CSC308 Lecture 15

Software Engineering I
Software Architecture
(202210)

Transcript

1. jgs CSC 308 Software Engineering I Lecture 15: Software Architecture Dr. Javier Gonzalez-Sanchez javiergs@calpoly.edu users.csc.calpoly.edu/~javiergs | javiergs.com Building 14 -227 Office Hours: By appointment
2. jgs Previously … GoF Patterns
3. jgs Fall 2022 | 00000010 GoF Patterns
4. jgs Next Step Software Architecture
5. jgs Fall 2022 | 00000010 Timeline 1989 Beck OO Thinking Architecture 1993 Gamma et al. GoF Patterns 1994 Garlan
6. jgs Fall 2022 | 00000010 Definition § Software design It is responsible for the code level design: what each class is doing, its relationships, and scope. § Software architecture It is responsible for the skeleton and the high-level organization of a software. It identifies the main structural modules (or components) in a system and the relationships between them.
7. jgs Fall 2022 | 00000010 Architecture Goals § Define separate branches for each major function § Coordinate communication between modules § Limit propagation of side effects § Facilitate extensibility, modifiability and reuse
8. jgs Fall 2022 | 00000010 Architectural Patterns 1. Model-View-Controller (MVC) 2. Layered Architecture 3. Repository Architecture (Blackboard) 4. Client-Server architecture
9. jgs Architecture Patterns Model-View-Controller
10. jgs Fall 2022 | 00000010 Model-View-Controller
11. jgs Fall 2022 | 00000010 Model-View-Controller
12. jgs Fall 2022 | 00000010 Implementation :: View
13. jgs Fall 2022 | 00000010 Implementation :: Controller
14. jgs Architecture Patterns Blackboard
15. jgs Fall 2022 | 00000010 Blackboard
16. jgs Fall 2022 | 00000010 Drafting an Implementation
17. jgs Fall 2022 | 00000010 What about Blackboard § Singleton (yes or not)? § Create Blackboard in main method (yes or not)? § Connection between Blackboard and Professor (association, aggregation, composition, realization, generalization) ? § Connection between Blackboard and Student (association, aggregation, composition, realization, generalization) ? § Connection between Blackboard and Classroom (association, aggregation, composition, realization, generalization) ?
18. jgs Fall 2022 | 00000010 Implementation :: Classroom
19. jgs Fall 2022 | 00000010 Implementation :: Professor
20. jgs Fall 2022 | 00000010 Implementation :: Student
21. jgs Fall 2022 | 00000010 Implementation :: Blackboard
22. jgs Fall 2022 | 00000010 Drafting an Implementation
23. jgs Client-Server
24. jgs Fall 2022 | 00000010 Client-Server
25. jgs Fall 2022 | 00000010 Client-Server
26. jgs Fall 2022 | 00000010 Client-Server Description § Functionality of the system is organized into services. § Each service delivered from a separate server. § Clients are users of these services and access servers to make use of them. When used § Used when data has to be accessed from a range of locations. § May also be used when the load on a system is variable. Advantages § Distributed system Disadvantages § Each service is a single point of failure so susceptible to denial of service attacks or server failure. § Performance may be unpredictable because it depends on the network as well as the system.
27. jgs Fall 2022 | 00000010 Implementation :: Server chrestomathy: https://www.javatpoint.com/socket-programming
28. jgs Fall 2022 | 00000010 Implementation :: Client chrestomathy: https://www.javatpoint.com/socket-programming
29. jgs Fall 2022 | 00000010 Questions
30. jgs
31. jgs CSC 308 Software Engineering I Lab 15: Tools: Astah Dr. Javier Gonzalez-Sanchez javiergs@calpoly.edu users.csc.calpoly.edu/~javiergs | javiergs.com Building 14 -227 Office Hours: By appointment
32. jgs Test Yourselves
33. jgs Fall 2022 | 00000010 Project – User selects Line and clicks Run ✅
34. jgs Fall 2022 | 00000010 Team Work
35. jgs Fall 2022 | 00000010 Questions
36. jgs CSC 308 Software Engineering I Javier Gonzalez-Sanchez, Ph.D. javiergs@calpoly.edu Fall 2022 Copyright. These slides can only be used as study material for the class CSC308 at Cal Poly. They cannot be distributed or used for another purpose.