Scala-Java interoperability: is passing a Java function to Scala as a higher-order function possible?

[Denis Papathanasiou]

I have a project with two modules, one in Scala, and the other in Java.

I need the Java module because it makes a call to an internal data store
(using home-brewed libraries) that would be difficult to replicate
in Scala.

But I prefer the Scala module to handle the concurrency that calls to
the data store involve.

So while I cannot make the data store queries directly in Scala (which
would have been ideal), I would like a simple way of passing the Java
query as a higher-order function to my Scala module.

Is this possible? I do have Java 8 at my disposal for the Java module.

[Seth Tisue]

scala.runtime.AbstractFunctionN is your friend. on Java 8, https://github.com/scala/scala-java8-compat is your friend. see http://stackoverflow.com/a/8380694/86485

[Denis Papathanasiou]

Terrific, this is exactly what I was looking for, thank you!