1using System.Collections.Generic;
 2using System.Runtime.Remoting.Messaging;
 3using System.Runtime.Remoting.Proxies;
 4using gorilla.commons.utility;
 5
 6namespace Gorilla.Commons.Infrastructure.Proxies
 7{
 8    public class RemotingProxyFactory<T> : RealProxy
 9    {
10        readonly T target;
11        readonly IEnumerable<Interceptor> interceptors;
12
13        public RemotingProxyFactory(T target, IEnumerable<Interceptor> interceptors) : base(typeof (T))
14        {
15            this.target = target;
16            this.interceptors = interceptors;
17        }
18
19        public override IMessage Invoke(IMessage message)
20        {
21            if (message.is_an_implementation_of<IMethodCallMessage>())
22            {
23                var call = message.downcast_to<IMethodCallMessage>();
24                var invocation = new MethodCallInvocation<T>(interceptors, call, target);
25                invocation.proceed();
26                return return_value(invocation.return_value, invocation.arguments, call);
27            }
28            return null;
29        }
30
31        IMessage return_value(object return_value, object[] out_parameters, IMethodCallMessage call)
32        {
33            return new ReturnMessage(return_value,
34                                     out_parameters,
35                                     out_parameters == null ? 0 : out_parameters.Length,
36                                     call.LogicalCallContext, call);
37        }
38
39        public T create_proxy()
40        {
41            return GetTransparentProxy().downcast_to<T>();
42        }
43    }
44}