org.apache.flink.streaming.api.functions.async

Interface ResultFuture<OUT>

Type Parameters:

OUT - Output type

@PublicEvolving
public interface ResultFuture<OUT>

ResultFuture collects data / error in user codes while processing async i/o.

Method Summary

Modifier and Type	Method and Description
void	complete(Collection<OUT> result) Completes the result future with a collection of result objects.
void	completeExceptionally(Throwable error) Completes the result future exceptionally with an exception.

Method Detail

complete

void complete(Collection<OUT> result)

Completes the result future with a collection of result objects.

Note that it should be called for exactly one time in the user code. Calling this function for multiple times will cause data lose.

Put all results in a Collection and then emit output.

Parameters:

result - A list of results.

completeExceptionally

void completeExceptionally(Throwable error)

Completes the result future exceptionally with an exception.

Parameters:

error - A Throwable object.