12.1 Business scenario

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In this scenario, ABC Electronics has a legacy system running some of its core business processes. 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 6.2.2, "Stage II: Internal ordering on demand with delivery date" on page 119. The retail system must access, in real time, an existing wholesale system to check the availability of a product and obtain its estimated delivery date. For the scenario covered in this chapter, the legacy wholesale system is a CICS server located on the internal network.

If possible, it is preferable to use off-the-shelf products to provide connectivity between the J2EE application server and CICS 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 J2EE Connector to CICS implementation, see the redbook Patterns: Self-Service Application Solutions Using WebSphere Application Server V5, SG24-6591.

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