1 /* Copyright (c) 2001-2014, 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;
35 
36 import org.hsqldb.map.BaseHashMap;
37 
38 /**
39  * @author Fred Toussi (fredt@users dot sourceforge.net)
40  * @version 1.9.0
41  * @since 1.7.2
42  */
43 public class IntKeyIntValueHashMap extends BaseHashMap {
44 
45     private Set        keySet;
46     private Collection values;
47 
IntKeyIntValueHashMap()48     public IntKeyIntValueHashMap() {
49         this(8);
50     }
51 
IntKeyIntValueHashMap(int initialCapacity)52     public IntKeyIntValueHashMap(int initialCapacity)
53     throws IllegalArgumentException {
54         super(initialCapacity, BaseHashMap.intKeyOrValue,
55               BaseHashMap.intKeyOrValue, false);
56     }
57 
get(int key)58     public int get(int key) throws NoSuchElementException {
59 
60         int lookup = getLookup(key);
61 
62         if (lookup != -1) {
63             return intValueTable[lookup];
64         }
65 
66         throw new NoSuchElementException();
67     }
68 
get(int key, int defaultValue)69     public int get(int key, int defaultValue) {
70 
71         int lookup = getLookup(key);
72 
73         if (lookup != -1) {
74             return intValueTable[lookup];
75         }
76 
77         return defaultValue;
78     }
79 
get(int key, int[] value)80     public boolean get(int key, int[] value) {
81 
82         int lookup = getLookup(key);
83 
84         if (lookup != -1) {
85             value[0] = intValueTable[lookup];
86 
87             return true;
88         }
89 
90         return false;
91     }
92 
put(int key, int value)93     public boolean put(int key, int value) {
94 
95         int oldSize = size();
96 
97         super.addOrRemove(key, value, null, null, false);
98 
99         return oldSize != size();
100     }
101 
remove(int key)102     public boolean remove(int key) {
103 
104         int oldSize = size();
105 
106         super.addOrRemove(key, 0, null, null, true);
107 
108         return oldSize != size();
109     }
110 
keySet()111     public Set keySet() {
112 
113         if (keySet == null) {
114             keySet = new KeySet();
115         }
116 
117         return keySet;
118     }
119 
values()120     public Collection values() {
121 
122         if (values == null) {
123             values = new Values();
124         }
125 
126         return values;
127     }
128 
129     class KeySet implements Set {
130 
iterator()131         public Iterator iterator() {
132             return IntKeyIntValueHashMap.this.new BaseHashIterator(true);
133         }
134 
size()135         public int size() {
136             return IntKeyIntValueHashMap.this.size();
137         }
138 
contains(Object o)139         public boolean contains(Object o) {
140             throw new UnsupportedOperationException();
141         }
142 
get(Object key)143         public Object get(Object key) {
144             throw new UnsupportedOperationException();
145         }
146 
add(Object value)147         public boolean add(Object value) {
148             throw new UnsupportedOperationException();
149         }
150 
addAll(Collection c)151         public boolean addAll(Collection c) {
152             throw new UnsupportedOperationException();
153         }
154 
remove(Object o)155         public boolean remove(Object o) {
156             throw new UnsupportedOperationException();
157         }
158 
isEmpty()159         public boolean isEmpty() {
160             return size() == 0;
161         }
162 
clear()163         public void clear() {
164             IntKeyIntValueHashMap.this.clear();
165         }
166     }
167 
168     class Values implements Collection {
169 
iterator()170         public Iterator iterator() {
171             return IntKeyIntValueHashMap.this.new BaseHashIterator(false);
172         }
173 
size()174         public int size() {
175             return IntKeyIntValueHashMap.this.size();
176         }
177 
contains(Object o)178         public boolean contains(Object o) {
179             throw new UnsupportedOperationException();
180         }
181 
add(Object value)182         public boolean add(Object value) {
183             throw new UnsupportedOperationException();
184         }
185 
addAll(Collection c)186         public boolean addAll(Collection c) {
187             throw new UnsupportedOperationException();
188         }
189 
remove(Object o)190         public boolean remove(Object o) {
191             throw new UnsupportedOperationException();
192         }
193 
isEmpty()194         public boolean isEmpty() {
195             return size() == 0;
196         }
197 
clear()198         public void clear() {
199             IntKeyIntValueHashMap.this.clear();
200         }
201     }
202 }
203