CODEWITHSUNDEEP
mongodbscalascalding
Omid
Omid

Reputation: 1989

Mapping Scala class to Scalding or MongoDB

I am new to both Scala and NoSQL databases. I would like to know is if there exist ORM tools that will map my Scala objects to a NoSQL database, as with RDBMS solutions?

Upvotes: 0

Views: 119

Answers (1)

John Powell
John Powell

Reputation: 12581

There is a library called Kundera, based on JPA, that provides ORM for a number of NoSQL databases of different flavours, including HBase, Cassandra, MongoDB, CouchDB and Neo4J. See https://github.com/impetus-opensource/Kundera which appears to be under active development. Note that the nature of some of the problems that have given rise to NoSQL in the first place, and some of the tradeoffs inherent in the CAP theorem between availability, consistency and partition tolerance, make ORM challenging in a NoSQL environment. There is some good discussion of some of these issues here: http://architects.dzone.com/articles/sqlifying-nosql-%E2%80%93-are-orm

As you mentioned Scala, specifically, here is a very interesting article from Foursquare about how they built DSL with Scala for interacting with MongoDB. http://engineering.foursquare.com/2011/01/21/rogue-a-type-safe-scala-dsl-for-querying-mongodb/

Upvotes: 1

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