13.1 Business scenario

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In this scenario, ABC Electronics has a legacy system running some of its core business processes that is accessible using existing messaging middleware infrastructure. The intention is not to replace or re-engineer this system, but to allow more modern and flexible J2EE applications to reuse the important business processes that this core system hosts. The goal is to leverage legacy systems in a way that enables ABC Electronics to be responsive to their customer's needs.

The integration functionality to be implemented is explained in 6.2.1, "Stage I: Internal ordering on demand" on page 116. The internal retail ordering system needs to be integrated with the internal wholesale system to update inventory as replenishment orders are placed. For the scenario covered in this chapter, the legacy wholesale system is accessible on the internal network using existing IBM WebSphere MQ infrastructure.

If possible, it is preferable to use off-the-shelf products to provide connectivity between the J2EE application server and the wholesale system because they are usually faster to implement, and have wider support and lower costs.

Note

We didn't implement this solution in the ABC Electronics sample application provided with this redbook. For a sample JMS and WebSphere MQ implementation, see the redbook Patterns: Self-Service Application Solutions Using WebSphere Application Server V5, SG24-6591.

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