Using Transactions

The following diagram shows the sequence of calls, which external system shall perform for the following purposes:

• To execute the POA Public API methods within the bounds of transaction.
• To obtain the overall status of tasks scheduled after transaction commit.

  

1. txn.Begin opens a transaction.
2. On this step external system calls a set of POA Public API methods.
3. txn.Commit closes a transaction. POA schedules and runs a set of tasks.
4. pem.getRequestStatus retrieves the overall status of tasks scheduled on previous step.