6.4. System Architecture: Layers Upon Layers
To ensure that its applications are channel-neutral, Codexa has layered its application architecture and centered business logic in the application server. This allows the applications to interface with new devices and standards without affecting the core business logic. Of course, the J2EE platform provides a natural fit for this kind of architecture because it is inherently layered.
Figure 6.1 illustrates the layering and partitioning within the Codexa system.
Figure 6.1. Codexa System Architecture
In the Codexa Service, incoming requests from users or outgoing notifications are handled through a Web ...
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