Hibernate Criteria加入查询

Question

如何从以下sql创建Hibernate条件查询？

String hql = "select e.employeeId,m.meetingId,e.firstname from Employee e join e.meetings m";

有人可以提供相应的标准查询吗？

Answer 1

条件查询是:

Criteria c = session.createCriteria(Employee.class, "e");
c.createAlias("e.meetings", "m"); // inner join by default
c.setProjection( Projections.distinct( Projections.projectionList()
            .add( Projections.property("e.employeeId"), "employeeId")
            .add( Projections.property("m.meetingId"), "meetingId")
            .add( Projections.property("e.firstname"), "firstname")));