akka.persistence.multidc.javadsl

Class Effect<Event,State>

java.lang.Object

akka.persistence.multidc.javadsl.Effect<Event,State>

Direct Known Subclasses:

EffectImpl

public abstract class Effect<Event,State>
extends java.lang.Object

A command handler returns a Effect directive that defines what event or events, if any, to persist. Use the thenPersist, thenPersistAll or done methods of the context that is passed to the command handler function to create the Effect directive.

Additional side effects can be performed in the callback andThen

Instances of Effect are available through factories in the respective Java and Scala DSL packages.

Not intended for user extension.

Constructor Summary

Constructors

Constructor and Description
Effect()

Method Summary

Modifier and Type	Method and Description
abstract Effect<Event,State>	andThen(java.util.function.Consumer<State> afterCallback) Execute the given side effect callback after events, if any, are persisted.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

Effect

public Effect()

Method Detail

andThen

public abstract Effect<Event,State> andThen(java.util.function.Consumer<State> afterCallback)

Execute the given side effect callback after events, if any, are persisted. Side effect callback are always called, also when no events are emitted.

Parameters:

afterCallback - (undocumented)

Returns:

(undocumented)