content: package com.manning.hip.ch4.joins.improved.impl;
  
  import org.apache.commons.lang.builder.ToStringBuilder;
  import org.apache.hadoop.io.*;
  
  import java.io.*;
  
  public class CompositeKey implements WritableComparable<CompositeKey> {
  
  	private String key = "";
  	private long order = 0;
  
    public CompositeKey() {
    }
  
    public CompositeKey(String key, long order) {
      this.key = key;
      this.order = order;
    }
  
  	public String getKey() {
  		return this.key;
  	}
  
  	public long getOrder() {
  		return this.order;
  	}
  
    public void setKey(String key) {
      this.key = key;
    }
  
    public void setOrder(long order) {
      this.order = order;
    }
  
    @Override
  	public void readFields(DataInput in) throws IOException {
  		this.key = in.readUTF();
  		this.order = in.readLong();
  	}
  
  	@Override
  	public void write(DataOutput out) throws IOException {
  		out.writeUTF(key);
  		out.writeLong(this.order);
  	}
  
  	@Override
  	public int compareTo(CompositeKey other) {
  		if (this.key.compareTo(other.key) != 0) {
  			return this.key.compareTo(other.key);
  		} else if (this.order != other.order) {
  			return order < other.order ? -1 : 1;
  		} else {
  			return 0;
  		}
  	}
  
  	public static class CompositeKeyComparator extends WritableComparator {
  		public CompositeKeyComparator() {
  			super(CompositeKey.class);
  		}
  
  		public int compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) {
  			return compareBytes(b1, s1, l1, b2, s2, l2);
  		}
  	}
  
    @Override
    public String toString() {
      return ToStringBuilder.reflectionToString(this);
    }
  
  
  
  	static { // register this comparator
  		WritableComparator.define(CompositeKey.class,
  				new CompositeKeyComparator());
  	}
  }
  