JAVA-抽象工厂模式
抽象工厂模式是设计模式工厂设计模式较为复杂的一种设计模式，英文概念翻译是:为创建一组相关或相互依赖的对象提供一个借口，无需指定它们的具体类”。抽象工厂模式通常是用于创一族产品，并且这族产品分不同的等级；不同的具体工厂类生产不同等级的一族产品。抽象工厂模式也有四种角色：抽象工厂、具体工厂、抽象产品和具体产品.典型的面向接口/抽象类的编程模式。
抽象工厂模式的类图:
代码示例：
工程示例:
1.创建抽象工厂接口：
package test.edu.absfactory;
public interface IAbstractFactory {
public IRestaurant restaurantFactory();
public ISpecialDishes specialDisheFactory();
public IWine wineFactory();
}
package test.edu.absfactory;
public interface IRestaurant {
public void restaurantName();
}
package test.edu.absfactory;
public interface ISpecialDishes {
public void eatSpecialDishes ();
}
package test.edu.absfactory;
public interface IWine {
public void drinkWine ();
}
3.创建具体产品类:
中国特色餐馆产品族实现类：
package test.edu.impl;
import test.edu.absfactory.IRestaurant;
public class ChineseRestaurant implements IRestaurant {
@Override
public void restaurantName() {
System.out.println("这是中国餐馆");
}
}
package test.edu.impl;
import test.edu.absfactory.ISpecialDishes;
public class ChineseDishes implements ISpecialDishes {
@Override
public void eatSpecialDishes() {
System.out.println("吃特色菜满汉全席");
}
}
package test.edu.impl;
import test.edu.absfactory.IWine;
public class ChineseWLY implements IWine {
@Override
public void drinkWine() {
System.out.println("喝五粮液");
}
}
韩国特色餐馆产品族实现类：
package test.edu.impl;
import test.edu.absfactory.IRestaurant;
public class KORRestaurant implements IRestaurant {
@Override
public void restaurantName() {
System.out.println("这是韩国菜馆");
}
}
package test.edu.impl;
import test.edu.absfactory.ISpecialDishes;
public class KORDishes implements ISpecialDishes {
@Override
public void eatSpecialDishes() {
System.out.println("吃韩国烤肉");
}
}
package test.edu.impl;
import test.edu.absfactory.IWine;
public class KORWine implements IWine {
@Override
public void drinkWine() {
System.out.println("喝韩国真露");
}
}
4,具体的抽象工厂类:实现抽象工厂的同时，各个产品的具体工厂也做具体实现
中国餐馆的工厂类
package test.edu.impl;
import test.edu.absfactory.IAbstractFactory;
import test.edu.absfactory.IRestaurant;
import test.edu.absfactory.ISpecialDishes;
import test.edu.absfactory.IWine;
public class ChineseDeliciousFoodFactory implements IAbstractFactory {
public IRestaurant restaurantFactory(){
return new ChineseRestaurant();
}
public ISpecialDishes specialDisheFactory(){
return new ChineseDishes();
}
public IWine wineFactory(){
return new ChineseWLY();
}
}
韩国餐馆的工厂类
package test.edu.impl;
import test.edu.absfactory.IAbstractFactory;
import test.edu.absfactory.IRestaurant;
import test.edu.absfactory.ISpecialDishes;
import test.edu.absfactory.IWine;
public class KORDeliciousFoodFactory implements IAbstractFactory {
public IRestaurant restaurantFactory(){
return new KORRestaurant();
}
public ISpecialDishes specialDisheFactory(){
return new KORDishes();
}
public IWine wineFactory(){
return new KORWine();
}
}
测试客户端:
去中国菜馆
package test.edu.client;
import test.edu.absfactory.IAbstractFactory;
import test.edu.impl.ChineseDeliciousFoodFactory;
public class AbsFactoryClient {
/**
* @param args
*/
public static void main(String[] args) {
IAbstractFactory dff = new ChineseDeliciousFoodFactory();
dff.restaurantFactory().restaurantName();
dff.specialDisheFactory().eatSpecialDishes();
dff.wineFactory().drinkWine();
}
}
结果：
这是中国餐馆 吃特色菜满汉全席 喝五粮液
IAbstractFactory dff = new ChineseDeliciousFoodFactory();为：
IAbstractFactory dff = new KORDeliciousFoodFactory();
package test.edu.client;
import test.edu.absfactory.IAbstractFactory;
import test.edu.impl.ChineseDeliciousFoodFactory;
import test.edu.impl.KORDeliciousFoodFactory;
public class AbsFactoryClient {
/**
* @param args
*/
public static void main(String[] args) {
IAbstractFactory dff = new KORDeliciousFoodFactory();
dff.restaurantFactory().restaurantName();
dff.specialDisheFactory().eatSpecialDishes();
dff.wineFactory().drinkWine();
}
}
结果:
这是韩国菜馆 吃韩国烤肉 喝韩国真露
当然在实际应用如何切换不同的工厂类，可以在配置文件配置，也可以利用不同的条件调用不同的抽象工厂实现类。