89 lines
3.5 KiB
C#
89 lines
3.5 KiB
C#
using System.Runtime.Remoting.Proxies;
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using System.Runtime.Remoting.Messaging;
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using System.Runtime.Remoting.Activation;
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using System.Runtime.Remoting;
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using System;
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using System.Reflection;
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using System.Runtime.Remoting.Services;
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namespace CYQ.Data.Orm
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{
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class AopAttribute : ProxyAttribute
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{
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public override MarshalByRefObject CreateInstance(Type serverType)
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{
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AopProxy realProxy = new AopProxy(serverType, base.CreateInstance(serverType));
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return realProxy.GetTransparentProxy() as MarshalByRefObject;
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}
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}
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class AopProxy : RealProxy
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{
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MethodInfo method;
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MarshalByRefObject _target = null;
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public AopProxy(Type serverType, MarshalByRefObject target)
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: base(serverType)
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{
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_target = target;
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method = serverType.GetMethod("Set", BindingFlags.NonPublic | BindingFlags.Instance);
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}
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public override IMessage Invoke(IMessage msg)
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{
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if (msg != null)
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{
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if (msg is IConstructionCallMessage)
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{
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IConstructionCallMessage constructCallMsg = msg as IConstructionCallMessage;
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//IConstructionReturnMessage constructionReturnMessage = this.InitializeServerObject((IConstructionCallMessage)msg);
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//RealProxy.SetStubData(this, constructionReturnMessage.ReturnValue);
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//return constructionReturnMessage;
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RealProxy defaultProxy = RemotingServices.GetRealProxy(_target);
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//如果不做下面这一步，_target还是一个没有直正实例化被代理对象的透明代理，
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//这样的话，会导致没有直正构建对象。
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defaultProxy.InitializeServerObject(constructCallMsg);
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//本类是一个RealProxy，它可通过GetTransparentProxy函数得到透明代理
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return EnterpriseServicesHelper.CreateConstructionReturnMessage(constructCallMsg, (MarshalByRefObject)GetTransparentProxy());
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}
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else if (msg is IMethodCallMessage)
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{
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IMethodCallMessage callMsg = msg as IMethodCallMessage;
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object[] args = callMsg.Args;
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//System.Windows.Forms.MessageBox.Show(callMsg.MethodBase.ToString());
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if (callMsg.MethodName.StartsWith("set_") && args.Length == 1)
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{
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method.Invoke(_target, new object[] { callMsg.MethodName.Substring(4), args[0] });//对属性进行调用
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}
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return RemotingServices.ExecuteMessage(_target, callMsg);
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//IMessage message = null;
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//try
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//{
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// MarshalByRefObject obj = GetUnwrappedServer();
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// if (callMsg.MethodName.StartsWith("set_") && args.Length == 1)
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// {
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// method.Invoke(obj, new object[] { callMsg.MethodName.Substring(4), args[0] });//对属性进行调用
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// }
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// object o = callMsg.MethodBase.Invoke(obj, args);
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// message = new ReturnMessage(o, args, args.Length, callMsg.LogicalCallContext, callMsg);
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//}
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//catch (Exception e)
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//{
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// message = new ReturnMessage(e, callMsg);
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//}
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//return message;
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}
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}
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return msg;
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}
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}
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}
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