• 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:
  • Campbell Ritchie
  • Paul Clapham
  • Ron McLeod
  • Jeanne Boyarsky
  • Tim Cooke
Sheriffs:
  • Liutauras Vilda
  • paul wheaton
  • Henry Wong
Saloon Keepers:
  • Tim Moores
  • Tim Holloway
  • Stephan van Hulst
  • Carey Brown
  • Frits Walraven
Bartenders:
  • Piet Souris
  • Himai Minh

Problem while injecting EntityManager

 
Greenhorn
Posts: 2
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I have an EJB bean TestBean



I tried using EntityManager to create a query, it throws null pointer exception.
Tried getting entityManager from EntityManagerFactory also null pointer exception, I don't know what's missing, here is my persistence.xml:



And yes it is located in META-INF folder.
Any help please??

The exception:
 
Sheriff
Posts: 22650
126
Eclipse IDE Spring VI Editor Chrome Java Windows
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Your injection doesn't seem to be the problem, otherwise the NullPointerException would have been caused by your code, but instead it comes from inside the EntityManager.
 
Mona Yehia
Greenhorn
Posts: 2
  • Likes 1
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
I found the problem
The JTA platform property was missing, I added this to my persistence.xml as I am using glassfish & it worked
 
This looks like a job for .... legal tender! It says so right in this tiny ad:
Free, earth friendly heat - from the CodeRanch trailboss
https://www.kickstarter.com/projects/paulwheaton/free-heat
reply
    Bookmark Topic Watch Topic
  • New Topic