|
1
30
31
32 package org.hsqldb.lib;
33
34 import java.util.NoSuchElementException  ;
35
36 import org.hsqldb.store.BaseHashMap;
37
38
43 public class IntKeyIntValueHashMap extends BaseHashMap {
44
45 private Set keySet;
46 private Collection values;
47
48 public IntKeyIntValueHashMap() {
49 this(16, 0.75f);
50 }
51
52 public IntKeyIntValueHashMap(int initialCapacity)
53 throws IllegalArgumentException {
54 this(initialCapacity, 0.75f);
55 }
56
57 public IntKeyIntValueHashMap(int initialCapacity,
58 float loadFactor)
59 throws IllegalArgumentException {
60 super(initialCapacity, loadFactor, BaseHashMap.intKeyOrValue,
61 BaseHashMap.intKeyOrValue, false);
62 }
63
64 public int get(int key) throws NoSuchElementException {
65
66 int lookup = getLookup(key);
67
68 if (lookup != -1) {
69 return intValueTable[lookup];
70 }
71
72 throw new NoSuchElementException ();
73 }
74
75 public int get(int key, int defaultValue) {
76
77 int lookup = getLookup(key);
78
79 if (lookup != -1) {
80 return intValueTable[lookup];
81 }
82
83 return defaultValue;
84 }
85
86 public boolean get(int key, int[] value) {
87
88 int lookup = getLookup(key);
89
90 if (lookup != -1) {
91 value[0] = intValueTable[lookup];
92
93 return true;
94 }
95
96 return false;
97 }
98
99 public boolean put(int key, int value) {
100
101 int oldSize = size();
102
103 super.addOrRemove(key, value, null, null, false);
104
105 return oldSize != size();
106 }
107
108 public boolean remove(int key) {
109
110 int oldSize = size();
111
112 super.addOrRemove(key, 0, null, null, true);
113
114 return oldSize != size();
115 }
116
117 public Set keySet() {
118
119 if (keySet == null) {
120 keySet = new KeySet();
121 }
122
123 return keySet;
124 }
125
126 public Collection values() {
127
128 if (values == null) {
129 values = new Values();
130 }
131
132 return values;
133 }
134
135 class KeySet implements Set {
136
137 public Iterator iterator() {
138 return IntKeyIntValueHashMap.this.new BaseHashIterator(true);
139 }
140
141 public int size() {
142 return IntKeyIntValueHashMap.this.size();
143 }
144
145 public boolean contains(Object o) {
146 throw new RuntimeException ();
147 }
148
149 public Object get(Object key) {
150 throw new RuntimeException ();
151 }
152
153 public boolean add(Object value) {
154 throw new RuntimeException ();
155 }
156
157 public boolean addAll(Collection c) {
158 throw new RuntimeException ();
159 }
160
161 public boolean remove(Object o) {
162 throw new RuntimeException ();
163 }
164
165 public boolean isEmpty() {
166 return size() == 0;
167 }
168
169 public void clear() {
170 IntKeyIntValueHashMap.this.clear();
171 }
172 }
173
174 class Values implements Collection {
175
176 public Iterator iterator() {
177 return IntKeyIntValueHashMap.this.new BaseHashIterator(false);
178 }
179
180 public int size() {
181 return IntKeyIntValueHashMap.this.size();
182 }
183
184 public boolean contains(Object o) {
185 throw new RuntimeException ();
186 }
187
188 public boolean add(Object value) {
189 throw new RuntimeException ();
190 }
191
192 public boolean addAll(Collection c) {
193 throw new RuntimeException ();
194 }
195
196 public boolean remove(Object o) {
197 throw new RuntimeException ();
198 }
199
200 public boolean isEmpty() {
201 return size() == 0;
202 }
203
204 public void clear() {
205 IntKeyIntValueHashMap.this.clear();
206 }
207 }
208 }
209 |
Popular Tags |
Java API By Example, From Geeks To Geeks.