YZR IOC之RUtility-白红宇

YZR IOC之RUtility

阅读量：5167 次

发布时间：2019-06-13

本文共 5270 字，大约阅读时间需要 17 分钟。

简要:

控制反转（Inversion of Control，英文缩写为IoC）是一个重要的面向对象编程的法则来削减计算机程序的耦合问题，也是轻量级的Spring框架的核心。

经典的IOC框架AutoFac:

在此前已经写过一篇对Autofac的介绍和使用,如果想了解可以去看一下.连接如下:

自己写个类Utility:

dbUtilitys是存储容器,通过表名可以获取相应的IDataBase对象实例.

namespace YZR.Core{    using YZR.Data;    ///     /// DbUtility  IOC    By YZR    /// 
   public  class RUtility    {       private Dictionary
     
       dbUtilitys;//存储Db键值对       public static string DefaultDbUtilityName;//Db默认key值       private static RUtility instance;//实例       public static RUtility Instance       {           get { return RUtility.instance; }           set { RUtility.instance = value; }       }       static RUtility()       {           DefaultDbUtilityName = "default";           instance = new RUtility();       }//只执行一次的操作,初始化RUtility       public RUtility()       {           this.dbUtilitys = new Dictionary
      
       ();       }//得到Db键值对       public  IDataBase GetDbUtility(string name)       {           if (this.dbUtilitys[name]==null)           {               throw new Exception("表名映射实体出错");           }           return this.dbUtilitys[name];       }//根据key获取DbUtility       public void RegistDbUtility(string name,IDataBase dbUtility)       {           this.dbUtilitys[name] = dbUtility;       }//往Db键值对注册       public IDataBase DefaultDbUtility       {           get {               return this.dbUtilitys[DefaultDbUtilityName];           }       }//获取默认DbUtility    }}

一个管理者类,实现往容器注册实例的方法RegistDbUtility();

namespace YZR.Core{    using YZR.Data;    public static class DbUtilityManager    {        public static RUtility getInstance()//暂时无用        {            return RUtility.Instance;        }        ///         /// 注册实体实例        /// 
        ///         ///         public static void RegistDbUtility(string name, object dbUtility)        {            RUtility.Instance.RegistDbUtility(name, dbUtility as IDataBase);        }    }}

在应用程序一开始的时候实现注入:

mvc:

using System.Reflection;    using YZR.Config;    using YZR.Core;    using YZR.Entity;    public class RUtilityConfig    {        ///         /// IOC  By YZR        /// 
        public static void Register()        {            string Title = WebSettingManager.WebSetting.BaseSetting.title + " - " + WebSettingManager.WebSetting.BaseSetting.subTitle;            int count = WebSettingManager.WebSetting.StrConnSetting.Count;            Dictionary
     
       dic = new Dictionary
      
       ();            for (int i = 0; i < count; i++)            {                connSection section = WebSettingManager.WebSetting.StrConnSetting[i];                dic.Add(section.Rname, section.Rvalue);            }            //string strConn = System.Web.Configuration.WebConfigurationManager.ConnectionStrings["default"].ConnectionString;            //string connString = System.Configuration.ConfigurationManager.ConnectionStrings["connString"].ToString();            string ProviderName = System.Configuration.ConfigurationManager.ConnectionStrings["connString"].ProviderName;            string path = AppDomain.CurrentDomain.BaseDirectory;            Assembly ass = Assembly.LoadFrom(path + "bin\\YZR.Data.dll");            //Assembly ass = Assembly.Load("YZR.Entity");            //TODO:Oracle数据库使用RAtion,Sqlserver使用RMotion            Type type = null;            string value = dic["Oracle"];            if (value.Equals(ProviderName, StringComparison.OrdinalIgnoreCase))            {                type = ass.GetType("YZR.Data." + "RAction");            }            else            {                value = dic["Sqlserver"];                if (value.Equals(ProviderName, StringComparison.OrdinalIgnoreCase))                {                    type = ass.GetType("YZR.Data." + "RMotion");                }                else                    throw new Exception("配置节点出错");            }            //ConstructorInfo c = type.GetConstructor(new Type[] { typeof(string) });//构造函数的实参类型            //c.Invoke(new object[] { "SYS_ADMIN" });//实参            //TODO:在这里需要将所有Entity注册进DbUtilityManager中            if (type != null)            {                Type tableType = typeof(TableNames);                string[] tableNames = tableType.GetEnumNames();                for (int i = 0; i < tableNames.Length; i++)                {                    object fobj = Activator.CreateInstance(type, new object[] { tableNames[i] });                    DbUtilityManager.RegistDbUtility(tableNames[i], fobj);                }            }        }    }

webform:

using YZR.Config;    public static class AppStart    {        ///         /// 应用程序入口  By YZR        /// 
        public static void Init()        {            //............//TODO:在这里需要将所有Entity注册进DbUtilityManager中            if (type != null)            {                Type tableType = typeof(TableNames);                string[] tableNames = tableType.GetEnumNames();                for (int i = 0; i < tableNames.Length; i++)                {                    object fobj = Activator.CreateInstance(type, new object[] { tableNames[i] });                    DbUtilityManager.RegistDbUtility(tableNames[i], fobj);                }            }        }    }

那么接下来,业务逻辑层中只需要一句代码即可获取相应的实例对象:

如果需要操作另一个实例,也只是需要一句代码:

Note:RUtlilty能够兼容数据库.

转载于:https://www.cnblogs.com/Francis-YZR/p/5027157.html

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