mcs/class/corlib/System.Runtime.Remoting/Identity.cs

   1 //
   2 // System.Runtime.Remoting.Identity.cs
   3 //
   4 // Author: Lluis Sanchez Gual (lsg@ctv.es)
   5 //
   6 // (C) 2002, Lluis Sanchez Gual
   7 //
   8
   9 using System.Runtime.Remoting.Messaging;
  10 using System.Runtime.Remoting.Proxies;
  11 using System.Runtime.Remoting.Contexts;
  12
  13 namespace System.Runtime.Remoting
  14 {
  15         internal class Identity
  16         {
  17                 // An Identity object holds remoting information about
  18                 // an object. It can be used to store client side information
  19                 // (information about how to reach the remote server),
  20                 // and also to store server side information (information
  21                 // about how to dispatch messages to the object in the server).
  22
  23                 // The object that this identity represents. Can be a MarshalByRefObject
  24                 // (if it is a server object) or a transparent proxy (if it is a client
  25                 // proxy to a remote object).
  26                 object _realObject;
  27
  28                 Type _objectType;
  29
  30                 // URI of the object
  31                 string _objectUri;
  32
  33                 // Message sink to use to send a message to the remote server
  34                 IMessageSink _clientSink = null;
  35
  36                 // Message sink used in the server to dispatch a message
  37                 // to the server object
  38                 IMessageSink _serverSink = null;
  39                 Context _context;
  40
  41                 ObjRef _objRef = null;
  42
  43                 public Identity(string objectUri, Context context, Type objectType)
  44                 {
  45                         _objectUri = objectUri;
  46                         _context = context;
  47                         _objectType = objectType;
  48                 }
  49
  50                 public ObjRef CreateObjRef (Type requestedType)
  51                 {
  52                         // fixme: handle requested_type
  53                         if (requestedType == null) requestedType = _objectType;
  54                         ObjRef res = new ObjRef ((MarshalByRefObject)_realObject, requestedType);
  55                         res.URI = _objectUri;
  56                         _objRef = res;
  57                         return res;
  58                 }
  59
  60                 public bool IsFromThisAppDomain
  61                 {
  62                         get
  63                         {
  64                                 // fixme: what if it is contextbound?
  65                                 return (_clientSink == null);
  66                         }
  67                 }
  68
  69                 public object RealObject
  70                 {
  71                         get     { return _realObject; }
  72                         set { _realObject = value; }
  73                 }
  74
  75                 public string ObjectUri
  76                 {
  77                         get { return _objectUri; }
  78                 }
  79
  80                 public IMessageSink ClientSink
  81                 {
  82                         get { return _clientSink; }
  83                         set { _clientSink = value; }
  84                 }
  85
  86                 public IMessageSink ServerSink
  87                 {
  88                         get
  89                         {
  90                                 if (_serverSink == null) {
  91                                         _serverSink = _context.CreateServerObjectSinkChain((MarshalByRefObject)_realObject);
  92                                 }
  93                                 return _serverSink;
  94                         }
  95                 }
  96
  97                 public Context Context
  98                 {
  99                         get { return _context; }
 100                 }
 101         }
 102 }