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}