Related Patterns J2EE

Business Delegate

The helper components need to access methods in the business service API. It is also important to reduce the coupling among helpers in the presentation tier and among business services in the business tier. It is recommended that a delegate be used because these tiers may be physically distributed across a network. The delegate hides from the client the underlying details of looking up and accessing the business services, and it may also provide intermediate caching to reduce network traffic.

Dispatcher View and Service to Worker

When centralized control becomes desirable to handle such issues as security, workflow management, content retrieval, and navigation,consider the Dispatcher View or Service to Worker patterns.

Front Controller

This pattern is paired with the View Helper pattern to create the Dispatcher View pattern or Service to Worker pattern.


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