mcs/class/referencesource/System.Xml/System/Xml/Schema/XmlSchema.cs

   1 //------------------------------------------------------------------------------
   2 // <copyright file="XmlSchema.cs" company="Microsoft">
   3 //     Copyright (c) Microsoft Corporation.  All rights reserved.
   4 // </copyright>
   5 // <owner current="true" primary="true">Microsoft</owner>
   6 //------------------------------------------------------------------------------
   7
   8 namespace System.Xml.Schema {
   9 #if SILVERLIGHT
  10     public class XmlSchema : XmlSchemaObject
  11     {
  12         //Empty XmlSchema class to enable backward compatibility of interface method IXmlSerializable.GetSchema()
  13         //Add private ctor to prevent constructing of this class
  14         XmlSchema() { }
  15     }
  16 #else
  17     using System.IO;
  18     using System.Collections;
  19     using System.ComponentModel;
  20     using System.Xml.Serialization;
  21     using System.Threading;
  22     using System.Diagnostics;
  23
  24     /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema"]/*' />
  25     /// <devdoc>
  26     ///    <para>[To be supplied.]</para>
  27     /// </devdoc>
  28     [XmlRoot("schema", Namespace=XmlSchema.Namespace)]
  29     public class XmlSchema : XmlSchemaObject {
  30
  31         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Namespace"]/*' />
  32         /// <devdoc>
  33         ///    <para>[To be supplied.]</para>
  34         /// </devdoc>
  35         public const string Namespace = XmlReservedNs.NsXs;
  36         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.InstanceNamespace"]/*' />
  37         /// <devdoc>
  38         ///    <para>[To be supplied.]</para>
  39         /// </devdoc>
  40         public const string InstanceNamespace = XmlReservedNs.NsXsi;
  41
  42         XmlSchemaForm attributeFormDefault = XmlSchemaForm.None;
  43         XmlSchemaForm elementFormDefault = XmlSchemaForm.None;
  44         XmlSchemaDerivationMethod blockDefault = XmlSchemaDerivationMethod.None;
  45         XmlSchemaDerivationMethod finalDefault = XmlSchemaDerivationMethod.None;
  46         string targetNs;
  47         string version;
  48         XmlSchemaObjectCollection includes = new XmlSchemaObjectCollection();
  49         XmlSchemaObjectCollection items = new XmlSchemaObjectCollection();
  50         string id;
  51         XmlAttribute[] moreAttributes;
  52
  53         // compiled info
  54         bool isCompiled = false;
  55         bool isCompiledBySet = false;
  56         bool isPreprocessed = false;
  57         bool isRedefined = false;
  58         int errorCount = 0;
  59         XmlSchemaObjectTable attributes;
  60         XmlSchemaObjectTable attributeGroups = new XmlSchemaObjectTable();
  61         XmlSchemaObjectTable elements = new XmlSchemaObjectTable();
  62         XmlSchemaObjectTable types = new XmlSchemaObjectTable();
  63         XmlSchemaObjectTable groups = new XmlSchemaObjectTable();
  64         XmlSchemaObjectTable notations = new XmlSchemaObjectTable();
  65         XmlSchemaObjectTable identityConstraints = new XmlSchemaObjectTable();
  66
  67         static int globalIdCounter = -1;
  68         ArrayList importedSchemas;
  69         ArrayList importedNamespaces;
  70
  71         int schemaId = -1; //Not added to a set
  72         Uri baseUri;
  73         bool    isChameleon;
  74         Hashtable ids = new Hashtable();
  75         XmlDocument document;
  76         XmlNameTable nameTable;
  77
  78         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.XmlSchema"]/*' />
  79         /// <devdoc>
  80         ///    <para>[To be supplied.]</para>
  81         /// </devdoc>
  82         public XmlSchema() {}
  83
  84         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Read"]/*' />
  85         /// <devdoc>
  86         ///    <para>[To be supplied.]</para>
  87         /// </devdoc>
  88         public static XmlSchema Read(TextReader reader, ValidationEventHandler validationEventHandler) {
  89             return Read(new XmlTextReader(reader), validationEventHandler);
  90         }
  91
  92         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Read1"]/*' />
  93         /// <devdoc>
  94         ///    <para>[To be supplied.]</para>
  95         /// </devdoc>
  96         public static XmlSchema Read(Stream stream, ValidationEventHandler validationEventHandler) {
  97             return Read(new XmlTextReader(stream), validationEventHandler);
  98         }
  99
 100         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Read2"]/*' />
 101         /// <devdoc>
 102         ///    <para>[To be supplied.]</para>
 103         /// </devdoc>
 104         public static XmlSchema Read(XmlReader reader, ValidationEventHandler validationEventHandler) {
 105             XmlNameTable nameTable = reader.NameTable;
 106             Parser parser = new Parser(SchemaType.XSD, nameTable, new SchemaNames(nameTable), validationEventHandler);
 107             try {
 108                 parser.Parse(reader, null);
 109             }
 110             catch(XmlSchemaException e) {
 111                 if (validationEventHandler != null) {
 112                     validationEventHandler(null, new ValidationEventArgs(e));
 113                 }
 114                 else {
 115                     throw e;
 116                 }
 117                 return null;
 118             }
 119             return parser.XmlSchema;
 120         }
 121
 122         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Write"]/*' />
 123         /// <devdoc>
 124         ///    <para>[To be supplied.]</para>
 125         /// </devdoc>
 126         public void Write(Stream stream) {
 127             Write(stream, null);
 128         }
 129
 130         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Write1"]/*' />
 131         /// <devdoc>
 132         ///    <para>[To be supplied.]</para>
 133         /// </devdoc>
 134         public void Write(Stream stream, XmlNamespaceManager namespaceManager) {
 135             XmlTextWriter xmlWriter = new XmlTextWriter(stream, null);
 136             xmlWriter.Formatting = Formatting.Indented;
 137             Write(xmlWriter, namespaceManager);
 138         }
 139
 140         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Write2"]/*' />
 141         /// <devdoc>
 142         ///    <para>[To be supplied.]</para>
 143         /// </devdoc>
 144         public void Write(TextWriter writer) {
 145             Write(writer, null);
 146         }
 147
 148         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Write3"]/*' />
 149         /// <devdoc>
 150         ///    <para>[To be supplied.]</para>
 151         /// </devdoc>
 152         public void Write(TextWriter writer, XmlNamespaceManager namespaceManager) {
 153             XmlTextWriter xmlWriter = new XmlTextWriter(writer);
 154             xmlWriter.Formatting = Formatting.Indented;
 155             Write(xmlWriter, namespaceManager);
 156         }
 157
 158         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Write4"]/*' />
 159         /// <devdoc>
 160         ///    <para>[To be supplied.]</para>
 161         /// </devdoc>
 162         public void Write(XmlWriter writer) {
 163             Write(writer, null);
 164         }
 165
 166         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Write5"]/*' />
 167         /// <devdoc>
 168         ///    <para>[To be supplied.]</para>
 169         /// </devdoc>
 170         public void Write(XmlWriter writer, XmlNamespaceManager namespaceManager) {
 171             XmlSerializer serializer = new XmlSerializer(typeof(XmlSchema));
 172             XmlSerializerNamespaces ns;
 173
 174             if (namespaceManager != null) {
 175                 ns = new XmlSerializerNamespaces();
 176                 bool ignoreXS = false;
 177                 if (this.Namespaces != null) { //User may have set both nsManager and Namespaces property on the XmlSchema object
 178                     ignoreXS = this.Namespaces.Namespaces["xs"] != null || this.Namespaces.Namespaces.ContainsValue(XmlReservedNs.NsXs);
 179
 180                 }
 181                 if (!ignoreXS && namespaceManager.LookupPrefix(XmlReservedNs.NsXs) == null &&
 182                     namespaceManager.LookupNamespace("xs") == null ) {
 183                         ns.Add("xs", XmlReservedNs.NsXs);
 184                 }
 185                 foreach(string prefix in namespaceManager) {
 186                     if (prefix != "xml" && prefix != "xmlns") {
 187                         ns.Add(prefix, namespaceManager.LookupNamespace(prefix));
 188                     }
 189                 }
 190
 191             } else if (this.Namespaces != null && this.Namespaces.Count > 0) {
 192                 Hashtable serializerNS = this.Namespaces.Namespaces;
 193                 if (serializerNS["xs"] == null && !serializerNS.ContainsValue(XmlReservedNs.NsXs)) { //Prefix xs not defined AND schema namespace not already mapped to a prefix
 194                     serializerNS.Add("xs", XmlReservedNs.NsXs);
 195                 }
 196                 ns = this.Namespaces;
 197             }
 198             else {
 199                 ns = new XmlSerializerNamespaces();
 200                 ns.Add("xs", XmlSchema.Namespace);
 201                 if (targetNs != null && targetNs.Length != 0) {
 202                     ns.Add("tns", targetNs);
 203                 }
 204             }
 205             serializer.Serialize(writer, this, ns);
 206         }
 207
 208         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Compile"]/*' />
 209         /// <devdoc>
 210         ///    <para>[To be supplied.]</para>
 211         /// </devdoc>
 212         [Obsolete("Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation. http://go.microsoft.com/fwlink/?linkid=14202")]
 213         public void Compile(ValidationEventHandler validationEventHandler) {
 214             SchemaInfo sInfo = new SchemaInfo();
 215             sInfo.SchemaType = SchemaType.XSD;
 216             CompileSchema(null, System.Xml.XmlConfiguration.XmlReaderSection.CreateDefaultResolver(), sInfo, null, validationEventHandler, NameTable, false);
 217         }
 218
 219        /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Compileq"]/*' />
 220         /// <devdoc>
 221         ///    <para>[To be supplied.]</para>
 222         /// </devdoc>
 223         [Obsolete("Use System.Xml.Schema.XmlSchemaSet for schema compilation and validation. http://go.microsoft.com/fwlink/?linkid=14202")]
 224         public void Compile(ValidationEventHandler validationEventHandler, XmlResolver resolver) {
 225             SchemaInfo sInfo = new SchemaInfo();
 226             sInfo.SchemaType = SchemaType.XSD;
 227             CompileSchema(null, resolver, sInfo, null, validationEventHandler, NameTable, false);
 228         }
 229
 230 #pragma warning disable 618
 231         internal bool CompileSchema(XmlSchemaCollection xsc, XmlResolver resolver, SchemaInfo schemaInfo, string ns, ValidationEventHandler validationEventHandler, XmlNameTable nameTable, bool CompileContentModel) {
 232
 233             //Need to lock here to prevent multi-threading problems when same schema is added to set and compiled
 234             lock (this) {
 235                 //Preprocessing
 236                 SchemaCollectionPreprocessor prep = new SchemaCollectionPreprocessor(nameTable, null, validationEventHandler);
 237                 prep.XmlResolver = resolver;
 238                 if (!prep.Execute(this, ns, true, xsc)) {
 239                     return false;
 240                 }
 241
 242                 //Compilation
 243                 SchemaCollectionCompiler compiler = new SchemaCollectionCompiler(nameTable, validationEventHandler);
 244                 isCompiled = compiler.Execute(this, schemaInfo, CompileContentModel);
 245                 this.SetIsCompiled(isCompiled);
 246                 //
 247                 return isCompiled;
 248             }
 249         }
 250 #pragma warning restore 618
 251
 252         internal void CompileSchemaInSet(XmlNameTable nameTable, ValidationEventHandler eventHandler, XmlSchemaCompilationSettings compilationSettings) {
 253             Debug.Assert(this.isPreprocessed);
 254             Compiler setCompiler = new Compiler(nameTable, eventHandler, null, compilationSettings);
 255             setCompiler.Prepare(this, true);
 256             this.isCompiledBySet = setCompiler.Compile();
 257         }
 258
 259         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.AttributeFormDefault"]/*' />
 260         /// <devdoc>
 261         ///    <para>[To be supplied.]</para>
 262         /// </devdoc>
 263         [XmlAttribute("attributeFormDefault"), DefaultValue(XmlSchemaForm.None)]
 264         public XmlSchemaForm AttributeFormDefault {
 265              get { return attributeFormDefault; }
 266              set { attributeFormDefault = value; }
 267         }
 268
 269         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.BlockDefault"]/*' />
 270         /// <devdoc>
 271         ///    <para>[To be supplied.]</para>
 272         /// </devdoc>
 273         [XmlAttribute("blockDefault"), DefaultValue(XmlSchemaDerivationMethod.None)]
 274         public XmlSchemaDerivationMethod BlockDefault {
 275              get { return blockDefault; }
 276              set { blockDefault = value; }
 277         }
 278
 279         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.FinalDefault"]/*' />
 280         /// <devdoc>
 281         ///    <para>[To be supplied.]</para>
 282         /// </devdoc>
 283         [XmlAttribute("finalDefault"), DefaultValue(XmlSchemaDerivationMethod.None)]
 284         public XmlSchemaDerivationMethod FinalDefault {
 285              get { return finalDefault; }
 286              set { finalDefault = value; }
 287         }
 288
 289         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.ElementFormDefault"]/*' />
 290         /// <devdoc>
 291         ///    <para>[To be supplied.]</para>
 292         /// </devdoc>
 293         [XmlAttribute("elementFormDefault"), DefaultValue(XmlSchemaForm.None)]
 294         public XmlSchemaForm ElementFormDefault {
 295              get { return elementFormDefault; }
 296              set { elementFormDefault = value; }
 297         }
 298
 299         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.TargetNamespace"]/*' />
 300         /// <devdoc>
 301         ///    <para>[To be supplied.]</para>
 302         /// </devdoc>
 303         [XmlAttribute("targetNamespace", DataType="anyURI")]
 304         public string TargetNamespace {
 305              get { return targetNs; }
 306              set { targetNs = value; }
 307         }
 308
 309         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Version"]/*' />
 310         /// <devdoc>
 311         ///    <para>[To be supplied.]</para>
 312         /// </devdoc>
 313         [XmlAttribute("version", DataType="token")]
 314         public string Version {
 315              get { return version; }
 316              set { version = value; }
 317         }
 318
 319         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Includes"]/*' />
 320         /// <devdoc>
 321         ///    <para>[To be supplied.]</para>
 322         /// </devdoc>
 323         [XmlElement("include", typeof(XmlSchemaInclude)),
 324          XmlElement("import", typeof(XmlSchemaImport)),
 325          XmlElement("redefine", typeof(XmlSchemaRedefine))]
 326         public XmlSchemaObjectCollection Includes {
 327             get { return includes; }
 328         }
 329
 330         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Items"]/*' />
 331         /// <devdoc>
 332         ///    <para>[To be supplied.]</para>
 333         /// </devdoc>
 334         [XmlElement("annotation", typeof(XmlSchemaAnnotation)),
 335          XmlElement("attribute", typeof(XmlSchemaAttribute)),
 336          XmlElement("attributeGroup", typeof(XmlSchemaAttributeGroup)),
 337          XmlElement("complexType", typeof(XmlSchemaComplexType)),
 338          XmlElement("simpleType", typeof(XmlSchemaSimpleType)),
 339          XmlElement("element", typeof(XmlSchemaElement)),
 340          XmlElement("group", typeof(XmlSchemaGroup)),
 341          XmlElement("notation", typeof(XmlSchemaNotation))]
 342         public XmlSchemaObjectCollection Items {
 343             get { return items; }
 344         }
 345
 346         // Compiled info
 347         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.IsCompiled"]/*' />
 348         /// <devdoc>
 349         ///    <para>[To be supplied.]</para>
 350         /// </devdoc>
 351         [XmlIgnore]
 352         public bool IsCompiled {
 353             get {
 354                 return isCompiled || isCompiledBySet ;
 355             }
 356         }
 357
 358         [XmlIgnore]
 359         internal bool IsCompiledBySet {
 360             get { return isCompiledBySet; }
 361             set { isCompiledBySet = value; }
 362         }
 363
 364         [XmlIgnore]
 365         internal bool IsPreprocessed {
 366             get { return isPreprocessed; }
 367             set { isPreprocessed = value; }
 368         }
 369
 370         [XmlIgnore]
 371         internal bool IsRedefined {
 372             get { return isRedefined; }
 373             set { isRedefined = value; }
 374         }
 375
 376         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Attributes"]/*' />
 377         /// <devdoc>
 378         ///    <para>[To be supplied.]</para>
 379         /// </devdoc>
 380         [XmlIgnore]
 381         public XmlSchemaObjectTable Attributes {
 382             get {
 383                 if (attributes == null) {
 384                     attributes = new XmlSchemaObjectTable();
 385                 }
 386                 return attributes;
 387             }
 388         }
 389
 390         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.AttributeGroups"]/*' />
 391         /// <devdoc>
 392         ///    <para>[To be supplied.]</para>
 393         /// </devdoc>
 394         [XmlIgnore]
 395         public XmlSchemaObjectTable AttributeGroups {
 396             get {
 397                 if (attributeGroups == null) {
 398                     attributeGroups = new XmlSchemaObjectTable();
 399                 }
 400                 return attributeGroups;
 401             }
 402         }
 403
 404         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.SchemaTypes"]/*' />
 405         /// <devdoc>
 406         ///    <para>[To be supplied.]</para>
 407         /// </devdoc>
 408         [XmlIgnore]
 409         public XmlSchemaObjectTable SchemaTypes {
 410             get {
 411                 if (types == null) {
 412                     types = new XmlSchemaObjectTable();
 413                 }
 414                 return types;
 415             }
 416         }
 417
 418         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Elements"]/*' />
 419         /// <devdoc>
 420         ///    <para>[To be supplied.]</para>
 421         /// </devdoc>
 422         [XmlIgnore]
 423         public XmlSchemaObjectTable Elements {
 424             get {
 425                 if (elements == null) {
 426                     elements = new XmlSchemaObjectTable();
 427                 }
 428                 return elements;
 429             }
 430         }
 431
 432         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Id"]/*' />
 433         /// <devdoc>
 434         ///    <para>[To be supplied.]</para>
 435         /// </devdoc>
 436         [XmlAttribute("id", DataType="ID")]
 437         public string Id {
 438             get { return id; }
 439             set { id = value; }
 440         }
 441
 442         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.UnhandledAttributes"]/*' />
 443         /// <devdoc>
 444         ///    <para>[To be supplied.]</para>
 445         /// </devdoc>
 446         [XmlAnyAttribute]
 447         public XmlAttribute[] UnhandledAttributes {
 448             get { return moreAttributes; }
 449             set { moreAttributes = value; }
 450         }
 451
 452         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Groups"]/*' />
 453         /// <devdoc>
 454         ///    <para>[To be supplied.]</para>
 455         /// </devdoc>
 456         [XmlIgnore]
 457         public XmlSchemaObjectTable Groups {
 458             get { return groups; }
 459         }
 460
 461         /// <include file='doc\XmlSchema.uex' path='docs/doc[@for="XmlSchema.Notations"]/*' />
 462         /// <devdoc>
 463         ///    <para>[To be supplied.]</para>
 464         /// </devdoc>
 465         [XmlIgnore]
 466         public XmlSchemaObjectTable Notations {
 467             get { return notations; }
 468         }
 469
 470         [XmlIgnore]
 471         internal XmlSchemaObjectTable IdentityConstraints {
 472             get { return identityConstraints; }
 473         }
 474
 475         [XmlIgnore]
 476         internal Uri BaseUri {
 477             get { return baseUri; }
 478             set {
 479                 baseUri = value;
 480             }
 481         }
 482
 483         [XmlIgnore]
 484         // Please be careful with this property. Since it lazy initialized and its value depends on a global state
 485         //   if it gets called on multiple schemas in a different order the schemas will end up with different IDs
 486         //   Unfortunately the IDs are used to sort the schemas in the schema set and thus changing the IDs might change
 487         //   the order which would be a breaking change!!
 488         // Simply put if you are planning to add or remove a call to this getter you need to be extra carefull
 489         //   or better don't do it at all.
 490         internal int SchemaId {
 491             get {
 492                 if (schemaId == -1) {
 493                     schemaId = Interlocked.Increment(ref globalIdCounter);
 494                 }
 495                 return schemaId;
 496             }
 497         }
 498
 499         [XmlIgnore]
 500         internal bool IsChameleon {
 501             get { return isChameleon; }
 502             set { isChameleon = value; }
 503         }
 504
 505         [XmlIgnore]
 506         internal Hashtable Ids {
 507             get { return ids; }
 508         }
 509
 510         [XmlIgnore]
 511         internal XmlDocument Document {
 512             get { if (document == null) document = new XmlDocument(); return document; }
 513         }
 514
 515         [XmlIgnore]
 516         internal int ErrorCount {
 517             get { return errorCount; }
 518             set { errorCount = value; }
 519         }
 520
 521         internal new XmlSchema Clone() {
 522             XmlSchema that = new XmlSchema();
 523             that.attributeFormDefault   = this.attributeFormDefault;
 524             that.elementFormDefault     = this.elementFormDefault;
 525             that.blockDefault           = this.blockDefault;
 526             that.finalDefault           = this.finalDefault;
 527             that.targetNs               = this.targetNs;
 528             that.version                = this.version;
 529             that.includes               = this.includes;
 530
 531             that.Namespaces             = this.Namespaces;
 532             that.items                  = this.items;
 533             that.BaseUri                = this.BaseUri;
 534
 535             SchemaCollectionCompiler.Cleanup(that);
 536             return that;
 537         }
 538
 539         internal XmlSchema DeepClone() {
 540             XmlSchema that = new XmlSchema();
 541             that.attributeFormDefault   = this.attributeFormDefault;
 542             that.elementFormDefault     = this.elementFormDefault;
 543             that.blockDefault           = this.blockDefault;
 544             that.finalDefault           = this.finalDefault;
 545             that.targetNs               = this.targetNs;
 546             that.version                = this.version;
 547             that.isPreprocessed         = this.isPreprocessed;
 548             //that.IsProcessing           = this.IsProcessing; //Not sure if this is needed
 549
 550             //Clone its Items
 551             for (int i = 0; i < this.items.Count; ++i) {
 552                 XmlSchemaObject newItem;
 553
 554                 XmlSchemaComplexType complexType;
 555                 XmlSchemaElement element;
 556                 XmlSchemaGroup group;
 557
 558                 if ((complexType = items[i] as XmlSchemaComplexType) != null) {
 559                     newItem = complexType.Clone(this);
 560                 }
 561                 else if ((element = items[i] as XmlSchemaElement) != null) {
 562                     newItem = element.Clone(this);
 563                 }
 564                 else if ((group = items[i] as XmlSchemaGroup) != null) {
 565                     newItem = group.Clone(this);
 566                 }
 567                 else {
 568                     newItem = items[i].Clone();
 569                 }
 570                 that.Items.Add(newItem);
 571             }
 572
 573             //Clone Includes
 574             for (int i = 0; i < this.includes.Count; ++i) {
 575                 XmlSchemaExternal newInclude = (XmlSchemaExternal)this.includes[i].Clone();
 576                 that.Includes.Add(newInclude);
 577             }
 578             that.Namespaces             = this.Namespaces;
 579             //that.includes               = this.includes; //Need to verify this is OK for redefines
 580             that.BaseUri                = this.BaseUri;
 581             return that;
 582         }
 583
 584         [XmlIgnore]
 585         internal override string IdAttribute {
 586             get { return Id; }
 587             set { Id = value; }
 588         }
 589
 590         internal void SetIsCompiled(bool isCompiled) {
 591             this.isCompiled = isCompiled;
 592         }
 593
 594         internal override void SetUnhandledAttributes(XmlAttribute[] moreAttributes) {
 595             this.moreAttributes = moreAttributes;
 596         }
 597         internal override void AddAnnotation(XmlSchemaAnnotation annotation) {
 598             items.Add(annotation);
 599         }
 600
 601         internal XmlNameTable NameTable {
 602             get { if (nameTable == null) nameTable = new System.Xml.NameTable(); return nameTable; }
 603         }
 604
 605         internal ArrayList ImportedSchemas {
 606             get {
 607                 if (importedSchemas == null) {
 608                     importedSchemas = new ArrayList();
 609                 }
 610                 return importedSchemas;
 611             }
 612         }
 613
 614         internal ArrayList ImportedNamespaces {
 615             get {
 616                 if (importedNamespaces == null) {
 617                     importedNamespaces = new ArrayList();
 618                 }
 619                 return importedNamespaces;
 620             }
 621         }
 622
 623         internal void GetExternalSchemasList(IList extList, XmlSchema schema) {
 624             Debug.Assert(extList != null && schema != null);
 625             if (extList.Contains(schema)) {
 626                 return;
 627             }
 628             extList.Add(schema);
 629             for (int i = 0; i < schema.Includes.Count; ++i) {
 630                 XmlSchemaExternal ext = (XmlSchemaExternal)schema.Includes[i];
 631                 if (ext.Schema != null) {
 632                     GetExternalSchemasList(extList, ext.Schema);
 633                 }
 634             }
 635         }
 636
 637 #if TRUST_COMPILE_STATE
 638         internal void AddCompiledInfo(SchemaInfo schemaInfo) {
 639             XmlQualifiedName itemName;
 640             foreach (XmlSchemaElement element in elements.Values) {
 641                 itemName = element.QualifiedName;
 642                 schemaInfo.TargetNamespaces[itemName.Namespace] = true;
 643                 if (schemaInfo.ElementDecls[itemName] == null) {
 644                     schemaInfo.ElementDecls.Add(itemName, element.ElementDecl);
 645                 }
 646             }
 647             foreach (XmlSchemaAttribute attribute in attributes.Values) {
 648                 itemName = attribute.QualifiedName;
 649                 schemaInfo.TargetNamespaces[itemName.Namespace] = true;
 650                 if (schemaInfo.ElementDecls[itemName] == null) {
 651                     schemaInfo.AttributeDecls.Add(itemName, attribute.AttDef);
 652                 }
 653             }
 654             foreach (XmlSchemaType type in types.Values) {
 655                 itemName = type.QualifiedName;
 656                 schemaInfo.TargetNamespaces[itemName.Namespace] = true;
 657                 XmlSchemaComplexType complexType = type as XmlSchemaComplexType;
 658                 if ((complexType == null || type != XmlSchemaComplexType.AnyType) && schemaInfo.ElementDeclsByType[itemName] == null) {
 659                     schemaInfo.ElementDeclsByType.Add(itemName, type.ElementDecl);
 660                 }
 661             }
 662             foreach (XmlSchemaNotation notation in notations.Values) {
 663                 itemName = notation.QualifiedName;
 664                 schemaInfo.TargetNamespaces[itemName.Namespace] = true;
 665                 SchemaNotation no = new SchemaNotation(itemName);
 666                 no.SystemLiteral = notation.System;
 667                 no.Pubid = notation.Public;
 668                 if (schemaInfo.Notations[itemName.Name] == null) {
 669                     schemaInfo.Notations.Add(itemName.Name, no);
 670                 }
 671             }
 672         }
 673 #endif//TRUST_COMPILE_STATE
 674     }
 675
 676 #endif//!SILVERLIGHT
 677 }