validateanyProduct.scala

validateanyProduct.scala

def validateProduct[T <: Product](product: T): Seq[String] = product.productIterator.flatMap{value => value match {
  case null => Seq("null attributes are not allowed for " + product)
  case string: String if (string.isEmpty) => Seq("Empty strings are not allowed for " + product)
  case innerProduct: Product => validateProduct(innerProduct)
  case _ => Seq()
}}.toSeq

Slightly cleaner, perhaps.

def validateProduct[T <: Product](product: T): Seq[String] = product.productIterator.toSeq collect {
  case null => "null attributes are not allowed for " + product
  case string: String if (string.isEmpty) => "Empty strings are not allowed for " + product
  case innerProduct: Product => validateProduct(innerProduct)
}

Yeah, that's much nicer.