aggregate

Type Members

1. trait AggregateCmd extends AnyRef

   

2. class AggregateCmdMessageExtractor extends HashCodeMessageExtractor

   

3. class AggregateError extends RuntimeException

   

4. abstract class AggregateStarter extends AggregateStarterLike

   

5. trait AggregateStarterLike extends AnyRef

   

6. class AggregateStarterSimple extends AggregateStarter

   

7. trait AggregateState[E, S <: AggregateStateBase[E, S]] extends AggregateStateBase[E, S]

   

8. trait AggregateStateBase[E, S <: AggregateStateBase[E, S]] extends AnyRef

   

9. trait AggregateViewAsker extends AnyRef

   

10. trait AggregateViewStarter extends AggregateViewAsker

    

11. class DispatcherActor extends Actor with ActorLogging

    

12. abstract class GeneralAggregateBase[E, S <: AggregateStateBase[E, S]] extends EnhancedPersistentShardingActor[E, AggregateError]

    

    Dispatcher - When sending something to an ES, use its dispatcher Command - Dispatchable message - When sent to the dispatcher, it will be sent to the correct ES.

    Dispatcher - When sending something to an ES, use its dispatcher Command - Dispatchable message - When sent to the dispatcher, it will be sent to the correct ES.

    Event - Represents a change of state for an ES

    State is immutable. Represents the full state of the entity. based on its state it can accept or reject an event. Has with method transition(event) - if ok, it returns new state. If not, an error is thrown.

    Can be used to try an event (since it is mutable)

    DurableMessage: method of sending a message which with retry-mechanism until confirm() is called.

    GeneralAggregate pseudocode:

    for each received cmd: convert it to event try the event (by calling state.transition() ) if it failed: maybe do something if it works: persist event generate and send DurableMessages change our current state (by calling state.transition() and keeping the result )

    E

    Superclass/trait representing your events

    S

    The type representing your state

13. abstract class GeneralAggregateDMViaEvent[E, S <: AggregateState[E, S]] extends GeneralAggregateBase[E, S]

    

14. abstract class GeneralAggregateDMViaState[E, S <: AggregateStateBase[E, S]] extends GeneralAggregateBase[E, S]

    

15. abstract class GeneralAggregateDMViaStateAndEvent[E, S <: AggregateStateBase[E, S]] extends GeneralAggregateBase[E, S]

    

16. class GeneralAggregateView[E, S <: AggregateStateBase[E, S]] extends EnhancedPersistentView[E, S]

    

17. case class ResultingDMs(list: List[SendAsDM]) extends Product with Serializable

    

18. case class ResultingEvent[+E](events: () ⇒ List[E], errorHandler: (String) ⇒ Unit, successHandler: () ⇒ Unit, afterValidationSuccessHandler: () ⇒ Unit) extends Product with Serializable

    

19. case class StateTransition[E, S <: AggregateStateBase[E, S]](newState: S, newEvent: Option[E] = None) extends Product with Serializable