io.prestosql.operator.aggregation.histogram

Class HistogramStateFactory

java.lang.Object

io.prestosql.operator.aggregation.histogram.HistogramStateFactory

All Implemented Interfaces:

AccumulatorStateFactory<HistogramState>

public class HistogramStateFactory
extends Object
implements AccumulatorStateFactory<HistogramState>

Constructor Summary

Constructors

Constructor and Description
HistogramStateFactory(Type keyType, int expectedEntriesCount, HistogramGroupImplementation mode)

Method Summary

Modifier and Type	Method and Description
HistogramState	createGroupedState()
HistogramState	createSingleState()
Class<? extends HistogramState>	getGroupedStateClass()
Class<? extends HistogramState>	getSingleStateClass()

Methods inherited from class java.lang.Object

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

Constructor Detail

HistogramStateFactory

public HistogramStateFactory(Type keyType,
                             int expectedEntriesCount,
                             HistogramGroupImplementation mode)

Method Detail

createSingleState

public HistogramState createSingleState()

Specified by:

createSingleState in interface AccumulatorStateFactory<HistogramState>

getSingleStateClass

public Class<? extends HistogramState> getSingleStateClass()

Specified by:

getSingleStateClass in interface AccumulatorStateFactory<HistogramState>

createGroupedState

public HistogramState createGroupedState()

Specified by:

createGroupedState in interface AccumulatorStateFactory<HistogramState>

getGroupedStateClass

public Class<? extends HistogramState> getGroupedStateClass()

Specified by:

getGroupedStateClass in interface AccumulatorStateFactory<HistogramState>