Q&A
| Q1: | Why would you want to use BMTD for a session EJB rather than use CMTD? |
| A1: | You use BMTD when CMTD is too simplistic. Typically this occurs when a stateful session bean starts a transaction in one business method but must complete it in another. |
| Q2: | Why would it be pointless to deploy the getter of a multi-valued CMR field using the RequiresNew transaction attribute? |
| A2: | A returned collection cannot be used outside of the transaction in which it was materialized, as RequiresNew forces a new transaction around the business method. The collection is invalid as soon as it is returned by the business method because the transaction has completed. |
| Q3: | What happens to the current transaction when an EJB throws an application exception? |
| A3: | The bean may or may not mark the transaction for rollback; consult the bean's documentation. |
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