AccountEventFacade.java 3.18 KB
package fi.insomnia.bortal.facade;

import java.math.BigDecimal;
import java.util.ArrayList;
import java.util.List;

import javax.ejb.EJB;
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.beans.EventBeanLocal;
import fi.insomnia.bortal.model.AccountEvent;
import fi.insomnia.bortal.model.AccountEvent_;
import fi.insomnia.bortal.model.EventUser;
import fi.insomnia.bortal.model.LanEvent;
import fi.insomnia.bortal.model.Product;
import fi.insomnia.bortal.model.Product_;
import fi.insomnia.bortal.model.Role;
import fi.insomnia.bortal.model.Role_;

@Stateless
@LocalBean
public class AccountEventFacade extends IntegerPkGenericFacade<AccountEvent> {

	public AccountEventFacade() {
		super(AccountEvent.class);
	}

	@EJB
	private EventBeanLocal eventbean;

	public List<Role> findProvidedRoles(LanEvent event, EventUser 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();
	}

	public List<AccountEvent> getAccountEvents(EventUser user) {
		CriteriaBuilder cb = getEm().getCriteriaBuilder();

		CriteriaQuery<AccountEvent> cq = cb.createQuery(AccountEvent.class);
		Root<AccountEvent> root = cq.from(AccountEvent.class);

		cq.where(cb.equal(root.get(AccountEvent_.user), user),
				cb.equal(root.get(AccountEvent_.product).get(Product_.event), eventbean.getCurrentEvent())
				);
		return getEm().createQuery(cq).getResultList();
	}

	public BigDecimal getProductCount(List<Product> list) {
		CriteriaBuilder cb = getEm().getCriteriaBuilder();
		CriteriaQuery<BigDecimal> cq = cb.createQuery(BigDecimal.class);
		Root<AccountEvent> root = cq.from(AccountEvent.class);
		List<Integer> ids = new ArrayList<Integer>();
		for (Product l : list) {
			ids.add(l.getId());
		}
		cq.where(root.get(AccountEvent_.product).get(Product_.id).in(ids));

		cq.select(cb.sum(root.get(AccountEvent_.quantity)));

		return super.getSingleNullableResult(getEm().createQuery(cq));
	}

	public BigDecimal getProductCount(List<Product> list, EventUser eventuser) {
		CriteriaBuilder cb = getEm().getCriteriaBuilder();
		CriteriaQuery<BigDecimal> cq = cb.createQuery(BigDecimal.class);
		Root<AccountEvent> root = cq.from(AccountEvent.class);
		List<Integer> ids = new ArrayList<Integer>();
		for (Product l : list) {
			ids.add(l.getId());
		}
		cq.where(root.get(AccountEvent_.product).get(Product_.id).in(ids),
				cb.equal(root.get(AccountEvent_.user), eventuser));
		cq.select(cb.sum(root.get(AccountEvent_.quantity)));
		return super.getSingleNullableResult(getEm().createQuery(cq));
	}
}