Ciklas cikle

gistfile1.scala

case class Request(valid: Boolean, impressions: Seq[Impression])
case class Impression(rules: Seq[Rule])
case class Rule(valid: Boolean)

case class Bid(money: Double)

// generate some random requests
val requests = Vector.fill(5) {
  Request(
    scala.util.Random.nextBoolean,
    Vector.fill(3) {
      Impression(
        Vector.fill(2) {
          Rule(scala.util.Random.nextBoolean)
        }
      )
    }
  )
}

// `for` in scala is just a sugar for flatMap and filter.
val processed = for {
  request <- requests.filter(_.valid == true)
  impression <- request.impressions
  rule <- impression.rules
  if rule.valid
} yield {
  Bid(123)
}

println(s"Processed valid requests $processed")