DAO of Maps

[Pat Ferrel]

The docs say I can have a DAO that stores Maps as long as the key is a String. the following fails, anyone know why?

// model = sum of converted jouney weighted vectors

case class NavHintsDAO(navHints: MongoCollection) extends SalatDAO[Map[String, Double], String](navHints)

...

val navHintsDAO: NavHintsDAO = NavHintsDAO(connection(engineId)("nav_hints"))

This pattern works fine if the thing stored is a case class. I suppose I can store elements then create a map by reading all of them but suspect this would be highly inefficient.

[Noah Zucker]

See other thread on this topic.