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@GwtCompatible public interface AsyncFunction<I extends @Nullable java.lang.Object,O extends @Nullable java.lang.Object>
Transforms a value, possibly asynchronously. For an example usage and more information, seeFutures.transformAsync(ListenableFuture, AsyncFunction, Executor)
.- Since:
- 11.0
- Author:
- Chris Povirk
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description ListenableFuture<O>
apply(I input)
Returns an outputFuture
to use in place of the giveninput
.
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Method Detail
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apply
ListenableFuture<O> apply(I input) throws java.lang.Exception
Returns an outputFuture
to use in place of the giveninput
. The outputFuture
need not be done, makingAsyncFunction
suitable for asynchronous derivations.Throwing an exception from this method is equivalent to returning a failing
Future
.- Throws:
java.lang.Exception
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