com.google.gwt.dev.util.collect

Class IdentityHashMap<K,V>

java.lang.Object

com.google.gwt.dev.util.collect.HashMap<K,V>

com.google.gwt.dev.util.collect.IdentityHashMap<K,V>

Type Parameters:

K - the key type

V - the value type

All Implemented Interfaces:

Serializable, Map<K,V>

public class IdentityHashMap<K,V>
extends HashMap<K,V>

A memory-efficient identity hash map.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
IdentityHashMap()
IdentityHashMap(Map<? extends K,? extends V> m)

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	keyEquals(Object a, Object b) Returns whether two keys are equal for the purposes of this set.
protected int	keyHashCode(Object k) Returns the hashCode for a key.
protected boolean	valueEquals(Object a, Object b) Returns whether two values are equal for the purposes of this set.
protected int	valueHashCode(Object k) Returns the hashCode for a value.

Methods inherited from class com.google.gwt.dev.util.collect.HashMap

clear, containsKey, containsValue, doReadObject, doWriteObject, entrySet, equals, get, hashCode, isEmpty, keySet, put, putAll, remove, size, toString, values

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

IdentityHashMap

public IdentityHashMap()

IdentityHashMap

public IdentityHashMap(Map<? extends K,? extends V> m)

Method Detail

keyEquals

protected boolean keyEquals(Object a,
                Object b)

Description copied from class: HashMap

Returns whether two keys are equal for the purposes of this set.

Overrides:

keyEquals in class HashMap<K,V>

keyHashCode

protected int keyHashCode(Object k)

Description copied from class: HashMap

Returns the hashCode for a key.

Overrides:

keyHashCode in class HashMap<K,V>

valueEquals

protected boolean valueEquals(Object a,
                  Object b)

Description copied from class: HashMap

Returns whether two values are equal for the purposes of this set.

Overrides:

valueEquals in class HashMap<K,V>

valueHashCode

protected int valueHashCode(Object k)

Description copied from class: HashMap

Returns the hashCode for a value.

Overrides:

valueHashCode in class HashMap<K,V>