Package io.trino.operator.aggregation.listagg

Class AbstractListaggAggregationState

java.lang.Object

io.trino.operator.aggregation.listagg.AbstractListaggAggregationState

All Implemented Interfaces:

ListaggAggregationState, AccumulatorState

Direct Known Subclasses:

GroupListaggAggregationState, SingleListaggAggregationState

public abstract class AbstractListaggAggregationState
extends Object
implements ListaggAggregationState

Field Summary

Fields

Modifier and Type	Field	Description
protected final List<byte[]>	closedRecordGroups	The fixed chunk contains an array of records.
protected byte[]	openRecordGroup
protected static final int	RECORDS_PER_GROUP
protected static final int	RECORDS_PER_GROUP_MASK
protected final int	recordSize

Constructor Summary

Constructors

Constructor	Description
AbstractListaggAggregationState(int extraRecordBytes)
AbstractListaggAggregationState(AbstractListaggAggregationState state)

Method Summary

Modifier and Type	Method	Description
void	add(ValueBlock block, int position)
long	getEstimatedSize()
protected final int	getRecordOffset(long index)
protected final byte[]	getRecords(long index)
final void	initialize(io.airlift.slice.Slice separator, boolean overflowError, io.airlift.slice.Slice overflowFiller, boolean showOverflowEntryCount)
void	merge(ListaggAggregationState other)
void	serialize(RowBlockBuilder rowBlockBuilder)
protected final long	size()
protected final boolean	writeEntry(byte[] records, int recordOffset, io.airlift.slice.SliceOutput out, int totalEntryCount, int emittedCount)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.trino.spi.function.AccumulatorState

copy

Methods inherited from interface io.trino.operator.aggregation.listagg.ListaggAggregationState

write

Field Details

RECORDS_PER_GROUP

protected static final int RECORDS_PER_GROUP

See Also:

• Constant Field Values

RECORDS_PER_GROUP_MASK

protected static final int RECORDS_PER_GROUP_MASK

See Also:

• Constant Field Values

recordSize

protected final int recordSize

closedRecordGroups

protected final List<byte[]> closedRecordGroups

The fixed chunk contains an array of records. The records are laid out as follows:

• 12 byte pointer to variable width data
• 8 byte next index (only present if hasNextIndex is true)

The pointer is placed first to simplify the offset calculations for variable with code. This chunk contains capacity + 1 records. The extra record is used for the swap operation.

openRecordGroup

protected byte[] openRecordGroup

Constructor Details

AbstractListaggAggregationState

public AbstractListaggAggregationState(int extraRecordBytes)

AbstractListaggAggregationState

public AbstractListaggAggregationState(AbstractListaggAggregationState state)

Method Details

getEstimatedSize

public long getEstimatedSize()

Specified by:

getEstimatedSize in interface AccumulatorState

size

protected final long size()

initialize

public final void initialize(io.airlift.slice.Slice separator,
 boolean overflowError,
 io.airlift.slice.Slice overflowFiller,
 boolean showOverflowEntryCount)

Specified by:

initialize in interface ListaggAggregationState

add

public void add(ValueBlock block,
 int position)

Specified by:

add in interface ListaggAggregationState

serialize

public void serialize(RowBlockBuilder rowBlockBuilder)

Specified by:

serialize in interface ListaggAggregationState

merge

public void merge(ListaggAggregationState other)

Specified by:

merge in interface ListaggAggregationState

writeEntry

protected final boolean writeEntry(byte[] records,
 int recordOffset,
 io.airlift.slice.SliceOutput out,
 int totalEntryCount,
 int emittedCount)

getRecords

protected final byte[] getRecords(long index)

getRecordOffset

protected final int getRecordOffset(long index)