NewsGroupFacade.java
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package fi.insomnia.bortal.facade;
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.NewsGroup;
import fi.insomnia.bortal.model.NewsGroup_;
@Stateless
@LocalBean
public class NewsGroupFacade extends IntegerPkGenericFacade<NewsGroup> {
public NewsGroupFacade() {
super(NewsGroup.class);
}
@EJB
private EventBeanLocal eventbean;
public NewsGroup findByName(String name) {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<NewsGroup> cq = cb.createQuery(NewsGroup.class);
Root<NewsGroup> root = cq.from(NewsGroup.class);
cq.where(cb.equal(root.get(NewsGroup_.event), eventbean.getCurrentEvent()),
cb.equal(root.get(NewsGroup_.name), name)
);
NewsGroup ret = getSingleNullableResult(getEm().createQuery(cq));
if (ret == null) {
ret = new NewsGroup(eventbean.getCurrentEvent());
ret.setName(name);
this.create(ret);
}
return ret;
}
public List<NewsGroup> findNews() {
CriteriaBuilder cb = getEm().getCriteriaBuilder();
CriteriaQuery<NewsGroup> cq = cb.createQuery(NewsGroup.class);
Root<NewsGroup> root = cq.from(NewsGroup.class);
cq.where(cb.equal(root.get(NewsGroup_.event), eventbean.getCurrentEvent()));
return getEm().createQuery(cq).getResultList();
}
}