統一DI，多個命名實例

我有這個簡化的問題構造。我有多個命名實例，您可以看到IBusinessLogic的註冊數量隨着每個添加的參數而增加。有沒有優雅的方式來實現下面的功能，而不需要爲IBusinessLogic提供如此多的RegisterType。統一DI，多個命名實例

class Program 
{ 
    static void Main(string[] args) 
    { 
     IUnityContainer container = new UnityContainer(); 
     container.RegisterType<ISettings, Settings1>("settings1"); 
     container.RegisterType<ISettings, Settings2>("settings2"); 

     container.RegisterType<IRepository, Repository1>("repository1 settings1", new InjectionConstructor(new ResolvedParameter<ISettings>("settings1"))); 
     container.RegisterType<IRepository, Repository1>("repository1 settings2", new InjectionConstructor(new ResolvedParameter<ISettings>("settings2"))); 
     container.RegisterType<IRepository, Repository1>("repository2 settings1", new InjectionConstructor(new ResolvedParameter<ISettings>("settings1"))); 
     container.RegisterType<IRepository, Repository1>("repository2 settings2", new InjectionConstructor(new ResolvedParameter<ISettings>("settings2"))); 

     container.RegisterType<IBusinessLogic, BusinessLogic1>("logic1 settings1 repository1", new InjectionConstructor(new ResolvedParameter<ISettings>("settings1"), new ResolvedParameter<IRepository>("repository1 settings1"))); 
     container.RegisterType<IBusinessLogic, BusinessLogic1>("logic1 settings2 repository1", new InjectionConstructor(new ResolvedParameter<ISettings>("settings2"), new ResolvedParameter<IRepository>("repository1 settings1"))); 

     container.RegisterType<IBusinessLogic, BusinessLogic1>("logic1 settings1 repository2", new InjectionConstructor(new ResolvedParameter<ISettings>("settings1"), new ResolvedParameter<IRepository>("repository2 settings2"))); 
     container.RegisterType<IBusinessLogic, BusinessLogic1>("logic1 settings2 repository2", new InjectionConstructor(new ResolvedParameter<ISettings>("settings2"), new ResolvedParameter<IRepository>("repository2 settings2"))); 

     container.RegisterType<IBusinessLogic, BusinessLogic2>("logic2 settings1 repository1", new InjectionConstructor(new ResolvedParameter<ISettings>("settings1"), new ResolvedParameter<IRepository>("repository1 settings1"))); 
     container.RegisterType<IBusinessLogic, BusinessLogic2>("logic2 settings2 repository1", new InjectionConstructor(new ResolvedParameter<ISettings>("settings2"), new ResolvedParameter<IRepository>("repository1 settings1"))); 

     container.RegisterType<IBusinessLogic, BusinessLogic2>("logic2 settings1 repository2", new InjectionConstructor(new ResolvedParameter<ISettings>("settings1"), new ResolvedParameter<IRepository>("repository2 settings2"))); 
     container.RegisterType<IBusinessLogic, BusinessLogic2>("logic2 settings2 repository2", new InjectionConstructor(new ResolvedParameter<ISettings>("settings2"), new ResolvedParameter<IRepository>("repository2 settings2"))); 

     string inputParam1 = "logic1"; 
     string inputParam2 = "settings2"; 
     string inputParam3 = "repository1"; 

     var instance = container.Resolve<IBusinessLogic>(inputParam1 + " " + inputParam2 + " " + inputParam3); 
    } 
}

編輯：

我找到了另一種方式，但我有依賴關係圖中明確指定每個覆蓋

class Program 
{ 
    static void Main(string[] args) 
    { 
     IUnityContainer container = new UnityContainer(); 
     container.RegisterType<ISettings, Settings1>("settings1"); 
     container.RegisterType<ISettings, Settings2>("settings2"); 

     container.RegisterType<IRepository, Repository1>("repository1"); 
     container.RegisterType<IRepository, Repository2>("repository2"); 

     container.RegisterType<IBusinessLogic, BusinessLogic1>("logic1"); 
     container.RegisterType<IBusinessLogic, BusinessLogic2>("logic2"); 

     string inputParam1 = "logic1"; 
     string inputParam2 = "settings1"; 
     string inputParam3 = "repository1"; 

     var instance = container.Resolve<IBusinessLogic>(inputParam1, new DependencyOverrides() 
      { 
       {typeof(ISettings),container.Resolve<ISettings>(inputParam2)}, 
       {typeof(IRepository),container.Resolve<IRepository>(inputParam3, new DependencyOverrides() 
        { 
         {typeof(ISettings),container.Resolve<ISettings>(inputParam2)} 
        }) 
       }, 
      }); 
    } 
}

我真正需要的是告訴容器 - 解決IBusinessLogic和使用在需要ISettings實例的依賴關係圖中，「settings1」命名實例無處不在。那可能嗎？

來源

2015-12-23 ekalchev

你能解釋一下這部分*「解決IBusinessLogic和使用‘’你需要ISettings實例依賴圖中處處命名實例」設置1 *？如果你只需要「settings1」，爲什麼要註冊「settings2」？另外，你能解釋你的代碼中哪些客戶端（類）需要哪些依賴關係嗎？ –

你的代碼中是否有'BusinessLogic2'？你似乎只有'BusinessLogic1'。 –

我修改了代碼並添加了BusinessLogic2 – ekalchev

這裏是你如何能做到這：

IUnityContainer container = new UnityContainer(); 
container.RegisterType<ISettings, Settings1>("settings1"); 
container.RegisterType<ISettings, Settings2>("settings2"); 

container.RegisterType<IRepository, Repository1>("repository1"); 
container.RegisterType<IRepository, Repository2>("repository2"); 

container.RegisterType<IBusinessLogic, BusinessLogic1>("logic1"); 
container.RegisterType<IBusinessLogic, BusinessLogic2>("logic2"); 

string inputParam1 = "logic1"; 
string inputParam2 = "settings1"; 
string inputParam3 = "repository1"; 

var result = container.Resolve<IBusinessLogic>(inputParam1, 
    new DependencyOverride<ISettings>(new ResolvedParameter<ISettings>(inputParam2)), 
    new DependencyOverride<IRepository>(new ResolvedParameter<IRepository>(inputParam3)));

來源

2015-12-23 21:04:09

非常感謝。這是我正在尋找的答案！ – ekalchev

統一DI，多個命名實例

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