object Main {
  def main(args: Array[String]) {

        type ColumnInfo = Map[Int, String]

        case class TableConf(column : ColumnInfo,
                                                 shards : Int)

        val conf : ColumnInfo = Map (
            3 -> "c",
            4 -> "d"
        )

        val config_map = Map (
            "file" -> TableConf(
                column = Map (
                    1 -> "a",
                    2 -> "b"
                ),
                shards = 5
            ),
            "file2" -> TableConf(conf , 7)
            )


        println(config_map("file"))
        println(config_map("file").shards)
        println(config_map("file").column(1))

        println(config_map("file2"))
        println(config_map("file2").shards)
        println(config_map("file2").column(3))

  }
}