public JTAJobRunShell(JobRunShellFactory jobRunShellFactory,
    Scheduler scheduler,
    SchedulingContext schdCtxt) 
{
        super(jobRunShellFactory, scheduler, schdCtxt);
}

Create a JTAJobRunShell instance with the given settings.

 protected  void begin() throws SchedulerException 
{
        // Don't get a new UserTransaction w/o making sure we cleaned up the old 
        // one.  This is necessary because there are paths through JobRunShell.run()
        // where begin() can be called multiple times w/o complete being called in
        // between.
        cleanupUserTransaction();
        boolean beganSuccessfully = false;
        try {
            getLog().debug("Looking up UserTransaction.");
            ut = UserTransactionHelper.lookupUserTransaction();
            getLog().debug("Beginning UserTransaction.");
            ut.begin();
            beganSuccessfully = true;
        } catch (SchedulerException se) {
            throw se;
        } catch (Exception nse) {
            throw new SchedulerException(
                    "JTAJobRunShell could not start UserTransaction.", nse);
        } finally {
            if (beganSuccessfully == false) {
                cleanupUserTransaction();
            }
        }
}

 protected  void complete(boolean successfulExecution) throws SchedulerException 
{
        if (ut == null) {
            return;
        }
        try {
            try {
                if (ut.getStatus() == Status.STATUS_MARKED_ROLLBACK) {
                    getLog().debug("UserTransaction marked for rollback only.");
                    successfulExecution = false;
                }
            } catch (SystemException e) {
                throw new SchedulerException(
                        "JTAJobRunShell could not read UserTransaction status.", e);
            }
            if (successfulExecution) {
                try {
                    getLog().debug("Committing UserTransaction.");
                    ut.commit();
                } catch (Exception nse) {
                    throw new SchedulerException(
                            "JTAJobRunShell could not commit UserTransaction.", nse);
                }
            } else {
                try {
                    getLog().debug("Rolling-back UserTransaction.");
                    ut.rollback();
                } catch (Exception nse) {
                    throw new SchedulerException(
                            "JTAJobRunShell could not rollback UserTransaction.",
                            nse);
                }
            }
        } finally {
            cleanupUserTransaction();
        }
}

 public  void passivate() 
{
        cleanupUserTransaction();
        super.passivate();
}

Override passivate() to ensure we always cleanup the UserTransaction.