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}