Financial transaction execution flow

The Financial transaction execution flow illustrates how a financial transaction occurs, and how HCL Commerce interacts with the payment plug-in.

1. The external application, such as HCL Commerce, requests an approve transaction.
2. The Payment plug-in controller looks up the Payment that the approve transaction will be executed against.
3. The Payment plug-in controller looks up the PaymentInstruction that will service the request.
4. The Payment plug-in controller creates a FinancialTransaction that describes the approve transaction.
5. The Payment plug-in controller finds the target plug-in to process the financial transaction.
6. The Payment plug-in controller creates a PluginContext object with the plug-in deployment descriptor data.
7. The Payment plug-in controller invokes the Plugin.approve() method.
8. The plug-in returns the updated FinancialTransaction or throws an exception.
9. The plug-in returns the results to the external application.