CSC509 Lecture 04

Software Design
Connecting the Dots
(202310)

Transcript

1. jgs CSC 509 Software Engineering II: Modeling and Design Lecture 04: Connecting the Dots Dr. Javier Gonzalez-Sanchez javiergs@calpoly.edu www.javiergs.com Building 14 -227 Office Hours: By appointment
2. jgs Previously…
3. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 3 Relationships Association Directed Association Reflexive Association Multiplicity Aggregation Composition Generalization Realization
4. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 4 Relationships Association Directed Association Reflexive Association Multiplicity Aggregation Composition Generalization Realization
5. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 5 Design Principles There are five key design principles to consider in Object-Oriented: § Single Responsibility Principle (SRP) § Open-Closed Principle (OCP) § Liskov Substitution Principle (LSP) § Interface Segregation Principle (ISP) § Dependency Inversion Principle (DIP)
6. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 6 Design VS
7. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 7 Key idea § Keep it Simple - over-designing the system is as bad as their absence when needed. § A design that is more than what we need smells. § Design principles are not a perfume to be liberally scattered all over the system.
8. jgs Test Yourselves
9. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 9 This Looks Good
10. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 10 DIP Example
11. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 11 DIP Example What about ISP?
12. jgs We need to do a Project
13. jgs Let Us Talk About A Project
14. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 14 Reference Read: Wettel, R. & Lanza, M. (2007). Visualizing Software Systems as Cities. 2007 4th IEEE International Workshop on Visualizing Software for Understanding and Analysis, 92–99. https://doi.org/10.1109/vissof.2007.4290706
15. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 15 Project
16. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 16 § A Tree is an Interface. § A rock is an Abstract Class. § A house is a Class. The size of the house represents the size (number of methods and attributes) of a Class.
17. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 17 Requirements
18. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 18 Requirements
19. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 19 Project
20. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 20 Let’s Work
21. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 21 Questions
22. jgs Patterns Software Design
23. jgs Javier Gonzalez-Sanchez | CSC 509 | Fall 2023 | 23 GoF Patterns
24. jgs CSC 509 Software Design Javier Gonzalez-Sanchez, Ph.D. javiergs@calpoly.edu Fall 2023 Copyright. These slides can only be used as study material for the class CSC509 at Cal Poly. They cannot be distributed or used for another purpose.