6.5. Guidelines for Integration

Now that we've examined integration design approaches and techniques, let's look at some guidelines for integrating enterprise applications with EIS systems.

We examine guidelines for integrating legacy systems, particularly home-grown systems, and guidelines for using command beans. Although not as common, we mention guidelines for achieving integration by using metadata, registries, and versioning and evolution.

6.5.1. Integrating Custom Legacy Systems

Most enterprises have home-grown or custom EISs, also referred to as one-off systems, and these systems need to be integrated. As we have already seen, connectors are the best solution for integrating EISs in a J2EE environment. However, because these are custom ...

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