註冊城堡windsor中的通用裝飾器？

Question

我想裝飾使用城堡windsor我的命令處理程序，但似乎我的註冊是不正確的，因爲該類沒有裝飾。

我有以下的安裝程序：

internal class CommandsInstaller : IWindsorInstaller 
{ 
    public void Install(IWindsorContainer container, IConfigurationStore store) 
    { 
     container.Register(
      Component.For<IDbConnection>() 
       .UsingFactoryMethod(() => ConnectionHelper.GetOpenDbConnection(Connection.DatabaseName.ReedOnline)) 
       .LifestylePerWebRequest()); 

     container.Register(
      Classes 
       .FromAssemblyContaining<EcruiterCommands>() 
       .Where(t => t.Name.EndsWith("Commands")) 
       .WithService 
       .AllInterfaces().LifestylePerWebRequest()); 

     container.Register(
      Classes 
       .FromAssemblyContaining<EcruiterCommands>() 
       .Where(t => t.Name.EndsWith("CommandHandler")) 
       .WithService.AllInterfaces() 
       .LifestylePerWebRequest()); 

     container.Register(Component.For(typeof (ICommandHandler<>)) 
      .ImplementedBy(typeof (TransactionCommandHandlerDecorator<>)) 
      .IsDefault() 
      .LifestylePerWebRequest()); 

     container.Register(Component.For(typeof (ICommandHandler<>)) 
      .ImplementedBy(typeof (ExceptionHandlingCommandHandlerDecorator<>)) 
      .IsDefault() 
      .LifestylePerWebRequest());    
    } 
} 

，這是我的裝飾：

namespace TempSearch.Ioc.Decorators.CommandHandlers 
{ 
    public class TransactionCommandHandlerDecorator<TCommand> : ICommandHandler<TCommand> 
    { 
     private readonly ICommandHandler<TCommand> decorated; 

     public TransactionCommandHandlerDecorator(ICommandHandler<TCommand> decorated) 
     { 
      this.decorated = decorated; 
     } 

     public void Handle(TCommand command) 
     { 
      using (var scope = new TransactionScope()) 
      { 
       decorated.Handle(command); 
       scope.Complete(); 
      } 
     } 
    } 
} 

---

另外我想知道如果我的裝修應該活在組合物根或組裝他們正在裝修的班級。現在，我讓他們搬到了組成根爲溫莎城堡試圖與其他類一起註冊我的裝飾，我會得到錯誤：

Component TempSearch.Command.Data.Decorators.TransactionCommandHandlerDecorator`1 could not be registered. 
There is already a component with that name. 
Did you want to modify the existing component instead? 
If not, make sure you specify a unique name. 

Answer 1

首先，關於「已經被註冊」的錯誤，你是註冊您的組件兩次

container.Register(
    Classes 
     .FromAssemblyContaining<EcruiterCommands>() 
     .BasedOn(typeof (ICommandHandler<>)) 
     .WithService.AllInterfaces() 
     .LifestylePerWebRequest()); 

這個註冊是基於ICommandHandler<>所有類，所以TransactionCommandHandlerDecorator已註冊

關於你要去的裝飾圖案，我會用它實現改爲城堡的interceptors。我發現裝飾者模式是在Castle中做not very easy;這個答案相當老舊，Castle從那時起就改變了，所以我可能是錯的，但攔截器是你想要的。