17.3. Use-Case Realizations for the NextGen Iteration
The following sections explore the choices and decisions made while designing a use-case realization with objects based on the GRASP patterns. The explanations are intentionally detailed, in an attempt to illustrate that there does not have be any “hand waving” in the creation of well-designed interaction diagrams; their construction is based on justifiable principles.
Notationally, the design of objects for each system event message will be shown in a separate diagram, to focus on the design issues of each. However, they could have been grouped together on one sequence diagram.
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