TIBCO Architecture Fundamentals

Chapter 13. ActiveMatrix Policy Framework

Aspect-Oriented Design

Sometimes you need to introduce functionality into a process, but that functionality is not a fundamental part of the mainstream process. As an example, consider the Account Management Service from our earlier discussion of the ATM System architecture (Figure 13-1). To avoid unauthorized access to the service operations, you want to add some control over who is able to call them. In other words, you want to introduce a policy that governs access to the service. However, you’d like to accomplish this without modifying the basic design. Furthermore, you want to keep the concerns associated with access control separate from those of the core business processes. This is the idea behind ...