www.pudn.com > Websharp2005.rar > AspectManagedAttribute.cs

using System;  
using System.Runtime.Remoting.Proxies;  
using System.Security.Permissions;  
using System.Runtime.Remoting;  
using System.Runtime.Remoting.Contexts;  
using System.Reflection;  
  
namespace Websharp.Aspect  
{  
	/// 
  
	/// 自定义的Aspect代理特性，在这里，创建受Aspect管理的类的代理类。  
	/// 任何需要接受Aspect管理的类，都必须加上这个特性	  
	/// 

  
	/// 示例
  
	///   
	/// [AspectManaged]
  
	/// public class BusinessClass{}  
	///   
	/// 
  
	///   
	///   
	/// [AspectManaged]  
	/// public class BusinessClass{}  
	///   
	///   
	[AttributeUsage(AttributeTargets.Class)]  
	[SecurityPermissionAttribute(SecurityAction.Demand, Flags=SecurityPermissionFlag.Infrastructure)]  
	public class AspectManagedAttribute : ProxyAttribute  
	{  
		private bool aspectManaged;  
  
		/// 
  
		/// 默认构造函数  
		/// 
  
		public AspectManagedAttribute()  
		{  
			aspectManaged=true;  
		}  
		/// 
  
		/// 构造函数  
		/// 
  
		/// 指明该类是否接受Aspect管理  
		public AspectManagedAttribute(bool AspectManaged)  
		{  
			aspectManaged=AspectManaged;  
		}  
  
		/// 
  
		/// 创建受Aspect管理的类的代理类  
		/// 
  
		/// 要创建的类的类型  
		/// 受Aspect管理的类的代理类  
		public override MarshalByRefObject CreateInstance(Type serverType)  
		{    
			MarshalByRefObject mobj= base.CreateInstance(serverType);  
			if(aspectManaged)  
			{  
				RealProxy realProxy = new AspectProxy(serverType,mobj);  
				MarshalByRefObject retobj = realProxy.GetTransparentProxy() as MarshalByRefObject;  
				return retobj;  
			}  
			else  
			{  
				return mobj;  
			}  
		}  
  
		#region  obsolesce code  
		/*  
		public override RealProxy CreateProxy(ObjRef objRef1,Type serverType,object serverObject,Context serverContext)  
		{  
			return new AspectProxy(serverType,serverObject as MarshalByRefObject);  
  
			AspectProxy myCustomProxy = new AspectProxy(serverType);  
			if(serverContext != null)  
			{  
				RealProxy.SetStubData(myCustomProxy,serverContext);  
			}  
			if((!serverType.IsMarshalByRef)&&(serverContext == null))  
			{  
				throw new RemotingException("Bad Type for CreateProxy");  
			}  
			return myCustomProxy;  
		}  
		*/  
		#endregion  
	}  
}