Package org.apache.flink.table.runtime.operators.aggregate.window

Class WindowAggOperatorBuilder

java.lang.Object

org.apache.flink.table.runtime.operators.aggregate.window.WindowAggOperatorBuilder

public class WindowAggOperatorBuilder
extends Object

The WindowAggOperatorBuilder is used to build a WindowAggOperator with SlicingWindowProcessor or a UnslicingWindowProcessor.

 WindowAggOperatorBuilder.builder()
   .inputType(inputType)
   .keyTypes(keyFieldTypes)
   .assigner(SliceAssigners.tumbling(rowtimeIndex, Duration.ofSeconds(5)))
   .aggregate(genAggsFunction), accTypes)
   .build();
 

or

 WindowAggOperatorBuilder.builder()
   .inputType(inputType)
   .keyTypes(keyFieldTypes)
   .assigner(UnsliceAssigners.session(rowtimeIndex, Duration.ofSeconds(5)))
   .aggregate(genAggsFunction), accTypes)
   .build();
 

Constructor Summary

Constructors

Constructor	Description
WindowAggOperatorBuilder()

Method Summary

Modifier and Type	Method	Description
WindowAggOperatorBuilder	aggregate(GeneratedNamespaceAggsHandleFunction<?> generatedAggregateFunction, AbstractRowDataSerializer<RowData> accSerializer)
WindowAggOperatorBuilder	assigner(WindowAssigner assigner)
WindowAggOperator<RowData,?>	build()
static WindowAggOperatorBuilder	builder()
WindowAggOperatorBuilder	countStarIndex(int indexOfCountStart)	Specify the index position of the COUNT(*) value in the accumulator buffer.
WindowAggOperatorBuilder	globalAggregate(GeneratedNamespaceAggsHandleFunction<?> localGeneratedAggregateFunction, GeneratedNamespaceAggsHandleFunction<?> globalGeneratedAggregateFunction, GeneratedNamespaceAggsHandleFunction<?> stateGeneratedAggregateFunction, AbstractRowDataSerializer<RowData> accSerializer)
WindowAggOperatorBuilder	inputSerializer(AbstractRowDataSerializer<RowData> inputSerializer)
WindowAggOperatorBuilder	keySerializer(PagedTypeSerializer<RowData> keySerializer)
WindowAggOperatorBuilder	shiftTimeZone(ZoneId shiftTimeZone)

Methods inherited from class java.lang.Object

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

Constructor Detail

WindowAggOperatorBuilder

public WindowAggOperatorBuilder()

Method Detail

builder

public static WindowAggOperatorBuilder builder()

inputSerializer

public WindowAggOperatorBuilder inputSerializer(AbstractRowDataSerializer<RowData> inputSerializer)

shiftTimeZone

public WindowAggOperatorBuilder shiftTimeZone(ZoneId shiftTimeZone)

keySerializer

public WindowAggOperatorBuilder keySerializer(PagedTypeSerializer<RowData> keySerializer)

assigner

public WindowAggOperatorBuilder assigner(WindowAssigner assigner)

aggregate

public WindowAggOperatorBuilder aggregate(GeneratedNamespaceAggsHandleFunction<?> generatedAggregateFunction,
                                          AbstractRowDataSerializer<RowData> accSerializer)

globalAggregate

public WindowAggOperatorBuilder globalAggregate(GeneratedNamespaceAggsHandleFunction<?> localGeneratedAggregateFunction,
                                                GeneratedNamespaceAggsHandleFunction<?> globalGeneratedAggregateFunction,
                                                GeneratedNamespaceAggsHandleFunction<?> stateGeneratedAggregateFunction,
                                                AbstractRowDataSerializer<RowData> accSerializer)

countStarIndex

public WindowAggOperatorBuilder countStarIndex(int indexOfCountStart)

Specify the index position of the COUNT(*) value in the accumulator buffer. This is only required for Hopping windows which uses this to determine whether the window is empty and then decide whether to register timer for the next window.

See Also:

SliceAssigners.HoppingSliceAssigner.nextTriggerWindow(long, Supplier)

build

public WindowAggOperator<RowData,?> build()