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 Details

    • RECORDS_PER_GROUP

      protected static final int RECORDS_PER_GROUP
      See Also:

    • RECORDS_PER_GROUP_MASK

      protected static final int RECORDS_PER_GROUP_MASK
      See Also:

    • 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)