org.apache.hadoop.io

Class NullWritable.Comparator

java.lang.Object

org.apache.hadoop.io.WritableComparator

org.apache.hadoop.io.NullWritable.Comparator

All Implemented Interfaces:

Comparator, Configurable, RawComparator

Enclosing class:

NullWritable

public static class NullWritable.Comparator
extends WritableComparator

A Comparator "optimized" for NullWritable.

Constructor Summary

Constructors

Constructor and Description
NullWritable.Comparator()

Method Summary

Methods

Modifier and Type	Method and Description
int	compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) Compare the buffers in serialized form.

Methods inherited from class org.apache.hadoop.io.WritableComparator

compare, compare, compareBytes, define, get, get, getConf, getKeyClass, hashBytes, hashBytes, newKey, readDouble, readFloat, readInt, readLong, readUnsignedShort, readVInt, readVLong, setConf

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

NullWritable.Comparator

public NullWritable.Comparator()

Method Detail

compare

public int compare(byte[] b1,
          int s1,
          int l1,
          byte[] b2,
          int s2,
          int l2)

Compare the buffers in serialized form.

Specified by:

compare in interface RawComparator

Overrides:

compare in class WritableComparator

Parameters:

b1 - The first byte array.

s1 - The position index in b1. The object under comparison's starting index.

l1 - The length of the object in b1.

b2 - The second byte array.

s2 - The position index in b2. The object under comparison's starting index.

l2 - The length of the object under comparison in b2.

Returns:

An integer result of the comparison.