Scala Better way to handle Map NULL.

Done.scala

object Host { 

def configForHost(host: String): String = {
    val resultMap = template.queryForMap("SELECT config FROM host WHERE NAME = ?", host)
    resultMap.get("config").toString
  }
}

ApiServlet {
  get("/config/host/:host") {
    val host = params("host")
    val hostConfig = Host.configForHost(host)
    val allTags = Host.allTagConfig(host)
    mergeJson(hostConfig, allTags)
  }
}