Hi,

For a client I need to support the following using either Hibernate or some other variant maybe using CGLIB or ASM or freemaker:

The system should support update of the database schema and Hibernate mapping at runtime. Meaning, if I have a Hibernate entity "Animal" with properties A and B I should support the addition and deletion of properties during runtime. e.g. after the transformation the Entity can have property A deleted and property C added. This means of course that :

1-The Entity *Class* itself should be re-generated in memory on the fly with **JPA annotations** for each field. I started testing using CGLIB and one other option is FreeMaker for generating a java source file and then compiling it at runtime.

Recommendations are highly regarded.

2-After that I need somehow to unload the existing "Animal" instances, stop all pending transactions which reference those classes and then