com.hp.util.cache

Class CachedValueWeakReference<K,V>

java.lang.Object

java.lang.ref.Reference<T>

java.lang.ref.WeakReference<V>

com.hp.util.cache.CachedValueWeakReference<K,V>

Type Parameters:

K - the type of keys maintained by the cache that holds these value references

V - the type of cached values

public final class CachedValueWeakReference<K,V>
extends WeakReference<V>

This class extends WeakReference to allow us to encapsulate the cache that contains this reference, and the key with which it is associated.

Author:

Simon Hunt

Constructor Summary

Constructors

Constructor and Description
CachedValueWeakReference(WeakValueCache<K,V> cache, K key, V referent, ReferenceQueue<? super V> q) Constructs a new cached value weak reference that refers to the given object and is registered with the given queue.

Method Summary

Methods

Modifier and Type	Method and Description
String	toString()

Methods inherited from class java.lang.ref.Reference

clear, enqueue, get, isEnqueued

Methods inherited from class java.lang.Object

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

Constructor Detail

CachedValueWeakReference

public CachedValueWeakReference(WeakValueCache<K,V> cache,
                        K key,
                        V referent,
                        ReferenceQueue<? super V> q)

Constructs a new cached value weak reference that refers to the given object and is registered with the given queue.

Parameters:

cache - the cache that holds this reference

key - the key associated with the reference

referent - the object to which the new weak reference will refer

q - the queue with which the reference is to be registered

Throws:

NullPointerException - if any parameter is null

Method Detail

toString

public String toString()

Overrides:

toString in class Object