Hi,
I am playing around with Java 8 and Akka.
In Scala I liked to use currying in some scenarios in combination with Akka
Props factory methods.
I tried to use a similar approach with classes from the new
java.util.function package and would be interested to know if there are
better approaches to achieve currying with Java.
Example:
Scala:
object ActorB {
def props (externalDependency: ExternalDependency) () =
Props(new ActorB(externalDependency))
}
class ActorA(actorBProps: () => Props) extends Actor {
val actorB = context.actorOf(actorBProps(), "actorB");
...
}
Bootstrap {
val actorBProps = ActorB.props(externalDependency)
system.actorOf(ActorA.props(actorBProps));
}
Java 8:
ActorB {
public static Function<ExternalDependency, Supplier<Props>> props() {
return x -> () -> Props.create(ActorB.class, () -> new ActorB(x));
}
...
}
ActorA {
public static Function<Supplier<Props>, Supplier<Props>> props() {
return p -> () -> Props.create(ActorA.class, () -> new ActorA(p));
}
ActorA(Supplier<Props> props) {
//create actorB
ActorRef actorB = context.actorOf(props.get(), "actorB");
}
...
}
Bootstrap {
Supplier<Props> actorBProps = ActorB.props().apply(externalDependency);
system.actorOf(ActorA.props().appyl(actorBProps), "ActorA");
}
Looking forward to get some feedback.
Thanks
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