Package io.trino.operator.join

Class JoinHash

java.lang.Object

io.trino.operator.join.JoinHash

All Implemented Interfaces:

LookupSource, Closeable, AutoCloseable

public final class JoinHash
extends Object
implements LookupSource

Constructor Summary

Constructors

Constructor	Description
JoinHash(PagesHash pagesHash, Optional<JoinFilterFunction> filterFunction, Optional<PositionLinks> positionLinks, long pageInstancesRetainedSizeInBytes)

Method Summary

Modifier and Type	Method	Description
void	appendTo(long position, PageBuilder pageBuilder, int outputChannelOffset)
void	close()
long	getInMemorySizeInBytes()
void	getJoinPosition(int[] positions, Page hashChannelsPage, Page allChannelsPage, long[] result)	The `result` array is global to the entire processed page, while the `positions` array may hold any number of selected positions from this page
void	getJoinPosition(int[] positions, Page hashChannelsPage, Page allChannelsPage, long[] rawHashes, long[] result)	The `rawHashes` and `result` arrays are global to the entire processed page (thus, the same size), while the `positions` array may hold any number of selected positions from this page
long	getJoinPosition(int position, Page hashChannelsPage, Page allChannelsPage)
long	getJoinPosition(int position, Page hashChannelsPage, Page allChannelsPage, long rawHash)
long	getJoinPositionCount()
long	getNextJoinPosition(long currentJoinPosition, int probePosition, Page allProbeChannelsPage)
boolean	isEmpty()
boolean	isJoinPositionEligible(long currentJoinPosition, int probePosition, Page allProbeChannelsPage)
long	joinPositionWithinPartition(long joinPosition)

Methods inherited from class java.lang.Object

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

Constructor Details

JoinHash

public JoinHash(PagesHash pagesHash,
 Optional<JoinFilterFunction> filterFunction,
 Optional<PositionLinks> positionLinks,
 long pageInstancesRetainedSizeInBytes)

Method Details

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface LookupSource

getJoinPositionCount

public long getJoinPositionCount()

Specified by:

getJoinPositionCount in interface LookupSource

getInMemorySizeInBytes

public long getInMemorySizeInBytes()

Specified by:

getInMemorySizeInBytes in interface LookupSource

joinPositionWithinPartition

public long joinPositionWithinPartition(long joinPosition)

Specified by:

joinPositionWithinPartition in interface LookupSource

getJoinPosition

public long getJoinPosition(int position,
 Page hashChannelsPage,
 Page allChannelsPage)

Specified by:

getJoinPosition in interface LookupSource

getJoinPosition

public long getJoinPosition(int position,
 Page hashChannelsPage,
 Page allChannelsPage,
 long rawHash)

Specified by:

getJoinPosition in interface LookupSource

getJoinPosition

public void getJoinPosition(int[] positions,
 Page hashChannelsPage,
 Page allChannelsPage,
 long[] rawHashes,
 long[] result)

Description copied from interface: LookupSource

The `rawHashes` and `result` arrays are global to the entire processed page (thus, the same size), while the `positions` array may hold any number of selected positions from this page

Specified by:

getJoinPosition in interface LookupSource

getJoinPosition

public void getJoinPosition(int[] positions,
 Page hashChannelsPage,
 Page allChannelsPage,
 long[] result)

Description copied from interface: LookupSource

The `result` array is global to the entire processed page, while the `positions` array may hold any number of selected positions from this page

Specified by:

getJoinPosition in interface LookupSource

getNextJoinPosition

public long getNextJoinPosition(long currentJoinPosition,
 int probePosition,
 Page allProbeChannelsPage)

Specified by:

getNextJoinPosition in interface LookupSource

isJoinPositionEligible

public boolean isJoinPositionEligible(long currentJoinPosition,
 int probePosition,
 Page allProbeChannelsPage)

Specified by:

isJoinPositionEligible in interface LookupSource

appendTo

public void appendTo(long position,
 PageBuilder pageBuilder,
 int outputChannelOffset)

Specified by:

appendTo in interface LookupSource

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface LookupSource