休眠條件api'選入'

Question

是否可以創建一個'select in-query'與hibernate critiria api？

例子： 我有一個1兩個表：N的關係，公司和部門

select * from company c where c.id in (select company_id from department d 
where d.departmentname = 'HR' and d.location = 'xyz') 

Answer 1

您可以使用將這個DetachedCriteria

DetachedCriteria subCriteria= DetachedCriteria.forClass(Departament.class); 
    subCriteria.add(Property.forName("departmentname ").eq("HR")); 
    subCriteria.add(Property.forName("location ").eq("xyz")); 
    subCriteria.setProjection(Projections.property("company_id ")); 

DetachedCriteria criteria = DetachedCriteria.forClass(Company.class); 
    criteria.add(Property.forName("id").in(subCriteria));