001/* A PACT Reduce stub that runs a Kepler workflow.
002 * 
003 * Copyright (c) 2011-2012 The Regents of the University of California.
004 * All rights reserved.
005 *
006 * '$Author: crawl $'
007 * '$Date: 2015-08-24 22:42:20 +0000 (Mon, 24 Aug 2015) $' 
008 * '$Revision: 33628 $'
009 * 
010 * Permission is hereby granted, without written agreement and without
011 * license or royalty fees, to use, copy, modify, and distribute this
012 * software and its documentation for any purpose, provided that the above
013 * copyright notice and the following two paragraphs appear in all copies
014 * of this software.
015 *
016 * IN NO EVENT SHALL THE UNIVERSITY OF CALIFORNIA BE LIABLE TO ANY PARTY
017 * FOR DIRECT, INDIRECT, SPECIAL, INCIDENTAL, OR CONSEQUENTIAL DAMAGES
018 * ARISING OUT OF THE USE OF THIS SOFTWARE AND ITS DOCUMENTATION, EVEN IF
019 * THE UNIVERSITY OF CALIFORNIA HAS BEEN ADVISED OF THE POSSIBILITY OF
020 * SUCH DAMAGE.
021 *
022 * THE UNIVERSITY OF CALIFORNIA SPECIFICALLY DISCLAIMS ANY WARRANTIES,
023 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
024 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE SOFTWARE
025 * PROVIDED HEREUNDER IS ON AN "AS IS" BASIS, AND THE UNIVERSITY OF
026 * CALIFORNIA HAS NO OBLIGATION TO PROVIDE MAINTENANCE, SUPPORT, UPDATES,
027 * ENHANCEMENTS, OR MODIFICATIONS.
028 *
029 */
030package org.kepler.stratosphere.stub;
031
032import org.apache.commons.logging.Log;
033import org.apache.commons.logging.LogFactory;
034
035import eu.stratosphere.api.java.record.operators.ReduceOperator.Combinable;
036import eu.stratosphere.configuration.Configuration;
037import ptolemy.actor.ExecutionListener;
038
039/** A PACT Reduce stub that runs a Kepler workflow. This stub
040 *  is used for both Combine and Reduce.
041 * 
042 *  @author Daniel Crawl
043 *  @version $Id: KeplerCombineAndReduceStub.java 33628 2015-08-24 22:42:20Z crawl $
044 */
045@Combinable
046public class KeplerCombineAndReduceStub extends KeplerReduceStub implements ExecutionListener {
047    
048    @Override
049    public void open(Configuration parameters) throws Exception {
050        super.open(parameters);
051        
052        LOG.info("reduce stub running as combiner.");
053    }
054    
055    /** Logging. */
056    private static final Log LOG = LogFactory.getLog(KeplerCombineAndReduceStub.class);
057}