posted 14 years ago
Hello,
I have an abstract class called AbstractActivity that doesn't map to any tables. I have two concrete classes AActivity and BActivity that map to two separate tables.
Here is the mapping of AActivity
I have a very similar mapping for BActivity. I want to keep these two entities separate in db.
Now here is the code for AActivity:
and here is the code for AbstractActivity
Now when i create an object from AActivity or BActivity and save it, there is no problem, everything is saved in db.
but I get an exception if i try to call any queries in AActivity's or BActivity's mapping file. Here is the exception:
Does "java.lang.InstantiationException: org.hibernate.impl.QueryImpl " mean that hibernate cannot understand the way my code is structured and hence cannot instantiate it?
I also tried
but no luck.
Any ideas?
thanks in advance