org.apache.flink.datastream.api.function

Interface OneInputStreamProcessFunction<IN,OUT>

All Superinterfaces:

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

@Experimental
public interface OneInputStreamProcessFunction<IN,OUT>
extends ProcessFunction

This contains all logical related to process records from single input.

Method Summary

Modifier and Type	Method and Description
default void	endInput(NonPartitionedContext<OUT> ctx) This is a life-cycle method indicates that this function will no longer receive any data from the input.
default void	onProcessingTimer(long timestamp, Collector<OUT> output, PartitionedContext ctx) Callback for processing timer.
void	processRecord(IN record, Collector<OUT> output, PartitionedContext ctx) Process record and emit data through Collector.

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

close, open, usesStates

Method Detail

processRecord

void processRecord(IN record,
                   Collector<OUT> output,
                   PartitionedContext ctx)
            throws Exception

Process record and emit data through Collector.

Parameters:

record - to process.

output - to emit processed records.

ctx - runtime context in which this function is executed.

Throws:

Exception

endInput

default void endInput(NonPartitionedContext<OUT> ctx)

This is a life-cycle method indicates that this function will no longer receive any data from the input.

Parameters:

ctx - the context in which this function is executed.

onProcessingTimer

default void onProcessingTimer(long timestamp,
                               Collector<OUT> output,
                               PartitionedContext ctx)

Callback for processing timer.

Parameters:

timestamp - when this callback is triggered.

output - to emit record.

ctx - runtime context in which this function is executed.