/**
* Copyright 2005 JBoss Inc
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.drools.core.util;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
/**
* Provides a abstract base implementation that an object can extend so that it can be used in a LinkedList.
*
* @see LinkedList
*
* @author <a href="mailto:mark.proctor@jboss.com">Mark Proctor</a>
* @author <a href="mailto:bob@werken.com">Bob McWhirter</a>
*/
public class AbstractBaseLinkedListNode
implements
LinkedListNode {
private static final long serialVersionUID = 510l;
private LinkedListNode previous;
private LinkedListNode next;
/**
* Empty Constructor
*/
public AbstractBaseLinkedListNode() {
}
public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
previous = (LinkedListNode)in.readObject();
next = (LinkedListNode)in.readObject();
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(previous);
out.writeObject(next);
}
/* (non-Javadoc)
* @see org.drools.reteoo.LinkedListNode#getNext()
*/
public LinkedListNode getNext() {
return this.next;
}
/* (non-Javadoc)
* @see org.drools.reteoo.LinkedListNode#setNext(org.drools.reteoo.LinkedListNode)
*/
public void setNext(final LinkedListNode next) {
this.next = next;
}
/* (non-Javadoc)
* @see org.drools.reteoo.LinkedListNode#getPrevious()
*/
public LinkedListNode getPrevious() {
return this.previous;
}
/* (non-Javadoc)
* @see org.drools.reteoo.LinkedListNode#setPrevious(org.drools.reteoo.LinkedListNode)
*/
public void setPrevious(final LinkedListNode previous) {
this.previous = previous;
}
}