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.List;
21 import java.util.Map;
22 import java.util.Set;
23
24 /* ------------------------------------------------------------ */
25 /** AttributesMap.
26 *
27 *
28 */
29 public class AttributesMap implements Attributes
30 {
31 protected final Map<String,Object> _map;
32
33 /* ------------------------------------------------------------ */
34 public AttributesMap()
35 {
36 _map=new HashMap<String,Object>();
37 }
38
39 /* ------------------------------------------------------------ */
40 public AttributesMap(Map<String,Object> map)
41 {
42 _map=map;
43 }
44
45 /* ------------------------------------------------------------ */
46 public AttributesMap(AttributesMap map)
47 {
48 _map=new HashMap<String,Object>(map._map);
49 }
50
51 /* ------------------------------------------------------------ */
52 /*
53 * @see org.eclipse.jetty.util.Attributes#removeAttribute(java.lang.String)
54 */
55 public void removeAttribute(String name)
56 {
57 _map.remove(name);
58 }
59
60 /* ------------------------------------------------------------ */
61 /*
62 * @see org.eclipse.jetty.util.Attributes#setAttribute(java.lang.String, java.lang.Object)
63 */
64 public void setAttribute(String name, Object attribute)
65 {
66 if (attribute==null)
67 _map.remove(name);
68 else
69 _map.put(name, attribute);
70 }
71
72 /* ------------------------------------------------------------ */
73 /*
74 * @see org.eclipse.jetty.util.Attributes#getAttribute(java.lang.String)
75 */
76 public Object getAttribute(String name)
77 {
78 return _map.get(name);
79 }
80
81 /* ------------------------------------------------------------ */
82 /*
83 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
84 */
85 public Enumeration<String> getAttributeNames()
86 {
87 return Collections.enumeration(_map.keySet());
88 }
89
90 /* ------------------------------------------------------------ */
91 /*
92 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
93 */
94 public Set<String> getAttributeNameSet()
95 {
96 return _map.keySet();
97 }
98
99 /* ------------------------------------------------------------ */
100 public Set<Map.Entry<String, Object>> getAttributeEntrySet()
101 {
102 return _map.entrySet();
103 }
104
105 /* ------------------------------------------------------------ */
106 /*
107 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
108 */
109 public static Enumeration<String> getAttributeNamesCopy(Attributes attrs)
110 {
111 if (attrs instanceof AttributesMap)
112 return Collections.enumeration(((AttributesMap)attrs)._map.keySet());
113
114 List<String> names = new ArrayList<String>();
115 names.addAll(Collections.list(attrs.getAttributeNames()));
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 }