org.jboss.kernel.plugins.annotations.wb
Class CompositeKey<T,U>

java.lang.Object
  org.jboss.kernel.plugins.annotations.wb.CompositeKey<T,U>

Type Parameters:

T - exact weak part type

U - rest of the composite key

public abstract class CompositeKey<T,U>
extends Object

Composite map key with weak part notion.

Author:

Ales Justin, Brian Stansberry

Constructor Summary

protected

CompositeKey(T weakPart, U[] rest)

Method Summary

boolean	equals(Object obj)
protected abstract ReferenceQueue<T>	getReferenceQueue() Get the reference queue holding gced references.
protected int	getRestHashCode() Get rest hash code.
protected int	getWeakPartHashCode() Get weak part hash code.
int	hashCode()
protected static int	safeWeakHaskHode(WeakReference wr) Get hash code from weak ref.
protected boolean	shouldCleanKeyRefs() Allows optimization; i.e.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompositeKey

protected CompositeKey(T weakPart,
                       U[] rest)

Method Detail

getReferenceQueue

protected abstract ReferenceQueue<T> getReferenceQueue()

Get the reference queue holding gced references.

Returns:

the reference queue

safeWeakHaskHode

protected static int safeWeakHaskHode(WeakReference wr)

Get hash code from weak ref. If already null return zero.

Parameters:

wr - the weak reference

Returns:

wr's value hash code

getWeakPartHashCode

protected int getWeakPartHashCode()

Get weak part hash code.

Returns:

the weak part hash code

getRestHashCode

protected int getRestHashCode()

Get rest hash code.

Returns:

the rest hash code

hashCode

public int hashCode()

Overrides:

hashCode in class Object

equals

public boolean equals(Object obj)

Overrides:

equals in class Object

shouldCleanKeyRefs

protected boolean shouldCleanKeyRefs()

Allows optimization; i.e. change to only poll the queue every X invocations.

Returns:

true if we should clean refs