mcs/class/corlib/System.Runtime.Serialization/SerializationObjectManager.cs

   1 //
   2 // System.Runtime.Serialization.SerializationObjectManager.cs
   3 //
   4 // Author:
   5 //   Robert Jordan (robertj@gmx.net)
   6 //
   7 // Copyright (C) 2006 Novell, Inc (http://www.novell.com)
   8 //
   9 // Permission is hereby granted, free of charge, to any person obtaining
  10 // a copy of this software and associated documentation files (the
  11 // "Software"), to deal in the Software without restriction, including
  12 // without limitation the rights to use, copy, modify, merge, publish,
  13 // distribute, sublicense, and/or sell copies of the Software, and to
  14 // permit persons to whom the Software is furnished to do so, subject to
  15 // the following conditions:
  16 //
  17 // The above copyright notice and this permission notice shall be
  18 // included in all copies or substantial portions of the Software.
  19 //
  20 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  23 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  24 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27 //
  28
  29 #if NET_2_0
  30
  31 using System;
  32 using System.Collections;
  33
  34 namespace System.Runtime.Serialization {
  35
  36         public sealed class SerializationObjectManager
  37         {
  38                 readonly StreamingContext context;
  39                 readonly Hashtable seen = new Hashtable ();
  40
  41                 event SerializationCallbacks.CallbackHandler callbacks;
  42
  43                 public SerializationObjectManager (StreamingContext context)
  44                 {
  45                         this.context = context;
  46                 }
  47
  48                 public void RegisterObject (object obj)
  49                 {
  50                         if (seen.Contains (obj))
  51                                 return;
  52
  53                         SerializationCallbacks sc = SerializationCallbacks
  54                                 .GetSerializationCallbacks (obj.GetType ());
  55
  56                         seen [obj] = 1;
  57                         sc.RaiseOnSerializing (obj, context);
  58
  59                         if (sc.HasSerializedCallbacks) {
  60                                 // record for later invocation
  61                                 callbacks += delegate (StreamingContext ctx)
  62                                 {
  63                                         sc.RaiseOnSerialized (obj, ctx);
  64                                 };
  65                         }
  66                 }
  67
  68                 public void RaiseOnSerializedEvent ()
  69                 {
  70                         if (callbacks != null)
  71                                 callbacks (context);
  72                 }
  73         }
  74 }
  75
  76 #endif