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/*
* Copyright (c) 2004 - 2012 Eike Stepper (Berlin, Germany) and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Eike Stepper - initial API and implementation
*/
package org.eclipse.net4j.util.ref;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;
import java.text.MessageFormat;
/**
* @author Eike Stepper
*/
public class KeyedWeakReference<K, T> extends WeakReference<T> implements KeyedReference<K, T>
{
private K key;
public KeyedWeakReference(K key, T ref)
{
super(ref);
this.key = key;
}
public KeyedWeakReference(K key, T ref, ReferenceQueue<T> queue)
{
super(ref, queue);
this.key = key;
}
public ReferenceType getType()
{
return ReferenceType.WEAK;
}
public K getKey()
{
return key;
}
@Override
public String toString()
{
return MessageFormat.format("KeyedWeakReference[{0} -> {1}]", key, isEnqueued() ? "ENQUEUED" : get()); //$NON-NLS-1$ //$NON-NLS-2$
}
}
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