AccountEventFacade.java
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package fi.insomnia.bortal.facade;
import java.util.List;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
import fi.insomnia.bortal.model.AccountEvent;
import fi.insomnia.bortal.model.AccountEvent_;
import fi.insomnia.bortal.model.LanEvent;
import fi.insomnia.bortal.model.Product_;
import fi.insomnia.bortal.model.Role;
import fi.insomnia.bortal.model.Role_;
import fi.insomnia.bortal.model.User;
@Stateless
@LocalBean
public class AccountEventFacade extends IntegerPkGenericFacade<AccountEvent> {
public AccountEventFacade() {
super(AccountEvent.class);
}
public List<Role> findProvidedRoles(LanEvent event, User u) {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<Role> cq = cb.createQuery(Role.class);
Root<Role> root = cq.from(Role.class);
cq.where(
cb.equal(root.get(Role_.event), event),
cb.equal(root.join(Role_.productsProvide).join(Product_.accountEvents).get(AccountEvent_.user), u)
);
// TypedQuery<Role> q =
// em.createQuery("select distinct ac.product.provides from AccountEvent ac where ac.id.eventId = :eventid and ac.user = :user and ac.product.provides is not null",
// Role.class);
// q.setParameter("eventid", event.getId());
// q.setParameter("user", u);
return getEm().createQuery(cq).getResultList();
}
}