Package org.apache.flink.datastream.api.extension.window.function

Interface TwoInputNonBroadcastWindowStreamProcessFunction<IN1,IN2,OUT>

Type Parameters:

IN1 - The type of the input1 value.

IN2 - The type of the input2 value.

OUT - The type of the output value.

All Superinterfaces:

org.apache.flink.api.common.functions.Function, ProcessFunction, Serializable, WindowProcessFunction

@Experimental
public interface TwoInputNonBroadcastWindowStreamProcessFunction<IN1,IN2,OUT>
extends WindowProcessFunction

A type of WindowProcessFunction for two input window processing, such as window-join.

Method Summary

Modifier and Type	Method	Description
default void	onClear(Collector<OUT> output, PartitionedContext<OUT> ctx, TwoInputWindowContext<IN1,IN2> windowContext)	Callback when a window is about to be cleaned up.
default void	onLateRecord1(IN1 record, Collector<OUT> output, PartitionedContext<OUT> ctx)	This method will be invoked when a record is received from input1 after the window has been cleaned.
default void	onLateRecord2(IN2 record, Collector<OUT> output, PartitionedContext<OUT> ctx)	This method will be invoked when a record is received from input2 after the window has been cleaned.
default void	onRecord1(IN1 record, Collector<OUT> output, PartitionedContext<OUT> ctx, TwoInputWindowContext<IN1,IN2> windowContext)	This method will be invoked when a record is received from input1.
default void	onRecord2(IN2 record, Collector<OUT> output, PartitionedContext<OUT> ctx, TwoInputWindowContext<IN1,IN2> windowContext)	This method will be invoked when a record is received from input2.
void	onTrigger(Collector<OUT> output, PartitionedContext<OUT> ctx, TwoInputWindowContext<IN1,IN2> windowContext)	This method will be invoked when the Window is triggered, you can obtain all the input records in the Window by TwoInputWindowContext.getAllRecords1() and TwoInputWindowContext.getAllRecords2().

Methods inherited from interface org.apache.flink.datastream.api.function.ProcessFunction

close, declareWatermarks, usesStates

Methods inherited from interface org.apache.flink.datastream.api.extension.window.function.WindowProcessFunction

useWindowStates

Method Details

onRecord1

default void onRecord1(IN1 record,
 Collector<OUT> output,
 PartitionedContext<OUT> ctx,
 TwoInputWindowContext<IN1,IN2> windowContext)
                throws Exception

This method will be invoked when a record is received from input1. Its default behaviors to store data in built-in window state by TwoInputWindowContext.putRecord1(IN1). If the user overrides this method, they have to take care of the input data themselves.

Throws:

Exception

onRecord2

default void onRecord2(IN2 record,
 Collector<OUT> output,
 PartitionedContext<OUT> ctx,
 TwoInputWindowContext<IN1,IN2> windowContext)
                throws Exception

This method will be invoked when a record is received from input2. Its default behaviors to store data in built-in window state by TwoInputWindowContext.putRecord2(IN2). If the user overrides this method, they have to take care of the input data themselves.

Throws:

Exception

onTrigger

void onTrigger(Collector<OUT> output,
 PartitionedContext<OUT> ctx,
 TwoInputWindowContext<IN1,IN2> windowContext)
        throws Exception

This method will be invoked when the Window is triggered, you can obtain all the input records in the Window by TwoInputWindowContext.getAllRecords1() and TwoInputWindowContext.getAllRecords2().

Throws:

Exception

onClear

default void onClear(Collector<OUT> output,
 PartitionedContext<OUT> ctx,
 TwoInputWindowContext<IN1,IN2> windowContext)
              throws Exception

Callback when a window is about to be cleaned up. It is the time to deletes any state in the windowContext when the Window expires (the event time or processing time passes its maxTimestamp + allowedLateness).

Throws:

Exception

onLateRecord1

default void onLateRecord1(IN1 record,
 Collector<OUT> output,
 PartitionedContext<OUT> ctx)
                    throws Exception

This method will be invoked when a record is received from input1 after the window has been cleaned.

Throws:

Exception

onLateRecord2

default void onLateRecord2(IN2 record,
 Collector<OUT> output,
 PartitionedContext<OUT> ctx)
                    throws Exception

This method will be invoked when a record is received from input2 after the window has been cleaned.

Throws:

Exception