crimeScoreMapper.java Source code

Introduction

Here is the source code for crimeScoreMapper.java

Source

import java.io.IOException;
import java.util.StringTokenizer;
import org.apache.hadoop.io.IntWritable;
import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.Text;
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 crimeScoreMapper extends MapReduceBase implements Mapper<LongWritable, Text, Text, IntWritable> {

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

        StringTokenizer tokenizer = new StringTokenizer(value.toString(), ",");
        if (tokenizer.countTokens() != 0) {
            String[] data = new String[tokenizer.countTokens()];
            int i = 0;
            while (tokenizer.hasMoreTokens()) {
                data[i] = tokenizer.nextToken();
                i++;
            }
            String type = data[2];
            type = type.trim();
            int weight = 0;
            if (type.equalsIgnoreCase("arson")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("theft")) {
                weight = 3;
            } else if (type.equalsIgnoreCase("assault")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("battery")) {
                weight = 4;
            } else if (type.equalsIgnoreCase("robbery")) {
                weight = 3;
            } else if (type.equalsIgnoreCase("burglary")) {
                weight = 3;
            } else if (type.equalsIgnoreCase("gambling")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("homicide")) {
                weight = 4;
            } else if (type.equalsIgnoreCase("stalking")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("narcotics")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("obscenity")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("kidnapping")) {
                weight = 3;
            } else if (type.equalsIgnoreCase("sex offense")) {
                weight = 3;
            } else if (type.equalsIgnoreCase("intimidation")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("non - criminal")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("prostitution")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("other offense")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("non-criminal")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("criminal damage")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("public indecency")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("criminal trespass")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("human trafficking")) {
                weight = 3;
            } else if (type.equalsIgnoreCase("weapons violation")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("deceptive practice")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("crim sexual assault")) {
                weight = 4;
            } else if (type.equalsIgnoreCase("motor vehicle theft")) {
                weight = 2;
            } else if (type.equalsIgnoreCase("liquor law violation")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("public peace violation")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("other narcotic violation")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("offense involving children")) {
                weight = 3;
            } else if (type.equalsIgnoreCase("interference with public officer")) {
                weight = 1;
            } else if (type.equalsIgnoreCase("concealed carry license violation")) {
                weight = 2;
            }

            if (data[3].trim().startsWith("60"))
                output.collect(new Text(data[3].trim()), new IntWritable(weight));
            else
                output.collect(new Text(data[4].trim()), new IntWritable(weight));
        } else {
            output.collect(new Text("ProBLEMMMMMMMMMMMMMMMMMMMMM"), new IntWritable(1));
        }
    }
}