将 oracle 游标转换为 jpa 条件查询

Question

我有办法在 java jpa 条件查询中写这个游标...

   cursor main_1 is

    select join_date,sum(tot_sal),emp_name
    from emp_datail,emp_join
    where emp_id=emp_join_id and join_date=to_date('14/02/2015','dd/mm/yyyy')
    and per_sal>100000
    group by join_date,emp_name

提前致谢。

Answer 1

CriteriaBuilder cb = em.getCriteriaBuilder();
    CriteriaQuery<Object[]> cq = cb.createQuery(Object[].class);
    Root<Org> orgRoot = cq.from(Org.class);
    Join<Org, Dept> ord = orgRoot.join("dept");
    cq.multiselect(orgRoot.get("orgname"), ord.get("deptname"),
            cb.sum(ord.<Integer> get("deptamt"))).groupBy(
            orgRoot.get("orgname"));

    Query qry = em.createQuery(cq);
    List<Object[]> orgList = qry.getResultList();

将 oracle 游标转换为 jpa 条件查询

Converting oracle cursor to jpa criteria query

java

jpa

criteria