mcs/class/System.Messaging/System.Messaging/XmlMessageFormatter.cs

   1 //
   2 // System.Messaging
   3 //
   4 // Authors:
   5 //      Peter Van Isacker (sclytrack@planetinternet.be)
   6 //      Rafael Teixeira   (rafaelteixeirabr@hotmail.com)
   7 //
   8 //      (C) 2003 Peter Van Isacker
   9 //
  10
  11 //
  12 // Permission is hereby granted, free of charge, to any person obtaining
  13 // a copy of this software and associated documentation files (the
  14 // "Software"), to deal in the Software without restriction, including
  15 // without limitation the rights to use, copy, modify, merge, publish,
  16 // distribute, sublicense, and/or sell copies of the Software, and to
  17 // permit persons to whom the Software is furnished to do so, subject to
  18 // the following conditions:
  19 //
  20 // The above copyright notice and this permission notice shall be
  21 // included in all copies or substantial portions of the Software.
  22 //
  23 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  24 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  25 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  26 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  27 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  28 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  29 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  30 //
  31
  32 using System;
  33 using System.Collections;
  34 using System.ComponentModel;
  35 using System.IO;
  36 using System.Xml.Serialization;
  37
  38
  39 namespace System.Messaging
  40 {
  41         public class XmlMessageFormatter: IMessageFormatter, ICloneable
  42         {
  43                 private ArrayList targetTypes = new ArrayList ();
  44
  45                 public XmlMessageFormatter()
  46                 {
  47                 }
  48
  49                 public XmlMessageFormatter(string[] targetTypeNames) : this (GetTypesFromNames (targetTypeNames))
  50                 {
  51                 }
  52
  53                 public XmlMessageFormatter(Type[] targetTypes)
  54                 {
  55                         this.targetTypes = new ArrayList (targetTypes);
  56                 }
  57
  58                 private static Type[] GetTypesFromNames(string[] targetTypeNames)
  59                 {
  60                         Type[] ts = new Type[targetTypeNames.Length];
  61                         for (int i = 0; i < targetTypeNames.Length; i++)
  62                                 ts[i] = Type.GetType (targetTypeNames[i]);
  63
  64                         return ts;
  65                 }
  66
  67                 [MessagingDescription ("XmlMsgTargetTypeNames")]
  68                 public string[] TargetTypeNames
  69                 {
  70                         get
  71                         {
  72                                 if (targetTypes == null)
  73                                         return null;
  74
  75                                 ArrayList listOfNames = new ArrayList (targetTypes.Count);
  76                                 foreach (Type type in targetTypes)
  77                                         listOfNames.Add (type.FullName);
  78                                 return (string[]) listOfNames.ToArray (typeof (string));
  79                         }
  80                         set { TargetTypes = GetTypesFromNames (value); }
  81                 }
  82
  83                 [Browsable (false)]
  84                 [DesignerSerializationVisibility (DesignerSerializationVisibility.Hidden)]
  85                 [MessagingDescription ("XmlMsgTargetTypes")]
  86                 public Type[] TargetTypes
  87                 {
  88                         get { return (Type[]) targetTypes.ToArray (typeof (Type)); }
  89                         set { targetTypes = new ArrayList (value); }
  90                 }
  91
  92                 [MonoTODO]
  93                 public bool CanRead(Message message)
  94                 {
  95                         // Need an implementation of XmlNodeReader.
  96                         throw new NotImplementedException();
  97                 }
  98
  99                 public object Clone()
 100                 {
 101                         return new XmlMessageFormatter((Type[])TargetTypes.Clone());
 102                 }
 103
 104                 private void AddType (Type t)
 105                 {
 106                         targetTypes.Add (t);
 107                 }
 108
 109                 public object Read(Message message)
 110                 {
 111                         message.BodyStream.Seek (0, SeekOrigin.Begin);
 112                         object result = null;
 113                         foreach (Type t in targetTypes) {
 114                                 XmlSerializer serializer = new XmlSerializer (t);
 115                                 try {
 116                                         return serializer.Deserialize (message.BodyStream);
 117                                 } catch (InvalidOperationException e) {
 118                                         Console.WriteLine (e);
 119                                 }
 120                         }
 121                         string error = "Unable to deserialize message body.  Type is not one of: "
 122                                 + String.Join (",", TargetTypeNames);
 123                         throw new InvalidOperationException (error);
 124                 }
 125
 126                 public void Write(Message message, object obj)
 127                 {
 128                         if (message == null)
 129                                 throw new ArgumentNullException ();
 130
 131                         Stream stream = message.BodyStream;
 132                         if (stream == null) {
 133                                 stream = new MemoryStream ();
 134                                 message.BodyStream = stream;
 135                         }
 136
 137                         XmlSerializer serializer = new XmlSerializer (obj.GetType ());
 138                         serializer.Serialize (stream, obj);
 139
 140                         message.BodyType = (int) FormatterTypes.Xml;
 141                         AddType (obj.GetType ());
 142                 }
 143         }
 144 }