
139 }
140
141 /* ------------------------------------------------------------ */
142 public Set<String> keySet()
143 {
144 return _map.keySet();
145 }
146
147 /* ------------------------------------------------------------ */
148 public void addAll(Attributes attributes)
149 {
150 Enumeration<String> e = attributes.getAttributeNames();
151 while (e.hasMoreElements())
152 {
153 String name=e.nextElement();
154 setAttribute(name,attributes.getAttribute(name));
155 }
156 }
157
158 }