Axonframework doesn't insert event data with jpa - axon

Question

I ran the getting started guide (http://www.axonframework.org/axon-2-quickstart-guide/) and it works fine.
I tried to replace the FileSystemEventStore with JpaEventStore, but it doesn't store any event.
Here is my configuration:
public static void main(String[] args) {
CommandBus commandBus = new SimpleCommandBus();
CommandGateway commandGateway = new DefaultCommandGateway(commandBus);
//EventStore eventStore = new FileSystemEventStore(new SimpleEventFileResolver(new File("./events")));
EntityManagerFactory entityManagerFactory = Persistence.createEntityManagerFactory( "cqrsworkshop" );
EntityManager entityManager = entityManagerFactory.createEntityManager();
SimpleEntityManagerProvider entityManagerProvider = new SimpleEntityManagerProvider(entityManager);
EventStore eventStore = new JpaEventStore(entityManagerProvider);
EventBus eventBus = new SimpleEventBus();
EventSourcingRepository<ToDoItem> repository = new EventSourcingRepository<ToDoItem>(ToDoItem.class, eventStore);
repository.setEventBus(eventBus);
AggregateAnnotationCommandHandler.subscribe(ToDoItem.class, repository, commandBus);
AnnotationEventListenerAdapter.subscribe(new ToDoEventHandler(), eventBus);
final String itemId = UUID.randomUUID().toString();
commandGateway.send(new CreateToDoItemCommand(itemId, "Need to do this"));
commandGateway.send(new MarkCompletedCommand(itemId));
entityManagerFactory.close();
}
<persistence-unit name="cqrsworkshop">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<!-- JPA Event Store -->
<class>org.axonframework.eventstore.jpa.DomainEventEntry</class>
<class>org.axonframework.eventstore.jpa.SnapshotEventEntry</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="org.h2.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:h2:~/test" />
<property name="javax.persistence.jdbc.user" value="sa" />
<property name="javax.persistence.jdbc.password" value="" />
<property name="hibernate.dialect" value="org.hibernate.dialect.H2Dialect " />
<property name="hibernate.show_sql" value="true" />
<property name="hibernate.hbm2ddl.auto" value="update" />
</properties>
</persistence-unit>

Answer 1

ATM to use JPA with Axon requires Spring. The only implementation provided for Axon TransactionManager is SpringTransactionManager which requires an instance of org.springframework.orm.jpa.JpaTransactionManager. See JpaEventStore and resource local transactions: quite old but seems still valid.
By Spring I mean not only Spring-orm but also Spring-context and Spring-aspects. I haven't find out how to use JpaTransactionManager without all the Spring magic.
Two exemples:
a vaadin one
a console one (in Xtend but it's really Java like)