com.bigdata.service.ndx.pipeline.IMasterTask Maven / Gradle / Ivy

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/*

Copyright (C) SYSTAP, LLC DBA Blazegraph 2006-2016.  All rights reserved.

Contact:
     SYSTAP, LLC DBA Blazegraph
     2501 Calvert ST NW #106
     Washington, DC 20008
     [email protected]

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 20, 2009
 */

package com.bigdata.service.ndx.pipeline;

import java.util.concurrent.Callable;

import com.bigdata.relation.accesspath.BlockingBuffer;

/**
 * Interface for task consuming data written on an application on an
 * asynchronous write buffer.
 * 
 * @param 
 *            The generic type of the value returned by the {@link Callable} for
 *            the master (the statistics object).
 * @param 
 *            The generic type of the elements in the chunks stored in the
 *            {@link BlockingBuffer}.
 * 
 * @author Bryan Thompson
 * @version $Id$
 */
public interface IMasterTask {

    /**
     * The top-level buffer on which the application is writing.
     */
    public BlockingBuffer getBuffer();
    
    /**
     * The statistics.
     */
    public H getStats();
    
}