Downloaded 41 times
More Related Content
Similar to Factory Design Pattern
Factory Design Pattern
- 1. Factory Design Patterns Elements ofReusable Object-Oriented Software
- 2. Content 1. Design Patterns 2.Factory Method Design Pattern a. Structure b. Implementation 3. Abstract Factory Design Pattern a. Structure 2
- 3. Design Patterns 3 Creational PatternsStructural Patterns Behavioral Patterns Design patterns are solutions to general problems that software developers faced during software development.
- 4. Factory Method DesignPattern Define an interface for creating an object, but let subclasses decide which class to instantiate. 4 Car Factory Demo Class Car Objects
- 5. Structure of FactoryMethod 5 asks create Implements <<Interface>> Car - speed : float - color : color + getCar() : Car <<Class>> Sport Car + getCar() : Car <<Class>> Luxury Car + getCar() : Car <<Class>> Mini Car + getCar() : Car <<Class>> Demo Class + main() : void <<Class>> Car Factory + getCar(type) : Car
- 6. Implementation of FactoryMethod <?php class CarFactory { public static function getCar($type) { // assumes the use of an autoloader $product = "Product_" . $type; if (class_exists($product)) { return new $product(); } else { throw new Exception("Invalid product type given."); } } }
- 7. Implementation of FactoryMethod <?php // build a new Product_Sport_Car $mySportCar = CarFactory :: getCar(“sport car"); // build a new Product_Mini_Car $myLuxuryCar = CarFactory :: getCar(“luxury car"); // build a new Product_Mini_Car $myMiniCar = CarFactory :: getCar(“mini car");
- 8. Abstract Factory DesignPattern Abstract Factory patterns work around a super-factory which creates other factories. Provide an interface for creating families of related or dependent objects without specifying their concrete classes. 8
- 9. Abstract Factory DesignPattern 9 Vehicle Factory Demo Class BMW Factory Volkswagen Factory Car Object SUV Object
- 10. Structure of AbstractFactory 10 <<Class>> Demo Class + main() : void <<Interface>> Car - speed : float - color : color + getCar() : Car <<Interface>> SUV - speed : float - color : color + getSUV() : SUV <<Class>> BMW Car + getCar() : Car <<Class>> Volkwagen Car + getCar() : Car <<Class>> BMW SUV + getSUV() : SUV <<Class>> Volkwagen SUV + getSUV() : SUV <<Class>> BMW Factory + getBMW(type) <<Class>> Volkswagen Factory + getVW(type) <<Class>> Vehicle Factory + getVehicle(type) Implements extends extends extends use extends extends
- 11. Kanushka Gayan SE intern@ Extrogene Software (Pvt) Ltd kanushkanet@gmail.com 071 879 4546 Thank You!