org.axonframework.modelling.command

Interface CreationPolicyAggregateFactory<A>

Type Parameters:

A - The type of aggregate this factory creates

All Known Implementing Classes:

NoArgumentConstructorCreationPolicyAggregateFactory

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 CreationPolicyAggregateFactory<A>

Interface to describe a way to create Aggregate instances based on an identifier when an instance has to be created in order to be used in Command handlers annotated with CreationPolicy.

Since:

4.6.0

Author:

Stefan Andjelkovic

Method Summary

Modifier and Type	Method and Description
A	create(Object identifier) Instantiates the aggregate instance based on the provided identifier.

Method Detail

create

@Nonnull
A create(@Nullable
                  Object identifier)

Instantiates the aggregate instance based on the provided identifier. The identifier can be a null if no identifier is found or provided in the command message.

Parameters:

identifier - the identifier extracted from the command message

Returns:

an identifier initialized aggregate root instance ready to handle commands