mcs/class/System.XML/System.Xml.Serialization/XmlReflectionImporter.cs

   1 //
   2 // System.Xml.Serialization.XmlReflectionImporter
   3 //
   4 // Author:
   5 //   Tim Coleman (tim@timcoleman.com)
   6 //   Erik LeBel (eriklebel@yahoo.ca)
   7 //   Lluis Sanchez Gual (lluis@ximian.com)
   8 //
   9 // Copyright (C) Tim Coleman, 2002
  10 // (C) 2003 Erik LeBel
  11 //
  12
  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.Globalization;
  36 using System.Reflection;
  37 using System.Xml.Schema;
  38
  39 namespace System.Xml.Serialization {
  40         public class XmlReflectionImporter {
  41
  42                 string initialDefaultNamespace;
  43                 XmlAttributeOverrides attributeOverrides;
  44                 ArrayList includedTypes;
  45                 ReflectionHelper helper = new ReflectionHelper();
  46                 int arrayChoiceCount = 1;
  47                 ArrayList relatedMaps = new ArrayList ();
  48                 bool allowPrivateTypes = false;
  49
  50                 static readonly string errSimple = "Cannot serialize object of type '{0}'. Base " +
  51                         "type '{1}' has simpleContent and can be only extended by adding XmlAttribute " +
  52                         "elements. Please consider changing XmlText member of the base class to string array";
  53
  54                 static readonly string errSimple2 = "Cannot serialize object of type '{0}'. " +
  55                         "Consider changing type of XmlText member '{1}' from '{2}' to string or string array";
  56
  57                 #region Constructors
  58
  59                 public XmlReflectionImporter ()
  60                         : this (null, null)
  61                 {
  62                 }
  63
  64                 public XmlReflectionImporter (string defaultNamespace)
  65                         : this (null, defaultNamespace)
  66                 {
  67                 }
  68
  69                 public XmlReflectionImporter (XmlAttributeOverrides attributeOverrides)
  70                         : this (attributeOverrides, null)
  71                 {
  72                 }
  73
  74                 public XmlReflectionImporter (XmlAttributeOverrides attributeOverrides, string defaultNamespace)
  75                 {
  76                         if (defaultNamespace == null)
  77                                 this.initialDefaultNamespace = String.Empty;
  78                         else
  79                                 this.initialDefaultNamespace = defaultNamespace;
  80
  81                         if (attributeOverrides == null)
  82                                 this.attributeOverrides = new XmlAttributeOverrides();
  83                         else
  84                                 this.attributeOverrides = attributeOverrides;
  85                 }
  86
  87 /*              void Reset ()
  88                 {
  89                         helper = new ReflectionHelper();
  90                         arrayChoiceCount = 1;
  91                 }
  92 */
  93
  94                 internal bool AllowPrivateTypes
  95                 {
  96                         get { return allowPrivateTypes; }
  97                         set { allowPrivateTypes = value; }
  98                 }
  99
 100                 #endregion // Constructors
 101
 102                 #region Methods
 103
 104                 public XmlMembersMapping ImportMembersMapping (string elementName,
 105                         string ns,
 106                         XmlReflectionMember [] members,
 107                         bool hasWrapperElement)
 108                 {
 109 //                      Reset ();       Disabled. See ChangeLog
 110
 111                         XmlMemberMapping[] mapping = new XmlMemberMapping[members.Length];
 112                         for (int n=0; n<members.Length; n++)
 113                         {
 114                                 XmlTypeMapMember mapMem = CreateMapMember (null, members[n], ns);
 115                                 mapping[n] = new XmlMemberMapping (members[n].MemberName, ns, mapMem, false);
 116                         }
 117                         elementName = XmlConvert.EncodeLocalName (elementName);
 118                         XmlMembersMapping mps = new XmlMembersMapping (elementName, ns, hasWrapperElement, false, mapping);
 119                         mps.RelatedMaps = relatedMaps;
 120                         mps.Format = SerializationFormat.Literal;
 121                         Type[] extraTypes = includedTypes != null ? (Type[])includedTypes.ToArray(typeof(Type)) : null;
 122                         mps.Source = new MembersSerializationSource (elementName, hasWrapperElement, members, false, true, ns, extraTypes);
 123                         if (allowPrivateTypes) mps.Source.CanBeGenerated = false;
 124                         return mps;
 125                 }
 126
 127 #if NET_2_0
 128                 [MonoTODO]
 129                 public XmlMembersMapping ImportMembersMapping (string elementName,
 130                         string ns,
 131                         XmlReflectionMember[] members,
 132                         bool hasWrapperElement,
 133                         bool rpc)
 134                 {
 135                         throw new NotImplementedException ();
 136                 }
 137
 138                 [MonoTODO]
 139                 public XmlMembersMapping ImportMembersMapping (string elementName,
 140                         string ns,
 141                         XmlReflectionMember[] members,
 142                         bool hasWrapperElement,
 143                         bool rpc,
 144                         bool openModel)
 145                 {
 146                         throw new NotImplementedException ();
 147                 }
 148 #endif
 149
 150                 public XmlTypeMapping ImportTypeMapping (Type type)
 151                 {
 152                         return ImportTypeMapping (type, null, null);
 153                 }
 154
 155                 public XmlTypeMapping ImportTypeMapping (Type type, string defaultNamespace)
 156                 {
 157                         return ImportTypeMapping (type, null, defaultNamespace);
 158                 }
 159
 160                 public XmlTypeMapping ImportTypeMapping (Type type, XmlRootAttribute group)
 161                 {
 162                         return ImportTypeMapping (type, group, null);
 163                 }
 164
 165                 public XmlTypeMapping ImportTypeMapping (Type type, XmlRootAttribute root, string defaultNamespace)
 166                 {
 167                         if (type == null)
 168                                 throw new ArgumentNullException ("type");
 169
 170                         if (type == typeof (void))
 171                                 throw new NotSupportedException ("The type " + type.FullName + " may not be serialized.");
 172
 173                         return ImportTypeMapping (TypeTranslator.GetTypeData (type), root,
 174                                 defaultNamespace);
 175                 }
 176
 177                 internal XmlTypeMapping ImportTypeMapping (TypeData typeData, string defaultNamespace)
 178                 {
 179                         return ImportTypeMapping (typeData, (XmlRootAttribute) null,
 180                                 defaultNamespace);
 181                 }
 182
 183                 private XmlTypeMapping ImportTypeMapping (TypeData typeData, XmlRootAttribute root, string defaultNamespace)
 184                 {
 185                         if (typeData == null)
 186                                 throw new ArgumentNullException ("typeData");
 187
 188                         if (typeData.Type == null)
 189                                 throw new ArgumentException ("Specified TypeData instance does not have Type set.");
 190
 191                         if (defaultNamespace == null) defaultNamespace = initialDefaultNamespace;
 192                         if (defaultNamespace == null) defaultNamespace = string.Empty;
 193
 194                         try {
 195                                 XmlTypeMapping map;
 196
 197                                 switch (typeData.SchemaType) {
 198                                         case SchemaTypes.Class: map = ImportClassMapping (typeData, root, defaultNamespace); break;
 199                                         case SchemaTypes.Array: map = ImportListMapping (typeData, root, defaultNamespace, null, 0); break;
 200                                         case SchemaTypes.XmlNode: map = ImportXmlNodeMapping (typeData, root, defaultNamespace); break;
 201                                         case SchemaTypes.Primitive: map = ImportPrimitiveMapping (typeData, root, defaultNamespace); break;
 202                                         case SchemaTypes.Enum: map = ImportEnumMapping (typeData, root, defaultNamespace); break;
 203                                         case SchemaTypes.XmlSerializable: map = ImportXmlSerializableMapping (typeData, root, defaultNamespace); break;
 204                                         default: throw new NotSupportedException ("Type " + typeData.Type.FullName + " not supported for XML stialization");
 205                                 }
 206
 207                                 map.RelatedMaps = relatedMaps;
 208                                 map.Format = SerializationFormat.Literal;
 209                                 Type[] extraTypes = includedTypes != null ? (Type[]) includedTypes.ToArray (typeof (Type)) : null;
 210                                 map.Source = new XmlTypeSerializationSource (typeData.Type, root, attributeOverrides, defaultNamespace, extraTypes);
 211                                 if (allowPrivateTypes) map.Source.CanBeGenerated = false;
 212                                 return map;
 213                         } catch (InvalidOperationException ex) {
 214                                 throw new InvalidOperationException (string.Format (CultureInfo.InvariantCulture,
 215                                         "There was an error reflecting type '{0}'.", typeData.Type.FullName), ex);
 216                         }
 217                 }
 218
 219                 XmlTypeMapping CreateTypeMapping (TypeData typeData, XmlRootAttribute root, string defaultXmlType, string defaultNamespace)
 220                 {
 221                         string rootNamespace = defaultNamespace;
 222                         string typeNamespace = null;
 223                         string elementName;
 224                         bool includeInSchema = true;
 225                         XmlAttributes atts = null;
 226                         bool nullable = true;
 227
 228                         if (defaultXmlType == null) defaultXmlType = typeData.XmlType;
 229
 230                         if (!typeData.IsListType)
 231                         {
 232                                 if (attributeOverrides != null)
 233                                         atts = attributeOverrides[typeData.Type];
 234
 235                                 if (atts != null && typeData.SchemaType == SchemaTypes.Primitive)
 236                                         throw new InvalidOperationException ("XmlRoot and XmlType attributes may not be specified for the type " + typeData.FullTypeName);
 237                         }
 238
 239                         if (atts == null)
 240                                 atts = new XmlAttributes (typeData.Type);
 241
 242                         if (atts.XmlRoot != null && root == null)
 243                                 root = atts.XmlRoot;
 244
 245                         if (atts.XmlType != null)
 246                         {
 247                                 if (atts.XmlType.Namespace != null && typeData.SchemaType != SchemaTypes.Enum)
 248                                         typeNamespace = atts.XmlType.Namespace;
 249
 250                                 if (atts.XmlType.TypeName != null && atts.XmlType.TypeName != string.Empty)
 251                                         defaultXmlType = XmlConvert.EncodeLocalName (atts.XmlType.TypeName);
 252
 253                                 includeInSchema = atts.XmlType.IncludeInSchema;
 254                         }
 255
 256                         elementName = defaultXmlType;
 257
 258                         if (root != null)
 259                         {
 260                                 if (root.ElementName.Length != 0)
 261                                         elementName = XmlConvert.EncodeLocalName(root.ElementName);
 262                                 if (root.Namespace != null)
 263                                         rootNamespace = root.Namespace;
 264                                 nullable = root.IsNullable;
 265                         }
 266
 267                         if (rootNamespace == null) rootNamespace = "";
 268                         if (typeNamespace == null) typeNamespace = rootNamespace;
 269
 270                         XmlTypeMapping map;
 271                         switch (typeData.SchemaType) {
 272                                 case SchemaTypes.XmlSerializable:
 273                                         map = new XmlSerializableMapping (elementName, rootNamespace, typeData, defaultXmlType, typeNamespace);
 274                                         break;
 275                                 case SchemaTypes.Primitive:
 276                                         if (!typeData.IsXsdType)
 277                                                 map = new XmlTypeMapping (elementName, rootNamespace,
 278                                                         typeData, defaultXmlType, XmlSerializer.WsdlTypesNamespace);
 279                                         else
 280                                                 map = new XmlTypeMapping (elementName, rootNamespace,
 281                                                         typeData, defaultXmlType, typeNamespace);
 282                                         break;
 283                                 default:
 284                                         map = new XmlTypeMapping (elementName, rootNamespace, typeData, defaultXmlType, typeNamespace);
 285                                         break;
 286                         }
 287
 288                         map.IncludeInSchema = includeInSchema;
 289                         map.IsNullable = nullable;
 290                         relatedMaps.Add (map);
 291
 292                         return map;
 293                 }
 294
 295                 XmlTypeMapping ImportClassMapping (Type type, XmlRootAttribute root, string defaultNamespace)
 296                 {
 297                         TypeData typeData = TypeTranslator.GetTypeData (type);
 298                         return ImportClassMapping (typeData, root, defaultNamespace);
 299                 }
 300
 301                 XmlTypeMapping ImportClassMapping (TypeData typeData, XmlRootAttribute root, string defaultNamespace)
 302                 {
 303                         Type type = typeData.Type;
 304
 305                         XmlTypeMapping map = helper.GetRegisteredClrType (type, GetTypeNamespace (typeData, root, defaultNamespace));
 306                         if (map != null) return map;
 307
 308                         if (!allowPrivateTypes)
 309                                 ReflectionHelper.CheckSerializableType (type, false);
 310
 311                         map = CreateTypeMapping (typeData, root, null, defaultNamespace);
 312                         helper.RegisterClrType (map, type, map.XmlTypeNamespace);
 313                         helper.RegisterSchemaType (map, map.XmlType, map.XmlTypeNamespace);
 314
 315                         // Import members
 316
 317                         ClassMap classMap = new ClassMap ();
 318                         map.ObjectMap = classMap;
 319
 320                         ICollection members = GetReflectionMembers (type);
 321                         foreach (XmlReflectionMember rmember in members)
 322                         {
 323                                 string ns = map.XmlTypeNamespace;
 324                                 if (rmember.XmlAttributes.XmlIgnore) continue;
 325                                 if (rmember.DeclaringType != null && rmember.DeclaringType != type) {
 326                                         XmlTypeMapping bmap = ImportClassMapping (rmember.DeclaringType, root, defaultNamespace);
 327                                         ns = bmap.XmlTypeNamespace;
 328                                 }
 329
 330                                 try {
 331                                         XmlTypeMapMember mem = CreateMapMember (type, rmember, ns);
 332                                         mem.CheckOptionalValueType (type);
 333                                         classMap.AddMember (mem);
 334                                 } catch (InvalidOperationException ex) {
 335                                         throw new InvalidOperationException (string.Format (
 336                                                 CultureInfo.InvariantCulture, "There was an error" +
 337                                                 " reflecting field '{0}'.", rmember.MemberName), ex);
 338                                 }
 339                         }
 340
 341                         // Import extra classes
 342
 343                         if (type == typeof (object) && includedTypes != null)
 344                         {
 345                                 foreach (Type intype in includedTypes)
 346                                         map.DerivedTypes.Add (ImportTypeMapping (intype, defaultNamespace));
 347                         }
 348
 349                         // Register inheritance relations
 350
 351                         if (type.BaseType != null)
 352                         {
 353                                 XmlTypeMapping bmap = ImportClassMapping (type.BaseType, root, defaultNamespace);
 354                                 ClassMap cbmap = bmap.ObjectMap as ClassMap;
 355
 356                                 if (type.BaseType != typeof (object)) {
 357                                         map.BaseMap = bmap;
 358                                         if (!cbmap.HasSimpleContent)
 359                                                 classMap.SetCanBeSimpleType (false);
 360                                 }
 361
 362                                 // At this point, derived classes of this map must be already registered
 363
 364                                 RegisterDerivedMap (bmap, map);
 365
 366                                 if (cbmap.HasSimpleContent && classMap.ElementMembers != null && classMap.ElementMembers.Count != 1)
 367                                         throw new InvalidOperationException (String.Format (errSimple, map.TypeData.TypeName, map.BaseMap.TypeData.TypeName));
 368                         }
 369
 370                         ImportIncludedTypes (type, defaultNamespace);
 371
 372                         if (classMap.XmlTextCollector != null && !classMap.HasSimpleContent)
 373                         {
 374                                 XmlTypeMapMember mem = classMap.XmlTextCollector;
 375                                 if (mem.TypeData.Type != typeof(string) &&
 376                                    mem.TypeData.Type != typeof(string[]) &&
 377                                    mem.TypeData.Type != typeof(object[]) &&
 378                                    mem.TypeData.Type != typeof(XmlNode[]))
 379
 380                                         throw new InvalidOperationException (String.Format (errSimple2, map.TypeData.TypeName, mem.Name, mem.TypeData.TypeName));
 381                         }
 382
 383                         return map;
 384                 }
 385
 386                 void RegisterDerivedMap (XmlTypeMapping map, XmlTypeMapping derivedMap)
 387                 {
 388                         map.DerivedTypes.Add (derivedMap);
 389                         map.DerivedTypes.AddRange (derivedMap.DerivedTypes);
 390
 391                         if (map.BaseMap != null)
 392                                 RegisterDerivedMap (map.BaseMap, derivedMap);
 393                         else {
 394                                 XmlTypeMapping obmap = ImportTypeMapping (typeof(object));
 395                                 if (obmap != map)
 396                                         obmap.DerivedTypes.Add (derivedMap);
 397                         }
 398                 }
 399
 400                 string GetTypeNamespace (TypeData typeData, XmlRootAttribute root, string defaultNamespace)
 401                 {
 402                         string typeNamespace = null;
 403
 404                         XmlAttributes atts = null;
 405                         if (!typeData.IsListType)
 406                         {
 407                                 if (attributeOverrides != null)
 408                                         atts = attributeOverrides[typeData.Type];
 409                         }
 410
 411                         if (atts == null)
 412                                 atts = new XmlAttributes (typeData.Type);
 413
 414                         if (atts.XmlType != null)
 415                         {
 416                                 if (atts.XmlType.Namespace != null && atts.XmlType.Namespace.Length != 0 && typeData.SchemaType != SchemaTypes.Enum)
 417                                         typeNamespace = atts.XmlType.Namespace;
 418                         }
 419
 420                         if (typeNamespace != null && typeNamespace.Length != 0) return typeNamespace;
 421
 422                         if (atts.XmlRoot != null && root == null)
 423                                 root = atts.XmlRoot;
 424
 425                         if (root != null)
 426                         {
 427                                 if (root.Namespace != null && root.Namespace.Length != 0)
 428                                         return root.Namespace;
 429                         }
 430
 431                         if (defaultNamespace == null) return "";
 432                         else return defaultNamespace;
 433                 }
 434
 435                 XmlTypeMapping ImportListMapping (Type type, XmlRootAttribute root, string defaultNamespace, XmlAttributes atts, int nestingLevel)
 436                 {
 437                         TypeData typeData = TypeTranslator.GetTypeData (type);
 438                         return ImportListMapping (typeData, root, defaultNamespace, atts, nestingLevel);
 439                 }
 440
 441                 XmlTypeMapping ImportListMapping (TypeData typeData, XmlRootAttribute root, string defaultNamespace, XmlAttributes atts, int nestingLevel)
 442                 {
 443                         Type type = typeData.Type;
 444                         ListMap obmap = new ListMap ();
 445
 446                         if (!allowPrivateTypes)
 447                                 ReflectionHelper.CheckSerializableType (type, true);
 448
 449                         if (atts == null) atts = new XmlAttributes();
 450                         Type itemType = typeData.ListItemType;
 451
 452                         // warning: byte[][] should not be considered multiarray
 453                         bool isMultiArray = (type.IsArray && (TypeTranslator.GetTypeData(itemType).SchemaType == SchemaTypes.Array) && itemType.IsArray);
 454
 455                         XmlTypeMapElementInfoList list = new XmlTypeMapElementInfoList();
 456
 457                         foreach (XmlArrayItemAttribute att in atts.XmlArrayItems)
 458                         {
 459                                 if (att.NestingLevel != nestingLevel) continue;
 460                                 Type elemType = (att.Type != null) ? att.Type : itemType;
 461                                 XmlTypeMapElementInfo elem = new XmlTypeMapElementInfo (null, TypeTranslator.GetTypeData(elemType, att.DataType));
 462                                 elem.Namespace = att.Namespace != null ? att.Namespace : defaultNamespace;
 463                                 if (elem.Namespace == null) elem.Namespace = "";
 464                                 elem.Form = att.Form;
 465                                 elem.IsNullable = att.IsNullable && CanBeNull (elem.TypeData);
 466                                 elem.NestingLevel = att.NestingLevel;
 467
 468                                 if (isMultiArray) {
 469                                         elem.MappedType = ImportListMapping (elemType, null, elem.Namespace, atts, nestingLevel + 1);
 470                                 } else if (elem.TypeData.IsComplexType) {
 471                                         elem.MappedType = ImportTypeMapping (elemType, null, elem.Namespace);
 472                                 }
 473
 474                                 if (att.ElementName.Length != 0) {
 475                                         elem.ElementName = XmlConvert.EncodeLocalName (att.ElementName);
 476                                 } else if (elem.MappedType != null) {
 477                                         elem.ElementName = elem.MappedType.ElementName;
 478                                 } else {
 479                                         elem.ElementName = TypeTranslator.GetTypeData (elemType).XmlType;
 480                                 }
 481
 482                                 list.Add (elem);
 483                         }
 484
 485                         if (list.Count == 0)
 486                         {
 487                                 XmlTypeMapElementInfo elem = new XmlTypeMapElementInfo (null, TypeTranslator.GetTypeData (itemType));
 488                                 if (isMultiArray)
 489                                         elem.MappedType = ImportListMapping (itemType, null, defaultNamespace, atts, nestingLevel + 1);
 490                                 else if (elem.TypeData.IsComplexType)
 491                                         elem.MappedType = ImportTypeMapping (itemType, null, defaultNamespace);
 492
 493                                 if (elem.MappedType != null) {
 494                                         elem.ElementName = elem.MappedType.XmlType;
 495                                 } else {
 496                                         elem.ElementName = TypeTranslator.GetTypeData (itemType).XmlType;
 497                                 }
 498
 499                                 elem.Namespace = (defaultNamespace != null) ? defaultNamespace : "";
 500                                 elem.IsNullable = CanBeNull (elem.TypeData);
 501                                 list.Add (elem);
 502                         }
 503
 504                         obmap.ItemInfo = list;
 505
 506                         // If there can be different element names (types) in the array, then its name cannot
 507                         // be "ArrayOfXXX" it must be something like ArrayOfChoiceNNN
 508
 509                         string baseName;
 510                         if (list.Count > 1) {
 511                                 baseName = "ArrayOfChoice" + (arrayChoiceCount++);
 512                         } else {
 513                                 XmlTypeMapElementInfo elem = ((XmlTypeMapElementInfo) list[0]);
 514                                 if (elem.MappedType != null) {
 515                                         baseName = TypeTranslator.GetArrayName (elem.MappedType.XmlType);
 516                                 } else {
 517                                         baseName = TypeTranslator.GetArrayName (elem.ElementName);
 518                                 }
 519                         }
 520
 521                         // Avoid name colisions
 522
 523                         int nameCount = 1;
 524                         string name = baseName;
 525
 526                         do {
 527                                 XmlTypeMapping foundMap = helper.GetRegisteredSchemaType (name, defaultNamespace);
 528                                 if (foundMap == null) nameCount = -1;
 529                                 else if (obmap.Equals (foundMap.ObjectMap) && typeData.Type == foundMap.TypeData.Type) return foundMap;
 530                                 else name = baseName + (nameCount++);
 531                         }
 532                         while (nameCount != -1);
 533
 534                         XmlTypeMapping map = CreateTypeMapping (typeData, root, name, defaultNamespace);
 535                         map.ObjectMap = obmap;
 536
 537                         // Register any of the including types as a derived class of object
 538                         XmlIncludeAttribute[] includes = (XmlIncludeAttribute[])type.GetCustomAttributes (typeof (XmlIncludeAttribute), false);
 539
 540                         XmlTypeMapping objectMapping = ImportTypeMapping (typeof(object));
 541                         for (int i = 0; i < includes.Length; i++)
 542                         {
 543                                 Type includedType = includes[i].Type;
 544                                 objectMapping.DerivedTypes.Add(ImportTypeMapping (includedType, null, defaultNamespace));
 545                         }
 546
 547                         // Register this map as a derived class of object
 548
 549                         helper.RegisterSchemaType (map, name, defaultNamespace);
 550                         ImportTypeMapping (typeof(object)).DerivedTypes.Add (map);
 551
 552                         return map;
 553                 }
 554
 555                 XmlTypeMapping ImportXmlNodeMapping (TypeData typeData, XmlRootAttribute root, string defaultNamespace)
 556                 {
 557                         Type type = typeData.Type;
 558                         XmlTypeMapping map = helper.GetRegisteredClrType (type, GetTypeNamespace (typeData, root, defaultNamespace));
 559                         if (map != null) return map;
 560
 561                         map = CreateTypeMapping (typeData, root, null, defaultNamespace);
 562                         helper.RegisterClrType (map, type, map.XmlTypeNamespace);
 563
 564                         if (type.BaseType != null)
 565                         {
 566                                 XmlTypeMapping bmap = ImportTypeMapping (type.BaseType, root, defaultNamespace);
 567                                 if (type.BaseType != typeof (object))
 568                                         map.BaseMap = bmap;
 569
 570                                 RegisterDerivedMap (bmap, map);
 571                         }
 572
 573                         return map;
 574                 }
 575
 576                 XmlTypeMapping ImportPrimitiveMapping (TypeData typeData, XmlRootAttribute root, string defaultNamespace)
 577                 {
 578                         Type type = typeData.Type;
 579                         XmlTypeMapping map = helper.GetRegisteredClrType (type, GetTypeNamespace (typeData, root, defaultNamespace));
 580                         if (map != null) return map;
 581                         map = CreateTypeMapping (typeData, root, null, defaultNamespace);
 582                         helper.RegisterClrType (map, type, map.XmlTypeNamespace);
 583                         return map;
 584                 }
 585
 586                 XmlTypeMapping ImportEnumMapping (TypeData typeData, XmlRootAttribute root, string defaultNamespace)
 587                 {
 588                         Type type = typeData.Type;
 589                         XmlTypeMapping map = helper.GetRegisteredClrType (type, GetTypeNamespace (typeData, root, defaultNamespace));
 590                         if (map != null) return map;
 591
 592                         if (!allowPrivateTypes)
 593                                 ReflectionHelper.CheckSerializableType (type, false);
 594
 595                         map = CreateTypeMapping (typeData, root, null, defaultNamespace);
 596                         map.IsNullable = false;
 597                         helper.RegisterClrType (map, type, map.XmlTypeNamespace);
 598
 599                         string [] names = Enum.GetNames (type);
 600                         ArrayList members = new ArrayList();
 601                         foreach (string name in names)
 602                         {
 603                                 FieldInfo field = type.GetField (name);
 604                                 string xmlName = null;
 605                                 if (field.IsDefined(typeof(XmlIgnoreAttribute), false))
 606                                         continue;
 607                                 object[] atts = field.GetCustomAttributes (typeof(XmlEnumAttribute), false);
 608                                 if (atts.Length > 0) xmlName = ((XmlEnumAttribute)atts[0]).Name;
 609                                 if (xmlName == null) xmlName = name;
 610                                 long value = ((IConvertible) field.GetValue (null)).ToInt64 (CultureInfo.InvariantCulture);
 611                                 members.Add (new EnumMap.EnumMapMember (xmlName, name, value));
 612                         }
 613
 614                         bool isFlags = type.IsDefined (typeof (FlagsAttribute), false);
 615                         map.ObjectMap = new EnumMap ((EnumMap.EnumMapMember[])members.ToArray (typeof(EnumMap.EnumMapMember)), isFlags);
 616                         ImportTypeMapping (typeof(object)).DerivedTypes.Add (map);
 617                         return map;
 618                 }
 619
 620                 XmlTypeMapping ImportXmlSerializableMapping (TypeData typeData, XmlRootAttribute root, string defaultNamespace)
 621                 {
 622                         Type type = typeData.Type;
 623                         XmlTypeMapping map = helper.GetRegisteredClrType (type, GetTypeNamespace (typeData, root, defaultNamespace));
 624                         if (map != null) return map;
 625
 626                         if (!allowPrivateTypes)
 627                                 ReflectionHelper.CheckSerializableType (type, false);
 628
 629                         map = CreateTypeMapping (typeData, root, null, defaultNamespace);
 630                         helper.RegisterClrType (map, type, map.XmlTypeNamespace);
 631                         return map;
 632                 }
 633
 634                 void ImportIncludedTypes (Type type, string defaultNamespace)
 635                 {
 636                         XmlIncludeAttribute[] includes = (XmlIncludeAttribute[])type.GetCustomAttributes (typeof (XmlIncludeAttribute), false);
 637                         for (int n=0; n<includes.Length; n++)
 638                         {
 639                                 Type includedType = includes[n].Type;
 640                                 ImportTypeMapping (includedType, null, defaultNamespace);
 641                         }
 642                 }
 643
 644                 ICollection GetReflectionMembers (Type type)
 645                 {
 646                         // First we want to find the inheritance hierarchy in reverse order.
 647                         Type currentType = type;
 648                         ArrayList typeList = new ArrayList();
 649                         typeList.Add(currentType);
 650                         while (currentType != typeof(object))
 651                         {
 652                                 currentType = currentType.BaseType; // Read the base type.
 653                                 typeList.Insert(0, currentType); // Insert at 0 to reverse the order.
 654                         }
 655
 656                         // Read all Fields via reflection.
 657                         ArrayList fieldList = new ArrayList();
 658                         FieldInfo[] tfields = type.GetFields (BindingFlags.Instance | BindingFlags.Public);
 659 #if TARGET_JVM
 660                         // This statement ensures fields are ordered starting from the base type.
 661                         for (int ti=0; ti<typeList.Count; ti++) {
 662                                 for (int i=0; i<tfields.Length; i++) {
 663                                         FieldInfo field = tfields[i];
 664                                         if (field.DeclaringType == typeList[ti])
 665                                                 fieldList.Add (field);
 666                                 }
 667                         }
 668 #else
 669                         currentType = null;
 670                         int currentIndex = 0;
 671                         foreach (FieldInfo field in tfields)
 672                         {
 673                                 // This statement ensures fields are ordered starting from the base type.
 674                                 if (currentType != field.DeclaringType)
 675                                 {
 676                                         currentType = field.DeclaringType;
 677                                         currentIndex=0;
 678                                 }
 679                                 fieldList.Insert(currentIndex++, field);
 680                         }
 681 #endif
 682                         // Read all Properties via reflection.
 683                         ArrayList propList = new ArrayList();
 684                         PropertyInfo[] tprops = type.GetProperties (BindingFlags.Instance | BindingFlags.Public);
 685 #if TARGET_JVM
 686                         // This statement ensures properties are ordered starting from the base type.
 687                         for (int ti=0; ti<typeList.Count; ti++) {
 688                                 for (int i=0; i<tprops.Length; i++) {
 689                                         PropertyInfo prop = tprops[i];
 690                                         if (!prop.CanRead) continue;
 691                                         if (prop.GetIndexParameters().Length > 0) continue;
 692                                         if (prop.DeclaringType == typeList[ti])
 693                                                 propList.Add (prop);
 694                                 }
 695                         }
 696 #else
 697                         currentType = null;
 698                         currentIndex = 0;
 699                         foreach (PropertyInfo prop in tprops)
 700                         {
 701                                 // This statement ensures properties are ordered starting from the base type.
 702                                 if (currentType != prop.DeclaringType)
 703                                 {
 704                                         currentType = prop.DeclaringType;
 705                                         currentIndex = 0;
 706                                 }
 707                                 if (!prop.CanRead) continue;
 708                                 if (prop.GetIndexParameters().Length > 0) continue;
 709                                 propList.Insert(currentIndex++, prop);
 710                         }
 711 #endif
 712                         ArrayList members = new ArrayList();
 713                         int fieldIndex=0;
 714                         int propIndex=0;
 715                         // We now step through the type hierarchy from the base (object) through
 716                         // to the supplied class, as each step outputting all Fields, and then
 717                         // all Properties.  This is the exact same ordering as .NET 1.0/1.1.
 718                         foreach (Type t in typeList)
 719                         {
 720                                 // Add any fields matching the current DeclaringType.
 721                                 while (fieldIndex < fieldList.Count)
 722                                 {
 723                                         FieldInfo field = (FieldInfo)fieldList[fieldIndex];
 724                                         if (field.DeclaringType==t)
 725                                         {
 726                                                 fieldIndex++;
 727                                                 XmlAttributes atts = attributeOverrides[type, field.Name];
 728                                                 if (atts == null) atts = new XmlAttributes (field);
 729                                                 if (atts.XmlIgnore) continue;
 730                                                 XmlReflectionMember member = new XmlReflectionMember(field.Name, field.FieldType, atts);
 731                                                 member.DeclaringType = field.DeclaringType;
 732                                                 members.Add(member);
 733                                         }
 734                                         else break;
 735                                 }
 736
 737                                 // Add any properties matching the current DeclaringType.
 738                                 while (propIndex < propList.Count)
 739                                 {
 740                                         PropertyInfo prop = (PropertyInfo)propList[propIndex];
 741                                         if (prop.DeclaringType==t)
 742                                         {
 743                                                 propIndex++;
 744                                                 XmlAttributes atts = attributeOverrides[type, prop.Name];
 745                                                 if (atts == null) atts = new XmlAttributes (prop);
 746                                                 if (atts.XmlIgnore) continue;
 747                                                 if (!prop.CanWrite && (TypeTranslator.GetTypeData (prop.PropertyType).SchemaType != SchemaTypes.Array || prop.PropertyType.IsArray)) continue;
 748                                                 XmlReflectionMember member = new XmlReflectionMember(prop.Name, prop.PropertyType, atts);
 749                                                 member.DeclaringType = prop.DeclaringType;
 750                                                 members.Add(member);
 751                                         }
 752                                         else break;
 753                                 }
 754                         }
 755                         return members;
 756                 }
 757
 758                 private XmlTypeMapMember CreateMapMember (Type declaringType, XmlReflectionMember rmember, string defaultNamespace)
 759                 {
 760                         XmlTypeMapMember mapMember;
 761                         XmlAttributes atts = rmember.XmlAttributes;
 762                         TypeData typeData = TypeTranslator.GetTypeData (rmember.MemberType);
 763
 764                         if (atts.XmlAnyAttribute != null)
 765                         {
 766                                 if ( (rmember.MemberType.FullName == "System.Xml.XmlAttribute[]") ||
 767                                          (rmember.MemberType.FullName == "System.Xml.XmlNode[]") )
 768                                 {
 769                                         mapMember = new XmlTypeMapMemberAnyAttribute();
 770                                 }
 771                                 else
 772                                         throw new InvalidOperationException ("XmlAnyAttributeAttribute can only be applied to members of type XmlAttribute[] or XmlNode[]");
 773                         }
 774                         else if (atts.XmlAnyElements != null && atts.XmlAnyElements.Count > 0)
 775                         {
 776                                 if ( (rmember.MemberType.FullName == "System.Xml.XmlElement[]") ||
 777                                          (rmember.MemberType.FullName == "System.Xml.XmlNode[]") ||
 778                                          (rmember.MemberType.FullName == "System.Xml.XmlElement"))
 779                                 {
 780                                         XmlTypeMapMemberAnyElement member = new XmlTypeMapMemberAnyElement();
 781                                         member.ElementInfo = ImportAnyElementInfo (defaultNamespace, rmember, member, atts);
 782                                         mapMember = member;
 783                                 }
 784                                 else
 785                                         throw new InvalidOperationException ("XmlAnyElementAttribute can only be applied to members of type XmlElement, XmlElement[] or XmlNode[]");
 786                         }
 787                         else if (atts.Xmlns)
 788                         {
 789                                 XmlTypeMapMemberNamespaces mapNamespaces = new XmlTypeMapMemberNamespaces ();
 790                                 mapMember = mapNamespaces;
 791                         }
 792                         else if (atts.XmlAttribute != null)
 793                         {
 794                                 // An attribute
 795
 796                                 if (atts.XmlElements != null && atts.XmlElements.Count > 0)
 797                                         throw new Exception ("XmlAttributeAttribute and XmlElementAttribute cannot be applied to the same member");
 798
 799                                 XmlTypeMapMemberAttribute mapAttribute = new XmlTypeMapMemberAttribute ();
 800                                 if (atts.XmlAttribute.AttributeName.Length == 0)
 801                                         mapAttribute.AttributeName = rmember.MemberName;
 802                                 else
 803                                         mapAttribute.AttributeName = atts.XmlAttribute.AttributeName;
 804
 805                                 mapAttribute.AttributeName = XmlConvert.EncodeLocalName (mapAttribute.AttributeName);
 806
 807                                 if (typeData.IsComplexType)
 808                                         mapAttribute.MappedType = ImportTypeMapping (typeData.Type, null, mapAttribute.Namespace);
 809
 810                                 if (atts.XmlAttribute.Namespace != null && atts.XmlAttribute.Namespace != defaultNamespace)
 811                                 {
 812                                         if (atts.XmlAttribute.Form == XmlSchemaForm.Unqualified)
 813                                                 throw new InvalidOperationException ("The Form property may not be 'Unqualified' when an explicit Namespace property is present");
 814                                         mapAttribute.Form = XmlSchemaForm.Qualified;
 815                                         mapAttribute.Namespace = atts.XmlAttribute.Namespace;
 816                                 }
 817                                 else
 818                                 {
 819                                         mapAttribute.Form = atts.XmlAttribute.Form;
 820                                         if (atts.XmlAttribute.Form == XmlSchemaForm.Qualified)
 821                                                 mapAttribute.Namespace = defaultNamespace;
 822                                         else
 823                                                 mapAttribute.Namespace = "";
 824                                 }
 825
 826                                 typeData = TypeTranslator.GetTypeData(rmember.MemberType, atts.XmlAttribute.DataType);
 827                                 mapMember = mapAttribute;
 828                         }
 829                         else if (typeData.SchemaType == SchemaTypes.Array)
 830                         {
 831                                 // If the member has a single XmlElementAttribute and the type is the type of the member,
 832                                 // then it is not a flat list
 833
 834                                 if (atts.XmlElements.Count > 1 ||
 835                                    (atts.XmlElements.Count == 1 && atts.XmlElements[0].Type != typeData.Type) ||
 836                                    (atts.XmlText != null))
 837                                 {
 838                                         // A flat list
 839
 840                                         // TODO: check that it does not have XmlArrayAttribute
 841                                         XmlTypeMapMemberFlatList member = new XmlTypeMapMemberFlatList ();
 842                                         member.ListMap = new ListMap ();
 843                                         member.ListMap.ItemInfo = ImportElementInfo (declaringType, XmlConvert.EncodeLocalName (rmember.MemberName), defaultNamespace, typeData.ListItemType, member, atts);
 844                                         member.ElementInfo = member.ListMap.ItemInfo;
 845                                         member.ListMap.ChoiceMember = member.ChoiceMember;
 846                                         mapMember = member;
 847                                 }
 848                                 else
 849                                 {
 850                                         // A list
 851
 852                                         XmlTypeMapMemberList member = new XmlTypeMapMemberList ();
 853
 854                                         // Creates an ElementInfo that identifies the array instance.
 855                                         member.ElementInfo = new XmlTypeMapElementInfoList();
 856                                         XmlTypeMapElementInfo elem = new XmlTypeMapElementInfo (member, typeData);
 857                                         elem.ElementName = XmlConvert.EncodeLocalName((atts.XmlArray != null && atts.XmlArray.ElementName.Length != 0) ? atts.XmlArray.ElementName : rmember.MemberName);
 858                                         elem.Namespace = (atts.XmlArray != null && atts.XmlArray.Namespace != null) ? atts.XmlArray.Namespace : defaultNamespace;
 859                                         elem.MappedType = ImportListMapping (rmember.MemberType, null, elem.Namespace, atts, 0);
 860                                         elem.IsNullable = (atts.XmlArray != null) ? atts.XmlArray.IsNullable : false;
 861                                         elem.Form = (atts.XmlArray != null) ? atts.XmlArray.Form : XmlSchemaForm.Qualified;
 862
 863                                         member.ElementInfo.Add (elem);
 864                                         mapMember = member;
 865                                 }
 866                         }
 867                         else
 868                         {
 869                                 // An element
 870
 871                                 XmlTypeMapMemberElement member = new XmlTypeMapMemberElement ();
 872                                 member.ElementInfo = ImportElementInfo (declaringType, XmlConvert.EncodeLocalName(rmember.MemberName), defaultNamespace, rmember.MemberType, member, atts);
 873                                 mapMember = member;
 874                         }
 875
 876                         mapMember.DefaultValue = atts.XmlDefaultValue;
 877                         mapMember.TypeData = typeData;
 878                         mapMember.Name = rmember.MemberName;
 879                         mapMember.IsReturnValue = rmember.IsReturnValue;
 880                         return mapMember;
 881                 }
 882
 883                 XmlTypeMapElementInfoList ImportElementInfo (Type cls, string defaultName, string defaultNamespace, Type defaultType, XmlTypeMapMemberElement member, XmlAttributes atts)
 884                 {
 885                         EnumMap choiceEnumMap = null;
 886                         Type choiceEnumType = null;
 887
 888                         XmlTypeMapElementInfoList list = new XmlTypeMapElementInfoList();
 889                         ImportTextElementInfo (list, defaultType, member, atts);
 890
 891                         if (atts.XmlChoiceIdentifier != null) {
 892                                 if (cls == null)
 893                                         throw new InvalidOperationException ("XmlChoiceIdentifierAttribute not supported in this context.");
 894
 895                                 member.ChoiceMember = atts.XmlChoiceIdentifier.MemberName;
 896                                 MemberInfo[] mems = cls.GetMember (member.ChoiceMember, BindingFlags.Instance|BindingFlags.Public);
 897
 898                                 if (mems.Length == 0)
 899                                         throw new InvalidOperationException ("Choice member '" + member.ChoiceMember + "' not found in class '" + cls);
 900
 901                                 if (mems[0] is PropertyInfo) {
 902                                         PropertyInfo pi = (PropertyInfo)mems[0];
 903                                         if (!pi.CanWrite || !pi.CanRead)
 904                                                 throw new InvalidOperationException ("Choice property '" + member.ChoiceMember + "' must be read/write.");
 905                                         choiceEnumType = pi.PropertyType;
 906                                 }
 907                                 else choiceEnumType = ((FieldInfo)mems[0]).FieldType;
 908
 909                                 member.ChoiceTypeData = TypeTranslator.GetTypeData (choiceEnumType);
 910
 911                                 if (choiceEnumType.IsArray)
 912                                         choiceEnumType = choiceEnumType.GetElementType ();
 913
 914                                 choiceEnumMap = ImportTypeMapping (choiceEnumType).ObjectMap as EnumMap;
 915                                 if (choiceEnumMap == null)
 916                                         throw new InvalidOperationException ("The member '" + mems[0].Name + "' is not a valid target for XmlChoiceIdentifierAttribute.");
 917                         }
 918
 919                         if (atts.XmlElements.Count == 0 && list.Count == 0)
 920                         {
 921                                 XmlTypeMapElementInfo elem = new XmlTypeMapElementInfo (member, TypeTranslator.GetTypeData(defaultType));
 922                                 elem.ElementName = defaultName;
 923                                 elem.Namespace = defaultNamespace;
 924                                 if (elem.TypeData.IsComplexType)
 925                                         elem.MappedType = ImportTypeMapping (defaultType, null, defaultNamespace);
 926                                 list.Add (elem);
 927                         }
 928
 929                         bool multiType = (atts.XmlElements.Count > 1);
 930                         foreach (XmlElementAttribute att in atts.XmlElements)
 931                         {
 932                                 Type elemType = (att.Type != null) ? att.Type : defaultType;
 933                                 XmlTypeMapElementInfo elem = new XmlTypeMapElementInfo (member, TypeTranslator.GetTypeData(elemType, att.DataType));
 934                                 elem.Form = att.Form;
 935                                 if (elem.Form != XmlSchemaForm.Unqualified)
 936                                         elem.Namespace = (att.Namespace != null) ? att.Namespace : defaultNamespace;
 937                                 elem.IsNullable = att.IsNullable;
 938
 939                                 if (elem.IsNullable && elem.TypeData.IsValueType)
 940                                         throw new InvalidOperationException ("IsNullable may not be 'true' for value type " + elem.TypeData.FullTypeName + " in member '" + defaultName + "'");
 941
 942                                 if (elem.TypeData.IsComplexType)
 943                                 {
 944                                         if (att.DataType.Length != 0) throw new InvalidOperationException (
 945                                                 string.Format(CultureInfo.InvariantCulture, "'{0}' is "
 946                                                         + "an invalid value for '{1}.{2}' of type '{3}'. "
 947                                                         + "The property may only be specified for primitive types.",
 948                                                         att.DataType, cls.FullName, defaultName,
 949                                                         elem.TypeData.FullTypeName));
 950                                         elem.MappedType = ImportTypeMapping (elemType, null, elem.Namespace);
 951                                 }
 952
 953                                 if (att.ElementName.Length != 0)  {
 954                                         elem.ElementName = XmlConvert.EncodeLocalName(att.ElementName);
 955                                 } else if (multiType) {
 956                                         if (elem.MappedType != null) {
 957                                                 elem.ElementName = elem.MappedType.ElementName;
 958                                         } else {
 959                                                 elem.ElementName = TypeTranslator.GetTypeData (elemType).XmlType;
 960                                         }
 961                                 } else {
 962                                         elem.ElementName = defaultName;
 963                                 }
 964
 965                                 if (choiceEnumMap != null) {
 966                                         string cname = choiceEnumMap.GetEnumName (choiceEnumType.FullName, elem.ElementName);
 967                                         if (cname == null)
 968                                                 throw new InvalidOperationException (string.Format (
 969                                                         CultureInfo.InvariantCulture, "Type {0} is missing"
 970                                                         + " enumeration value '{1}' for element '{1} from"
 971                                                         + " namespace '{2}'.", choiceEnumType, elem.ElementName,
 972                                                         elem.Namespace));
 973                                         elem.ChoiceValue = Enum.Parse (choiceEnumType, cname);
 974                                 }
 975
 976                                 list.Add (elem);
 977                         }
 978                         return list;
 979                 }
 980
 981                 XmlTypeMapElementInfoList ImportAnyElementInfo (string defaultNamespace, XmlReflectionMember rmember, XmlTypeMapMemberElement member, XmlAttributes atts)
 982                 {
 983                         XmlTypeMapElementInfoList list = new XmlTypeMapElementInfoList();
 984
 985                         ImportTextElementInfo (list, rmember.MemberType, member, atts);
 986
 987                         foreach (XmlAnyElementAttribute att in atts.XmlAnyElements)
 988                         {
 989                                 XmlTypeMapElementInfo elem = new XmlTypeMapElementInfo (member, TypeTranslator.GetTypeData(typeof(XmlElement)));
 990                                 if (att.Name.Length != 0)
 991                                 {
 992                                         elem.ElementName = XmlConvert.EncodeLocalName(att.Name);
 993                                         elem.Namespace = (att.Namespace != null) ? att.Namespace : "";
 994                                 }
 995                                 else
 996                                 {
 997                                         elem.IsUnnamedAnyElement = true;
 998                                         elem.Namespace = defaultNamespace;
 999                                         if (att.Namespace != null)
1000                                                 throw new InvalidOperationException ("The element " + rmember.MemberName + " has been attributed with an XmlAnyElementAttribute and a namespace '" + att.Namespace + "', but no name. When a namespace is supplied, a name is also required. Supply a name or remove the namespace.");
1001                                 }
1002                                 list.Add (elem);
1003                         }
1004                         return list;
1005                 }
1006
1007                 void ImportTextElementInfo (XmlTypeMapElementInfoList list, Type defaultType, XmlTypeMapMemberElement member, XmlAttributes atts)
1008                 {
1009                         if (atts.XmlText != null)
1010                         {
1011                                 member.IsXmlTextCollector = true;
1012                                 if (atts.XmlText.Type != null) {
1013                                         TypeData td = TypeTranslator.GetTypeData (defaultType);
1014                                         if ((td.SchemaType == SchemaTypes.Primitive || td.SchemaType == SchemaTypes.Enum) && atts.XmlText.Type != defaultType) {
1015                                                 throw new InvalidOperationException ("The type for XmlText may not be specified for primitive types.");
1016                                         }
1017                                         defaultType = atts.XmlText.Type;
1018                                 }
1019                                 if (defaultType == typeof(XmlNode)) defaultType = typeof(XmlText);      // Nodes must be text nodes
1020
1021                                 XmlTypeMapElementInfo elem = new XmlTypeMapElementInfo (member, TypeTranslator.GetTypeData(defaultType, atts.XmlText.DataType));
1022
1023                                 if (elem.TypeData.SchemaType != SchemaTypes.Primitive &&
1024                                         elem.TypeData.SchemaType != SchemaTypes.Enum &&
1025                                     elem.TypeData.SchemaType != SchemaTypes.XmlNode &&
1026                                     !(elem.TypeData.SchemaType == SchemaTypes.Array && elem.TypeData.ListItemTypeData.SchemaType == SchemaTypes.XmlNode)
1027                                  )
1028                                         throw new InvalidOperationException ("XmlText cannot be used to encode complex types");
1029
1030                                 elem.IsTextElement = true;
1031                                 elem.WrappedElement = false;
1032                                 list.Add (elem);
1033                         }
1034                 }
1035
1036                 bool CanBeNull (TypeData type)
1037                 {
1038                         return (type.SchemaType != SchemaTypes.Primitive || type.Type == typeof (string));
1039                 }
1040
1041                 public void IncludeType (Type type)
1042                 {
1043                         if (type == null)
1044                                 throw new ArgumentNullException ("type");
1045
1046                         if (includedTypes == null) includedTypes = new ArrayList ();
1047                         if (!includedTypes.Contains (type))
1048                                 includedTypes.Add (type);
1049
1050                         if (relatedMaps.Count > 0) {
1051                                 foreach (XmlTypeMapping map in (ArrayList) relatedMaps.Clone ()) {
1052                                         if (map.TypeData.Type == typeof(object))
1053                                                 map.DerivedTypes.Add (ImportTypeMapping (type));
1054                                 }
1055                         }
1056                 }
1057
1058                 public void IncludeTypes (ICustomAttributeProvider provider)
1059                 {
1060                         object[] ats = provider.GetCustomAttributes (typeof(XmlIncludeAttribute), true);
1061
1062                         foreach (XmlIncludeAttribute at in ats)
1063                                 IncludeType (at.Type);
1064                 }
1065
1066                 #endregion // Methods
1067         }
1068 }