LongKeyIntValueHashMap.java
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package org.hsqldb.lib;
import java.util.NoSuchElementException;
import org.hsqldb.map.BaseHashMap;
/**
* A Map of long primitives to int primitives.
*
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @version 2.7.3
* @since 1.7.2
*/
public class LongKeyIntValueHashMap extends BaseHashMap
implements Map<Long, Integer> {
private Set<Long> keySet;
private Collection<Integer> values;
private Set<Entry<Long, Integer>> entries;
public LongKeyIntValueHashMap() {
this(8);
}
public LongKeyIntValueHashMap(boolean minimize) {
this(8);
minimizeOnEmpty = minimize;
}
public LongKeyIntValueHashMap(
int initialCapacity)
throws IllegalArgumentException {
super(
initialCapacity,
BaseHashMap.longKeyOrValue,
BaseHashMap.intKeyOrValue,
false);
}
public boolean containsKey(Object key) {
if (key instanceof Long) {
long longKey = ((Long) key).longValue();
return super.containsLongKey(longKey);
}
if (key == null) {
throw new NullPointerException();
}
return false;
}
public boolean containsKey(long key) {
return super.containsLongKey(key);
}
public boolean containsValue(Object value) {
if (value instanceof Integer) {
int intValue = ((Integer) value).intValue();
return super.containsValue(intValue);
}
if (value == null) {
throw new NullPointerException();
}
return false;
}
public boolean containsValue(int value) {
return super.containsValue(value);
}
public Integer get(Long key) {
if (key == null) {
throw new NullPointerException();
}
long longKey = key.longValue();
int lookup = getLookup(longKey);
if (lookup != -1) {
int intValue = intValueTable[lookup];
return Integer.valueOf(intValue);
}
return null;
}
public int get(long key) throws NoSuchElementException {
int lookup = getLookup(key);
if (lookup != -1) {
return intValueTable[lookup];
}
throw new NoSuchElementException();
}
public int get(long key, int defaultValue) {
int lookup = getLookup(key);
if (lookup != -1) {
return intValueTable[lookup];
}
return defaultValue;
}
public boolean get(long key, int[] value) {
int lookup = getLookup(key);
if (lookup != -1) {
value[0] = intValueTable[lookup];
return true;
}
return false;
}
public int getLookup(long key) {
return super.getLookup(key);
}
public Integer put(Long key, Integer value) {
if (key == null || value == null) {
throw new NullPointerException();
}
int oldSize = size();
super.addOrUpdate(key, value, null, null);
if (oldSize == size()) {
return null;
} else {
return value;
}
}
public boolean put(long key, int value) {
int oldSize = size();
super.addOrUpdate(key, value, null, null);
return oldSize != size();
}
public Integer remove(Object key) {
if (key instanceof Long) {
long longKey = ((Long) key).longValue();
return (Integer) super.remove(longKey, 0, null, null, false, false);
}
if (key == null) {
throw new NullPointerException();
}
return null;
}
public boolean remove(long key) {
Integer value = (Integer) super.remove(
key,
0,
null,
null,
false,
false);
return value != null;
}
public void putAll(LongKeyIntValueHashMap other) {
Iterator<Long> it = other.keySet().iterator();
while (it.hasNext()) {
long key = it.nextLong();
int value = other.get(key);
put(key, value);
}
}
public long[] keysToArray(long[] array) {
return toLongArray(array, true);
}
public int[] valuesToArray(int[] array) {
return toIntArray(array, false);
}
public Set<Long> keySet() {
if (keySet == null) {
keySet = new KeySet();
}
return keySet;
}
public Collection<Integer> values() {
if (values == null) {
values = new Values();
}
return values;
}
public Set<Entry<Long, Integer>> entrySet() {
if (entries == null) {
entries = new EntrySet();
}
return entries;
}
private class EntrySet
extends AbstractReadOnlyCollection<Entry<Long, Integer>>
implements Set<Entry<Long, Integer>> {
public Iterator<Entry<Long, Integer>> iterator() {
return LongKeyIntValueHashMap.this.new EntrySetIterator();
}
public int size() {
return LongKeyIntValueHashMap.this.size();
}
public boolean isEmpty() {
return size() == 0;
}
}
private class EntrySetIterator extends BaseHashIterator {
EntrySetIterator() {
super(true);
}
public Entry<Long, Integer> next() {
Long key = super.nextLong();
Integer value = intValueTable[lookup];
return new MapEntry<Long, Integer>(key, value);
}
}
private class KeySet extends AbstractReadOnlyCollection<Long>
implements Set<Long> {
public PrimitiveIterator<Long> iterator() {
return LongKeyIntValueHashMap.this.new BaseHashIterator(true);
}
public int size() {
return LongKeyIntValueHashMap.this.size();
}
public boolean isEmpty() {
return size() == 0;
}
}
private class Values extends AbstractReadOnlyCollection<Integer> {
public PrimitiveIterator<Integer> iterator() {
return LongKeyIntValueHashMap.this.new BaseHashIterator(false);
}
public int size() {
return LongKeyIntValueHashMap.this.size();
}
public boolean isEmpty() {
return size() == 0;
}
}
}