Serialize.scala

class StringMapCubbie[T](val m: mutable.Map[String,T]) extends Cubbie {
  var akeys : Seq[String] = null
  var avalues: Seq[T] = null
  setMap(new mutable.Map[String, Any] {
    override def update(key: String, value: Any): Unit = {
      if (key == "keys") {
        akeys = value.asInstanceOf[Traversable[String]].toSeq
      } else if (key == "values") {
        assert(keys != null)
        avalues = value.asInstanceOf[Traversable[T]].toSeq
        for (i <- 0 until keys.size) {
          m(akeys(i)) = avalues(i)
        }
      }
    }
    def += (kv: (String, Any)): this.type = { update(kv._1, kv._2); this }
    def -= (key: String): this.type = sys.error("Can't remove slots from cubbie map!")
    def get(key: String): Option[Any] = if (key == "keys") Some(m.keys.toTraversable) else if (key == "values") Some(m.values.toTraversable) else None
    def iterator: Iterator[(String, Any)] = Seq(("keys", get("keys")), ("values", get("values"))).iterator
  })
}