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ResourceLocal to JTA

baxhuli pema
Greenhorn

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
Bartender

Joined: Nov 09, 2011
Posts: 1030
    
    5

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


http://docs.oracle.com/javaee/5/tutorial/doc/bnbqw.html
Lucas Smith
Ranch Hand

Joined: Apr 20, 2009
Posts: 804
    
    1

The example of persistence.xml:



SCJP6, SCWCD5, OCE:EJBD6.
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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.


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subject: ResourceLocal to JTA