reactivemongo-bson-msb-compat

import scala.reflect.ClassTag

import reactivemongo.api.bson.BSONWriter
import reactivemongo.api.bson.msb._

def writerToEncoder[T](w: BSONWriter[T])(implicit ct: ClassTag[T]) = {
 // ClassTag required for generics

 val enc: org.bson.codecs.Encoder[T] = w
 enc
}

// From org.bson
import reactivemongo.api.bson.{ BSONDouble, BSONString, BSONValue }

val newStr: BSONString = new org.bson.BsonString("foo")
val newVal: BSONValue = new org.bson.BsonInt32(2)

// To org.bson
val oldStr: org.bson.BsonString = BSONString("bar")
val oldVal: org.bson.BsonValue = BSONDouble(1.2D)