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

using System;  
using System.Runtime.Remoting.Messaging;  
using System.Runtime.Remoting;  
using System.Data;  
using System.Configuration;  
using System.Collections;  
using System.Text.RegularExpressions;  
  
namespace Websharp.Aspect  
{  
	/// 
  
	/// 管理Aspects的类   
	/// 
  
	public class AspectsManager  
	{  
		/// 
  
		/// 所有的Aspect集合  
		/// 
  
		static AspectInfoCollection aspects=new AspectInfoCollection();  
		/// 
  
		/// Aspect和被拦截类的映射表  
		/// 
  
		static Hashtable aspectsMatch=new Hashtable();   
		/// 
  
		/// 所有的Aspect集合  
		/// 
  
		internal static AspectInfoCollection Aspects  
		{  
			get{return aspects;}  
		}  
		/// 
  
		/// 静态构造函数，在这里，读取相关配置信息。  
		/// 
  
		static AspectsManager()  
		{  
			ConfigurationSettings.GetConfig("Websharp.Aspects");  
		}  
		  
		/// 
  
		/// 获取相关的Aspects  
		/// 
  
		/// IMessage，包含有关方法调用的信息。  
		/// 拦截的位置  
		/// Aspect数组  
		public static IAspect[] GetAspect(IMessage msg,AspectActionPosition position)  
		{  
			IMethodMessage mmsg = msg as IMethodMessage;  
			ArrayList al=new ArrayList();  
			string fullMethodInfo=mmsg.MethodBase.ReflectedType.FullName+"--"+mmsg.MethodName;  
  
			for(int i=0;i-1)  
					{  
						AddAspect(fullMethodInfo,aspects[i],position,ref al,true);  
					}  
				}  
			}  
			else  
			{  
				for(int i=0;i-1) || (aspects[i].PointCutType.IndexOf("Property")>-1))  
					{  
						AddAspect(fullMethodInfo,aspects[i],position,ref al,false);  
					}  
				}  
			}  
			return (IAspect[]) al.ToArray(typeof(IAspect));  
			*/  
			#endregion  
		}  
  
		/// 
  
		/// 添加Aspect和被拦截类的映射。缓存该信息已获得好的性能  
		/// 
  
		/// IMessage，包含有关方法调用的信息。  
		/// Aspect配置信息  
		/// 拦截的位置  
		private static void AddAspectMatch(IMethodMessage mmsg,AspectInfo aspectInfo,AspectActionPosition position)  
		{  
			bool match = (aspectInfo.ActionPosition.Equals("Both") ||position.ToString().Equals(aspectInfo.ActionPosition));  
			if(match)  
			{  
				//首先校验是否Match类  
				if(aspectInfo.MatchClass.IndexOf("*")>-1)  
				{  
					string clssName=aspectInfo.MatchClass;  
					if(clssName.StartsWith("*"))  
					{  
						clssName=clssName.Substring(1,clssName.Length-1);  
					}  
					match=Regex.IsMatch(mmsg.MethodBase.ReflectedType.FullName,clssName);  
				}  
				else  
				{  
					match=(mmsg.MethodBase.ReflectedType.FullName.Equals(aspectInfo.MatchClass)   
						|| mmsg.MethodBase.ReflectedType.Name.Equals(aspectInfo.MatchClass));  
				}  
				//校验是否Match方法  
				if(match)  
				{  
					match=mmsg.MethodBase.IsConstructor;  
					if(match)  
					{  
						match = (aspectInfo.PointCutType.IndexOf("Construction")>-1);  
					}  
					else  
					{  
						match = ((aspectInfo.PointCutType.IndexOf("Method")>-1) || (aspectInfo.PointCutType.IndexOf("Property")>-1));  
						if(match)  
						{  
							if(aspectInfo.MatchMethod.IndexOf("*")>-1)  
							{  
								string methodName=aspectInfo.MatchMethod;  
								if(methodName.StartsWith("*"))  
								{  
									methodName=methodName.Substring(1,methodName.Length-1);  
								}  
								match=Regex.IsMatch(mmsg.MethodName,methodName);  
							}  
							else  
							{  
								match=(mmsg.MethodName.Equals(aspectInfo.MatchMethod));  
							}  
						}  
					}  
				}  
			}  
			aspectsMatch.Add(GetMatchHashKey(mmsg,aspectInfo,position),match);  
		}  
  
		/// 
  
		/// 获取Aspect和被拦截类的映射的HashKey  
		/// 
  
		/// IMessage，包含有关方法调用的信息。  
		/// Aspect配置信息  
		/// 拦截的位置  
		/// HashKey  
		private static string GetMatchHashKey(IMethodMessage mmsg,AspectInfo aspectInfo,AspectActionPosition position)  
		{  
			return mmsg.MethodBase.ReflectedType.FullName+"--"+mmsg.MethodName+aspectInfo.MatchPattern+position.ToString();  
		}  
  
		#region 废止的代码  
		/*  
		private static void AddAspect(string fullMethodInfo,AspectInfo aspectInfo,AspectActionPosition position,ref ArrayList al,bool isConstruct)  
		{  
			if(isConstruct || Regex.IsMatch(fullMethodInfo,aspectInfo.MatchPattern) &&   
				(aspectInfo.ActionPosition.Equals("Both") ||position.ToString().Equals(aspectInfo.ActionPosition)))  
			{  
				IAspect asp;  
				if(aspectInfo.DeployModell.Equals("Singleton"))  
				{  
					asp=aspectInfo.SingletonAspect;  
				}  
				else  
				{  
					asp=Activator.CreateInstance(aspectInfo.AssemblyName,aspectInfo.ClassName).Unwrap() as IAspect;  
				}  
				al.Add(asp);  
			}  
		}  
		*/  
		#endregion  
  
	}  
}