[jboss-user] [EJB 3.0] - Modifying the class of a persisted entity

[ekusnitz]

I am modifying an application where  an ancestor class is persisted before asking the user what type he wants to use, where some types are descendant classes. Once a class is persisted, is it possible to modify the class type to be a descendant class?

For example,

class Pet{}

class Dog extends Pet{}
.....
Pet p = new Pet();
entityManager.persist(p);
.....
Dog d = new Pet(p); ???
entityManager.persist(d);

In general, I can't find a lot of information about how to use inheritance withc EJB3. Can anyone point me to some good links?
TIA

View the original post : http://www.jboss.com/index.html?module=bb&op=viewtopic&p=3981149#3981149

Reply to the post : http://www.jboss.com/index.html?module=bb&op=posting&mode=reply&p=3981149