sirius.kernel.async

Interface CompletionHandler<V>

Type Parameters:

V - the type of the expected value to be computed by the Promise

public interface CompletionHandler<V>

Handler which can be attached to instances of Promise to be notified once a value is available or when the computation failed.

Method Summary

Modifier and Type	Method and Description
void	onFailure(Throwable throwable) Invoked if the promise is fails with the given throwable.
void	onSuccess(V value) Invoked if the promise is successfully completed with the given value.

Method Detail

onSuccess

void onSuccess(@Nullable
               V value)
        throws Exception

Invoked if the promise is successfully completed with the given value.

Parameters:

value - the computed value of the promise.

Throws:

Exception - simplifies exception handling as each error is either passed on to the next promise or logged via Exceptions.handle()

onFailure

void onFailure(@Nonnull
               Throwable throwable)
        throws Exception

Invoked if the promise is fails with the given throwable.

Parameters:

throwable - the thrown error which occurred while computing the promised value.

Throws:

Exception - simplifies exception handling as each error is either passed on to the next promise or logged via Exceptions.handle()