EventFacade.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.Calendar;
import java.util.Date;
import java.util.List;
import javax.ejb.LocalBean;
import javax.ejb.Stateless;
import javax.persistence.TypedQuery;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
import javax.persistence.criteria.Subquery;
import fi.codecrew.moya.model.*;
@Stateless
@LocalBean
public class EventFacade extends IntegerPkGenericFacade<LanEvent> {
public EventFacade() {
super(LanEvent.class);
}
public String flushCache() {
getEm().getEntityManagerFactory().getCache().evictAll();
return "Evicted all!";
}
public List<LanEvent> findAll() {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<LanEvent> cq = cb.createQuery(getEntityClass());
cq.select(cq.from(getEntityClass()));
TypedQuery<LanEvent> q = getEm().createQuery(cq);
return q.getResultList();
}
public List<LanEvent> findAll(User user) {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<LanEvent> cq = cb.createQuery(LanEvent.class);
Root<LanEvent> root = cq.from(LanEvent.class);
// subquery
Subquery<Integer> subcq = cq.subquery(Integer.class);
Root<EventUser> subroot = subcq.from(EventUser.class);
subcq.select(subroot.get(EventUser_.event).get(LanEvent_.id));
subcq.where(
cb.equal(subroot.get(EventUser_.user), user)
);
cq.where(
root.get(LanEvent_.id).in(subcq)
);
List<LanEvent> events = getEm().createQuery(cq).getResultList();
return events;
}
/**
* Finds all "future" -events, this means also events that are ended under week ago
*
* @return
*/
public List<LanEvent> findFutureEvents() {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<LanEvent> cq = cb.createQuery(LanEvent.class);
Root<LanEvent> root = cq.from(LanEvent.class);
Calendar tmpCal = Calendar.getInstance();
tmpCal.add(Calendar.WEEK_OF_YEAR, -1);
Date compareDate = tmpCal.getTime();
cq.where(
cb.or(
cb.isNull(root.get(LanEvent_.endTime)),
cb.greaterThanOrEqualTo(root.get(LanEvent_.endTime), compareDate)
)
);
return getEm().createQuery(cq).getResultList();
}
public List<LanEvent> findForOrganizer(EventOrganiser organizer) {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<LanEvent> cq = cb.createQuery(LanEvent.class);
Root<LanEvent> root = cq.from(LanEvent.class);
cq.where(cb.equal(root.get(LanEvent_.organiser), organizer));
return getEm().createQuery(cq).getResultList();
}
}