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@Beta public interface AsyncFunction<I,O>
Transforms a value, possibly asynchronously. For an example usage and more
information, see Futures.transform(ListenableFuture, AsyncFunction)
.
Method Summary | |
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ListenableFuture<O> |
apply(I input)
Returns an output Future to use in place of the given input . |
Method Detail |
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ListenableFuture<O> apply(I input) throws java.lang.Exception
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
.
java.lang.Exception
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