mcs/class/System.Runtime.Serialization/System.Runtime.Serialization/XmlFormatterSerializer.cs

   1 //
   2 // XmlFormatterSerializer.cs
   3 //
   4 // Author:
   5 //      Atsushi Enomoto <atsushi@ximian.com>
   6 //
   7 // Copyright (C) 2005 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 #if NET_2_0
  29 using System;
  30 using System.Collections;
  31 using System.IO;
  32 using System.Reflection;
  33 using System.Runtime.Serialization.Formatters.Binary;
  34 using System.Xml;
  35 using System.Xml.Schema;
  36
  37 using QName = System.Xml.XmlQualifiedName;
  38
  39 namespace System.Runtime.Serialization
  40 {
  41         internal class XmlFormatterSerializer
  42         {
  43                 XmlDictionaryWriter writer;
  44                 object graph;
  45                 KnownTypeCollection types;
  46
  47                 bool save_id;
  48                 bool ignore_unknown;
  49                 IDataContractSurrogate surrogate;
  50                 int max_items;
  51
  52                 ArrayList objects = new ArrayList ();
  53                 Hashtable references = new Hashtable (); // preserve possibly referenced objects to ids. (new in 3.5 SP1)
  54
  55                 public static void Serialize (XmlDictionaryWriter writer, object graph,
  56                         KnownTypeCollection types,
  57                         bool ignoreUnknown, int maxItems, string root_ns)
  58                 {
  59                         new XmlFormatterSerializer (writer, types, ignoreUnknown, maxItems, root_ns)
  60                                 .Serialize (graph != null ? graph.GetType () : null, graph);
  61                 }
  62
  63                 public XmlFormatterSerializer (XmlDictionaryWriter writer,
  64                         KnownTypeCollection types,
  65                         bool ignoreUnknown, int maxItems, string root_ns)
  66                 {
  67                         this.writer = writer;
  68                         this.types = types;
  69                         ignore_unknown = ignoreUnknown;
  70                         max_items = maxItems;
  71                 }
  72
  73                 public ArrayList SerializingObjects {
  74                         get { return objects; }
  75                 }
  76
  77                 public IDictionary References {
  78                         get { return references; }
  79                 }
  80
  81                 public XmlDictionaryWriter Writer {
  82                         get { return writer; }
  83                 }
  84
  85                 public void Serialize (Type type, object graph)
  86                 {
  87                         if (graph == null)
  88                                 writer.WriteAttributeString ("nil", XmlSchema.InstanceNamespace, "true");
  89                         else {
  90                                 Type actualType = graph.GetType ();
  91                                 if (actualType != type) {
  92                                         QName qname = types.GetXmlName (actualType);
  93                                         string name = qname.Name;
  94                                         string ns = qname.Namespace;
  95                                         if (qname == QName.Empty) {
  96                                                 name = XmlConvert.EncodeLocalName (actualType.Name);
  97                                                 ns = KnownTypeCollection.DefaultClrNamespaceBase + actualType.Namespace;
  98                                         } else if (qname.Namespace == KnownTypeCollection.MSSimpleNamespace)
  99                                                 ns = XmlSchema.Namespace;
 100                                         if (writer.LookupPrefix (ns) == null) // it goes first (extraneous, but it makes att order compatible)
 101                                                 writer.WriteXmlnsAttribute (null, ns);
 102                                         writer.WriteStartAttribute ("type", XmlSchema.InstanceNamespace);
 103                                         writer.WriteQualifiedName (name, ns);
 104                                         writer.WriteEndAttribute ();
 105                                 }
 106                                 QName predef = KnownTypeCollection.GetPredefinedTypeName (actualType);
 107                                 if (predef != QName.Empty)
 108                                         SerializePrimitive (type, graph, predef);
 109                                 else
 110                                         SerializeNonPrimitive (type, graph);
 111                         }
 112                 }
 113
 114                 public void SerializePrimitive (Type type, object graph, QName qname)
 115                 {
 116 //                      writer.WriteStartAttribute ("type", XmlSchema.InstanceNamespace);
 117 //                      writer.WriteQualifiedName (qname.Name, qname.Namespace);
 118 //                      writer.WriteEndAttribute ();
 119                         writer.WriteString (KnownTypeCollection.PredefinedTypeObjectToString (graph));
 120                 }
 121
 122                 public void WriteStartElement (string rootName, string rootNamespace, string currentNamespace)
 123                 {
 124                         writer.WriteStartElement (rootName, rootNamespace);
 125                         if (!string.IsNullOrEmpty (currentNamespace) && currentNamespace != rootNamespace)
 126                                 writer.WriteXmlnsAttribute (null, currentNamespace);
 127                 }
 128
 129                 public void WriteEndElement ()
 130                 {
 131                         writer.WriteEndElement ();
 132                 }
 133
 134                 public void SerializeNonPrimitive (Type type, object graph)
 135                 {
 136                         Type actualType = graph.GetType ();
 137
 138                         SerializationMap map = types.FindUserMap (actualType);
 139                         if (map == null) {
 140                                 /* Unknown actual type */
 141                                 types.Add (actualType);
 142                                 map = types.FindUserMap (actualType);
 143                         }
 144
 145                         map.Serialize (graph, this);
 146                 }
 147         }
 148 }
 149 #endif