Package io.trino.operator.unnest

Class MapUnnester

java.lang.Object

io.trino.operator.unnest.MapUnnester

All Implemented Interfaces:

Unnester

public class MapUnnester
extends Object
implements Unnester

Constructor Summary

Constructors

Constructor	Description
MapUnnester()

Method Summary

Modifier and Type	Method	Description
Block[]	buildOutputBlocks(int[] outputEntriesPerPosition, int startPosition, int inputBatchSize, int outputRowCount)	Build the output blocks for the current batch for this unnester.
int	getChannelCount()
int[]	getOutputEntriesPerPosition()	Return a vector with the number of entries for each position of the block to be unnested.
long	getRetainedSizeInBytes()
void	resetInput(Block block)

Methods inherited from class java.lang.Object

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

Constructor Details

MapUnnester

public MapUnnester()

Method Details

getChannelCount

public int getChannelCount()

Specified by:

getChannelCount in interface Unnester

resetInput

public void resetInput(Block block)

Specified by:

resetInput in interface Unnester

getOutputEntriesPerPosition

public int[] getOutputEntriesPerPosition()

Description copied from interface: Unnester

Return a vector with the number of entries for each position of the block to be unnested.

Specified by:

getOutputEntriesPerPosition in interface Unnester

buildOutputBlocks

public Block[] buildOutputBlocks(int[] outputEntriesPerPosition,
 int startPosition,
 int inputBatchSize,
 int outputRowCount)

Description copied from interface: Unnester

Build the output blocks for the current batch for this unnester.

Specified by:

buildOutputBlocks in interface Unnester

Parameters:

outputEntriesPerPosition - A vector that holds the max unnested row count for each position of all blocks to be unnested.

startPosition - The start input position of this batch.

inputBatchSize - The number of input rows to be processed in this batch.

outputRowCount - The total output row count for this batch after the unnest is done.

getRetainedSizeInBytes

public long getRetainedSizeInBytes()

Specified by:

getRetainedSizeInBytes in interface Unnester