• 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 all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Paul Clapham
  • Ron McLeod
  • Bear Bibeault
  • Liutauras Vilda
Sheriffs:
  • Jeanne Boyarsky
  • Tim Cooke
  • Junilu Lacar
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Stephan van Hulst
  • Jj Roberts
  • Carey Brown
Bartenders:
  • salvin francis
  • Frits Walraven
  • Piet Souris

Can I use resource local application managed EntityManager in SB?

 
Ranch Hand
Posts: 126
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I tried and encountered an error:

Caused by: javax.persistence.PersistenceException: No Persistence provider for EntityManager named JPA2: The following providers:
oracle.toplink.essentials.PersistenceProvider
oracle.toplink.essentials.ejb.cmp3.EntityManagerFactoryProvider
Returned null to createEntityManagerFactory.
at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:154)

I am not sure I config everything right and I doubt it's prohibited by the spec. I'd appreciate any help.
 
Ranch Hand
Posts: 342
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
You need to use an application managed entity manager: Inject an entity manager factory using @PersistenceUnit and create the entity manager via the entity manager factory's createEntityManager() method. Don't forget to set transaction-type="RESOURCE_LOCAL" in the persistence.xml file.
 
Mellon Sun
Ranch Hand
Posts: 126
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I did what you say.

OK, I believe you proved I am right. I have to go on for the exam, I am running out of the time.

Thank you.
[ December 20, 2008: Message edited by: Mellon Sun ]
 
I am a man of mystery. Mostly because of this tiny ad:
the value of filler advertising in 2020
https://coderanch.com/t/730886/filler-advertising
reply
    Bookmark Topic Watch Topic
  • New Topic