Extra column in subclass

mzoom · **Joined:** Tue Feb 03, 2004 1:49 pm **Posts:** 16

Code:

class A
{
String id;
...
}

class B extends A
{
String extra;
...
}

class C
{
 private A a;
}


...

C c = new C();
c.setA(new B());
...
session.save(C);

..

Problem: How to write a hql query that include the B's extra data??

"select from C as c join c.a as b where b.extra='sth'" is not working.

any idea??

[/code]

immanuel · **Joined:** Tue Jan 13, 2004 4:57 am **Posts:** 83

What happens if you add "where b.class = B "?

mzoom · **Joined:** Tue Feb 03, 2004 1:49 pm **Posts:** 16

still not working.

could it be my mapping problem?

I use the joined-subclass.