class/System.ServiceModel/System.ServiceModel.Channels/MessageBufferImpl.cs

   1 //
   2 // MessageBufferImpl.cs
   3 //
   4 // Author:
   5 //      Duncan Mak (duncan@novell.com)
   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 using System;
  29 using System.Runtime.Serialization;
  30 using System.Xml;
  31 using System.Xml.XPath;
  32
  33 namespace System.ServiceModel.Channels
  34 {
  35         internal class DefaultMessageBuffer : MessageBuffer
  36         {
  37                 MessageHeaders headers;
  38                 MessageProperties properties;
  39                 BodyWriter body;
  40                 bool closed, is_fault;
  41                 int max_buffer_size;
  42
  43                 internal DefaultMessageBuffer (MessageHeaders headers, MessageProperties properties)
  44                         : this (0, headers, properties, null, false)
  45                 {
  46                 }
  47
  48                 internal DefaultMessageBuffer (int maxBufferSize, MessageHeaders headers, MessageProperties properties, BodyWriter body, bool isFault)
  49                 {
  50                         this.max_buffer_size = maxBufferSize;
  51                         this.headers = headers;
  52                         this.body = body;
  53                         this.closed = false;
  54                         this.is_fault = isFault;
  55                         this.properties = properties;
  56                 }
  57
  58                 public override void Close ()
  59                 {
  60                         if (closed)
  61                                 return;
  62
  63                         headers = null;
  64                         body = null;
  65                         closed = true;
  66                 }
  67
  68
  69                 public override Message CreateMessage ()
  70                 {
  71                         if (closed)
  72                                 throw new ObjectDisposedException ("The message buffer has already been closed.");
  73                         Message msg;
  74                         if (body == null)
  75                                 msg = new EmptyMessage (headers.MessageVersion, headers.Action);
  76                         else
  77                                 msg = new SimpleMessage (headers.MessageVersion, headers.Action, body.CreateBufferedCopy (max_buffer_size), is_fault);
  78                         msg.Headers.Clear ();
  79                         msg.Headers.CopyHeadersFrom (headers);
  80                         msg.Properties.CopyProperties (properties);
  81                         return msg;
  82                 }
  83
  84                 public override int BufferSize {
  85                         get { return 0; }
  86                 }
  87         }
  88
  89 #if !NET_2_1
  90         internal class XPathMessageBuffer : MessageBuffer
  91         {
  92                 IXPathNavigable source;
  93                 MessageVersion version;
  94                 int max_header_size;
  95                 MessageProperties properties;
  96
  97                 public XPathMessageBuffer (IXPathNavigable source, MessageVersion version, int maxSizeOfHeaders, MessageProperties properties)
  98                 {
  99                         this.source = source;
 100                         this.version = version;
 101                         this.max_header_size = maxSizeOfHeaders;
 102                         this.properties = properties;
 103                 }
 104
 105                 public override void Close ()
 106                 {
 107                 }
 108
 109                 public override Message CreateMessage ()
 110                 {
 111                         XmlDictionaryReader r = XmlDictionaryReader.CreateDictionaryReader (source.CreateNavigator ().ReadSubtree ());
 112                         Message msg = new XmlReaderMessage (version, r, max_header_size);
 113                         msg.Properties.CopyProperties (properties);
 114                         return msg;
 115                 }
 116
 117                 public override int BufferSize {
 118                         // FIXME: implement
 119                         get { return 0; }
 120                 }
 121         }
 122 #endif
 123 }