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

   1 //
   2 // System.Runtime.Remoting.Messaging.LogicalCallContext.cs
   3 //
   4 // Author:
   5 //   Dan Lewis (dihlewis@yahoo.co.uk)
   6 //   Lluis Sanchez Gual (lluis@ximian.com)
   7 //
   8 // 2002 (C) Copyright. Ximian, Inc.
   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.Collections;
  35 using System.Runtime.Serialization;
  36
  37 namespace System.Runtime.Remoting.Messaging
  38 {
  39         [Serializable]
  40         [System.Runtime.InteropServices.ComVisible (true)]
  41         public sealed class LogicalCallContext : ISerializable, ICloneable
  42         {
  43                 Hashtable _data;
  44                 CallContextRemotingData _remotingData = new CallContextRemotingData();
  45
  46                 internal LogicalCallContext ()
  47                 {
  48                 }
  49
  50                 internal LogicalCallContext (SerializationInfo info, StreamingContext context)
  51                 {
  52                         foreach (SerializationEntry entry in info)
  53                         {
  54                                 if (entry.Name == "__RemotingData")
  55                                         _remotingData = (CallContextRemotingData) entry.Value;
  56                                 else
  57                                         SetData (entry.Name, entry.Value);
  58                         }
  59                 }
  60
  61                 public bool HasInfo
  62                 {
  63                         get
  64                         {
  65                                 return (_data != null && _data.Count > 0);
  66                         }
  67                 }
  68
  69                 public void FreeNamedDataSlot (string name)
  70                 {
  71                         if (_data != null)
  72                                 _data.Remove (name);
  73                 }
  74
  75                 public object GetData (string name)
  76                 {
  77                         if (_data != null) return _data [name];
  78                         else return null;
  79                 }
  80
  81                 public void GetObjectData (SerializationInfo info, StreamingContext context)
  82                 {
  83                         info.AddValue ("__RemotingData", _remotingData);
  84                         if (_data != null)
  85                         {
  86                                 foreach (DictionaryEntry de in _data)
  87                                         info.AddValue ((string)de.Key, de.Value);
  88                         }
  89                 }
  90
  91                 public void SetData (string name, object data)
  92                 {
  93                         if (_data == null) _data = new Hashtable ();
  94                         _data [name] = data;
  95                 }
  96
  97                 public object Clone ()
  98                 {
  99                         LogicalCallContext nc = new LogicalCallContext ();
 100                         nc._remotingData = (CallContextRemotingData) _remotingData.Clone ();
 101                         if (_data != null)
 102                         {
 103                                 nc._data = new Hashtable ();
 104                                 foreach (DictionaryEntry de in _data)
 105                                         nc._data [de.Key] = de.Value;
 106                         }
 107                         return nc;
 108                 }
 109
 110                 internal Hashtable Datastore
 111                 {
 112                         get { return _data; }
 113                 }
 114         }
 115
 116         [Serializable]
 117         internal class CallContextRemotingData : ICloneable
 118         {
 119                 string _logicalCallID;
 120
 121                 public string LogicalCallID
 122                 {
 123                         get { return _logicalCallID; }
 124                         set { _logicalCallID = value; }
 125                 }
 126
 127                 public object Clone ()
 128                 {
 129                         CallContextRemotingData data = new CallContextRemotingData ();
 130                         data._logicalCallID = _logicalCallID;
 131                         return data;
 132                 }
 133 }
 134 }
 135