Patterns: Building Serial and Parallel Processes for IBM WebSphere Process Server V6

502 Patterns: Building Serial and Parallel Processes for IBM WebSphere Process Server V6

Scenario implementation overview

In this appendix, we build Web service implementations for Wholesaler A and

Wholesaler B. These Web service implementations are used by the ITSO

Electronics organization in Part 3 of this book.

Both Wholesaler A and Wholesaler B implement three business functions:

򐂰 Get Delivery Days

򐂰 Place Order

򐂰 Cancel Order

In Wholesaler A, this business logic is implemented in WS-BPEL processes and

a business rule. In Wholesaler B, this logic is implemented in a Java class. The

business logic in both wholesalers is exposed with a SOAP over HTTP

(SOAP/HTTP) Web services interface. ITSO Electronics acts as a Web services

consumer, sending SOAP/HTTP messages to communicate with the

wholesalers.

Appendix A. Building Wholesaler A and B service implementations 503

In this appendix, we build the business logic for Wholesaler A and Wholesaler B,

and then expose this business logic with a Web services interface. This is shown

in Figure A-1.

Figure A-1 Implementation of Wholesaler A and Wholesaler B

WholesalerA

Module

PlaceOrder_Export

Web Service

DelDays_Export

Web Service

Place Order

WS-BPEL

Del Days

WS-BPEL

CancelOrder_Export

Web Service

Cancel Order

Business Rule

WholesalerB

Module

PlaceOrder_Export

Web Service

DelDays_Export

Web Service

Place Order

Java class

Del Days

Java class

CancelOrder_Export

Web Service

Cancel Order

Java class

ITSOElectronics

Module

WhA_DelDays_Import

Web Service Call

WhA_PlaceOrd_Import

Web Service Call

WhA_DelDays_Import

Web Service Call

WhA_DelDays_Import

Web Service Call

WhA_PlaceOrd_Import

Web Service Call

WhA_DelDays_Import

Web Service Call