mcs/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         public sealed class LogicalCallContext : ISerializable, ICloneable
  41         {
  42                 Hashtable _data;
  43                 CallContextRemotingData _remotingData = new CallContextRemotingData();
  44
  45                 internal LogicalCallContext ()
  46                 {
  47                 }
  48
  49                 internal LogicalCallContext (SerializationInfo info, StreamingContext context)
  50                 {
  51                         foreach (SerializationEntry entry in info)
  52                         {
  53                                 if (entry.Name == "__RemotingData")
  54                                         _remotingData = (CallContextRemotingData) entry.Value;
  55                                 else
  56                                         SetData (entry.Name, entry.Value);
  57                         }
  58                 }
  59
  60                 public bool HasInfo
  61                 {
  62                         get
  63                         {
  64                                 return (_data != null && _data.Count > 0);
  65                         }
  66                 }
  67
  68                 public void FreeNamedDataSlot (string name)
  69                 {
  70                         if (_data != null)
  71                                 _data.Remove (name);
  72                 }
  73
  74                 public object GetData (string name)
  75                 {
  76                         if (_data != null) return _data [name];
  77                         else return null;
  78                 }
  79
  80                 public void GetObjectData (SerializationInfo info, StreamingContext context)
  81                 {
  82                         info.AddValue ("__RemotingData", _remotingData);
  83                         if (_data != null)
  84                         {
  85                                 foreach (DictionaryEntry de in _data)
  86                                         info.AddValue ((string)de.Key, de.Value);
  87                         }
  88                 }
  89
  90                 public void SetData (string name, object data)
  91                 {
  92                         if (_data == null) _data = new Hashtable ();
  93                         _data [name] = data;
  94                 }
  95
  96                 public object Clone ()
  97                 {
  98                         LogicalCallContext nc = new LogicalCallContext ();
  99                         nc._remotingData = (CallContextRemotingData) _remotingData.Clone ();
 100                         if (_data != null)
 101                         {
 102                                 nc._data = new Hashtable ();
 103                                 foreach (DictionaryEntry de in _data)
 104                                         nc._data [de.Key] = de.Value;
 105                         }
 106                         return nc;
 107                 }
 108
 109                 internal Hashtable Datastore
 110                 {
 111                         get { return _data; }
 112                 }
 113         }
 114
 115         [Serializable]
 116         internal class CallContextRemotingData : ICloneable
 117         {
 118                 string _logicalCallID;
 119
 120                 public string LogicalCallID
 121                 {
 122                         get { return _logicalCallID; }
 123                         set { _logicalCallID = value; }
 124                 }
 125
 126                 public object Clone ()
 127                 {
 128                         CallContextRemotingData data = new CallContextRemotingData ();
 129                         data._logicalCallID = _logicalCallID;
 130                         return data;
 131                 }
 132 }
 133 }
 134