Package 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

@Public
@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	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, equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Method Details

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.