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javascalareflectiontypestypesafe-config

get java class for type tag of Scala case class

Using the type safe configuration and configs ("com.github.kxbmap" %% "configs" % "0.4.4",) library

def loadConfiguration[T <: Product: TypeTag]: T = {
    import configs.syntax._
    val conf = ConfigFactory.load
    conf.get[MyCaseClass]

should load the config, but fails as T is not a class. How can I actually transform T to fit for configs as a java class?

Solution

  • I'd suggest simply replacing TypeTag with ClassTag since you aren't using the TypeTag. And if you were, you could combine them: T <: Product : TypeTag : ClassTag] or use this solution: https://stackoverflow.com/a/18730004/9204

    From the question I assumed "configs" could work given a Java Class object (or a ClassTag wrapping one). But after checking the documentation I see that it doesn't, so the above isn't relevant.

    Instead you should use

    def loadConfiguration[T : Configs]: T = ...