JpaCriteriaHelper.java 文件源码

/**
 * Obtem lista com os resultados
 * @return Lista de resultados
 */
public List<T> getResults() {
    CriteriaQuery<T> criteriaQuery = criteriaBuilder.createQuery(entityClass);
    Root<T> root                   = criteriaQuery.from(entityClass);
    setupQuery(criteriaQuery, root);

    // ORDER BY
    if ( ! orders.isEmpty() ) {
        ArrayList<Order> jpaOrders = new ArrayList<>();
        for (OrderEntry orderField : orders) {
            if ( orderField.order.equals(OrderDirection.ASC) ) {
                jpaOrders.add( criteriaBuilder.asc(getPath(orderField.fieldNames, root)));
            } else {
                jpaOrders.add( criteriaBuilder.desc(getPath(orderField.fieldNames, root)));
            }
        }
        criteriaQuery.orderBy( jpaOrders );
    }

    if ( pageNumber != null ) {
        return em.createQuery(criteriaQuery).setFirstResult( (pageNumber - 1) * pageSize ).setMaxResults(pageSize)
                        .getResultList();
    } else {
        return em.createQuery(criteriaQuery).getResultList();
    }
}