Package akka.javasdk.eventsourcedentity

Interface EventSourcedEntity.Effect<T>

Type Parameters:

T - The type of the message that must be returned by this call.

All Known Subinterfaces:

EventSourcedEntity.ReadOnlyEffect<T>

Enclosing class:

EventSourcedEntity<S,E>

public static interface EventSourcedEntity.Effect<T>

An Effect is a description of what the runtime needs to do after the command is handled. You can think of it as a set of instructions you are passing to the runtime, which will process the instructions on your behalf.

Each component defines its own effects, which are a set of predefined operations that match the capabilities of that component.

An EventSourcedEntity Effect can either:

• persist events and send a reply to the caller
• directly reply to the caller if the command is not requesting any state change
• rejected the command by returning an error
• instruct the runtime to delete the entity

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	EventSourcedEntity.Effect.Builder<S,E>	Construct the effect that is returned by the command handler.
static interface	EventSourcedEntity.Effect.OnSuccessBuilder<S>