com.googlecode.ehcache.annotations.impl
Class MultiKeyConcurrentMap<K1,K2,V>

java.lang.Object
  com.googlecode.ehcache.annotations.impl.MultiKeyConcurrentMap<K1,K2,V>

All Implemented Interfaces:

java.io.Serializable

public final class MultiKeyConcurrentMap<K1,K2,V>
extends java.lang.Object
implements java.io.Serializable

Simplified version of a ConcurrentMap that uses two keys. A nested map is used under the hood to make gets as fast as possible.

Version:

$Revision: 656 $

Author:

Eric Dalquist

See Also:

Serialized Form

Constructor Summary

MultiKeyConcurrentMap()

Method Summary

boolean	containsKey(K1 key1, K2 key2)
V	get(K1 key1, K2 key2)
V	put(K1 key1, K2 key2, V value)
V	putIfAbsent(K1 key1, K2 key2, V value)

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiKeyConcurrentMap

public MultiKeyConcurrentMap()

Method Detail

containsKey

public boolean containsKey(K1 key1,
                           K2 key2)

Parameters:

key1 - primary key

key2 - sub key

Returns:

true if the key-pair is contained

See Also:

Map.containsKey(Object)

put

public V put(K1 key1,
             K2 key2,
             V value)

Parameters:

key1 - primary key

key2 - sub key

value - The value to add to the map

Returns:

the previous value associated with the specified key or null if there was no previous value

See Also:

Map.put(Object, Object)

putIfAbsent

public V putIfAbsent(K1 key1,
                     K2 key2,
                     V value)

Parameters:

key1 - primary key

key2 - sub key

value - the value to add to the map if no previous value exists

Returns:

the previous value associated with the specified key or null if there was no previous value

See Also:

ConcurrentMap.putIfAbsent(Object, Object)

get

public V get(K1 key1,
             K2 key2)

Parameters:

key1 - primary key

key2 - sub key

Returns:

the value to which the specified keys are mapped, or null if there is no value

See Also:

Map.get(Object)