Package io.trino.operator.output

Interface PositionsAppender

All Known Implementing Classes:

RowPositionsAppender

public interface PositionsAppender

Method Summary

Modifier and Type	Method	Description
void	append(int position, ValueBlock source)	Appends single position.
void	append(it.unimi.dsi.fastutil.ints.IntArrayList positions, ValueBlock source)
void	appendRle(ValueBlock value, int rlePositionCount)	Appends the specified value positionCount times.
Block	build()	Creates the block from the appender data.
long	getRetainedSizeInBytes()	Returns number of bytes retained by this instance in memory including over-allocations.
long	getSizeInBytes()	Returns the size of memory in bytes used by this appender.
void	reset()	Reset this appender without creating a block.

Method Details

append

void append(it.unimi.dsi.fastutil.ints.IntArrayList positions,
 ValueBlock source)

appendRle

void appendRle(ValueBlock value,
 int rlePositionCount)

Appends the specified value positionCount times. The result is the same as with using append(IntArrayList, ValueBlock) with a position list [0...positionCount -1] but with possible performance optimizations.

append

void append(int position,
 ValueBlock source)

Appends single position. The implementation must be conceptually equal to append(IntArrayList.wrap(new int[] {position}), source) but may be optimized. Caller should avoid using this method if append(IntArrayList, ValueBlock) can be used as appending positions one by one can be significantly slower and may not support features like pushing RLE through the appender.

build

Block build()

Creates the block from the appender data. After this, appender is reset to the initial state, and it is ready to build a new block.

reset

void reset()

Reset this appender without creating a block.

getRetainedSizeInBytes

long getRetainedSizeInBytes()

Returns number of bytes retained by this instance in memory including over-allocations.

getSizeInBytes

long getSizeInBytes()

Returns the size of memory in bytes used by this appender.