If I change an Entity class in a an appengine project in eclipse, in run time I get this error
Found Meta-Data for [classpath] but this class is not enhanced!! Please enhance the class before running DataNucleus.
Even when I undo the changes and re-run the local srv i get this error.
The only way around it is to get the old .class (using git).
I guess this is a way to prevent a class signature to change while the DB expect the old signature. is this true?
How can I get around it (for example when I want to ad fields to an entity)?
I found this in a thread:
name explicitly all jdo-annotated classes in Project Settings -> Google -> App Engine -> ORM under Eclipse.
It didn't work (or I misunderstood it)