Win a copy of Beginning Java 17 Fundamentals: Object-Oriented Programming in Java 17 this week in the Java in General forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Tim Cooke
  • Campbell Ritchie
  • Ron McLeod
  • Liutauras Vilda
  • Jeanne Boyarsky
Sheriffs:
  • Junilu Lacar
  • Rob Spoor
  • Paul Clapham
Saloon Keepers:
  • Tim Holloway
  • Tim Moores
  • Jesse Silverman
  • Stephan van Hulst
  • Carey Brown
Bartenders:
  • Al Hobbs
  • Piet Souris
  • Frits Walraven

JPA-Hibernate - EntityExistsException Question

 
Greenhorn
Posts: 12
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
We recently converted our EJB2.1 application to EJB3 (Jboss 4.2.CP07) and landed in to a problem with EntityExistsException Vs DuplicateKeyException (EJB2).
Earlier with EJB2 we were able to do operation like

try{
<EntityHome>.create(<some object>);
} catch (DuplicateKeyException ex) {
Do some other task ..involving database
}

When we converted to EJB3 ..the code looks like below

try{
em.persist(<some PO>);
} catch (EntityExistsException ex) {
Do some other task ..using em

}

In second case we learnt that we couldn't do any more operations on the em as the transaction is closed, is this the expected behavior?
If yes can anyone please suggest a different way to handle these scenarios ?
 
Greenhorn
Posts: 18
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
It's not whether the session is closed or opened, It's JPAs way to handle duplicates.
This exception is thrown when you try to persist a duplicate entity.

try {
entityManager.create(Obj) ;
}
catch(EEE e) {
}


Rgds
Mahesh PS
 
Consider Paul's rocket mass heater.
reply
    Bookmark Topic Watch Topic
  • New Topic