设计模式实例-抽象工厂模式

来源：互联网发布：linux开机自启动mysql 编辑：程序博客网时间：2024/06/05 20:24
using System;namespace Ahoo.Demo.DesignPatterns.Patterns.AbstractFactory{    /*######抽象工厂模式#######     * 提供创建一系列相关/项目依赖对象的接口，     * 无需指定具体子类。     */    public class Department { }    interface IDepartmentDAL    {        void Insert(Department entity);        Department GetEntity(long Id);    }    /// <summary>    /// 3....    /// </summary>    public class SqlServerDepartment : IDepartmentDAL    {        public void Insert(Department entity)        {            Console.WriteLine("在MS-SQL中插入一条Department记录！");        }        public Department GetEntity(long Id)        {            Console.WriteLine("在MS-SQL中获得一条Department记录！");            return new Department();        }    }    public class MySqlDepartment : IDepartmentDAL    {        public void Insert(Department entity)        {            Console.WriteLine("在MySql中插入一条Department记录！");        }        public Department GetEntity(long Id)        {            Console.WriteLine("在MySql中获得一条Department记录！");            return new Department();        }    }    /// <summary>    /// 1....    /// 抽象工厂接口，包含所有产品创建的抽象方法    /// </summary>    interface IFactory    {        IDepartmentDAL CreateDepartmentDAL();        //IUserDAL CreateUserDAL();    }    /// <summary>    /// 2....    /// 具体实现工厂    /// </summary>    public class SqlServerFactory : IFactory    {        public IDepartmentDAL CreateDepartmentDAL()        {            return new SqlServerDepartment();        }    }    public class Client    {        public static void Excute()        {            IFactory factory = new SqlServerFactory();            IDepartmentDAL dal = factory.CreateDepartmentDAL();            dal.Insert(new Department { });        }    }    /// <summary>    /// 反射技术的改善    /// </summary>    public class DataAccess    {        private static readonly string AssemblyName = "抽象工厂模式";        private static readonly string DB = "SqlServer";        public static IDepartmentDAL CreateDepartmentDal()        {            string className = String.Format("{0}.{1}.{2}", AssemblyName, DB, "DepartmentDAL");            IDepartmentDAL dal = (IDepartmentDAL)Assembly.Load(AssemblyName).CreateInstance(className);            return dal;        }    }}
0 0