CompletableFuture

[Doug Lea]

On 11/28/12 14:55, David M. Lloyd wrote:
> Yes, but it only allows for one dependency per task.  It makes more sense to
> turn it around and thus be able to do:
>
> WhateverFuture<T> x = Task.of(e ->
> foo(e)).dependsOn(future1).dependsOn(future2).release();
>

Here's how to make trees/dags:

   t1 = new CompletableFuture();
   t2 = t1.then(fun1);
   t3 = t1.then(fun2);
   t4 = t2.then(fun3);
   t5 = new CompletableFuture();
   t6 = t1.and(t3, fun4);

This gives you (hoping the ascii-arg makes it through):


    / -> t2 -> t4
t1
    \ -> t3
          \
t5 -----> & t6

Does that help?

-Doug