Detailed description of Design pattern-abstract factory pattern

Abstract factory pattern

Address: http://blog.csdn.net/caroline_wendy/article/details/27091671

Reference factory Model: Http://blog.csdn.net/caroline_wendy/article/details/27081511

Abstract Factory mode:Provides an interface for creating families of related or dependent objects without specifying specific classes.

All code: http://download.csdn.net/detail/u012515223/7403553

Specific Method:

1. ProvideAbstract factory interface Class, DifferentSpecific factory (concrete factory)This class is inherited.

Code:

/*** @ Time May 26, 2014 */package factory;/*** @ author C. l. wang **/public interface PizzaIngredientFactory {public Dough createDough (); public Sauce createSauce (); public Cheese createCheese (); public Veggies [] createVeggies (); public Pepperoni createpperoni (); public Clams createClam ();}

2. Specific factory (concrete factory), Implementation Abstract factory interface (interface ).

Code:

/*** @ Time May 26, 2014 */package factory;/*** @ author C. l. wang **/public class NYPizzaIngredientFactory implements PizzaIngredientFactory {/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createDough () */@ Overridepublic Dough createDough () {// TODO Auto-generated method stubreturn new ThinCrustDough ();}/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createSauce () */@ Overridepublic Sauce createSauce () {// TODO Auto-generated method stubreturn new MarinaraSauce ();}/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createCheese () */@ Overridepublic Cheese createCheese () {// TODO Auto-generated method stubreturn new ReggianoCheese ();}/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createVeggies () */@ Overridepublic Veggies [] createVeggies () {// TODO Auto-generated method stubVeggies veggies [] = {new Garlic (), new Onion (), new Mushroom (), new RedPepper ()}; return veggies;}/* (non-Javadoc) * @ see factory. response # createpperoni () */@ Overridepublic Pepperoni createpperoni () {// TODO Auto-generated method stubreturn new SlicedPepperoni ();}/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createClam () */@ Overridepublic Clams createClam () {// TODO Auto-generated method stubreturn new FreshClams ();}} /*** @ time May 26, 2014 */package factory;/*** @ author C. l. wang **/public class ChicagoPizzaIngredientFactory implements PizzaIngredientFactory {/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createDough () */@ Overridepublic Dough createDough () {// TODO Auto-generated method stubreturn new ThickCrustDough ();}/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createSauce () */@ Overridepublic Sauce createSauce () {// TODO Auto-generated method stubreturn new PlumTomatoSauce ();}/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createCheese () */@ Overridepublic Cheese createCheese () {// TODO Auto-generated method stubreturn new MozzarellaCheese ();}/* (non-Javadoc) * @ see factory. dependencies # createVeggies () */@ Overridepublic Veggies [] createVeggies () {// TODO Auto-generated method stubVeggies veggies [] = {new BlackOlives (), new Spinach (), new Eggplant ()}; return veggies;}/* (non-Javadoc) * @ see factory. response # createpperoni () */@ Overridepublic Pepperoni createpperoni () {// TODO Auto-generated method stubreturn new SlicedPepperoni ();}/* (non-Javadoc) * @ see factory. pizzaIngredientFactory # createClam () */@ Overridepublic Clams createClam () {// TODO Auto-generated method stubreturn new FrozenClams ();}}

3. Abstract parent class, Provides interfaces Specific product (concrete product)Call.

Code:

/*** @ Time May 26, 2014 */package factory;/*** @ author C. l. wang **/public abstract class Pizza {String name; Dough dough; // Dough Sauce sauce; // dressing Veggies veggies []; Cheese cheese; Pepperoni pepperoni; Clams clam; abstract void prepare (); void bake () {System. out. println ("Bake for 25 minutes at 350");} void cut () {System. out. println ("Cutting the pizza into diagonal slices");} void box () {System. out. println ("Place pizza in official PizzaStore box");} void setName (String name) {this. name = name ;}public String getName () {return name ;}}

4. Specific product (concrete product)Inheritance Abstract parent class, Use FactoryImplementation Inheritance Interface, Through Different factories produce different products;

Code:

/*** @ Time May 26, 2014 */package factory;/*** @ author C. l. wang **/public class CheesePizza extends Pizza {PizzaIngredientFactory pizzaIngredientFactory; public CheesePizza (PizzaIngredientFactory pizzaIngredientFactory) {this. pizzaIngredientFactory = pizzaIngredientFactory;}/* (non-Javadoc) * @ see factory. pizza # prepare () */@ overrisponid prepare () {// TODO Auto-generated method stubSystem. out. println ("Preparing" + name); dough = pizzaIngredientFactory. createDough (); sauce = pizzaIngredientFactory. createSauce (); cheese = pizzaIngredientFactory. createCheese (); System. out. println ("Ingredient:" + dough + "," + sauce + "," + cheese) ;}/ *** @ time May 26, 2014 */package factory; /*** @ author C. l. wang **/public class ClamPizza extends Pizza {PizzaIngredientFactory pizzaIngredientFactory; public ClamPizza (PizzaIngredientFactory pizzaIngredientFactory) {this. pizzaIngredientFactory = pizzaIngredientFactory;}/* (non-Javadoc) * @ see factory. pizza # prepare () */@ overrisponid prepare () {// TODO Auto-generated method stubSystem. out. println ("Preparing" + name); dough = pizzaIngredientFactory. createDough (); sauce = pizzaIngredientFactory. createSauce (); cheese = pizzaIngredientFactory. createCheese (); clam = pizzaIngredientFactory. createClam (); System. out. println ("Ingredient:" + dough + "," + sauce + "," + cheese + "," + clam );}}

5. Details Call a function, Through Pass different parameters, Call different factories to produce Different Products.

Code:

/*** @ Time May 26, 2014 */package factory;/*** @ author C. l. wang **/public class NYPizzaStore extends PizzaStore {/* (non-Javadoc) * @ see factory. pizzaStore # createPizza (java. lang. string) */@ OverridePizza createPizza (String item) {// TODO Auto-generated method stubPizza pizza = null; PizzaIngredientFactory pizzaIngredientFactory = new items (); if (item. equals ("cheese") {pizza = new CheesePizza (pizzaIngredientFactory); pizza. setName ("New York Style Cheese Pizza");} else if (item. equals ("clam") {pizza = new ClamPizza (pizzaIngredientFactory); pizza. setName ("New York Style Clam Pizza");} return pizza;}/*** @ time May 26, 2014 */package factory;/*** @ author C. l. wang **/public class ChicagoPizzaStore extends PizzaStore {/* (non-Javadoc) * @ see factory. pizzaStore # createPizza (java. lang. string) */@ OverridePizza createPizza (String item) {// TODO Auto-generated method stubPizza pizza = null; PizzaIngredientFactory pizzaIngredientFactory = new items (); if (item. equals ("cheese") {pizza = new CheesePizza (pizzaIngredientFactory); pizza. setName ("Chicago Style Cheese Pizza");} else if (item. equals ("clam") {pizza = new ClamPizza (pizzaIngredientFactory); pizza. setName ("Chicago Style Clam Pizza");} return pizza ;}}

6. Test Functions

Code:

/*** @ Time May 26, 2014 */package factory;/*** @ author C. l. wang **/public class PizzaTestDrive {/*** @ param args */public static void main (String [] args) {// TODO Auto-generated method stubPizzaStore nyStore = new NYPizzaStore (); PizzaStore chicagstore = new ChicagoPizzaStore (); Pizza pizza = nyStore. orderPizza ("cheese"); System. out. println ("Ethan ordered a" + pizza. getName () + "\ n"); pizza = chicagstore. orderPizza ("cheese"); System. out. println ("Joel ordered a" + pizza. getName () + "\ n"); pizza = nyStore. orderPizza ("clam"); System. out. println ("Ethan ordered a" + pizza. getName () + "\ n"); pizza = chicagstore. orderPizza ("clam"); System. out. println ("Joel ordered a" + pizza. getName () + "\ n ");}}

7. Output:

Preparing New York Style Cheese PizzaIngredient : Thin Crust Dough, Marinara Sauce, Reggiano CheeseBake for 25 minutes at 350Cutting the pizza into diagonal slicesPlace pizza in official PizzaStore boxEthan ordered a New York Style Cheese PizzaPreparing Chicago Style Cheese PizzaIngredient : ThickCrust style extra thick crust dough, Tomato sauce with plum tomatoes, Shredded MozzarellaBake for 25 minutes at 350Cutting the pizza into diagonal slicesPlace pizza in official PizzaStore boxJoel ordered a Chicago Style Cheese PizzaPreparing New York Style Clam PizzaIngredient : Thin Crust Dough, Marinara Sauce, Reggiano Cheese, Fresh Clams from Long Island SoundBake for 25 minutes at 350Cutting the pizza into diagonal slicesPlace pizza in official PizzaStore boxEthan ordered a New York Style Clam PizzaPreparing Chicago Style Clam PizzaIngredient : ThickCrust style extra thick crust dough, Tomato sauce with plum tomatoes,...Bake for 25 minutes at 350Cutting the pizza into diagonal slicesPlace pizza in official PizzaStore boxJoel ordered a Chicago Style Clam Pizza