io.prestosql.operator

Class MultiChannelGroupByHash

java.lang.Object

io.prestosql.operator.MultiChannelGroupByHash

All Implemented Interfaces:

GroupByHash

public class MultiChannelGroupByHash
extends Object
implements GroupByHash

Constructor Summary

Constructors

Constructor and Description
MultiChannelGroupByHash(List<? extends Type> hashTypes, int[] hashChannels, Optional<Integer> inputHashChannel, int expectedSize, boolean processDictionary, JoinCompiler joinCompiler, UpdateMemory updateMemory)

Method Summary

Modifier and Type	Method and Description
Work<?>	addPage(Page page)
void	appendValuesTo(int groupId, PageBuilder pageBuilder, int outputChannelOffset)
boolean	contains(int position, Page page, int[] hashChannels)
boolean	contains(int position, Page page, int[] hashChannels, long rawHash)
int	getCapacity()
long	getEstimatedSize()
double	getExpectedHashCollisions()
int	getGroupCount()
Work<GroupByIdBlock>	getGroupIds(Page page)
long	getHashCollisions()
long	getRawHash(int groupId)
List<Type>	getTypes()

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.prestosql.operator.GroupByHash

createGroupByHash, createGroupByHash

Constructor Detail

MultiChannelGroupByHash

public MultiChannelGroupByHash(List<? extends Type> hashTypes,
                               int[] hashChannels,
                               Optional<Integer> inputHashChannel,
                               int expectedSize,
                               boolean processDictionary,
                               JoinCompiler joinCompiler,
                               UpdateMemory updateMemory)

Method Detail

getRawHash

public long getRawHash(int groupId)

Specified by:

getRawHash in interface GroupByHash

getEstimatedSize

public long getEstimatedSize()

Specified by:

getEstimatedSize in interface GroupByHash

getHashCollisions

public long getHashCollisions()

Specified by:

getHashCollisions in interface GroupByHash

getExpectedHashCollisions

public double getExpectedHashCollisions()

Specified by:

getExpectedHashCollisions in interface GroupByHash

getTypes

public List<Type> getTypes()

Specified by:

getTypes in interface GroupByHash

getGroupCount

public int getGroupCount()

Specified by:

getGroupCount in interface GroupByHash

appendValuesTo

public void appendValuesTo(int groupId,
                           PageBuilder pageBuilder,
                           int outputChannelOffset)

Specified by:

appendValuesTo in interface GroupByHash

addPage

public Work<?> addPage(Page page)

Specified by:

addPage in interface GroupByHash

getGroupIds

public Work<GroupByIdBlock> getGroupIds(Page page)

Specified by:

getGroupIds in interface GroupByHash

contains

public boolean contains(int position,
                        Page page,
                        int[] hashChannels)

Specified by:

contains in interface GroupByHash

contains

public boolean contains(int position,
                        Page page,
                        int[] hashChannels,
                        long rawHash)

Specified by:

contains in interface GroupByHash

getCapacity

public int getCapacity()

Specified by:

getCapacity in interface GroupByHash