org.apache.flink.api.java.typeutils.runtime.record

Class RecordComparatorFactory

java.lang.Object

org.apache.flink.api.java.typeutils.runtime.record.RecordComparatorFactory

All Implemented Interfaces:

TypeComparatorFactory<Record>

public class RecordComparatorFactory
extends Object
implements TypeComparatorFactory<Record>

A factory for a TypeComparator for Record. The comparator uses a subset of the fields for the comparison. That subset of fields (positions and types) is read from the supplied configuration.

Constructor Summary

Constructors

Constructor and Description
RecordComparatorFactory()
RecordComparatorFactory(int[] positions, Class<? extends Key<?>>[] types)
RecordComparatorFactory(int[] positions, Class<? extends Key<?>>[] types, boolean[] sortDirections)

Method Summary

Methods

Modifier and Type	Method and Description
RecordComparator	createComparator()
void	readParametersFromConfig(Configuration config, ClassLoader cl)
void	writeParametersToConfig(Configuration config)

Methods inherited from class java.lang.Object

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

Constructor Detail

RecordComparatorFactory

public RecordComparatorFactory()

RecordComparatorFactory

public RecordComparatorFactory(int[] positions,
                       Class<? extends Key<?>>[] types)

RecordComparatorFactory

public RecordComparatorFactory(int[] positions,
                       Class<? extends Key<?>>[] types,
                       boolean[] sortDirections)

Method Detail

writeParametersToConfig

public void writeParametersToConfig(Configuration config)

Specified by:

writeParametersToConfig in interface TypeComparatorFactory<Record>

readParametersFromConfig

public void readParametersFromConfig(Configuration config,
                            ClassLoader cl)
                              throws ClassNotFoundException

Specified by:

readParametersFromConfig in interface TypeComparatorFactory<Record>

Throws:

ClassNotFoundException

createComparator

public RecordComparator createComparator()

Specified by:

createComparator in interface TypeComparatorFactory<Record>