/*
* Copyright (C) 2003-2007 eXo Platform SAS.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Affero General Public License
* as published by the Free Software Foundation; either version 3
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see<http://www.gnu.org/licenses/>.
*/
package org.etk.kernel.cache.concurrent;
import java.util.concurrent.atomic.AtomicLong;
/**
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
public class Item {
private static final AtomicLong generator = new AtomicLong(0);
final long serial = generator.incrementAndGet();
final int hashCode = (int)(serial % Integer.MAX_VALUE);
Item previous;
Item next;
/**
* This is final on purpose, we rely on object equality in the concurrent has
*/
public final boolean equals(Object obj) {
return ((Item)obj).serial == serial;
}
/**
* This is final on purpose, we rely on object equality in the concurrent has
*/
public final int hashCode() {
return hashCode;
}
}