/**
*
* @author ilya portnyagin iportnyagin@gmail.com
*/
package ru.portnyagin.helpdeskru.service;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Root;
import ru.portnyagin.helpdeskru.model.FileHD;
import ru.portnyagin.helpdeskru.model.FileHD_;
import ru.portnyagin.helpdeskru.model.Request;
@Stateless
public class FileHDService extends AbstractService<FileHD> {
@PersistenceContext(unitName = "HelpDeskRuPU")
private EntityManager em;
protected EntityManager getEntityManager() {
return em;
}
public FileHDService() {
super(FileHD.class);
}
public List<FileHD> findByRequest(Request request) {
CriteriaBuilder cb = getEntityManager().getCriteriaBuilder();
CriteriaQuery cq = cb.createQuery();
Root<FileHD> z = cq.from(FileHD.class);
cq.where(cb.equal(z.get(FileHD_.request), request));
cq.select(z);
return getEntityManager().createQuery(cq).getResultList();
}
}