Package io.trino.operator.aggregation

Class AggregationMask

java.lang.Object

io.trino.operator.aggregation.AggregationMask

public final class AggregationMask
extends Object

Method Summary

Modifier and Type	Method	Description
void	applyMaskBlock(Block maskBlock)
static AggregationMask	createSelectAll(int positionCount)
static AggregationMask	createSelectedPositions(int positionCount, int[] selectedPositions, int selectedPositionCount)	Creates a mask with the given selected positions.
static AggregationMask	createSelectNone(int positionCount)
Page	filterPage(Page page)
int	getPositionCount()
int	getSelectedPositionCount()	Do not use this to filter a page, as the underlying array can change, and this will change the page after the filtering.
int[]	getSelectedPositions()
boolean	isSelectAll()
boolean	isSelectNone()
void	reset(int positionCount)
void	unselectNullPositions(Block block)

Methods inherited from class java.lang.Object

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

Method Details

createSelectNone

public static AggregationMask createSelectNone(int positionCount)

createSelectAll

public static AggregationMask createSelectAll(int positionCount)

createSelectedPositions

public static AggregationMask createSelectedPositions(int positionCount,
 int[] selectedPositions,
 int selectedPositionCount)

Creates a mask with the given selected positions. Selected positions must be sorted in ascending order.

reset

public void reset(int positionCount)

getPositionCount

public int getPositionCount()

isSelectAll

public boolean isSelectAll()

isSelectNone

public boolean isSelectNone()

filterPage

public Page filterPage(Page page)

getSelectedPositionCount

public int getSelectedPositionCount()

Do not use this to filter a page, as the underlying array can change, and this will change the page after the filtering.

getSelectedPositions

public int[] getSelectedPositions()

unselectNullPositions

public void unselectNullPositions(Block block)

applyMaskBlock

public void applyMaskBlock(@Nullable
 Block maskBlock)