注册城堡windsor中的通用装饰器？

Question

我想装饰使用城堡windsor我的命令处理程序，但似乎我的注册是不正确的，因为该类没有装饰。

我有以下的安装程序：

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());    
    } 
} 

，这是我的装饰：

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装修应该活在组合物根或组装他们正在装修的班级。现在，我让他们搬到了组成根为温莎城堡试图与其他类一起注册我的装饰，我会得到错误：

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，关于“已经被注册”的错误，你是注册您的组件两次

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

这个注册是基于ICommandHandler<>所有类，所以TransactionCommandHandlerDecorator已注册

关于你要去的装饰图案，我会用它实现改为城堡的interceptors。我发现装饰者模式是在Castle中做not very easy;这个答案相当老旧，Castle从那时起就改变了，所以我可能是错的，但拦截器是你想要的。