package org.jboss.errai.demo.grocery.client.local.producer;
import java.util.List;
import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.inject.Produces;
import javax.persistence.EntityManager;
import org.jboss.errai.demo.grocery.client.shared.User;
@ApplicationScoped
public class UserProducer {
// not sure User (a JPA entity) should traditionally be an injectable CDI bean. We'll see how this pans out.
@Produces @ApplicationScoped
private User getUser(EntityManager em) {
// XXX Of course, this only works if all the data is local.
// When there is a server side to this demo, we will always have to authenticate with it before
// we can produce a User instance capable of syncing.
List<User> users = em.createNamedQuery("allUsers", User.class).getResultList();
final User user;
if (users.isEmpty()) {
user = new User();
user.setName("me");
em.persist(user);
em.flush();
}
else {
user = users.get(0);
}
return user;
}
}