休眠DetachedCriteria子查询中带有和子句的查询

Question

如何使用Hibernate的分离标准解决此查询？对我来说最难的部分是将and u1.abrechnungsDatum is null纳入子选择。 我想这样的查询：

select * 
from 
    patient as p 
where 
    p.krankenstand = ? 
and 
    ? < (select count(*) from ueberweisung u1 where p.id = u1.patient_id 
     and u1.abrechnungsDatum is null) 

我有这个

DetachedCriteria dc = DetachedCriteria.forClass(Patient.class, "patient"); 
dc.add(Restrictions.eq("krankenstand", true)); 

DetachedCriteria nab = dc.createCriteria("ueberweisungs", "nab"); 
nab.add(Restrictions.isNull("nab.abrechnungsDatum")); 
dc.add(Restrictions.sizeGt("ueberweisungs", 0)); 

这给了我下面的SQL语句试过

select 
    * 
from 
    patient this_ 
inner join 
    ueberweisung nab1_ 
     on this_.id=nab1_.patient_id 
where 
    this_.krankenstand=? 
    and nab1_.abrechnungsDatum is null 
    and ? < (
     select 
      count(*) 
     from 
      ueberweisung 
     where 
      this_.id=patient_id 
    ) 

正如你所看到的，和 - 字段abrechnungsDatum不适用于子选择。我怎样才能做到这一点呢？

Answer 1

试试这个：

DetachedCriteria dc = DetachedCriteria.forClass(Patient.class, "patient"); 
dc.add(Restrictions.eq("krankenstand", true)); 

DetachedCriteria subquery = DetachedCriteria.forClass(Ueberweisung.class); 
subquery.add(Restrictions.isNull("abrechnungsDatum")); 

dc.add(Subqueries.ltAll(0, subquery));