Scala iterable and java iterable

Question

I'm working on a java lib in scala.

I got something like this:

def myFunc(): Thing[Iterable[T]] = {
  // call java lib for the result
  ...
  javaResult  // Problem: it's Thing[java.lang.Iterable[T]]
}

So you see the problem is that the return type of the java thing is Thing[java.lang.Iterable[T]]. I've tried importing scala.collection.JavaConverters._ but that doesn't work. Note that I don't have access to the java lib and I'm not able to extract that iterable then reconstruct a Thing object with a scala one.

I can annotate the return type as java.lang.Iterable but as scala and java are designed to be work together, I'm wondering if there's some way to solve this problem elegantly?

You cannot solve this, without specifics about `Thing`. If its a monad (or a monad-like structure), just call `map(_.asScala)` on it. — gzm0, Jan 04 '15 at 23:55
Nitpick: Scala is designed to work with Java, not vice versa ;) — Chris Martin, Jan 05 '15 at 00:05

score 0 · Accepted Answer · edited Jan 05 '15 at 00:04

0

"Designed to work together" means exactly that you can return Thing[java.lang.Iterable[T]]. It does look like it is your only option.

edited Jan 05 '15 at 00:04

answered Jan 04 '15 at 23:58

Dima

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Scala iterable and java iterable

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