Package io.trino.operator

Class MultiChannelGroupByHash

java.lang.Object

io.trino.operator.MultiChannelGroupByHash

All Implemented Interfaces:

GroupByHash

public class MultiChannelGroupByHash
extends Object
implements GroupByHash

Constructor Summary

Constructors

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

Method Summary

Modifier and Type	Method	Description
Work<?>	addPage(Page page)
void	appendValuesTo(int groupId, PageBuilder pageBuilder)
boolean	contains(int position, Page page, int[] hashChannels)
boolean	contains(int position, Page page, int[] hashChannels, long rawHash)
int	getCapacity()
long	getEstimatedSize()
int	getGroupCount()
Work<GroupByIdBlock>	getGroupIds(Page page)	The order of new group ids need to be the same as the order of incoming rows, i.e.
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

Constructor Details

MultiChannelGroupByHash

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

Method Details

getRawHash

public long getRawHash(int groupId)

Specified by:

getRawHash in interface GroupByHash

getEstimatedSize

public long getEstimatedSize()

Specified by:

getEstimatedSize 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)

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)

Description copied from interface: GroupByHash

The order of new group ids need to be the same as the order of incoming rows, i.e. new group ids should be assigned in rows iteration order Example: rows: A B C B D A E group ids: 1 2 3 2 4 1 5

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