001/**
002 * Copyright (c) 2011, The University of Southampton and the individual contributors.
003 * All rights reserved.
004 *
005 * Redistribution and use in source and binary forms, with or without modification,
006 * are permitted provided that the following conditions are met:
007 *
008 *   *  Redistributions of source code must retain the above copyright notice,
009 *      this list of conditions and the following disclaimer.
010 *
011 *   *  Redistributions in binary form must reproduce the above copyright notice,
012 *      this list of conditions and the following disclaimer in the documentation
013 *      and/or other materials provided with the distribution.
014 *
015 *   *  Neither the name of the University of Southampton nor the names of its
016 *      contributors may be used to endorse or promote products derived from this
017 *      software without specific prior written permission.
018 *
019 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
020 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
021 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
022 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
023 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
024 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
025 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
026 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
027 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
028 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
029 */
030package org.openimaj.hadoop.mapreduce.stage.helper;
031
032import org.apache.hadoop.io.LongWritable;
033import org.apache.hadoop.io.NullWritable;
034import org.apache.hadoop.io.Text;
035import org.apache.hadoop.mapreduce.lib.input.TextInputFormat;
036import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
037import org.openimaj.hadoop.mapreduce.stage.Stage;
038
039/**
040 * A helper class for a common stage type. In this case the stage inputs and
041 * outputs raw text while in the middle something else happens
042 * 
043 * @author Sina Samangooei (ss@ecs.soton.ac.uk)
044 * 
045 * @param <MAPOUTKEY>
046 *            The key for the map output
047 * @param <MAPOUTVALUE>
048 *            The value for the map output
049 * 
050 */
051public abstract class TextSomethingTextStage<MAPOUTKEY, MAPOUTVALUE>
052                extends
053                        Stage<TextInputFormat, TextOutputFormat<NullWritable, Text>, LongWritable, Text, MAPOUTKEY, MAPOUTVALUE, NullWritable, Text>
054{
055
056}