The moose likes EJB and other Java EE Technologies and the fly likes ResourceLocal to JTA Big Moose Saloon
  Search | Java FAQ | Recent Topics | Flagged Topics | Hot Topics | Zero Replies
Register / Login

Win a copy of Java Interview Guide this week in the Jobs Discussion forum!
JavaRanch » Java Forums » Java » EJB and other Java EE Technologies
Bookmark "ResourceLocal to JTA" Watch "ResourceLocal to JTA" New topic

ResourceLocal to JTA

baxhuli pema

Joined: Nov 09, 2012
Posts: 11
I am developing an web application and I have to use JTA which I never used. I started using EntityManager but it seems not to work here. When I use EntityManager I get this message:

To cut it short, I have this piece of code:

How can I do this without EntityManager?
James Boswell

Joined: Nov 09, 2011
Posts: 1051

I assume you have a persistence.xml file on your classpath? This is where you define the transaction type.
Lucas Smith
Ranch Hand

Joined: Apr 20, 2009
Posts: 808

The example of persistence.xml:

Mahendr Shinde
Ranch Hand

Joined: Sep 03, 2011
Posts: 38

Hi baxhuli ,
Are you trying JPA inside a simple web application? In case you are trying to run it web application or java project, you must be using "Resource_local". Which means @PersistenceContext annotation might not work!
An EJB Application provides JTA resource and annotation to inject EntityManager.

There is still lot to learn!
I agree. Here's the link:
subject: ResourceLocal to JTA
It's not a secret anymore!