org.apache.hadoop.io

Interface RawComparator<T>

Type Parameters:

T - generic type.

All Superinterfaces:

Comparator<T>

All Known Implementing Classes:

org.apache.hadoop.io.serializer.DeserializerComparator, JavaSerializationComparator, KeyFieldBasedComparator, KeyFieldBasedComparator, RecordComparator, WritableComparator

@InterfaceAudience.Public
 @InterfaceStability.Stable
public interface RawComparator<T>
extends Comparator<T>

A Comparator that operates directly on byte representations of objects.

See Also:

DeserializerComparator

Method Summary

Modifier and Type	Method and Description
int	compare(byte[] b1, int s1, int l1, byte[] b2, int s2, int l2) Compare two objects in binary.

Methods inherited from interface java.util.Comparator

compare, comparing, comparing, comparingDouble, comparingInt, comparingLong, equals, naturalOrder, nullsFirst, nullsLast, reversed, reverseOrder, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Method Detail

compare

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

Compare two objects in binary. b1[s1:l1] is the first object, and b2[s2:l2] is the second object.

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.