You will only be able to do this if you use bean managed transactions.
In your session bean, here's some starter methods that you can use to start and end
your transactions:
protected int beginTransactionIfRequired(int timeoutInSeconds) {
| UserTransaction tran = this.sessionContext.getUserTransaction();
| int initialTranStatus;
| try {
| initialTranStatus = tran.getStatus();
| switch (initialTranStatus) {
| case Status.STATUS_ACTIVE:
| // we are ok just using the current
transaction.
| break;
| case Status.STATUS_NO_TRANSACTION:
| // create a new transaction.
| try {
|
this.sessionContext.getUserTransaction().setTransactionTimeout(timeoutInSeconds);
| tran.begin();
| } catch (NotSupportedException e) {
| throw new EJBException("Unable to
start transaction: " + e.getMessage());
| }
| break;
| default:
| throw new EJBException("Transaction status
invalid, status is: " + initialTranStatus);
| }
| } catch (SystemException e) {
| throw new EJBException("Unable to begin transaction",e);
| }
| return initialTranStatus;
| }
|
| protected void completeTransactionIfRequired(int initialTransactionStatus) {
| UserTransaction tran = this.sessionContext.getUserTransaction();
|
| if (initialTransactionStatus == Status.STATUS_NO_TRANSACTION) {
| try {
| if (tran.getStatus() == Status.STATUS_MARKED_ROLLBACK)
{
| tran.rollback();
| } else {
| tran.commit();
| }
| } catch(Exception e) {
| throw new EJBException("Unable to complete
transaction",e);
| }
| }
| }
|
|
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