Package org.axonframework.modelling

Interface EntityEvolver<E>

Type Parameters:

E - The entity type to evolve.

All Known Subinterfaces:

EntityChildMetamodel<C,P>, EntityEvolvingComponent<E>, EntityMetamodel<E>

All Known Implementing Classes:

AbstractEntityChildMetamodel, AnnotatedEntityMetamodel, AnnotationBasedEntityEvolvingComponent, ConcreteEntityMetamodel, ListEntityChildMetamodel, PayloadBasedEntityEvolver, PolymorphicEntityMetamodel, SimpleEntityEvolvingComponent, SingleEntityChildMetamodel

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface EntityEvolver<E>

Functional interface describing how to evolve a given entity of type e based on a given EventMessage.

Since:

5.0.0

Author:

Allard Buijze, Mateusz Nowak, Mitchell Herrijgers, Steven van Beelen

Method Summary

Modifier and Type	Method	Description
E	evolve(E entity, EventMessage event, ProcessingContext context)	Evolve the given entity by applying the given event to it.

Method Details

evolve

E evolve(@Nonnull
 E entity,
 @Nonnull
 EventMessage event,
 @Nonnull
 ProcessingContext context)

Evolve the given entity by applying the given event to it.

Parameters:

entity - The current entity to evolve with the given event.

event - The event that might adjust the entity.

context - The context within which to evolve the entity by the given event.

Returns:

The evolved entity based on the given event, or the same entity when nothing happened.