1 //
2 // ========================================================================
3 // Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
4 // ------------------------------------------------------------------------
5 // All rights reserved. This program and the accompanying materials
6 // are made available under the terms of the Eclipse Public License v1.0
7 // and Apache License v2.0 which accompanies this distribution.
8 //
9 // The Eclipse Public License is available at
10 // http://www.eclipse.org/legal/epl-v10.html
11 //
12 // The Apache License v2.0 is available at
13 // http://www.opensource.org/licenses/apache2.0.php
14 //
15 // You may elect to redistribute this code under either of these licenses.
16 // ========================================================================
17 //
18
19 package org.eclipse.jetty.util;
20
21 import java.util.ArrayList;
22 import java.util.Collections;
23 import java.util.Enumeration;
24 import java.util.HashMap;
25 import java.util.List;
26 import java.util.Map;
27 import java.util.Set;
28
29 /* ------------------------------------------------------------ */
30 /** AttributesMap.
31 *
32 *
33 */
34 public class AttributesMap implements Attributes
35 {
36 protected final Map<String,Object> _map;
37
38 /* ------------------------------------------------------------ */
39 public AttributesMap()
40 {
41 _map=new HashMap<String,Object>();
42 }
43
44 /* ------------------------------------------------------------ */
45 public AttributesMap(Map<String,Object> map)
46 {
47 _map=map;
48 }
49
50 /* ------------------------------------------------------------ */
51 public AttributesMap(AttributesMap map)
52 {
53 _map=new HashMap<String,Object>(map._map);
54 }
55
56 /* ------------------------------------------------------------ */
57 /*
58 * @see org.eclipse.jetty.util.Attributes#removeAttribute(java.lang.String)
59 */
60 public void removeAttribute(String name)
61 {
62 _map.remove(name);
63 }
64
65 /* ------------------------------------------------------------ */
66 /*
67 * @see org.eclipse.jetty.util.Attributes#setAttribute(java.lang.String, java.lang.Object)
68 */
69 public void setAttribute(String name, Object attribute)
70 {
71 if (attribute==null)
72 _map.remove(name);
73 else
74 _map.put(name, attribute);
75 }
76
77 /* ------------------------------------------------------------ */
78 /*
79 * @see org.eclipse.jetty.util.Attributes#getAttribute(java.lang.String)
80 */
81 public Object getAttribute(String name)
82 {
83 return _map.get(name);
84 }
85
86 /* ------------------------------------------------------------ */
87 /*
88 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
89 */
90 public Enumeration<String> getAttributeNames()
91 {
92 return Collections.enumeration(_map.keySet());
93 }
94
95 /* ------------------------------------------------------------ */
96 /*
97 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
98 */
99 public Set<String> getAttributeNameSet()
100 {
101 return _map.keySet();
102 }
103
104 /* ------------------------------------------------------------ */
105 public Set<Map.Entry<String, Object>> getAttributeEntrySet()
106 {
107 return _map.entrySet();
108 }
109
110 /* ------------------------------------------------------------ */
111 /*
112 * @see org.eclipse.jetty.util.Attributes#getAttributeNames()
113 */
114 public static Enumeration<String> getAttributeNamesCopy(Attributes attrs)
115 {
116 if (attrs instanceof AttributesMap)
117 return Collections.enumeration(((AttributesMap)attrs)._map.keySet());
118
119 List<String> names = new ArrayList<String>();
120 names.addAll(Collections.list(attrs.getAttributeNames()));
121 return Collections.enumeration(names);
122 }
123
124 /* ------------------------------------------------------------ */
125 /*
126 * @see org.eclipse.jetty.util.Attributes#clear()
127 */
128 public void clearAttributes()
129 {
130 _map.clear();
131 }
132
133 /* ------------------------------------------------------------ */
134 public int size()
135 {
136 return _map.size();
137 }
138
139 /* ------------------------------------------------------------ */
140 @Override
141 public String toString()
142 {
143 return _map.toString();
144 }
145
146 /* ------------------------------------------------------------ */
147 public Set<String> keySet()
148 {
149 return _map.keySet();
150 }
151
152 /* ------------------------------------------------------------ */
153 public void addAll(Attributes attributes)
154 {
155 Enumeration<String> e = attributes.getAttributeNames();
156 while (e.hasMoreElements())
157 {
158 String name=e.nextElement();
159 setAttribute(name,attributes.getAttribute(name));
160 }
161 }
162
163 }