package org.drools.util;

import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;

/*
 * 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.
 */

/**
 * The idea behind <code>LinkedListNodeWrapper</code> is to be able to add
 * the same <code>LinkedListNode</code> to multiple <code>LinkedList</code>s
 * where the node can have different previous and next nodes in each list.
 */
public class LinkedListEntry extends AbstractBaseLinkedListNode {

    private static final long serialVersionUID = 400L;
    private Object            object;

    public LinkedListEntry() {
    }

    public LinkedListEntry(final Object object) {
        this.object = object;
    }

    public void readExternal(ObjectInput in) throws IOException, ClassNotFoundException {
        super.readExternal(in);
        object  = in.readObject();
    }

    public void writeExternal(ObjectOutput out) throws IOException {
        super.writeExternal(out);
        out.writeObject(object);
    }
    
    public Object getObject() {
        return this.object;
    }

    public int hashCode() {
        return this.object.hashCode();
    }

    public boolean equals(final Object other) {
        return this.object.equals( other );
    }
}
