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.tools.twitter.token.outputmode.correlation; 031 032import org.apache.hadoop.io.BytesWritable; 033import org.apache.hadoop.io.NullWritable; 034import org.apache.hadoop.io.Text; 035import org.apache.hadoop.mapreduce.Mapper; 036import org.openimaj.hadoop.mapreduce.stage.helper.SequenceFileTextStage; 037import org.openimaj.util.pair.IndependentPair; 038 039/** 040 * @author Sina Samangooei (ss@ecs.soton.ac.uk) 041 * 042 */ 043public class CorrelateWordTimeSeries extends SequenceFileTextStage<Text, BytesWritable, NullWritable, Text, NullWritable, Text>{ 044 /** 045 * the directory this stage will output 046 */ 047 public static final String CORRELATE_WORDTIME = "correlate_wordtime"; 048 public static final String PERIOD_START = "org.openimaj.hadoop.tools.twitter.time.startperiod"; 049 public static final String PERIOD_END = "org.openimaj.hadoop.tools.twitter.time.endperiod"; 050 public static final String FINANCE_DATA = "org.openimaj.hadoop.tools.twitter.finance.data"; 051 private String finance; 052 private long start; 053 private long end; 054 055 public CorrelateWordTimeSeries(String financelocation,IndependentPair<Long, Long> startend) { 056 this.finance = financelocation; 057 this.start = startend.firstObject(); 058 this.end = startend.secondObject(); 059 } 060 061 @Override 062 public void setup(org.apache.hadoop.mapreduce.Job job) { 063 job.getConfiguration().setLong(PERIOD_START, start); 064 job.getConfiguration().setLong(PERIOD_END, end); 065 job.getConfiguration().setStrings(FINANCE_DATA, finance); 066 job.setNumReduceTasks(1); 067 }; 068 069 @Override 070 public String outname() { 071 return CORRELATE_WORDTIME; 072 } 073 074 @Override 075 public Class<? extends Mapper<Text, BytesWritable, NullWritable, Text>> mapper() { 076 return WordTimeperiodValueMapper.class; 077 } 078 079// @Override 080// public Class<? extends Reducer<Text, BytesWritable, NullWritable, Text>> reducer() { 081// return WordValueCorrelationReducer.class; 082// } 083}