AsyncFunction

com.google.common.util.concurrent

Interface AsyncFunction<I,O>

```
public interface AsyncFunction<I,O>
```
Transforms a value, possibly asynchronously. For an example usage and more information, see Futures.transform(ListenableFuture, AsyncFunction).

Since:

11.0

Method Summary

All Methods

Instance Methods

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

- Method Detail
  - 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 done, making AsyncFunction suitable for asynchronous derivations.
    Throwing an exception from this method is equivalent to returning a failing Future.
    
    Throws:
    
    Exception