休眠条件 api '选择在' [英] Hibernate criteria api 'Select in'

问题描述

是否可以使用 hibernate critiria api 创建一个select in"查询?

is it possible to create a 'select in'-query with the hibernate critiria api ?

示例:我在 1:n 关系中有两个表，公司和部门

Example : I have two tables in a 1:n relation, company and department

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

推荐答案

你可以使用这个 DetachedCriteria

You can use for this 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));

这篇关于休眠条件 api '选择在'的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！