gistfile1.scala

case class QueryResponse(query: Protos.Query,
                         matchCount: Int,
                         posts: Seq[Protos.Post])
  extends NameValueMessage {
   def toNameValuePairs = 
      List(
        ("query", query),
        ("matchCount", matchCount),
        ("posts", posts)
      ) 
}
                                 
object QueryResponseMaterializer 
  extends MultiValueMapMaterializer {
   def fromMap(nameValueMap: Map[String, Any]): = 
    QueryResponse(
      nameValueMap.getOrElse("query",
       Protos.Query.getDefaultInstance
      ).asInstanceOf[Protos.Query],
      nameValueMap.getOrElse("matchCount", 0
      ).asInstanceOf[Int],
      nameValueMap.getOrElse("posts",
       List.empty
      ).asInstanceOf[Seq[Protos.Post]]
    )
}