mcs/class/System.Messaging/System.Messaging/BinaryMessageFormatter.cs

   1
   2 //
   3 // Permission is hereby granted, free of charge, to any person obtaining
   4 // a copy of this software and associated documentation files (the
   5 // "Software"), to deal in the Software without restriction, including
   6 // without limitation the rights to use, copy, modify, merge, publish,
   7 // distribute, sublicense, and/or sell copies of the Software, and to
   8 // permit persons to whom the Software is furnished to do so, subject to
   9 // the following conditions:
  10 //
  11 // The above copyright notice and this permission notice shall be
  12 // included in all copies or substantial portions of the Software.
  13 //
  14 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  15 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  16 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  17 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  18 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  19 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  20 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  21 //
  22
  23 //
  24 // System.Messaging
  25 //
  26 // Authors:
  27 //      Peter Van Isacker (sclytrack@planetinternet.be)
  28 //      Rafael Teixeira   (rafaelteixeirabr@hotmail.com)
  29 //      Michael Barker    (mike@middlesoft.co.uk)
  30 //
  31 // (C) 2003 Peter Van Isacker
  32 //
  33
  34 using System;
  35 using System.ComponentModel;
  36 using System.IO;
  37 using System.Runtime.Serialization.Formatters;
  38 using System.Runtime.Serialization.Formatters.Binary;
  39
  40 namespace System.Messaging
  41 {
  42         public class BinaryMessageFormatter : IMessageFormatter, ICloneable
  43         {
  44                 private BinaryFormatter _formatter;
  45
  46                 public BinaryMessageFormatter ()
  47                 {
  48                         _formatter = new BinaryFormatter ();
  49                 }
  50
  51                 public BinaryMessageFormatter (FormatterAssemblyStyle topObjectFormat, FormatterTypeStyle typeFormat)
  52                 {
  53                         _formatter = new BinaryFormatter ();
  54                         _formatter.AssemblyFormat = topObjectFormat;
  55                         _formatter.TypeFormat = typeFormat;
  56                 }
  57
  58                 [DefaultValue (0)]
  59                 [MessagingDescription ("MsgTopObjectFormat")]
  60                 public FormatterAssemblyStyle TopObjectFormat {
  61                         get {
  62                                 return _formatter.AssemblyFormat;
  63                         }
  64                         set {
  65                                 _formatter.AssemblyFormat = value;
  66                         }
  67                 }
  68
  69                 [DefaultValue (0)]
  70                 [MessagingDescription ("MsgTypeFormat")]
  71                 public FormatterTypeStyle TypeFormat {
  72                         get {
  73                                 return _formatter.TypeFormat;
  74                         }
  75                         set {
  76                                 _formatter.TypeFormat = value;
  77                         }
  78                 }
  79
  80                 [MonoTODO ("only return true if body type is binary")]
  81                 public bool CanRead (Message message)
  82                 {
  83                         if (message == null)
  84                                 throw new ArgumentNullException ();
  85
  86                         return message.BodyStream.CanRead;
  87                 }
  88
  89                 [MonoTODO ("throw InvalidOperationException if message body is not binary")]
  90                 public object Read (Message message)
  91                 {
  92                         if (message == null)
  93                                 throw new ArgumentNullException ();
  94
  95                         message.BodyStream.Seek (0, SeekOrigin.Begin);
  96                         return _formatter.Deserialize (message.BodyStream);
  97                 }
  98
  99                 [MonoTODO ("throw InvalidOperationException if message body is not binary")]
 100                 public void Write (Message message, object obj)
 101                 {
 102                         if (message == null)
 103                                 throw new ArgumentNullException ();
 104
 105                         Stream stream = message.BodyStream;
 106                         if (stream == null) {
 107                                 stream = new MemoryStream ();
 108                                 message.BodyStream = stream;
 109                         }
 110
 111                         message.BodyType = 768;
 112                         _formatter.Serialize (stream, obj);
 113                 }
 114
 115                 public object Clone ()
 116                 {
 117                         return new BinaryMessageFormatter (TopObjectFormat, TypeFormat);
 118                 }
 119         }
 120 }