By Jeremy Bolie, Michael Cardella, Stany Blanvalet, Matjaz Juric, Sean Carey, Praveen Chandran, Yves Coene, Kevin Geminiuc, Markus Zirn, Harish Gaur
В книге приведены примеры использования BPEL на различных платформах.
Книжка на английском, но те кто работает с этой технологией обязаны его знать :-)
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Additional resources for BPEL Cookbook
The final status of Customer Update/Addition is returned by use of an explicit reply activity. As you can see, on either side of the business process are web services for adding and updating Siebel and SAP data. These web services, which we designed in Step 1, internally invoke EAI processes. This BPEL process addresses the business requirements of customer management, but it still can't handle exceptions. For example, what would happen if a customer was added successfully in Siebel but addition failed in SAP?
To set the Failed status, the process can catch the SOAP faults thrown by target web services (use a catch handler with each invoke activity). The client invoking the Customer Details Management Module can resend the details in case of any failures. Now, let's see how exceptions are managed: Case 1 If the Siebel query itself fails, the process should be terminated, and the invoking client can retry. Case 2 When customer-details insertion fails in Siebel and succeeds in SAP (they occur in parallel), data consistency will be lost.
Message format: How is the message encoded? • Vocabulary: How should our messages be structured so that other parties can understand and process them?