/*
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 Apr 9, 2009
*/
package com.bigdata.btree.proc;
import com.bigdata.service.Split;
/**
* Combines together boolean values using a logical <code>OR</code>. The
* {@link #getResult() result} will be <code>true</code> if any of the
* component results was <code>true</code>.
*
* @author <a href="mailto:thompsonbry@users.sourceforge.net">Bryan Thompson</a>
*/
public class BooleanORAggregator implements IResultHandler<Boolean, Boolean> {
/**
* Note: The public methods are synchronized so that changes to this field
* state will be visible.
*/
private boolean flag;
public BooleanORAggregator() {
flag = false;
}
@Override
synchronized public void aggregate(final Boolean result, final Split split) {
flag |= result.booleanValue();
}
@Override
synchronized public Boolean getResult() {
return flag;
}
}