ID-generate param only in persistent root class?

jensbruhn · **Joined:** Wed Mar 30, 2005 5:41 am **Posts:** 6

Hello all,

i have one rootclass, let's call it PersistentObjectIF, which is doing some protection stuff. I do not want this class to be persistent.

My second class, let's call it Person, is inherited from PersistentObjectIF.

When I add the ID to Person or PersistentObjectIF like

Code:

@Id
private long objId = 0

everything works.

But when I try to add this:

Code:

@Id(generate=GeneratorType.AUTO)
 private long objId = 0;

I will get an exception:
Caused by: org.hibernate.InstantiationException: could not instantiate test objectcom....
at org.hibernate.engine.UnsavedValueFactory.instantiate(UnsavedValueFactory.java:25)
at org.hibernate.engine.UnsavedValueFactory.getUnsavedIdentifierValue(UnsavedValueFactory.java:44)
at org.hibernate.tuple.PropertyFactory.buildIdentifierProperty(PropertyFactory.java:41)
at org.hibernate.tuple.EntityMetamodel.<init>(EntityMetamodel.java:104)
...

This only works, if I add the @Id(generate=GeneratorType.AUTO) to Person and if Person is NOT inherited from my PersistentObjectIF class.

Any ideas?

Thanks a lot,
jens

emmanuel · **Posted:** Thu Mar 31, 2005 7:09 pm

Can you clarify this case for me. Even better send a proper working test case in JIRA?
Thanks