damage.scala

trait Queries {
  type K

  trait Query {
    def from(k: K): Query
  }
  
  def select(where: String) = Select(where)
  def scan() = Scan()

  case class Select(where: String, private val from: Option[K] = None) {
    def from(k: K): Select = copy(from=Some(k))
  }
  case class Scan(private val from: Option[K] = None) {
    def from(k: K): Scan = copy(from=Some(k))
  }
}

case class Table[K, V](name: String) extends Queries

object Foo {
  val table = Table[String, Int]("aTable")

  val q = table.scan()
  val next = Some("x")
  
  val f1 = next.map(q.from)
  val f2 = next.map(q.from _)
  val f3 = next.map(q.from(_))
}