org.apache.hadoop.io.serializer
Class DeserializerComparator<T>

java.lang.Object
  org.apache.hadoop.io.serializer.DeserializerComparator<T>

Type Parameters:

T -

All Implemented Interfaces:

Comparator<T>, RawComparator<T>

Direct Known Subclasses:

JavaSerializationComparator

public abstract class DeserializerComparator<T>
extends Object
implements RawComparator<T>

A RawComparator that uses a Deserializer to deserialize the objects to be compared so that the standard Comparator can be used to compare them.

One may optimize compare-intensive operations by using a custom implementation of RawComparator that operates directly on byte representations.

Constructor Summary

protected

DeserializerComparator(Deserializer<T> deserializer)

Method Summary

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

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

compare, equals

Constructor Detail

DeserializerComparator

protected DeserializerComparator(Deserializer<T> deserializer)
                          throws IOException

Throws:

IOException

Method Detail

compare

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

Specified by:

compare in interface RawComparator<T>