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scalatry-catchfunctor

Scala Try/Future, wrapping the exception in case of failure

Suppose I have a method def doSomething: String which can raise a DoSomethingException if something goes wrong.

If I write Try(doSomething), is there a simple way to map the exception without recovering it?

Basically, I want the failure to become a BusinessException caused by the DoSomethingException.

I know the code to do this is very simple, but isn't there any built-in operator to do so? It seems a very common operation but I can't find anything in the API.

Solution

  • You can use transform

    val t = Failure(new DoSomethingException)
val bt = t.transform(s => Success(s), e => Failure(new BusinessException))