org.springframework.data.domain

Class AbstractAggregateRoot<A extends AbstractAggregateRoot<A>>

java.lang.Object

org.springframework.data.domain.AbstractAggregateRoot<A>

public class AbstractAggregateRoot<A extends AbstractAggregateRoot<A>>
extends Object

Convenience base class for aggregate roots that exposes a registerEvent(Object) to capture domain events and expose them via domainEvents(). The implementation is using the general event publication mechanism implied by DomainEvents and AfterDomainEventPublication. If in doubt or need to customize anything here, rather build your own base class and use the annotations directly.

Since:

1.13

Author:

Oliver Gierke, Christoph Strobl

Constructor Summary

Constructors

Constructor and Description
AbstractAggregateRoot()

Method Summary

Modifier and Type	Method and Description
protected A	andEvent(Object event) Adds the given event to the aggregate for later publication when calling a Spring Data repository's save-method.
protected A	andEventsFrom(A aggregate) Adds all events contained in the given aggregate to the current one.
protected void	clearDomainEvents() Clears all domain events currently held.
protected Collection<Object>	domainEvents() All domain events currently captured by the aggregate.
protected <T> T	registerEvent(T event) Registers the given event object for publication on a call to a Spring Data repository's save methods.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractAggregateRoot

public AbstractAggregateRoot()

Method Detail

registerEvent

protected <T> T registerEvent(T event)

Registers the given event object for publication on a call to a Spring Data repository's save methods.

Parameters:

event - must not be null.

Returns:

the event that has been added.

See Also:

andEvent(Object)

clearDomainEvents

protected void clearDomainEvents()

Clears all domain events currently held. Usually invoked by the infrastructure in place in Spring Data repositories.

domainEvents

protected Collection<Object> domainEvents()

All domain events currently captured by the aggregate.

andEventsFrom

protected final A andEventsFrom(A aggregate)

Adds all events contained in the given aggregate to the current one.

Parameters:

aggregate - must not be null.

Returns:

the aggregate

andEvent

protected final A andEvent(Object event)

Adds the given event to the aggregate for later publication when calling a Spring Data repository's save-method. Does the same as registerEvent(Object) but returns the aggregate instead of the event.

Parameters:

event - must not be null.

Returns:

the aggregate

See Also:

registerEvent(Object)