Hi

I work with a hibernate spring application. I have a student domain object and school object. In student, I have the following mapping


In this case, the column 'identifier' is not the primary key of table School.

Here I am able to use student.getSchool() outside the session in a view template.

However, if the column 'identifier' becomes the primary key of the table School

the code student.getSchool() outside the session in a view template causes LayInitialization Exception

Can any one please help me in understanding this. It is driving me crazy!

I would be vv thankful if someone explains whats happening here

Thanks
Priya

As you define @ManyToOne(fetch = FetchType.LAZY) the School instance is not read from database together with your Student instance. Hibernate tries to read the school as latest as possible, which is the moment where you explicitly call
student.getSchool().
But In this moment, as you state, you are not in session anymore.
But hibernate needs a session in order to can read the school-instance from the persistence,
therefore a LazyInitialization Exception is thrown.
Hope this explanation was clear.