Hi Yu,
This is not expected behavior. You should be able to detach and merge your
entity into a new persistence context.
The error you're getting is because you have a value specified in a
GeneratedField (ie in your entity you have @GeneratedValue on the field).
The field in question is
Hi mike,
Yes, id field with @GeneratedValue(strategy=GenerationType.AUTO)
annotation is the primary key field and I didn't serialize the
entity.
I just modified some fields of the entity in the same VM and try to
merge the entity into a new context.
Regards,
Yu Wang
On Tue, Jul 14, 2009 at 9:38