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

static AvroCharSequenceComparator<CharSequence>

INSTANCE A singleton instance.

Constructor Summary

AvroCharSequenceComparator()

Method Summary

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

equals

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>