org.apache.river.collection

Class SoftCache<K,V>

java.lang.Object

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

Type Parameters:

K -

V -

public class SoftCache<K,V>
extends Object

Map of keys to softly-referenced values which automatically removes mappings for garbage-collected values. This is a simplified version of sun.misc.SoftCache.

Since:

2.0

Author:

Sun Microsystems, Inc.

Constructor Summary

Constructors

Constructor and Description
SoftCache()

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.

Methods inherited from class java.lang.Object

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

Constructor Detail

SoftCache

public SoftCache()

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:

clear

public void clear()

Removes all associations from this map.