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Chapters 23 and 24

Chapters 23 and 24. Iteration 2 – Quick Analysis Update. From Iteration 1 to 2. Iteration 2 begins with quick update: Use cases – 80% in fully dressed form System sequence diagrams – in the POS case study, add support for third-party external systems with varying interfaces

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Chapters 23 and 24

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  1. Chapters 23 and 24 Iteration 2 – Quick Analysis Update

  2. From Iteration 1 to 2 • Iteration 2 begins with quick update: • Use cases – 80% in fully dressed form • System sequence diagrams – in the POS case study, add support for third-party external systems with varying interfaces • Domain Model – in the Monopoly game case study, include representation of special squares. • System operation contracts

  3. Fig. 23.1 An SSD scenario illustrating external systems

  4. Generalization and Specialization Generalization: the activity of identifying commonality among concepts and defining superclass (general concept) and subclass (specialized concept) relationships. • Generalization-specialization class hierarchy. • Declare superclasses as abstract. • Append the superclass name to the subclass.

  5. Fig. 23.2 Generalization-specialization class hierarchy • A concrete RegularSquare class is also needed.

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