com.marklogic.mapreduce.test.ElemValueCooccurrencesTest Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of marklogic-mapreduce2 Show documentation

MarkLogic Connector for Hadoop MapReduce

There is a newer version: 2.3.4.2

package com.marklogic.mapreduce.test;

import java.io.IOException;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.io.Writable;
import org.apache.hadoop.mapreduce.Job;
import org.apache.hadoop.mapreduce.Mapper;
import org.apache.hadoop.mapreduce.lib.output.FileOutputFormat;
import org.apache.hadoop.mapreduce.lib.output.TextOutputFormat;
import org.apache.hadoop.util.GenericOptionsParser;

import com.marklogic.mapreduce.MarkLogicConstants;
import com.marklogic.mapreduce.ValueInputFormat;
import com.marklogic.mapreduce.functions.ElemValueCooccurrences;

public class ElemValueCooccurrencesTest {
    public static class ElemCooccurrencesMapper 
    extends Mapper {
        public void map(LongWritable key, Text value, Context context)
        throws IOException, InterruptedException {
            context.write(key, value);
        }
    }
    
    public static void main(String[] args) throws Exception {
        Configuration conf = new Configuration();
        String[] otherArgs = new GenericOptionsParser(conf, args).getRemainingArgs();
        if (otherArgs.length < 1) {
            System.err.println("Usage: ElemValueCooccurrencesTest configFile outputDir");
            System.exit(2);
        }

        Job job = Job.getInstance(conf);
        job.setJarByClass(ElemValueCooccurrencesTest.class);
        job.setInputFormatClass(ValueInputFormat.class);
        job.setMapperClass(ElemCooccurrencesMapper.class);
        job.setMapOutputKeyClass(LongWritable.class);
        job.setMapOutputValueClass(Text.class);
        job.setOutputFormatClass(TextOutputFormat.class);
        FileOutputFormat.setOutputPath(job, new Path(otherArgs[1]));

        conf = job.getConfiguration();
        conf.addResource(otherArgs[0]);
        conf.setClass(MarkLogicConstants.INPUT_VALUE_CLASS, Text.class, 
                Writable.class);
        conf.setClass(MarkLogicConstants.INPUT_LEXICON_FUNCTION_CLASS, 
            ElemValueCooccurrencesFunction.class, ElemValueCooccurrences.class);

        System.exit(job.waitForCompletion(true) ? 0 : 1);
    }
    
    static class ElemValueCooccurrencesFunction extends ElemValueCooccurrences {
        
        @Override
        public String[] getUserDefinedOptions() {
            String[] options = 
                {"proximity=1"};
            return options;
        }
        
        @Override
        public String getElementName1() {
            return "xs:QName(\"wp:title\")";
        }

        @Override
        public String getElementName2() {
            return "xs:QName(\"wp:id\")";
        }
    }
}