/**
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 Nov 17, 2006
*/
package com.bigdata.btree;
import com.bigdata.cache.IHardReferenceQueue;
/**
* Hard reference cache eviction listener for leaves always throws an
* exception. This is used for some unit tests to ensure that cache
* evictions are not occurring and that copy on write situations are
* therefore never triggered (except that they will of course be triggered
* following a commit).
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
* @version $Id$
*/
public class NoEvictionListener implements
IEvictionListener {
public void evicted(final IHardReferenceQueue<PO> cache, final PO ref) {
if ( ref.isDirty() && !ref.isDeleted()) {
throw new UnsupportedOperationException(
"Eviction is disabled: ref=" + ref);
}
}
}