jgs CSE 564 Software Design Lecture 25: Final Review Dr. Javier Gonzalez-Sanchez [email protected] javiergs.engineering.asu.edu | javiergs.com PERALTA 230U Office Hours: By appointment 

jgs Structural Complexity Instability, Abstractness, and Distance 

jgs 564 00000100 Example 

jgs 564 00000100 • Instability = Cout (Cin + Cout) Stable Abstraction Principle (SAP) 

jgs 564 00000100 Distance § Distance: how far a package is away from the Main Sequence § D = A + I – 1 § Values -1 to 1 § Absolute Distance |D| 

jgs 564 00000100 Example ITeamA = 6 / 0 + 6 = 1 ATeamA = 0 DTeamA = 0 + 1 – 1 = 0 IJlabel = 0 / 4 + 0 = 0 AJlabel = 0 DJlabel = 0 + 0 – 1 = -1 |Djlabel | = 1 Pain Zone (just an example!) 

jgs 564 00000100 Stable Dependency Principle (SDP) § Every dependency between modules should terminate on a module whose Instability is less than or equal to the depending module's Instability. § Every dependency between modules should terminate on a module whose Abstractness is greater than or equal to the depending module's Abstractness. 

jgs 564 00000100 Structural Metrics Instability = Cout (Cin + Cout) D = A + I – 1 

jgs Final Exam Review 24 lectures 

jgs The following slides shows some examples related to some topics This is NOT a comprehensive list of topics Topics in the exam can be found Weeks 2 to 16 (Lectures 1 to 24) 

jgs 564 00000100 Object Oriented Relationships Association Directed Association Reflexive Association Multiplicity Aggregation Composition Generalization Realization 

jgs 564 00000100 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) a child should always be better than its parent. § Interface Segregation Principle (ISP) broke up interfaces § Dependency Inversion Principle (DIP) do not call us, we will call you 

jgs 564 00000100 SRP Example 

jgs 564 00000100 OCP Example 

jgs 564 00000100 DIP Example 

jgs 564 00000100 GoF Patterns 

jgs 564 00000100 Strategy 

jgs 564 00000100 Composite 

jgs 564 00000100 Adapter 

jgs 564 00000100 Chain of Responsibility 

jgs 564 00000100 Bridge 

jgs 564 00000100 Idea 2 Main Factory Gift Ball Box Envelop Handler Supervisor Bin GUI 

jgs 564 00000100 Problem 

jgs 564 00000100 Model-View-Controller 

jgs 564 00000100 Blackboard 

jgs 564 00000100 Client-Server Client-Server 

jgs 564 00000100 • Instability = Cout (Cin + Cout) Stable Abstraction Principle (SAP) 

jgs 564 00000100 Distance § Distance: how far a package is away from the Main Sequence § D = A + I – 1 § Values -1 to 1 § Absolute Distance |D| 

jgs CSE 564 Computer Systems Fundamentals Javier Gonzalez-Sanchez [email protected] Fall 2020 Disclaimer. These slides can only be used as study material for the class CSE564 at ASU. They cannot be distributed or used for another purpose.