PlaceSlotFacade.java
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/*
* Copyright Codecrew Ry
*
* All rights reserved.
*
* This license applies to any software containing a notice placed by the
* copyright holder. Such software is herein referred to as the Software.
* This license covers modification, distribution and use of the Software.
*
* Any distribution and use in source and binary forms, with or without
* modification is not permitted without explicit written permission from the
* copyright owner.
*
* A non-exclusive royalty-free right is granted to the copyright owner of the
* Software to use, modify and distribute all modifications to the Software in
* future versions of the Software.
*
*/
package fi.codecrew.moya.facade;
import java.util.ArrayList;
import java.util.Calendar;
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.Path;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import fi.codecrew.moya.beans.EventBeanLocal;
import fi.codecrew.moya.model.Bill;
import fi.codecrew.moya.model.Bill_;
import fi.codecrew.moya.model.EventUser;
import fi.codecrew.moya.model.Place;
import fi.codecrew.moya.model.PlaceSlot;
import fi.codecrew.moya.model.PlaceSlot_;
import fi.codecrew.moya.model.Product;
@Stateless
@LocalBean
public class PlaceSlotFacade extends IntegerPkGenericFacade<PlaceSlot> {
private static final Logger logger = LoggerFactory.getLogger(PlaceSlotFacade.class);
@EJB
EventBeanLocal eventBean;
public PlaceSlotFacade() {
super(PlaceSlot.class);
}
/**
* Returns placeslots this user can use.
*
* @param user
* @param product
* @return
*/
public List<PlaceSlot> findFreePlaceSlots(EventUser user, Product product) {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<PlaceSlot> q = cb.createQuery(PlaceSlot.class);
Root<PlaceSlot> root = q.from(PlaceSlot.class);
Path<Bill> bill = root.get(PlaceSlot_.bill);
final List<Predicate> preds = new ArrayList<>();
preds.add(cb.equal(bill.get(Bill_.user), user));
preds.add(cb.isNotNull(bill.get(Bill_.paidDate)));
preds.add(cb.isNull(root.get(PlaceSlot_.used)));
if (product != null) {
preds.add(cb.equal(root.get(PlaceSlot_.product), product));
}
q.where(preds.toArray(new Predicate[preds.size()]));
return getEm().createQuery(q).getResultList();
}
// private List<PlaceSlot> getSlotsForUser(EventUser u) {
//
// CriteriaBuilder cb = getEm().getCriteriaBuilder();
// CriteriaQuery<PlaceSlot> cq = cb.createQuery(PlaceSlot.class);
//
// }
public PlaceSlot findSlotForPlace(Place place) {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<PlaceSlot> q = cb.createQuery(PlaceSlot.class);
Root<PlaceSlot> root = q.from(PlaceSlot.class);
q.where(cb.equal(root.get(PlaceSlot_.place), place));
PlaceSlot slot = super.getSingleNullableResult(getEm().createQuery(q));
return slot;
}
public Long findUnusedSlotsCount(Product prod) {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<Long> q = cb.createQuery(Long.class);
Root<PlaceSlot> root = q.from(PlaceSlot.class);
q.select(cb.count(root));
Path<Bill> bill = root.get(PlaceSlot_.bill);
Path<Calendar> billexp = bill.get(Bill_.expires);
q.where(cb.equal(root.get(PlaceSlot_.product), prod),
cb.or(cb.isNull(billexp),
cb.greaterThan(billexp, Calendar.getInstance())
),
cb.isNull(root.get(PlaceSlot_.place)),
cb.isNull(root.get(PlaceSlot_.used))
);
Long count = super.getSingleNullableResult(getEm().createQuery(q));
return count;
}
public Long totalSlotcount(Product prod) {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<Long> q = cb.createQuery(Long.class);
Root<PlaceSlot> root = q.from(PlaceSlot.class);
q.select(cb.count(root));
Path<Bill> bill = root.get(PlaceSlot_.bill);
Path<Calendar> billexp = bill.get(Bill_.expires);
q.where(cb.equal(root.get(PlaceSlot_.product), prod),
cb.or(cb.isNull(billexp),
cb.greaterThan(billexp, Calendar.getInstance())
)
);
Long count = super.getSingleNullableResult(getEm().createQuery(q));
return count;
}
}