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Java > Open Source Codes > org > hsqldb > lib > IntKeyLongValueHashMap


1 /* Copyright (c) 2001-2005, The HSQL Development Group
2  * All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions are met:
6  *
7  * Redistributions of source code must retain the above copyright notice, this
8  * list of conditions and the following disclaimer.
9  *
10  * Redistributions in binary form must reproduce the above copyright notice,
11  * this list of conditions and the following disclaimer in the documentation
12  * and/or other materials provided with the distribution.
13  *
14  * Neither the name of the HSQL Development Group nor the names of its
15  * contributors may be used to endorse or promote products derived from this
16  * software without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
19  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
22  * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
23  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
24  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
25  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
26  * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
28  * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29  */
30
31
32 package org.hsqldb.lib;
33
34 import java.util.NoSuchElementException JavaDoc;
35
36 import org.hsqldb.store.BaseHashMap;
37
38 /**
39  * @author fredt@users
40  * @version 1.7.2
41  * @since 1.7.2
42  */
43 public class IntKeyLongValueHashMap extends BaseHashMap {
44
45     public IntKeyLongValueHashMap() {
46         this(16, 0.75f);
47     }
48
49     public IntKeyLongValueHashMap(int initialCapacity)
50     throws IllegalArgumentException JavaDoc {
51         this(initialCapacity, 0.75f);
52     }
53
54     public IntKeyLongValueHashMap(int initialCapacity,
55                                   float loadFactor)
56                                   throws IllegalArgumentException JavaDoc {
57         super(initialCapacity, loadFactor, BaseHashMap.intKeyOrValue,
58               BaseHashMap.longKeyOrValue, false);
59     }
60
61     public long get(int key) throws NoSuchElementException JavaDoc {
62
63         int lookup = getLookup(key);
64
65         if (lookup != -1) {
66             return longValueTable[lookup];
67         }
68
69         throw new NoSuchElementException JavaDoc();
70     }
71
72     public long get(int key, int defaultValue) {
73
74         int lookup = getLookup(key);
75
76         if (lookup != -1) {
77             return longValueTable[lookup];
78         }
79
80         return defaultValue;
81     }
82
83     public boolean get(int key, long[] value) {
84
85         int lookup = getLookup(key);
86
87         if (lookup != -1) {
88             value[0] = longValueTable[lookup];
89
90             return true;
91         }
92
93         return false;
94     }
95
96     public boolean put(int key, int value) {
97
98         int oldSize = size();
99
100         super.addOrRemove(key, value, null, null, false);
101
102         return oldSize != size();
103     }
104
105     public boolean remove(int key) {
106
107         int oldSize = size();
108
109         super.addOrRemove(key, 0, null, null, true);
110
111         return oldSize != size();
112     }
113 }
114
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