caseClassToMap.scala

def caseClassToParams(cc: Product) = {
  val fields = cc.getClass.getDeclaredFields.map(_.getName)
  val keyValues = fields.zip(cc.productIterator.to).toList
  keyValues.flatMap {
    case ("foo", v) => {
      val values = v.toString.split("&").toList
      values.map{ p =>
        val pair = p.split("=")
        (pair.head, pair.last)
      }
    }
    case (k, v) => List((k, v.toString))
  }.toMap
}