1 /*
2 * Copyright (C) 2004 TiongHiang Lee
3 *
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2.1 of the License, or (at your option) any later version.
8 *
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
13 *
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free Software
16 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 *
18 * Email: thlee@onemindsoft.org
19 */
20
21 package org.onemind.commons.java.datastructure;
22
23 import java.util.Map;
24 /***
25 * A simple Map.Entry implementation that can be used for Map extension
26 * @author TiongHiang Lee (thlee@onemindsoft.org)
27 * @version $Id: MapEntry.java,v 1.3 2005/04/26 17:41:48 thlee Exp $ $Name: $
28 */
29 public class MapEntry implements Map.Entry
30 {
31
32 /*** the key * */
33 private Object _key;
34
35 /*** the value * */
36 private Object _value;
37
38 /***
39 * {@inheritDoc}
40 */
41 public MapEntry(Object key, Object value)
42 {
43 _key = key;
44 _value = value;
45 }
46
47 /***
48 * {@inheritDoc}
49 */
50 public Object getKey()
51 {
52 return _key;
53 }
54
55 /***
56 * {@inheritDoc}
57 */
58 public Object getValue()
59 {
60 return _value;
61 }
62
63 /***
64 * {@inheritDoc}
65 */
66 public Object setValue(Object value)
67 {
68 Object o = _value;
69 _value = value;
70 return o;
71 }
72
73 /***
74 * {@inheritDoc}
75 */
76 public int hashCode()
77 {
78 return _key.hashCode();
79 }
80
81 /***
82 * {@inheritDoc}
83 */
84 public boolean equals(Object o)
85 {
86 return _key.equals(((MapEntry) o)._key);
87 }
88 }