Core J2EE™ Patterns: Best Practices and Design Strategies

Service to Worker

Context

The system controls flow of execution and access to business data, from which it creates presentation content.

Note

The Service to Worker pattern, like the Dispatcher View pattern, describes a common combination of other patterns from the catalog. Both of these macro patterns describe the combination of a controller and dispatcher with views and helpers. While describing this common structure, they emphasize related but different usage patterns.

Problem

The problem is a combination of the problems solved by the Front Controller and View Helper patterns in the presentation tier. There is no centralized component for managing access control, content retrieval, or view management, and there is duplicate control code scattered ...