1//
2//  ========================================================================
3//  Copyright (c) 1995-2014 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
19package org.eclipse.jetty.util;
20
21import java.util.ArrayList;
22import java.util.Collections;
23import java.util.Enumeration;
24import java.util.HashMap;
25import java.util.List;
26import java.util.Map;
27import java.util.Set;
28
29/* ------------------------------------------------------------ */
30/** AttributesMap.
31 *
32 *
33 */
34public 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}
164