Module dev.mccue.guava.concurrent

Package dev.mccue.guava.concurrent

Interface AsyncFunction<I extends @Nullable Object,O extends @Nullable Object>

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface AsyncFunction<I extends @Nullable Object,O extends @Nullable Object>

Transforms a value, possibly asynchronously. For an example usage and more information, see Futures#transformAsync(ListenableFuture, AsyncFunction, Executor).

Since:

11.0

Author:

Chris Povirk

Method Summary

Modifier and Type	Method	Description
ListenableFuture<O>	apply(I input)	Returns an output Future to use in place of the given input.

Method Details

apply

ListenableFuture<O> apply(I input)
                   throws Exception

Returns an output Future to use in place of the given input. The output Future need not be Future#isDone done, making AsyncFunction suitable for asynchronous derivations.

Throwing an exception from this method is equivalent to returning a failing Future.

Throws:

Exception