org.apache.river.collection

Class WeakIdentityMap<K,V>

java.lang.Object

org.apache.river.collection.WeakIdentityMap<K,V>

public class WeakIdentityMap<K,V>
extends Object

Identity-based weak hash map.

Since:

2.0

Author:

Sun Microsystems, Inc.

Constructor Summary

Constructors

Constructor and Description
WeakIdentityMap()

Method Summary

Modifier and Type	Method and Description
void	clear() Removes all associations from this map.
V	get(Object key) Returns value associated with given key, or null if none.
V	put(K key, V value) Associates value with given key, returning value previously associated with key, or null if none.
V	remove(Object key) Removes association for given key, returning value previously associated with key, or null if none.
Collection<V>	values() Returns collection containing all values currently held in this map.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

WeakIdentityMap

public WeakIdentityMap()

Method Detail

put

public V put(K key,
             V value)

Associates value with given key, returning value previously associated with key, or null if none.

Parameters:

key -

value -

Returns:

get

public V get(Object key)

Returns value associated with given key, or null if none.

Parameters:

key -

Returns:

remove

public V remove(Object key)

Removes association for given key, returning value previously associated with key, or null if none.

Parameters:

key -

Returns:

values

public Collection<V> values()

Returns collection containing all values currently held in this map.

Returns:

clear

public void clear()

Removes all associations from this map.