Simple example for mongo-scala-driver "Getting Started" Wiki page

mongo-scala-driver first example.scala

// Model
case class User(val name: String)

// Factory object:
object User extends AbstractShape[User] {
  // one scalar field called "name"
  object name extends Scalar[String]("name", _.name) with Functional[String]

  // fields list
  override lazy val * = name :: Nil

  // How to extract the model instance from a MongoDB native object?
  override def factory(dbo: DBObject): Option[User] =
    for {val name(n) <- Some(dbo)} yield new User(n)
}

// Suppose we have a DBCollection:
val dbColl: DBCollection
// Let's make it look like it stores User instances:
val users = dbColl of User

// Insert few users:
def createUser(i: Int) = User("User"+i)
for {val obj <- Array.fromFunction(createUser)(10) }
  users << obj

// Test emptiness:
if (users.isEmpty) ...
// Get the first user
val first: Option[User] = users.firstOption
// Walk though the collection (you are free to use any filter/flatMap/map/etc.
for {val u <- users} ...

// Get only first 2
for {val u <- User take 2 in users} ...
// Skip first 5 and get 2 users
for {val u <- User drop 5 take 2 in users} ...

// Query by name
val user3 = (User where {User.name eq_? "User3"} take 1 in users).firstOption
// Query by regexp
val endingBy5 = User.name ~ "r5$".r in users

Hi, I can't seem to get this example to compile. It gets stuck on line 20 because it cannot find an "of" method. Any ideas?

Got it figured out by adding the following:
import com.osinka.mongodb._

It should probably be mentioned that the example isn't complete, the dbCol needs to be gotten from Mongo first before you can use it (which is probably implied by the "//Suppose we have a DBCollection" comment)

Fully functional example here:
http://mrico.eu/mrico/entry/quick_start_scala_mongodb

Yep, mongo-scala-driver does not provide wrapper around original Mongo, DB, etc. interfaces from the Java driver, so that you can selectively wrap what you want into Shapes. That's why you have to explicitly say "this DBCollection is of shape Address"

Thanks for sharing!