Hello,

I'm very new to Hibernate and am actually training with the help of the book
"Java Persistence with Hibernate".
I have a problem understanding a very trivial concept.
If i refer to page 202 of the book, about table per class hierarchy strategy, i should be able to query for CreditCar, by number, for example.
Let's say something like "from CreditCard where number=......', but i get a
Of course, i mapped it (using annotations).
On the other hand, if i query directly on BillingDetails, i get a Did i simply make a stupid typo in my annotations, or is there another way to query on subclasses ?
Thanks in advance.

Actually, this had nothing to do with inheritance, just a plain old pebcak instead !
I omitted to declare my subclasses in hibernate.cfg.xml...

I am trying to do the same thing. Can you please elaborate on your solution and the comments you made about... "i mapped it (using annotations). " and "I omitted to declare my subclasses in hibernate.cfg.xml"

Thanks!

Ok, let's take a simple example :
You have a Person class, extended by Vip.
In Person, your annotations will look like (assuming you have a 'person_type' column to tell you what kind of person you deal with) :



In Vip :



This means that every Vip record will have the value 'VIP' in its personType field.This works fine, but don't forget to declare not only Person but also Vip in your hibernate.cfg.xml file.