/*
* JBoss, Home of Professional Open Source.
* Copyright 2008, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.ejb;
import java.io.ObjectOutput;
import java.io.ObjectInput;
import java.io.IOException;
/**
* ListCacheKey extends {@link CacheKey} and holds info about the List that the entity belongs to,
* it is used with CMP 2.0 for reading ahead.
*
* @author <a href="mailto:on@ibis.odessa.ua">Oleg Nitz</a>
* @version $Revision: 81030 $
*/
public final class ListCacheKey
extends CacheKey
{
// Constants -----------------------------------------------------
// Attributes ----------------------------------------------------
/**
* The list id.
*/
private long listId;
/**
* The index of this entity in the list.
*/
private int index;
// Static --------------------------------------------------------
// Public --------------------------------------------------------
public ListCacheKey() {
// For externalization only
}
/**
* @param listId The list id.
* @param index The index of this entity in the list.
*/
public ListCacheKey(Object id, long listId, int index) {
super(id);
this.listId = listId;
this.index = index;
}
public long getListId()
{
return listId;
}
public int getIndex()
{
return index;
}
// Z implementation ----------------------------------------------
// Package protected ---------------------------------------------
// Protected -----------------------------------------------------
// Private -------------------------------------------------------
public void writeExternal(ObjectOutput out)
throws IOException
{
super.writeExternal(out);
out.writeLong(listId);
out.writeInt(index);
}
public void readExternal(ObjectInput in)
throws IOException, ClassNotFoundException
{
super.readExternal(in);
listId = in.readLong();
index = in.readInt();
}
// Inner classes -------------------------------------------------
}