mysql - Sql 到 hibernate(带 group by 的嵌套查询)

Question

我正在尝试将我的 sql 查询转换为 hibernate 查询

 select * from user_projects where endDate is not null and startDate is not null and soft_delete=? and startDate<=? and 
endDate>=? and endDate<=? and (endDate,user_id) in (select MAX(endDate),user_id from user_projects  
where soft_delete=? group by user_id) ;

我将其转换为 hibernate 代码。 这是我的 hibernate 代码

        List<Staffing> staffing = null;
        SimpleDateFormat df = new SimpleDateFormat("yyyy MM dd");
        String dateString = df.format(duration);
            Date date = df.parse(dateString);

        DetachedCriteria maxDate=DetachedCriteria.forClass(Staffing.class);
        maxDate.setProjection(Projections.projectionList().add(Projections.groupProperty("user")).add(Projections.max("endDate"),"maxDate"));
        Criteria criteria = getCriteria();

        criteria.add(Restrictions.isNotNull("startDate")).add(Restrictions.le("startDate", new Date()));
        criteria.add(Restrictions.isNotNull("endDate")).add(Restrictions.ge("endDate", new Date()));
        criteria.add(Restrictions.eq("softDelete", false));

        criteria.add(Subqueries.le(date, maxDate));
        staffing = criteria.list();
        return staffing;

但是我正在获取对象数组列表。任何人都可以帮我正确转换它。

Answer 1

您好，您可以尝试使用这样的结果转换器

criteria.setResultTransformer(Transformers.aliasToBean(user_projects.class));

但是sql查询返回的属性名称必须与user_projects.class中的属性名称相同