object ChangeStreams
Change stream utilities.
import scala.concurrent.{ ExecutionContext, Future } import reactivemongo.api.ChangeStreams.FullDocumentStrategy import reactivemongo.api.bson.BSONDocument import reactivemongo.api.bson.collection.BSONCollection def peekNext( coll: BSONCollection, strategy: FullDocumentStrategy)( implicit ec: ExecutionContext): Future[Option[BSONDocument]] = coll.watch[BSONDocument](fullDocumentStrategy = Some(strategy)). cursor.headOption def doIt(coll: BSONCollection)( implicit ec: ExecutionContext): Future[Unit] = for { _ <- peekNext(coll, FullDocumentStrategy.Default) _ <- peekNext(coll, FullDocumentStrategy.UpdateLookup) } yield ()
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sealed abstract
class
FullDocumentStrategy extends AnyRef
Defines the lookup strategy of a change stream.
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object
FullDocumentStrategy
FullDocumentStrategy utilities