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Python設(shè)計模式之抽象工廠模式原理與用法詳解

更新時間：2019年01月15日 14:36:06 作者：Andy冉明

這篇文章主要介紹了Python設(shè)計模式之抽象工廠模式,簡單講述了抽象工廠模式的概念、原理并結(jié)合實例形式分析了Python實現(xiàn)與使用抽象工廠模式的相關(guān)操作技巧,需要的朋友可以參考下

本文實例講述了Python設(shè)計模式之抽象工廠模式原理與用法。分享給大家供大家參考，具體如下：

抽象工廠模式(Abstract Factory Pattern):提供一個創(chuàng)建一系列相關(guān)或相互依賴對象的接口，而無需指定它們的類

下面是一個抽象工廠的demo：

#!/usr/bin/env python
# -*- coding:utf-8 -*-
__author__ = 'Andy'
"""
大話設(shè)計模式
設(shè)計模式——抽象工廠模式
抽象工廠模式(Abstract Factory Pattern):提供一個創(chuàng)建一系列相關(guān)或相互依賴對象的接口，而無需指定它們的類
"""
import sys
#抽象用戶表類
class User(object):
  def get_user(self):
    pass
  def insert_user(self):
    pass
#抽象部門表類
class Department(object):
  def get_department(self):
    pass
  def insert_department(self):
    pass
#操作具體User數(shù)據(jù)庫類-Mysql
class MysqlUser(User):
  def get_user(self):
    print 'MysqlUser get User'
  def insert_user(self):
    print 'MysqlUser insert User'
#操作具體Department數(shù)據(jù)庫類-Mysql
class MysqlDepartment(Department):
  def get_department(self):
    print 'MysqlDepartment get department'
  def insert_department(self):
    print 'MysqlDepartment insert department'
#操作具體User數(shù)據(jù)庫-Orcal
class OrcaleUser(User):
  def get_user(self):
    print 'OrcalUser get User'
  def insert_user(self):
    print 'OrcalUser insert User'
#操作具體Department數(shù)據(jù)庫類-Orcal
class OrcaleDepartment(Department):
  def get_department(self):
    print 'OrcalDepartment get department'
  def insert_department(self):
    print 'OrcalDepartment insert department'
#抽象工廠類
class AbstractFactory(object):
  def create_user(self):
    pass
  def create_department(self):
    pass
class MysqlFactory(AbstractFactory):
  def create_user(self):
    return MysqlUser()
  def create_department(self):
    return MysqlDepartment()
class OrcaleFactory(AbstractFactory):
  def create_user(self):
    return OrcaleUser()
  def create_department(self):
    return OrcaleDepartment()
if __name__ == "__main__":
  db = sys.argv[1]
  myfactory = ''
  if db == 'Mysql':
    myfactory = MysqlFactory()
  elif db == 'Orcal':
    myfactory = OrcaleFactory()
  else:
    print "不支持的數(shù)據(jù)庫類型"
    exit(0)
  user = myfactory.create_user()
  department = myfactory.create_department()
  user.insert_user()
  user.get_user()
  department.insert_department()
  department.get_department()

上面類的設(shè)計如下圖：