RepositoryCRUD.java 文件源码

public default List<E> findRange(Long from, Long to) {
    EntityManager entityManager = getEntityManager();
    CriteriaBuilder criteriaBuilder = entityManager.getCriteriaBuilder();

    CriteriaQuery criteriaQuery = criteriaBuilder.createQuery();
    criteriaQuery.select(criteriaQuery.from(getEntityClass()));
    TypedQuery<E> query = entityManager.createQuery(criteriaQuery);
    query.setMaxResults(Math.toIntExact(to - from + 1));
    query.setFirstResult(Math.toIntExact(from));

    return query.getResultList();
}