Packages

trait Transactions extends AnyRef

Effectively provides the behaviour not available on org.mongodb.scala.ClientSession (driver-scala, nor com.mongodb.reactivestreams.client.ClientSession driver-reactive-streams) but is available on com.mongodb.client.ClientSession (driver-core).

It is recommended to use the Future variant (i.e. add .toFuture to all db calls), since the Observable variant has some surprises. E.g.

  • some commands return Observable[Void] which will ignore any following map/flatMap (e.g. for-comprehension steps)
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Abstract Value Members

  1. abstract def mongoComponent: MongoComponent

Concrete Value Members

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  6. def completeWith[A](obs: Observable[Void], f: => A): Observable[A]

    Observable[Void] by definition will never emit a value to be mapped (see org.mongodb.scala.internal.MapObservable).

    Observable[Void] by definition will never emit a value to be mapped (see org.mongodb.scala.internal.MapObservable). When converting to Future, it works since it completes with None (see org.mongodb.scala.Observable.headOption). This function converts an Observable[Void] to the provided value to continue.

    completeWithUnit now exists on Observable but throws "java.lang.IllegalStateException: The Observable has not been subscribed to."

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  14. final def notify(): Unit
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  15. final def notifyAll(): Unit
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  16. final def synchronized[T0](arg0: => T0): T0
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  19. final def wait(arg0: Long, arg1: Int): Unit
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  20. final def wait(arg0: Long): Unit
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  21. def withClientSession[A](f: (ClientSession) => Observable[A])(implicit tc: TransactionConfiguration): Observable[A]
  22. def withClientSession[A](f: (ClientSession) => Future[A])(implicit tc: TransactionConfiguration, ec: ExecutionContext): Future[A]
  23. def withSessionAndTransaction[A](f: (ClientSession) => Observable[A])(implicit tc: TransactionConfiguration): Observable[A]
  24. def withSessionAndTransaction[A](f: (ClientSession) => Future[A])(implicit tc: TransactionConfiguration, ec: ExecutionContext): Future[A]
  25. def withTransaction[A](session: ClientSession, f: => Observable[A])(implicit tc: TransactionConfiguration): Observable[A]

    A transaction is started before running the continuation.

    A transaction is started before running the continuation. It will be committed or aborted depending on whether the callback executes successfully or not. It also provides retries for network issues See https://github.com/mongodb/mongo-java-driver/tree/r4.3.1/driver-core/src/test/resources/transactions-convenient-api#retry-timeout-is-enforced And https://docs.mongodb.com/manual/core/retryable-writes/#retryable-writes-and-multi-document-transactions

  26. def withTransaction[A](session: ClientSession, f: => Future[A])(implicit tc: TransactionConfiguration, ec: ExecutionContext): Future[A]

    A transaction is started before running the continuation.

    A transaction is started before running the continuation. It will be committed or aborted depending on whether the callback executes successfully or not. It also provides retries for network issues See https://github.com/mongodb/mongo-java-driver/tree/r4.3.1/driver-core/src/test/resources/transactions-convenient-api#retry-timeout-is-enforced And https://docs.mongodb.com/manual/core/retryable-writes/#retryable-writes-and-multi-document-transactions

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