cannot update/save

storm · **Joined:** Mon Aug 03, 2009 3:10 pm **Posts:** 7

Hello
i get an error when trying to save/update information into db.
i used debug and traced the problem in hibernateTemplate class:

Code:

..
//create session
      System.out.println("session: " +session);
//begin transaction
      System.out.println("begin transaction...");
      Serializable id = session.save(entity);

      session.getTransaction().commit();
   ...

in Console the last message is "begin transaction..." and then i get this error:

Quote:

org.hibernate.MappingException: Unknown entity: domain.blabla
org.hibernate.impl.SessionFactoryImpl.getEntityPersister(SessionFactoryImpl.java:550)
org.hibernate.impl.SessionImpl.getEntityPersister(SessionImpl.java:1338)
org.hibernate.event.def.AbstractSaveEventListener.saveWithGeneratedId(AbstractSaveEventListener.java:98)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.saveWithGeneratedOrRequestedId(DefaultSaveOrUpdateEventListener.java:187)
org.hibernate.event.def.DefaultSaveEventListener.saveWithGeneratedOrRequestedId(DefaultSaveEventListener.java:33)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.entityIsTransient(DefaultSaveOrUpdateEventListener.java:172)
org.hibernate.event.def.DefaultSaveEventListener.performSaveOrUpdate(DefaultSaveEventListener.java:27)
org.hibernate.event.def.DefaultSaveOrUpdateEventListener.onSaveOrUpdate(DefaultSaveOrUpdateEventListener.java:70)
org.hibernate.impl.SessionImpl.fireSave(SessionImpl.java:535)
org.hibernate.impl.SessionImpl.save(SessionImpl.java:523)
org.hibernate.impl.SessionImpl.save(SessionImpl.java:519)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
java.lang.reflect.Method.invoke(Method.java:585)
org.hibernate.context.ThreadLocalSessionContext$TransactionProtectionWrapper.invoke(ThreadLocalSessionContext.java:301)
$Proxy0.save(Unknown Source)
hibernate.HibernateTemplate.save(HibernateTemplate.java:84)
services.persistence.hibernate.HibernateServiceImpl.saveX(HibernateServiceImpl.java:41)
services.business.ServiceImplementation.saveX(ServiceImplementation.java:37)
web.MyServlet.save(MyServlet.java:118)
web.MyServlet.doPost(MyServlet.java:283)
javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
javax.servlet.http.HttpServlet.service(HttpServlet.java:729)

The data that i want to update the db with exits, but it just not save. The domain.blabla is mapped in hibernate xml config file
Any ideas? thank you

Cameron McKenzie · **Posted:** Wed Sep 16, 2009 9:00 am

Quote:

org.hibernate.MappingException: Unknown entity: domain.blabla

Looks like a class references this particular class, but it's not included as an added annotated object or in your hibernate mapping file, depending upon the approach your are taking. Can you see where this class is mapped? It might be a case sensitivity problem. I hate to see classes that start with lower class names.

storm · **Joined:** Mon Aug 03, 2009 3:10 pm **Posts:** 7

i have the hbm.xml class created. in hibernate config xml i declare:

Code:

in debug i can see that this Machine.hbm.xml is recognized.

And by the way...previous to the err ahead i have this:

Quote:

DEBUG DefaultSaveOrUpdateEventListener(entityIsDetached:205) - updating detached instance
ERROR StandardWrapperValve(invoke:260) - Servlet.service() for servlet MyServlet threw exception
org.hibernate.MappingException: Unknown entity....

I can show data from database, create the session, begin transaction, but when at the commit it breaks.

storm · **Joined:** Mon Aug 03, 2009 3:10 pm **Posts:** 7

problem solved: had the ..entity-name=".." declare in the hbm.xml class. after i deleted it, it worked.

Cameron McKenzie · **Posted:** Fri Sep 18, 2009 7:26 pm

Sometimes small issues are the toughest ones to find. So glad you got this working!