使用nHibernate中的条件创建联接

Question

Using nHibernate criteria, I want to create a join between two entities which have a foreign key relationship but do not have entity relationship.

EmployerEntity

1. EmployerID
2. EmployerName

LocationEntity

1. LocationID
2. EmployerID
3. LocationName

SQL equivalent query is

Select EMP.EMP_Name from TBL_EMP as EMP inner join TBL_LOC as LOC on EMP.EMP_ID = LOC.EMP_ID

Answer 1

It's not designed to work this way. Why are you not including the entity relationship?

If the relationship was clearly out of the question you could potentially use a cartesian product instead of a join.

HQL

select emp.EmployerName
from Employer as emp, Location as loc
where emp.EmployerID = loc.EmployerID

HQL reference: http://docs.jboss.org/hibernate/orm/3.3/reference/en/html/queryhql.html#queryhql-from