Hi,

im searching for hours but i don't found any breadcrumb to solve my problem. i'm in trouble with a PostInsertEventListener

I have a custom PostInsertEventListener which should create/save another domain object:



I 'm expecting, that my new AnOtherDomainObject() is 'attached' to my current session and it will by created after Transaction.commit(). But nothing happens.
My DomainObject) is created correctly but it seems tha hibernate ignores my AnOtherDomainObject.

How can I attach/save/create new AnOtherDomainObject in a PostInsertEventListener in my current Session and/or transactional Context? This drives me crazy.

I think i have to use the postinserteventlistener cause i need the generated entity-ID.

Any ideas?

Thanks in advance,
Kuni

I have similar problem but I recived org.hibernate.util.JDBCExceptionReporter logExceptions

ventListenerorg.hibernate.exception.GenericJDBCException: could not insert:

Kind of locking problem.

Have you solved your problem by a chance?


cheers

Hi Kuni,

I think you CANNOT add an entity into the current session whilest Hibernate is in the state of persisting the objects of the current session.

I think you have to ressort to another mechanism. You must either open a new session and/or you could have some asynchronous listener which would create the desired entity in another Hibernate session. So your PostInsertEventListener would just create the new object and hand it over to the said listener.

I tried opening new session but it didnt help. While inserting a new row to database it trigers deadlock error:

Hibernate: insert into simple_log_table (time, id_of_inserteditem) values (?, ?)

Oct 16, 2008 9:51:13 AM org.hibernate.util.JDBCExceptionReporter logExceptions
WARNING: SQL Error: 1205, SQLState: 41000
Oct 16, 2008 9:51:13 AM org.hibernate.util.JDBCExceptionReporter logExceptions
EXCEPTION: PostInsertCustomListener ventListenerorg.hibernate.exception.GenericJDBCException: could not insert: [pl.com.ambsoft.sagro.bo.HistoriaGroby]
SEVERE: Lock wait timeout exceeded; try restarting transaction
Oct 16, 2008 9:51:13 AM org.hibernate.AssertionFailure <init>


Here is body of my onPostInsert listener's body:

if ( event.getEntity() instanceof LogableObject ) {
SessionFactory sessionFactory = Dao.getSessionFactory();
Session s = sessionFactory.openSession();
Transaction tx = s.beginTransaction();

try {

LogableObject curLogableObject = (LogableObject)event.getEntity() ;

System.out.print(curLogableObject.getId()); // it is ok
Date d = Calendar.getInstance().getTime();

LogingEntity hg = new LogingEntity();
hg.setTime(d);
hg.setId_of_inserteditem)(curLogableObject.getId());
s.save(hg);
tx.commit();

} catch (Exception e) {
System.out.println( e);
tx.rollback();
} finally {
s.flush();
s.close();
s = null;
tx=null;
}


thanks for any help

Hi Kuni - actually your example helped me solved my problems even it want working in the begining.
Here is an example of your idea working ;) (hibernate version 3.3):


You are right: no commits, flushes etc. are required.

BTW: A question to hibernate developers team : It seems event.getSession() is depracated - how should I replace it in the future?

Thank you for help.

radek