From: Steven Van Impe <steven.vanimpe_at_icloud.com>
Date: Mon, 09 Dec 2013 16:32:13 +0100

Hi everyone,

I’m trying to figure out the difference between:

@Path("test")
@Stateless
public class Test
{
    @PersistenceContext
    private EntityManager em;
    
    @GET
    public void test()
    {
        // …
        throw new BadRequestException("Some message");
    }
}

and

@Path("test")
@Transactional(dontRollbackOn=BadRequestException.class)
public class Test
{
    @PersistenceContext
    private EntityManager em;
    
    @GET
    public void test()
    {
        // …
        throw new BadRequestException("Some message");
    }
}

with regard to transactions. Is the transaction rolled back in the EJB case? Are the changes in // …. ever committed?

This question came up in a discussion regarding https://java.net/jira/browse/GLASSFISH-20699. The second case was proposed as a workaround, because throwing a BadRequestException currently causes a 500 Internal Server Error (the result of a RollbackException) response instead of the expected 400 Bad Request response.

Regards,

---
Steven Van Impe
Lecturer @ University College Ghent, Belgium
@sipofjava
http://asipofjava.blogspot.com/