/**
Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016. All rights reserved.
Contact:
SYSTAP, LLC DBA Blazegraph
2501 Calvert ST NW #106
Washington, DC 20008
licenses@blazegraph.com
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; version 2 of the License.
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, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
/*
* Created on Dec 13, 2005
*/
package com.bigdata.cache;
/**
* <p>
* Interface for hard reference cache entries exposes a <i>dirty</i> flag in
* addition to the object identifier and object reference.
* </p>
*
* @author thompsonbry
* @version $Id$
*
* @todo Support clearing updated objects for hot cache between transactions.
* Add metadata boolean that indicates whether the object was modified
* since the cache was last cleared regardless of whether the object has
* since been installed on the persistence layer and marked as clean. The
* purpose of this is to support clearing of modified objects from the
* object cache when a transaction is aborted. Such objects must be
* cleared if they have been modified since they were installed in the
* cache regardless of whether they are currently dirty or not. Supporting
* this feature will probably require a hard reference Set containing the
* object identifier of each object that was marked as dirty in the cache
* since the cache was last cleared.
*/
public interface ICacheEntry<K,T> extends IWeakRefCacheEntry<K,T> {
/**
* Return true iff the object associated with this entry is dirty.
*/
public boolean isDirty();
/**
* Set the dirty flag.
*
* @param dirty
* true iff the object associated with this entry is dirty.
*/
public void setDirty(boolean dirty);
}