play scala soap client plus json transformation

gistfile1.scala

  def interday(symbol:String, range:String) = Action {request =>
    Async {
      WS.url("http://api.sproutwerks.com/api/TimeSeries/TimeSeries.svc").withHeaders(CONTENT_TYPE -> "application/soap+xml").post(ChartRequests.interdayRequest(symbol, range)).map { response =>
        Ok(timeSeriesToJson(range.toUpperCase, response.xml, noFilter, timeLabeler(range))).as(JSON)
      }
    } 
  }

  def intraday(symbol:String) = Action {request =>
    Async {
      WS.url("http://api.sproutwerks.com/api/TimeSeries/TimeSeries.svc").withHeaders(CONTENT_TYPE -> "application/soap+xml").post(ChartRequests.intradayRequest(symbol)).map { response =>
        Ok(timeSeriesToJson("DAY", response.xml, every15Minutes, {x:String => x.slice(11, 16)})).as(JSON)
      }
    } 
  }

  val every5Minutes = {x:Map[String, Any] => x("timeLabel").asInstanceOf[String].last == '0'}
  val every15Minutes = {x:Map[String, Any] => Set("00", "15", "30", "45").contains(x("timeLabel").asInstanceOf[String].slice(3,5))}
  val noFilter = {x:Map[String, Any] => true}

  def timeSeriesToJson(range:String, payload:scala.xml.Elem, timeFilter:Map[String,Any] => Boolean, timeLabeler:String => String): String = {
    val series = (payload \\ "Row").map(row=> Map("open" -> nodeToDouble(row, "OPEN"),
                                                  "high" -> nodeToDouble(row, "HIGH"),
                                                  "low"  -> nodeToDouble(row, "LOW"),
                                                  "close" -> nodeToDouble(row, "CLOSE"),
                                                  "volume" -> nodeToDouble(row, "VOLUME"), 
                                                  "timestamp" -> ParseHelper.parseDate((row \\ "TIMESTAMP").text),
                                                  "timeLabel" -> timeLabeler((row \\ "TIMESTAMP").text)))
    generate(Map(
                "grid" -> range,
                "labels" -> timeSeriesLabels(range, series),
                "points" -> series.filter(timeFilter)
                )
    )
  }