Package com.google.common.util.concurrent

Interface AsyncFunction<I,O>

Functional Interface:

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

@GwtCompatible

public interface AsyncFunction<I,O>

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>	I input)	Returns an output Future to use in place of the given input.

Method Detail

apply

 I input)
                   throws 

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

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

Throws: