org.glassfish.hk2.utilities.general.internal.DoubleNode Maven / Gradle / Ivy
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 2015 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*/
package org.glassfish.hk2.utilities.general.internal;
import java.lang.ref.ReferenceQueue;
import java.lang.ref.WeakReference;
/**
* Used for doubly linked lists with weak keys
*
* @author jwells
*
* @param key
* @param value
*/
public class DoubleNode {
private final WeakReference weakKey;
private final V value;
private DoubleNode previous;
private DoubleNode next;
private K hardenedKey;
public DoubleNode(K key, V value, ReferenceQueue queue) {
weakKey = new WeakReference(key, queue);
this.value = value;
}
/**
* @return the previous
*/
public DoubleNode getPrevious() {
return previous;
}
/**
* @param previous the previous to set
*/
public void setPrevious(DoubleNode previous) {
this.previous = previous;
}
/**
* @return the next
*/
public DoubleNode getNext() {
return next;
}
/**
* @param next the next to set
*/
public void setNext(DoubleNode next) {
this.next = next;
}
/**
* @return the weakKey
*/
public WeakReference getWeakKey() {
return weakKey;
}
/**
* @return the value
*/
public V getValue() {
return value;
}
/**
* @return the hardenedKey
*/
public K getHardenedKey() {
return hardenedKey;
}
/**
* @param hardenedKey the hardenedKey to set
*/
public void setHardenedKey(K hardenedKey) {
this.hardenedKey = hardenedKey;
}
}