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

ekusnitz do-not-reply at jboss.com
Thu Oct 26 18:13:16 EDT 2006

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();
Dog d = new Pet(p); ???

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?

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