[javaee-spec users] Re: CompletableFuture Usage in the Platfom vs CDI

From: Josh Juneau <>
Date: Tue, 8 Mar 2016 06:41:56 -0600


I am in agreement with you. I agree that CompleteableFuture seems to make
more sense for asynchronous events than CompletionStage. Given that it is
widely acceptable throughout the platform, and the naming aligns more
closely with asynchronous activity...I think CompleteableFuture would be a
more consistent and standardized choice.


Josh Juneau

On Mon, Mar 7, 2016 at 6:40 PM, Reza Rahman <> wrote:

> The CDI EG is incorporating the concept of CompletableFuture into
> asynchronous events. Unfortunately for reasons I really don't see as good
> they are using it's superinterface CompletionStage instead of
> CompletableFuture.
> I think this is a big ease-of-use mistake as CompletableFuture is designed
> to be the end user high level gateway API while CompletionStage is mostly
> as SPI intended for framework writers.
> Given that the CompletableFuture concept is pretty widely applicable
> throughout the platform I think there is a need for consistency, oversight
> and guidance from the platform expert group. Otherwise I fear less than
> ideal ad-hoc decisions might be made in this case for CDI and possibly
> others down the line.
> What do you think?