org.terrier.structures.indexing.singlepass.hadoop

Class IDComparator

java.lang.Object

org.terrier.structures.indexing.singlepass.hadoop.IDComparator

All Implemented Interfaces:

Comparator<String>

public class IDComparator
extends Object
implements Comparator<String>

Compares String objects. It is used to sort the Map ID's for the MapData files loaded during the reduce step. It makes sure that the Map ID's are in order of the documents that they processed.

Since:

3.0

Author:

Richard McCreadie

Constructor Summary

Constructors

Constructor and Description
IDComparator(LinkedList<MapData> mapData) constructor

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(String id1, String id2)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.Comparator

equals

Constructor Detail

IDComparator

public IDComparator(LinkedList<MapData> mapData)

constructor

Parameters:

mapData -

Method Detail

compare

public final int compare(String id1,
          String id2)

Specified by:

compare in interface Comparator<String>