/// <summary>
/// 获取相关的Aspects
/// </summary>
/// <param name="msg">IMessage，包含有关方法调用的信息。</param>
/// <param name="position">拦截的位置</param>
/// <returns>Aspect数组</returns>
public IInjection[] GetAspect(IMessage msg, AspectActionPosition position)
{
IMethodMessage mmsg = msg as IMethodMessage;
List <IInjection> al = new List <IInjection>();
string fullMethodInfo = mmsg.MethodBase.ReflectedType.FullName + "--" + mmsg.MethodName;
for (int i = 0; i < _Aspects.Count; i++)
{
string key = GetMatchHashKey(mmsg, _Aspects[i], position);
if (!_AspectsMatch.ContainsKey(key))
{
lock (_AspectsMatch) {
if (!_AspectsMatch.ContainsKey(key))
{
AddAspectMatch(mmsg, _Aspects[i], position);
}
}
}
if (_AspectsMatch[key])
{
IInjection asp;
if (_Aspects[i].DeployModell.Equals("Singleton"))
{
asp = _Aspects[i].SingletonAspect;
}
else
{
asp = Activator.CreateInstance(_Aspects[i].AssemblyName, _Aspects[i].ClassName).Unwrap() as IInjection;
}
al.Add(asp);
}
}
return((IInjection[])al.ToArray());
}
//添加Aspect和被拦截类的映射。缓存该信息已获得好的性能
private 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[GetMatchHashKey(mmsg, aspectInfo, position)] = match;
}
// 获取Aspect和被拦截类的映射的HashKey
private string GetMatchHashKey(IMethodMessage mmsg, AspectInfo aspectInfo, AspectActionPosition position)
{
return(mmsg.MethodBase.ReflectedType.FullName + "--" + mmsg.MethodName + aspectInfo.MatchPattern + position.ToString());
}
