CSE460 Lecture 19

Software Analysis and Design
Connecting the Dots
(202103)

Transcript

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   CSE 460
   Software Analysis and Design
   Lecture 19: Connecting the Dots
   Dr. Javier Gonzalez-Sanchez
   javiergs@asu.edu
   javiergs.engineering.asu.edu | javiergs.com
   PERALTA 230U
   Office Hours: By appointment
   

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   Announcement
   § Assignment 05 (Patterns) is due March 29. It opens at the end of the
   lecture
   

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   Next
   

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   Factory
   

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   Using a Factory
   public class Client {
   public static void main(String[] args) {
   AbstractFactory shapeFactory = new ShapeFactory();
   //get an object of Shape Rectangle
   Shape shape1 = shapeFactory.getShape("RECTANGLE");
   //call draw method of Shape Rectangle
   shape1.draw();
   //get an object of Shape Square
   Shape shape2 = shapeFactory.getShape("SQUARE");
   //call draw method of Shape Square
   shape2.draw(); ]
   //get shape factory
   AbstractFactory shapeFactory1 = new RoundedShapeFactory();
   //get an object of Shape Rectangle
   Shape shape3 = shapeFactory1.getShape("RECTANGLE");
   //call draw method of Shape Rectangle
   shape3.draw();
   //get an object of Shape Square
   Shape shape4 = shapeFactory1.getShape("SQUARE");
   //call draw method of Shape Square
   shape4.draw();
   }
   }
   

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   Chain of Responsibility
   

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   Using Chain of Responsibility
   // Setup Chain of Responsibility
   Handler h1 = new ConcreteHandler1();
   Handler h2 = new ConcreteHandler2();
   Handler h3 = new ConcreteHandler3();
   h1.SetSuccessor(h2);
   h2.SetSuccessor(h3);
   // Generate and process request
   int[] requests = { 2, 5, 14, 22, 18, 3, 27, 20 };
   foreach (int i=0; ih1.HandleRequest(request[i]);
   }
   

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   Decorator
   

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   Using a Decorator
   class MainApp {
   static void main() {
   // Create ConcreteComponent and two Decorators
   ConcreteComponent c = new ConcreteComponent();
   ConcreteDecoratorA d1 = new ConcreteDecoratorA();
   ConcreteDecoratorB d2 = new ConcreteDecoratorB();
   // Link decorators
   d1.SetComponent(c);
   d2.SetComponent(d1);
   d2.Operation();
   }
   }
   

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    Adapter
    Convert the interface of a class into another interface
    clients expect
    

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    Adapter
    

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    Example
    RectangleAdapter
    + draw
    Rectangle
    + draw
    + draw
    

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    Client
    public class Client {
    public static void main(String[] args) {
    Shape shape = new RectangleAdapter(new Rectangle();
    int x1 = 10, y1 = 20;
    int x2 = 30, y2 = 60;
    shape.draw(x1, y1, x2, y2);
    }
    }
    

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    Adapter
    class RectangleAdapter implements Shape {
    private Rectangle adaptee;
    public RectangleAdapter(Rectangle rectangle) {
    this.adaptee = rectangle;
    }
    public void draw(int x1, int y1, int x2, int y2) {
    int x = Math.min(x1, x2);
    int y = Math.min(y1, y2);
    int width = Math.abs(x2 - x1);
    int height = Math.abs(y2 - y1);
    adaptee.draw(x, y, width, height);
    }
    }
    

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    Adaptee
    class Rectangle {
    public void draw(int x, int y, int width, int height) {
    System.out.println("Rectangle with coordinate left-down point”);
    }
    }
    

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    Assignment 04
    Connecting the Dots
    

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    Team
    1 2 3
    

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    Idea
    Main
    Factory
    Gift Ball Box Envelop
    

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    Idea
    wrapper2
    Main wrapper1
    Factory
    decoration
    Envelope
    Box
    Gift
    wrapper3
    ball
    Supervisor
    Is big > 10, box Is small < 5, envelop
    

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    Main
    

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    Factory
    

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    Chain of Responsibilities
    

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    Decorator
    

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    Decorator
    

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    Observer
    

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    CSE 460 Software Analysis and Design
    Javier Gonzalez-Sanchez
    javiergs@asu.edu
    Fall 2020
    Disclaimer. These slides can only be used as study material for the class CSE460 at ASU. They cannot be distributed or used for another purpose.
    

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