From the website:
Rogue is a type-safe internal Scala DSL for constructing and executing find and modify commands against MongoDB in the Lift web framework. It is fully expressive with respect to the basic options provided by MongoDB’s native query language, but in a type-safe manner, building on the record types specified in your Lift models.
Seen on MyNoSQL
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PS: To learn more about Lift, see: http://liftweb.net/