小编Pre*_*rem的帖子

不使用CriteriaQuery#select():

public List<Address> getAddressOfManager(String designation, String name, String orderByColumn) {

    Boolean ascending = false;
    CriteriaBuilder cb = emanager.getCriteriaBuilder();
    CriteriaQuery<Address> cq = cb.createQuery(Address.class);
    Root<Address> root = cq.from(Address.class);
    //cq.select(root);  <-------------
    Join<Address, Employee> employeeAddress = root.join(Address_.employee);
    Join<Employee,Project> employeeProject = employeeAddress.join(Employee_.project);
    cq.where(cb.or(cb.equal(employeeProject.get(Project_.name), name),cb.equal(employeeAddress.get(Employee_.designation), designation)));
    Order order = ascending ? cb.asc(root.get(orderByColumn))
            : cb.desc(root.get(orderByColumn));
    cq.orderBy(order);
    List<Address> result = emanager.createQuery(cq).getResultList();
    return result;
}

用CriteriaQuery#select():

public List<Address> getAddressOfManager(String designation, String name, String orderByColumn) {

    Boolean ascending = false;
    CriteriaBuilder cb = emanager.getCriteriaBuilder();
    CriteriaQuery<Address> cq …