/**
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 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 License for more details.
You should have received a copy of the GNU General 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 Aug 19, 2015
*/
package com.bigdata.bop.join;
import java.io.Serializable;
import com.bigdata.bop.BOpContext;
import com.bigdata.bop.BOpEvaluationContext;
import com.bigdata.bop.IBindingSet;
import com.bigdata.bop.PipelineOp;
import com.bigdata.bop.controller.INamedSolutionSetRef;
/**
* Interface for the factory pattern to create a {@link IHashJoinUtility}.
*
* @see BLZG-1438 (by using such a factory as an annotation of
* {@link HashIndexOpBase} it becomes possible
* to get rid of the two earlier subclasses of
* {@link HashIndexOp} (namely, HTreeHashIndexOp
* and JVMHashIndexOp) which imposed the duplication
* of code)
*
* @author <a href="http://olafhartig.de/">Olaf Hartig</a>
* @version $Id$
*/
public interface IHashJoinUtilityFactory extends Serializable {
/**
* Return an instance of the {@link IHashJoinUtility}.
*
* @param context
* The {@link BOpEvaluationContext}
* @param namedSetRef
* Metadata to identify the named solution set.
* @param op
* The operator whose annotation will inform the construction of
* the hash index.
* @param joinType
* The type of join.
*/
IHashJoinUtility create(//
final BOpContext<IBindingSet> context,//
final INamedSolutionSetRef namedSetRef,//
final PipelineOp op,//
final JoinTypeEnum joinType//
);
}