python风格的抽象工厂模式

#!/usr/bin/python
# -*- coding:utf-8 -*-
import sys
reload(sys)
sys.setdefaultencoding(‘utf-8‘)

‘‘‘
披萨
‘‘‘
class Pizza:
    name = ""
    dough = None
    sauce = None
    cheese = None
    clam = None

    def prepare(self):
        pass

    def bake(self):
        print "烘烤25分钟在350。".decode(‘utf-8‘)

    def cut(self):
        print "切割成对角线切片。".decode(‘utf-8‘)

    def box(self):
        print "放在官方的盒子中。".decode(‘utf-8‘)

    def get_name(self):
        return self.name

    def set_name(self, name):
        self.name = name

    def to_string(self):
        string = "%s:\n" % self.name 
        string += "    面团: %s\n" % self.dough.to_string() if self.dough else ""
        string += "    酱汁: %s\n" % self.sauce.to_string() if self.sauce else ""
        string += "    奶酪: %s\n" % self.cheese.to_string() if self.cheese else ""
        string += "    文蛤: %s\n" % self.clam.to_string() if self.clam else ""
        return string

‘‘‘
什么类别的披萨
‘‘‘
class CheesePizza(Pizza):
    def __init__(self, ingredient_factory):
        self.ingredient_factory = ingredient_factory

    def prepare(self):
        print "准备: %s" % self.name
        self.dough = self.ingredient_factory.create_dough()
        self.sauce = self.ingredient_factory.create_sauce()
        self.cheese = self.ingredient_factory.create_cheese()


class ClamPizza(Pizza):
    def __init__(self, ingredient_factory):
        self.ingredient_factory = ingredient_factory

    def prepare(self):
        print "准备: %s" % self.name
        self.dough = self.ingredient_factory.create_dough()
        self.sauce = self.ingredient_factory.create_sauce()
        self.clam = self.ingredient_factory.create_clam()

‘‘‘
披萨店
‘‘‘
class PizzaStore:
    def order_pizza(self, pizza_type):
        self.pizza = self.create_pizza(pizza_type)
        self.pizza.prepare()
        self.pizza.bake()
        self.pizza.cut()
        self.pizza.box()
        return self.pizza

    def create_pizza(self, pizza_type):
        pass

‘‘‘
纽约披萨实体店1
‘‘‘
class NYPizzaStore(PizzaStore):
    def create_pizza(self, pizza_type):
        ingredient_factory = NYPizzaIngredientFactory()

        if pizza_type == "cheese":
            pizza = CheesePizza(ingredient_factory)
            pizza.set_name("纽约风格芝士披萨".decode(‘utf-8‘))
        elif pizza_type == "clam":
            pizza = ClamPizza(ingredient_factory)
            pizza.set_name("纽约风格文蛤披萨".decode(‘utf-8‘))
        else:
            pizza = None

        return pizza

‘‘‘
芝加哥披萨实体店2
‘‘‘
class ChicagoPizzaStore(PizzaStore):
     def create_pizza(self, pizza_type):
        ingredient_factory = ChicagoPizzaIngredientFactory()

        if pizza_type == "cheese":
            pizza = CheesePizza(ingredient_factory)
            pizza.set_name("芝加哥风格芝士披萨".decode(‘utf-8‘))
        elif pizza_type == "clam":
            pizza = ClamPizza(ingredient_factory)
            pizza.set_name("芝加哥风格文蛤披萨".decode(‘utf-8‘))
        else:
            pizza = None

        return pizza

‘‘‘
生产披萨的工厂
‘‘‘
class PizzaIngredientFactory:
    def create_dough(self):
        pass

    def create_sauce(self):
        pass

    def create_cheese(self):
        pass

    def create_clam(self):
        pass

‘‘‘
生产披萨的实体工厂1
‘‘‘
class NYPizzaIngredientFactory(PizzaIngredientFactory):
    def create_dough(self):
        return ThinDough()

    def create_sauce(self):
        return MarinaraSauce()

    def create_cheese(self):
        return FreshCheese()

    def create_clam(self):
        return FreshClam()

‘‘‘
生产披萨的实体工厂2
‘‘‘
class ChicagoPizzaIngredientFactory(PizzaIngredientFactory):
    def create_dough(self):
        return ThickDough()

    def create_sauce(self):
        return MushroomSauce()

    def create_cheese(self):
        return BlueCheese()

    def create_clam(self):
        return FrozenClam()


class Dough:
    def to_string(self):
        pass

class ThinDough(Dough):
    def to_string(self):
        return "薄的面团"

class ThickDough(Dough):
    def to_string(self):
        return "厚的生面团"

class Sauce:
    def to_string(self):
        pass

class MarinaraSauce(Sauce):
    def to_string(self):
        return "番茄酱"

class MushroomSauce(Sauce):
    def to_string(self):
        return "蘑菇酱"

class Cheese:
    def to_string(self):
        pass

class FreshCheese(Cheese):
    def to_string(self):
        return "新鲜的奶酪"

class BlueCheese(Cheese):
    def to_string(self):
        return "蓝纹奶酪"

class Clam:
    def to_string(self):
        pass

class FreshClam(Clam):
    def to_string(self):
        return "新鲜的文蛤"

class FrozenClam(Clam):
    def to_string(self):
        return "冷冻的文蛤"

if __name__ == "__main__":
	# 创建了两个披萨实体店
    ny_store = NYPizzaStore()
    chicago_store = ChicagoPizzaStore()

    # 在第一个披萨对象中订购了一个cheese风味的披萨
    pizza = ny_store.order_pizza("cheese")
    print pizza.to_string()
    print "迈克订购了一个 %s" % pizza.get_name()
    print 

    pizza = chicago_store.order_pizza("clam")
    print pizza.to_string()
    print "约翰订购了一个%s" % pizza.get_name()
    print

准备: 纽约风格芝士披萨
烘烤25分钟在350。
切割成对角线切片。
放在官方的盒子中。
纽约风格芝士披萨:
    面团: 薄的面团
    酱汁: 番茄酱
    奶酪: 新鲜的奶酪

迈克订购了一个 纽约风格芝士披萨

准备: 芝加哥风格文蛤披萨
烘烤25分钟在350。
切割成对角线切片。
放在官方的盒子中。
芝加哥风格文蛤披萨:
    面团: 厚的生面团
    酱汁: 蘑菇酱
    文蛤: 冷冻的文蛤

约翰订购了一个芝加哥风格文蛤披萨