/src/LinFu.Proxy/ProxyObjectReference.cs

 1using System;
 2using System.Collections.Generic;
 3using System.Runtime.Serialization;
 4using LinFu.AOP.Interfaces;
 5using LinFu.Proxy.Interfaces;
 6
 7namespace LinFu.Proxy
 8{
 9    /// <summary>
10    ///     Represents a helper class that deserializes proxy instances.
11    /// </summary>
12    [Serializable]
13    public class ProxyObjectReference : IObjectReference, ISerializable
14    {
15        private readonly Type _baseType;
16        private readonly IProxy _proxy;
17
18        /// <summary>
19        ///     Initializes a new instance of the ProxyObjectReference class.
20        /// </summary>
21        /// <param name="info">The <see cref="SerializationInfo" /> class that contains the serialized data.</param>
22        /// <param name="context">The <see cref="StreamingContext" /> that describes the serialization state.</param>
23        protected ProxyObjectReference(SerializationInfo info, StreamingContext context)
24        {
25            // Deserialize the base type using its assembly qualified name
26            var qualifiedName = info.GetString("__baseType");
27            _baseType = Type.GetType(qualifiedName, true, false);
28
29            // Rebuild the list of interfaces
30            var interfaceList = new List<Type>();
31            var interfaceCount = info.GetInt32("__baseInterfaceCount");
32            for (var i = 0; i < interfaceCount; i++)
33            {
34                var keyName = string.Format("__baseInterface{0}", i);
35                var currentQualifiedName = info.GetString(keyName);
36                var interfaceType = Type.GetType(currentQualifiedName, true, false);
37
38                interfaceList.Add(interfaceType);
39            }
40
41            // Reconstruct the proxy
42            var factory = new ProxyFactory();
43            var proxyType = factory.CreateProxyType(_baseType, interfaceList.ToArray());
44            _proxy = (IProxy) Activator.CreateInstance(proxyType);
45
46            var interceptor = (IInterceptor) info.GetValue("__interceptor", typeof(IInterceptor));
47            _proxy.Interceptor = interceptor;
48        }
49
50
51        /// <summary>
52        ///     Returns the deserialized proxy instance.
53        /// </summary>
54        /// <param name="context">The <see cref="StreamingContext" /> that describes the serialization state.</param>
55        /// <returns></returns>
56        public object GetRealObject(StreamingContext context)
57        {
58            return _proxy;
59        }
60
61
62        /// <summary>
63        ///     Serializes the proxy to a stream.
64        /// </summary>
65        /// <remarks>This method override does nothing.</remarks>
66        /// <param name="info">The <see cref="SerializationInfo" /> class that contains the serialized data.</param>
67        /// <param name="context">The <see cref="StreamingContext" /> that describes the serialization state.</param>
68        public void GetObjectData(SerializationInfo info, StreamingContext context)
69        {
70        }
71    }
72}