using Hibernate manual flush with ConversationScoped bean

[asookazian]

from 5.3.1. Conversation demarcation ref doc:

@ConversationScoped @Stateful
public class OrderBuilder {
private Order order;
private @Inject Conversation conversation;
private @PersistenceContext(type = EXTENDED) EntityManager em;
@Produces public Order getOrder() {
return order;
}
public Order createOrder() {
order = new Order();
conversation.begin();
return order;
}
public void addLineItem(Product product, int quantity) {
order.add(new LineItem(product, quantity));
}
public void saveOrder(Order order) {
em.persist(order);
conversation.end();
}
@Remove
public void destroy() {}
}

assuming JPA 2.0 with Hibernate persistence provider, how can I use manual flush in this example? 

In Seam I can do:

@Begin(join=true, flushMode=FlushModeType.MANUAL)

So is this possible with Weld/JPA2 or must I use Seam3?

[gavin.king]

That will be a feature of Seam3, correct.

[asookazian]

Can't it be a PE to CDI that may be used by Seam3 and other frameworks??

[nickarls]

A Feature of Seam is equivalent to a PE since Seam 3 will not have a customized Weld as core. Therefore, a PE to Seam 3 is a PE to any CDI implementation/framework. Seam 3 being the example here.