object EventSourcedBehavior
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type
CommandHandler[Command, Event, State] = (State, Command) ⇒ Effect[Event, State]
Type alias for the command handler function that defines how to act on commands.
Type alias for the command handler function that defines how to act on commands.
The type alias is not used in API signatures because it's easier to see (in IDE) what is needed when full function type is used. When defining the handler as a separate function value it can be useful to use the alias for shorter type signature.
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type
EventHandler[State, Event] = (State, Event) ⇒ State
Type alias for the event handler function for updating the state based on events having been persisted.
Type alias for the event handler function for updating the state based on events having been persisted.
The type alias is not used in API signatures because it's easier to see (in IDE) what is needed when full function type is used. When defining the handler as a separate function value it can be useful to use the alias for shorter type signature.
Value Members
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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def
apply[Command, Event, State](persistenceId: PersistenceId, emptyState: State, commandHandler: (State, Command) ⇒ Effect[Event, State], eventHandler: (State, Event) ⇒ State): EventSourcedBehavior[Command, Event, State]
Create a
Behavior
for a persistent actor. -
final
def
asInstanceOf[T0]: T0
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def
clone(): AnyRef
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final
def
eq(arg0: AnyRef): Boolean
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def
equals(arg0: Any): Boolean
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final
def
getClass(): Class[_]
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def
hashCode(): Int
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final
def
isInstanceOf[T0]: Boolean
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def
lastSequenceNumber(context: ActorContext[_]): Long
The last sequence number that was persisted, can only be called from inside the handlers of an
EventSourcedBehavior
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final
def
ne(arg0: AnyRef): Boolean
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final
def
notify(): Unit
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final
def
notifyAll(): Unit
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final
def
synchronized[T0](arg0: ⇒ T0): T0
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def
toString(): String
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final
def
wait(arg0: Long, arg1: Int): Unit
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final
def
wait(arg0: Long): Unit
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final
def
wait(): Unit
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def
withEnforcedReplies[Command <: ExpectingReply[_], Event, State](persistenceId: PersistenceId, emptyState: State, commandHandler: (State, Command) ⇒ ReplyEffect[Event, State], eventHandler: (State, Event) ⇒ State): EventSourcedBehavior[Command, Event, State]
Create a
Behavior
for a persistent actor that is enforcing that replies to commands are not forgotten.Create a
Behavior
for a persistent actor that is enforcing that replies to commands are not forgotten. Then there will be compilation errors if the returned effect isn't a ReplyEffect, which can be created with Effect.reply, Effect.noReply, Effect.thenReply, or Effect.thenNoReply. -
object
CommandHandler
The
CommandHandler
defines how to act on commands.The
CommandHandler
defines how to act on commands. ACommandHandler
is a function:(State, Command) => Effect[Event, State]
The CommandHandler#command is useful for simple commands that don't need the state and context.