You’ll have to block then.
Consider using Actors instead if you can.
— k
On 17 November 2014 at 13:51:29, Syd Gillani (s.zeeshangill...@gmail.com) wrote:
Alright, but I would like to send the result to an API ( a method in an
external class). Is there any way for it. Cheers
Syd
On Monday, 17 November 2014 12:35:42 UTC+1, Konrad Malawski wrote:
Have you looked into our pipeTo pattern? It allows to send the result of a
Future to an Actor, without having to block on the result:
import static akka.pattern.Patterns.pipe;
final ActorRef alice = ???;
final Future<Object> future = ???;
pipe(future, ec).to(alice);
Alice can receive the value and do things with it.
More info in the docs:
http://doc.akka.io/docs/akka/2.3.7/java/untyped-actors.html#Ask__Send-And-Receive-Future
-- k
On Mon, Nov 17, 2014 at 12:22 PM, Syd Gillani <s.zeesha...@gmail.com> wrote:
Thanks Konrad,
The issue with the mapping is that I won't be able to send the results to an
external class -- that is exactly my case. I need to send the result of the
future to an external class which will perform some other computation and so.
I knew about the await method, but as It is described in the documentation (not
a preferred approach ), so I was hesitant to use it. Cheers
Syd
On Monday, 17 November 2014 12:10:16 UTC+1, Konrad Malawski wrote:
Hi Syd,
your code samples are not valid Java (well, the first one could be if testVar
would be a field, but that's unsafe instead maybe use `AtomicReference` and
`set` it from the completion?).
OnComplete has a `void` method so you cannot return from it.
Instead of taking things out of the future like this you can either:
1) keep mapping (transfroming the value):
future.map(new Function1<Object, Object>(){
@Override public Object apply(Object v1) {
return null;
}
}, ec);
never getting out of this transformation - this way you can chain all
transformations you need.
2) Await on the result of the future (we discourage this) as it will block the
thread that you're calling await from:
Future<Object> future = null;
Object o = scala.concurrent.Await.result(future, Duration.apply(100,
TimeUnit.DAYS))
Hope this helps, happy hakkionmg!
On Mon, Nov 17, 2014 at 11:36 AM, Syd Gillani <s.zeesha...@gmail.com> wrote:
Hi,
I wanted to ask if there is any way to map the internal variables to the
external java ones. For instance, for the following method
String testVar=null;
future.onComplete(new OnComplete<Object>(){
public void onComplete(Throwable t, Object result){
testVar=(String) result;
}
}, ec);
I have tried the following method to get the results by calling onSuccess
future.onComplete(new OnComplete<Object>(){
public void onComplete(Throwable t, Object result){
return result;
}
}, ec);
future.onSuccess(new Result<String>(), ec);
However I am kept on getting the error (cannot cast the Result class to a
partial function ). Cheers
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Cheers,
Konrad 'ktoso' Malawski
hAkker @ Typesafe
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Konrad 'ktoso' Malawski
hAkker @ Typesafe
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hAkker @ typesafe
http://akka.io
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