org.axonframework.commandhandling.annotation

Class AggregateAnnotationCommandHandler<T extends AggregateRoot>

java.lang.Object

org.axonframework.commandhandling.annotation.AggregateAnnotationCommandHandler<T>

Type Parameters:

T - the type of aggregate this handler handles commands for

All Implemented Interfaces:

Subscribable

public class AggregateAnnotationCommandHandler<T extends AggregateRoot>
extends Object
implements Subscribable

Command handler that handles commands based on CommandHandler annotations on an aggregate. Those annotations may appear on methods, in which case a specific aggregate instance needs to be targeted by the command, or on the constructor. The latter will create a new Aggregate instance, which is then stored in the repository.

Since:

1.2

Author:

Allard Buijze

Constructor Summary

Constructors

Constructor and Description
AggregateAnnotationCommandHandler(Class<T> aggregateType, Repository<T> repository, CommandBus commandBus) Initializes an AnnotationCommandHandler based on the annotations on given aggregateType, to be registered on the given commandBus.
AggregateAnnotationCommandHandler(Class<T> aggregateType, Repository<T> repository, CommandBus commandBus, CommandTargetResolver commandTargetResolver) Initializes an AnnotationCommandHandler based on the annotations on given aggregateType, to be registered on the given commandBus.

Method Summary

Methods

Modifier and Type	Method and Description
void	subscribe() Subscribe this instance with its configured component.
static <T extends AggregateRoot> AggregateAnnotationCommandHandler	subscribe(Class<T> aggregateType, Repository<T> repository, CommandBus commandBus) Subscribe a handler for the given aggregate type to the given command bus.
static <T extends AggregateRoot> AggregateAnnotationCommandHandler	subscribe(Class<T> aggregateType, Repository<T> repository, CommandBus commandBus, CommandTargetResolver commandTargetResolver) Subscribe a handler for the given aggregate type to the given command bus.
void	unsubscribe() Unsubscribe this instance from its subscribed component.

Methods inherited from class java.lang.Object

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

Constructor Detail

AggregateAnnotationCommandHandler

public AggregateAnnotationCommandHandler(Class<T> aggregateType,
                                 Repository<T> repository,
                                 CommandBus commandBus)

Initializes an AnnotationCommandHandler based on the annotations on given aggregateType, to be registered on the given commandBus.

Parameters:

aggregateType - The type of aggregate

repository - The repository providing access to aggregate instances

commandBus - The command bus to register command handlers to

AggregateAnnotationCommandHandler

public AggregateAnnotationCommandHandler(Class<T> aggregateType,
                                 Repository<T> repository,
                                 CommandBus commandBus,
                                 CommandTargetResolver commandTargetResolver)

Initializes an AnnotationCommandHandler based on the annotations on given aggregateType, to be registered on the given commandBus.

Parameters:

aggregateType - The type of aggregate

repository - The repository providing access to aggregate instances

commandBus - The command bus to register command handlers to

commandTargetResolver - The target resolution strategy

Method Detail

subscribe

public static <T extends AggregateRoot> AggregateAnnotationCommandHandler subscribe(Class<T> aggregateType,
                                                                    Repository<T> repository,
                                                                    CommandBus commandBus)

Subscribe a handler for the given aggregate type to the given command bus.

Type Parameters:

T - The type of aggregate this handler handles commands for

Parameters:

aggregateType - The type of aggregate

repository - The repository providing access to aggregate instances

commandBus - The command bus to register command handlers to

Returns:

the Adapter created for the command handler target. Can be used to unsubscribe.

subscribe

public static <T extends AggregateRoot> AggregateAnnotationCommandHandler subscribe(Class<T> aggregateType,
                                                                    Repository<T> repository,
                                                                    CommandBus commandBus,
                                                                    CommandTargetResolver commandTargetResolver)

Subscribe a handler for the given aggregate type to the given command bus.

Type Parameters:

T - The type of aggregate this handler handles commands for

Parameters:

aggregateType - The type of aggregate

repository - The repository providing access to aggregate instances

commandBus - The command bus to register command handlers to

commandTargetResolver - The target resolution strategy

Returns:

the Adapter created for the command handler target. Can be used to unsubscribe.

unsubscribe

@PreDestroy
public void unsubscribe()

Description copied from interface: Subscribable

Unsubscribe this instance from its subscribed component.

Specified by:

unsubscribe in interface Subscribable

subscribe

@PostConstruct
public void subscribe()

Description copied from interface: Subscribable

Subscribe this instance with its configured component.

Specified by:

subscribe in interface Subscribable