org.apache.avro.hadoop.util

Class AvroCharSequenceComparator<T>

java.lang.Object

org.apache.avro.hadoop.util.AvroCharSequenceComparator<T>

Type Parameters:

T - The type of object to compare.

All Implemented Interfaces:

Comparator<T>

public class AvroCharSequenceComparator<T>
extends Object
implements Comparator<T>

Compares Avro string data (data with schema "string").

The only case where comparing Avro objects does not work using their natural order is when the schema is "string". The Avro string schema maps to the Java CharSequence interface, which does not define equals, hashCode, or compareTo.

Using this comparator enables comparisons between String and Utf8 objects that are both valid when working with Avro strings.

Field Summary

Fields

Modifier and Type	Field and Description
static AvroCharSequenceComparator<CharSequence>	INSTANCE A singleton instance.

Constructor Summary

Constructors

Constructor and Description
AvroCharSequenceComparator()

Method Summary

Modifier and Type	Method and Description
int	compare(T o1, T o2)

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

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

Field Detail

INSTANCE

public static final AvroCharSequenceComparator<CharSequence> INSTANCE

A singleton instance.

Constructor Detail

AvroCharSequenceComparator

public AvroCharSequenceComparator()

Method Detail

compare

public int compare(T o1,
                   T o2)

Specified by:

compare in interface Comparator<T>