CrfElmQueryService.java 文件源码

@SuppressWarnings("unchecked")
public List<CrfElmQuery> findByGroupId(Integer project_id, Integer event_id, String instrument) {
    try {
        if(event_id == null){//not required
            return (List<CrfElmQuery>) em.createNamedQuery("CrfElmQuery.findByProjectInstrument")
                .setParameter("project_id", project_id)
                .setParameter("instrument", instrument)
                .getResultList();                                               
        }else{
            return (List<CrfElmQuery>) em.createNamedQuery("CrfElmQuery.findByProjectEventInstrument")
            .setParameter("project_id", project_id)
            .setParameter("event_id", event_id)
            .setParameter("instrument", instrument)
            .getResultList();
        }
    } catch (NoResultException e) {
        return null;
    }
}