/*
* Copyright (C) 2009 eXo Platform SAS.
*
* 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.exoplatform.services.cache.concurrent;
import org.exoplatform.services.cache.ObjectCacheInfo;
import java.io.Serializable;
/**
* An reference to an object.
*
* @author <a href="mailto:julien.viet@exoplatform.com">Julien Viet</a>
* @version $Revision$
*/
abstract class ObjectRef<K extends Serializable, V> extends Item implements ObjectCacheInfo<V>
{
protected final long expirationTime;
protected final K name;
protected ObjectRef(long expirationTime, K name)
{
this.name = name;
this.expirationTime = expirationTime;
}
public abstract boolean isValid();
public abstract V getObject();
// ObjectCacheInfo impl
public long getExpireTime()
{
return expirationTime;
}
public V get()
{
return getObject();
}
}