com.facebook.presto.operator

Interface OperatorFactory

All Known Subinterfaces:

JoinOperatorFactory, SourceOperatorFactory

All Known Implementing Classes:

AggregationOperator.AggregationOperatorFactory, AssignUniqueIdOperator.AssignUniqueIdOperatorFactory, DeleteOperator.DeleteOperatorFactory, DevNullOperator.DevNullOperatorFactory, DistinctLimitOperator.DistinctLimitOperatorFactory, DynamicFilterSourceOperator.DynamicFilterSourceOperatorFactory, EnforceSingleRowOperator.EnforceSingleRowOperatorFactory, ExchangeOperator.ExchangeOperatorFactory, ExplainAnalyzeOperator.ExplainAnalyzeOperatorFactory, FilterAndProjectOperator.FilterAndProjectOperatorFactory, GroupIdOperator.GroupIdOperatorFactory, HashAggregationOperator.HashAggregationOperatorFactory, HashBuilderOperator.HashBuilderOperatorFactory, HashSemiJoinOperator.HashSemiJoinOperatorFactory, IndexSourceOperator.IndexSourceOperatorFactory, LimitOperator.LimitOperatorFactory, LocalExchangeSinkOperator.LocalExchangeSinkOperatorFactory, LocalExchangeSourceOperator.LocalExchangeSourceOperatorFactory, LocalMergeSourceOperator.LocalMergeSourceOperatorFactory, LookupJoinOperatorFactory, LookupOuterOperator.LookupOuterOperatorFactory, MarkDistinctOperator.MarkDistinctOperatorFactory, MergeOperator.MergeOperatorFactory, MetadataDeleteOperator.MetadataDeleteOperatorFactory, NestedLoopBuildOperator.NestedLoopBuildOperatorFactory, NestedLoopJoinOperator.NestedLoopJoinOperatorFactory, NullOutputOperator.NullOutputOperatorFactory, OptimizedPartitionedOutputOperator.OptimizedPartitionedOutputOperatorFactory, OrderByOperator.OrderByOperatorFactory, PageBufferOperator.PageBufferOperatorFactory, PageConsumerOperator.PageConsumerOperatorFactory, PagesIndexBuilderOperator.PagesIndexBuilderOperatorFactory, PartitionedOutputOperator.PartitionedOutputOperatorFactory, RemoteProjectOperator.RemoteProjectOperatorFactory, RowNumberOperator.RowNumberOperatorFactory, ScanFilterAndProjectOperator.ScanFilterAndProjectOperatorFactory, SetBuilderOperator.SetBuilderOperatorFactory, SpatialIndexBuilderOperator.SpatialIndexBuilderOperatorFactory, SpatialJoinOperator.SpatialJoinOperatorFactory, StatisticsWriterOperator.StatisticsWriterOperatorFactory, StreamingAggregationOperator.StreamingAggregationOperatorFactory, TableFinishOperator.TableFinishOperatorFactory, TableScanOperator.TableScanOperatorFactory, TableWriterMergeOperator.TableWriterMergeOperatorFactory, TableWriterOperator.TableWriterOperatorFactory, TaskOutputOperator.TaskOutputOperatorFactory, TopNOperator.TopNOperatorFactory, TopNRowNumberOperator.TopNRowNumberOperatorFactory, UnnestOperator.UnnestOperatorFactory, ValuesOperator.ValuesOperatorFactory, WindowOperator.WindowOperatorFactory

public interface OperatorFactory

Method Summary

Modifier and Type	Method and Description
Operator	createOperator(DriverContext driverContext)
OperatorFactory	duplicate()
void	noMoreOperators() Declare that createOperator will not be called any more and release any resources associated with this factory.
default void	noMoreOperators(Lifespan lifespan) Declare that createOperator will not be called any more for the specified Lifespan, and release any resources associated with this factory.

Method Detail

createOperator

Operator createOperator(DriverContext driverContext)

noMoreOperators

void noMoreOperators()

Declare that createOperator will not be called any more and release any resources associated with this factory.

This method will be called only once. Implementation doesn't need to worry about duplicate invocations.

It is guaranteed that this will only be invoked after noMoreOperators(Lifespan) has been invoked for all applicable driver groups.

noMoreOperators

default void noMoreOperators(Lifespan lifespan)

Declare that createOperator will not be called any more for the specified Lifespan, and release any resources associated with this factory.

This method will be called only once for each Lifespan. Implementation doesn't need to worry about duplicate invocations.

It is guaranteed that this method will be invoked for all applicable driver groups before noMoreOperators() is invoked.

duplicate

OperatorFactory duplicate()