Refresh Entity

gistfile1.java

public List<SchoolBus> findAll() {
    CriteriaBuilder criteriaBuilder = getEntityManager().getCriteriaBuilder();
    CriteriaQuery<SchoolBus> criteriaQuery = criteriaBuilder.createQuery(SchoolBus.class);
    Root<SchoolBus> table = criteriaQuery.from(SchoolBus.class);
    TypedQuery<SchoolBus> query = getEntityManager().createQuery(criteriaQuery.select(table).orderBy(criteriaBuilder.asc(table.get("busNumber"))));
    /*
    / Refresh all the school buses
    */
    for (SchoolBus schoolBus : query.getResultList()) {
        schoolBus.getStudents().clear();
        getEntityManager().refresh(schoolBus);
    }
    return query.getResultList();
}

public SchoolBus findById(Long id) {
    SchoolBus schoolBus = getEntityManager().find(SchoolBus.class, id);
    /*
    / Refresh school bus
    */
    schoolBus.getStudents().clear();
    getEntityManager().refresh(schoolBus);    
    return schoolBus;
}