com.google.appengine.tools.mapreduce.impl.sort

Class LexicographicalComparator

java.lang.Object

com.google.appengine.tools.mapreduce.impl.sort.LexicographicalComparator

All Implemented Interfaces:

Comparator<ByteBuffer>

public final class LexicographicalComparator
extends Object
implements Comparator<ByteBuffer>

Acts as a comparator for two byte buffers. This class is used to sort keys lexicographically. Meaning that if there are two strings using the same character encoding they should sort properly. Also if positive or unsigned integers or longs are encoded to a fixed width these should sort correctly also.

Constructor Summary

Constructors

Constructor and Description
LexicographicalComparator()

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(ByteBuffer left, ByteBuffer right)
static int	compareBuffers(ByteBuffer left, ByteBuffer right)

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

LexicographicalComparator

public LexicographicalComparator()

Method Detail

compareBuffers

public static int compareBuffers(ByteBuffer left,
                 ByteBuffer right)

compare

public int compare(ByteBuffer left,
          ByteBuffer right)

Specified by:

compare in interface Comparator<ByteBuffer>