class/corlib/System.Runtime.Remoting.Messaging/RemotingSurrogateSelector.cs

   1 //
   2 // System.Runtime.Remoting.Messaging.RemotingSurrogateSelector.cs
   3 //
   4 // Author: Duncan Mak  (duncan@ximian.com)
   5 //         Lluis Sanchez Gual (lluis@ideary.com)
   6 //         Patrik Torstensson
   7 //
   8 // (C) Ximian, Inc.  http://www.ximian.com
   9 //
  10
  11 //
  12 // Copyright (C) 2004 Novell, Inc (http://www.novell.com)
  13 //
  14 // Permission is hereby granted, free of charge, to any person obtaining
  15 // a copy of this software and associated documentation files (the
  16 // "Software"), to deal in the Software without restriction, including
  17 // without limitation the rights to use, copy, modify, merge, publish,
  18 // distribute, sublicense, and/or sell copies of the Software, and to
  19 // permit persons to whom the Software is furnished to do so, subject to
  20 // the following conditions:
  21 //
  22 // The above copyright notice and this permission notice shall be
  23 // included in all copies or substantial portions of the Software.
  24 //
  25 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  26 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  27 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  28 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  29 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  30 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  31 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  32 //
  33
  34 using System;
  35 using System.Runtime.Serialization;
  36
  37 namespace System.Runtime.Remoting.Messaging {
  38
  39 #if NET_2_0
  40         [System.Runtime.InteropServices.ComVisible (true)]
  41 #endif
  42         public class RemotingSurrogateSelector : ISurrogateSelector
  43         {
  44                 static Type s_cachedTypeObjRef = typeof(ObjRef);
  45                 static ObjRefSurrogate _objRefSurrogate = new ObjRefSurrogate();
  46                 static RemotingSurrogate _objRemotingSurrogate = new RemotingSurrogate();
  47
  48                 Object _rootObj = null;
  49                 MessageSurrogateFilter _filter = null;
  50                 ISurrogateSelector _next;
  51
  52                 public RemotingSurrogateSelector ()
  53                 {
  54                 }
  55
  56                 public MessageSurrogateFilter Filter {
  57                         get { return _filter; }
  58                         set { _filter = value; }
  59                 }
  60
  61                 public virtual void ChainSelector (ISurrogateSelector selector)
  62                 {
  63                         if (_next != null) selector.ChainSelector (_next);
  64                         _next = selector;
  65                 }
  66
  67                 public virtual ISurrogateSelector GetNextSelector()
  68                 {
  69                         return _next;
  70                 }
  71
  72                 public object GetRootObject ()
  73                 {
  74                         return _rootObj;
  75                 }
  76
  77                 public virtual ISerializationSurrogate GetSurrogate (
  78                         Type type, StreamingContext context, out ISurrogateSelector ssout)
  79                 {
  80                         if (type.IsMarshalByRef)
  81                         {
  82                                 ssout = this;
  83                                 return _objRemotingSurrogate;
  84                         }
  85
  86                         if (s_cachedTypeObjRef.IsAssignableFrom (type))
  87                         {
  88                                 ssout = this;
  89                                 return _objRefSurrogate;
  90                         }
  91
  92                         if (_next != null) return _next.GetSurrogate (type, context, out ssout);
  93
  94                         ssout = null;
  95                         return null;
  96                 }
  97
  98                 public void SetRootObject (object obj)
  99                 {
 100                         if (obj == null)
 101                                 throw new ArgumentNullException ();
 102
 103                         _rootObj = obj;
 104                 }
 105
 106                 [MonoTODO]
 107                 public virtual void UseSoapFormat ()
 108                 {
 109                         throw new NotImplementedException ();
 110                 }
 111         }
 112 }