Package io.prestosql.operator

Class PagesHash

java.lang.Object

io.prestosql.operator.PagesHash

public final class PagesHash
extends Object

Constructor Summary

Constructors

Constructor	Description
PagesHash(it.unimi.dsi.fastutil.longs.LongArrayList addresses, PagesHashStrategy pagesHashStrategy, PositionLinks.FactoryBuilder positionLinks)

Method Summary

Modifier and Type	Method	Description
void	appendTo(long position, PageBuilder pageBuilder, int outputChannelOffset)
int	getAddressIndex(int position, Page hashChannelsPage)
int	getAddressIndex(int rightPosition, Page hashChannelsPage, long rawHash)
int	getChannelCount()
double	getExpectedHashCollisions()
long	getHashCollisions()
long	getInMemorySizeInBytes()
int	getPositionCount()

Methods inherited from class java.lang.Object

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

Constructor Detail

PagesHash

public PagesHash(it.unimi.dsi.fastutil.longs.LongArrayList addresses,
                 PagesHashStrategy pagesHashStrategy,
                 PositionLinks.FactoryBuilder positionLinks)

Method Detail

getChannelCount

public final int getChannelCount()

getPositionCount

public int getPositionCount()

getInMemorySizeInBytes

public long getInMemorySizeInBytes()

getHashCollisions

public long getHashCollisions()

getExpectedHashCollisions

public double getExpectedHashCollisions()

getAddressIndex

public int getAddressIndex(int position,
                           Page hashChannelsPage)

getAddressIndex

public int getAddressIndex(int rightPosition,
                           Page hashChannelsPage,
                           long rawHash)

appendTo

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