DataModifier.UserSongMapper.java Source code

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Here is the source code for DataModifier.UserSongMapper.java

Source

package DataModifier;
/*
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/**
 *
 * @author suryadev
 */

import java.io.IOException;

import DataManager.*;
import DataModifier.*;
import SongClassifier.*;
import Driver.*;

import org.apache.hadoop.io.DoubleWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
import org.apache.hadoop.conf.*;
import org.apache.hadoop.mapred.JobConf;
import org.apache.hadoop.mapred.MapReduceBase;
import org.apache.hadoop.mapred.Mapper;
import org.apache.hadoop.mapred.OutputCollector;
import org.apache.hadoop.mapred.Reporter;

public class UserSongMapper extends MapReduceBase implements Mapper<LongWritable, Text, Text, Text> {

    private IdClassSong Is = new IdClassSong();
    public UserCount Us = SingletonHash.us;

    int counta = 0, countb = 0, countc = 0, countd = 0, counte = 0;

    private static String user = "";

    public void configure(JobConf job) {
        user = job.get("userID");
    }

    /*String user="";
        
    public UserSongMapper(String users) {
           
       user=users;
    }*/

    public void map(LongWritable key, Text value, OutputCollector<Text, Text> output, Reporter reporter)
            throws IOException {

        //String user="CAKCLXJ1332EB06A11";
        //String user=TestDriver.users;
        String[] words = value.toString().split(",");
        String userId = words[0];
        String song = words[1];
        if (user.equals(userId)) {
            String classid = Is.getKeyValue(song);
            if (classid.equals("A"))
                counta++;
            if (classid.equals("B"))
                countb++;
            if (classid.equals("C"))
                countc++;
            if (classid.equals("D"))
                countd++;
            if (classid.equals("E"))
                counte++;

            Us.put_keyval("A", counta);
            Us.put_keyval("B", countb);
            Us.put_keyval("C", countc);
            Us.put_keyval("D", countd);
            Us.put_keyval("E", counte);
        }
        output.collect(new Text(userId), new Text(song));

    }

}