Package org.apache.flink.api.common.typeutils

Class CompositeTypeComparator<T>

java.lang.Object

org.apache.flink.api.common.typeutils.TypeComparator<T>

org.apache.flink.api.common.typeutils.CompositeTypeComparator<T>

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

PojoComparator, RowComparator, TupleComparatorBase

@PublicEvolving
public abstract class CompositeTypeComparator<T>
extends TypeComparator<T>

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor	Description
CompositeTypeComparator()

Method Summary

Modifier and Type	Method	Description
abstract void	getFlatComparator(List<TypeComparator> flatComparators)
TypeComparator[]	getFlatComparators()	Get the field comparators.

Methods inherited from class org.apache.flink.api.common.typeutils.TypeComparator

compare, compareAgainstReference, compareSerialized, compareToReference, duplicate, equalToReference, extractKeys, getNormalizeKeyLen, hash, invertNormalizedKey, isNormalizedKeyPrefixOnly, putNormalizedKey, readWithKeyDenormalization, setReference, supportsCompareAgainstReference, supportsNormalizedKey, supportsSerializationWithKeyNormalization, writeWithKeyNormalization

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

CompositeTypeComparator

public CompositeTypeComparator()

Method Detail

getFlatComparators

public TypeComparator[] getFlatComparators()

Description copied from class: TypeComparator

Get the field comparators. This is used together with TypeComparator.extractKeys(Object, Object[], int) to provide interoperability between different record types. Note, that this should return at least one Comparator and that the number of Comparators must match the number of extracted keys.

Specified by:

getFlatComparators in class TypeComparator<T>

Returns:

An Array of Comparators for the extracted keys.

getFlatComparator

public abstract void getFlatComparator(List<TypeComparator> flatComparators)