[设计模式as3版]六.抽象工厂

package com.pizza {import com.pizza.ingredient.Cheese;import com.pizza.ingredient.Dough;import com.pizza.ingredient.Sauce;//Pizza是抽象类public class Pizza {protected var _name:String;protected var _dough:Dough;protected var _sauce:Sauce;protected var _cheese:Cheese;public function Pizza() {}public function prepare():void {trace("Preparing " + name);}public function bake():void {trace("Baking " + name);}public function box():void {trace("Boxing " + name);}public function get name():String {return _name;}}}

package com.pizza.ingredient {public interface Dough {}}

package com.pizza.ingredient {public interface Cheese {}}

package com.pizza.ingredient {public interface Sauce {}}

package com.pizza.ingredient {public class BeijingDough implements Dough {public function BeijingDough() {}public function get name():String {return "BeijingDough";}}}

package com.pizza.ingredient {public class BeijingCheese implements Cheese {public function BeijingCheese() {}public function get name():String {return "BeijingCheese";}}}

package com.pizza.ingredient {public class BeijingSauce implements Sauce {public function BeijingSauce() {}public function get name():String {return "BeijingSauce";}}}

package com.pizza.ingredient {public class ShanghaiCheese implements Cheese {public function ShanghaiCheese() {}public function get name():String {return "ShanghaiCheese";}}}

package com.pizza.ingredient {public class ShanghaiSauce implements Sauce {public function ShanghaiSauce() {}public function get name():String {return "ShanghaiSauce";}}}

package com.pizza.ingredient {public class ShanghaiDough implements Dough {public function ShanghaiDough() {}public function get name():String {return "ShanghaiDough";}}}

package com.pizza.ingredient {public interface PizzaIngredientFactory {function createDough():Dough;function createSauce():Sauce;function createCheese():Cheese;}}

package com.pizza.ingredient {public class BeijingPizzaIngredientFactory implements PizzaIngredientFactory {public function BeijingPizzaIngredientFactory() {}public function createDough():Dough {return new BeijingDough();}public function createSauce():Sauce {return new BeijingSauce();}public function createCheese():Cheese {return new BeijingCheese();}}}

package com.pizza.ingredient {public class ShanghaiPizzaIngredientFactory implements PizzaIngredientFactory {public function ShanghaiPizzaIngredientFactory() {}public function createDough():Dough {return new ShanghaiDough();}public function createSauce():Sauce {return new ShanghaiSauce();}public function createCheese():Cheese {return new ShanghaiCheese();}}}

package com.pizza {import com.pizza.ingredient.PizzaIngredientFactory;public class SaucePizza extends Pizza {private var pizzaIngredientFactory:PizzaIngredientFactory;public function SaucePizza(pizzaIngredientFactory:PizzaIngredientFactory) {_name = "SaucePizza";this.pizzaIngredientFactory = pizzaIngredientFactory;}override public function prepare():void {trace("Preparing " + name);_cheese = pizzaIngredientFactory.createCheese();_dough = pizzaIngredientFactory.createDough();_sauce = pizzaIngredientFactory.createSauce();}}}

package com.pizza {import com.pizza.ingredient.PizzaIngredientFactory;public class DoughPizza extends Pizza {private var pizzaIngredientFactory:PizzaIngredientFactory;public function DoughPizza(pizzaIngredientFactory:PizzaIngredientFactory) {_name = "DoughPizza";this.pizzaIngredientFactory = pizzaIngredientFactory;}override public function prepare():void {trace("Preparing " + name);_cheese = pizzaIngredientFactory.createCheese();_dough = pizzaIngredientFactory.createDough();_sauce = pizzaIngredientFactory.createSauce();}}}

package com.pizza {import com.pizza.ingredient.PizzaIngredientFactory;public class CheesePizza extends Pizza {private var pizzaIngredientFactory:PizzaIngredientFactory;public function CheesePizza(pizzaIngredientFactory:PizzaIngredientFactory) {_name = "CheesePizza";this.pizzaIngredientFactory = pizzaIngredientFactory;}override public function prepare():void {trace("Preparing " + name);_cheese = pizzaIngredientFactory.createCheese();_dough = pizzaIngredientFactory.createDough();_sauce = pizzaIngredientFactory.createSauce();}}}

package com.pizza.store {import com.pizza.Pizza;//抽象类public class PizzaStore {public function PizzaStore() {}public function orderPizza(type:String):Pizza {var pizza:Pizza = createPizza(type);pizza.prepare();pizza.bake();pizza.box();return pizza;}//工厂方法protected function createPizza(type:String):Pizza {return null;}}}

package com.pizza.store {import com.pizza.CheesePizza;import com.pizza.DoughPizza;import com.pizza.Pizza;import com.pizza.SaucePizza;import com.pizza.ingredient.BeijingPizzaIngredientFactory;public class BeijingPizzaStore extends PizzaStore {public function BeijingPizzaStore() {}override protected function createPizza(type:String):Pizza {if(type == "cheese") {  return new CheesePizza(new BeijingPizzaIngredientFactory());}else if(type == "sauce") {  return new SaucePizza(new BeijingPizzaIngredientFactory());}else if(type == "dough") {  return new DoughPizza(new BeijingPizzaIngredientFactory());}return null;}}}

package com.pizza.store {import com.pizza.CheesePizza;import com.pizza.DoughPizza;import com.pizza.Pizza;import com.pizza.SaucePizza;import com.pizza.ingredient.ShanghaiPizzaIngredientFactory;public class ShanghaiPizzaStore extends PizzaStore {public function ShanghaiPizzaStore() {}override protected function createPizza(type:String):Pizza {if(type == "cheese") {  return new CheesePizza(new ShanghaiPizzaIngredientFactory());}else if(type == "sauce") {  return new SaucePizza(new ShanghaiPizzaIngredientFactory());}else if(type == "dough") {  return new DoughPizza(new ShanghaiPizzaIngredientFactory());}return null;}}}

package {import com.pizza.Pizza;import com.pizza.store.BeijingPizzaStore;import com.pizza.store.PizzaStore;import com.pizza.store.ShanghaiPizzaStore;import flash.display.Sprite;public class AbstractFactoryTest extends Sprite {public function AbstractFactoryTest() {var pizzaStore:PizzaStore = new ShanghaiPizzaStore();var pizza:Pizza = pizzaStore.orderPizza("cheese");pizza = pizzaStore.orderPizza("sauce");pizza = pizzaStore.orderPizza("dough");pizzaStore = new BeijingPizzaStore();pizza = pizzaStore.orderPizza("cheese");pizza = pizzaStore.orderPizza("sauce");pizza = pizzaStore.orderPizza("dough");}}}