mcs/class/System.XML/System.Xml.Schema/XmlSchemaElement.cs

   1 //\r
   2 // System.Xml.Schema.XmlSchemaElement.cs\r
   3 //\r
   4 // Authors:\r
   5 //      Dwivedi, Ajay kumar  Adwiv@Yahoo.com\r
   6 //      Enomoto, Atsushi     ginga@kit.hi-ho.ne.jp\r
   7 //\r
   8 using System;\r
   9 using System.Collections;\r
  10 using System.Xml;\r
  11 using System.Xml.Serialization;\r
  12 using System.ComponentModel;\r
  13 \r
  14 namespace System.Xml.Schema\r
  15 {\r
  16         /// <summary>\r
  17         /// Summary description for XmlSchemaElement.\r
  18         /// </summary>\r
  19         public class XmlSchemaElement : XmlSchemaParticle\r
  20         {\r
  21                 private XmlSchemaDerivationMethod block;\r
  22                 private XmlSchemaDerivationMethod blockResolved;\r
  23                 private XmlSchemaObjectCollection constraints;\r
  24                 private string defaultValue;\r
  25                 private object elementType;\r
  26                 private XmlSchemaDerivationMethod final;\r
  27                 private XmlSchemaDerivationMethod finalResolved;\r
  28                 private string fixedValue;\r
  29                 private XmlSchemaForm form;\r
  30                 private bool isAbstract;\r
  31                 private bool isNillable;\r
  32                 private string name;\r
  33                 private XmlQualifiedName qName;\r
  34                 private XmlQualifiedName refName;\r
  35                 private XmlSchemaType schemaType;\r
  36                 private XmlQualifiedName schemaTypeName;\r
  37                 private XmlQualifiedName substitutionGroup;\r
  38                 internal bool parentIsSchema = false;\r
  39                 private string validatedDefaultValue;\r
  40                 private string validatedFixedValue;\r
  41                 private bool actualIsAbstract;\r
  42                 private bool actualIsNillable;\r
  43                 private XmlSchemaElement substitutionGroupElement;\r
  44                 private ArrayList substitutingElements = new ArrayList ();\r
  45                 private XmlSchemaElement referencedElement;\r
  46 \r
  47                 // Post compilation items. It should be added on all schema components.\r
  48                 XmlSchema schema;\r
  49 \r
  50                 private static string xmlname = "element";\r
  51 \r
  52                 public XmlSchemaElement()\r
  53                 {\r
  54                         block = XmlSchemaDerivationMethod.None;\r
  55                         final = XmlSchemaDerivationMethod.None;\r
  56                         constraints = new XmlSchemaObjectCollection();\r
  57                         qName = XmlQualifiedName.Empty;\r
  58                         refName = XmlQualifiedName.Empty;\r
  59                         schemaTypeName = XmlQualifiedName.Empty;\r
  60                         substitutionGroup = XmlQualifiedName.Empty;\r
  61                         substitutionGroup = XmlQualifiedName.Empty;\r
  62                 }\r
  63 \r
  64                 #region Attributes\r
  65                 \r
  66                 [DefaultValue(false)]\r
  67                 [System.Xml.Serialization.XmlAttribute("abstract")]\r
  68                 public bool IsAbstract \r
  69                 {\r
  70                         get{ return  isAbstract; }\r
  71                         set{ isAbstract = value; }\r
  72                 }\r
  73 \r
  74                 [DefaultValue(XmlSchemaDerivationMethod.None)]\r
  75                 [System.Xml.Serialization.XmlAttribute("block")]\r
  76                 public XmlSchemaDerivationMethod Block \r
  77                 {\r
  78                         get{ return  block; }\r
  79                         set{ block = value; }\r
  80                 }\r
  81                 \r
  82                 [DefaultValue(null)]\r
  83                 [System.Xml.Serialization.XmlAttribute("default")]\r
  84                 public string DefaultValue \r
  85                 {\r
  86                         get{ return  defaultValue; }\r
  87                         set{ defaultValue = value; }\r
  88                 }\r
  89                 \r
  90                 [DefaultValue(XmlSchemaDerivationMethod.None)]\r
  91                 [System.Xml.Serialization.XmlAttribute("final")]\r
  92                 public XmlSchemaDerivationMethod Final \r
  93                 {\r
  94                         get{ return  final; }\r
  95                         set{ final = value; }\r
  96                 }\r
  97 \r
  98                 [DefaultValue(null)]\r
  99                 [System.Xml.Serialization.XmlAttribute("fixed")]\r
 100                 public string FixedValue \r
 101                 {\r
 102                         get{ return  fixedValue; }\r
 103                         set{ fixedValue = value; }\r
 104                 }\r
 105                 [DefaultValue(XmlSchemaForm.None)]\r
 106                 [System.Xml.Serialization.XmlAttribute("form")]\r
 107                 public XmlSchemaForm Form \r
 108                 {\r
 109                         get{ return  form; }\r
 110                         set{ form = value; }\r
 111                 }\r
 112 \r
 113                 [DefaultValue(null)]\r
 114                 [System.Xml.Serialization.XmlAttribute("name")]\r
 115                 public string Name \r
 116                 {\r
 117                         get{ return  name; }\r
 118                         set{ name = value; }\r
 119                 }\r
 120 \r
 121                 [DefaultValue(false)]\r
 122                 [System.Xml.Serialization.XmlAttribute("nillable")]\r
 123                 public bool IsNillable \r
 124                 {\r
 125                         get{ return  isNillable; }\r
 126                         set{ isNillable = value; }\r
 127                 }\r
 128 \r
 129                 [System.Xml.Serialization.XmlAttribute("ref")]\r
 130                 public XmlQualifiedName RefName \r
 131                 {\r
 132                         get{ return  refName; }\r
 133                         set{ refName = value;}\r
 134                 }\r
 135 \r
 136                 [System.Xml.Serialization.XmlAttribute("substitutionGroup")]\r
 137                 public XmlQualifiedName SubstitutionGroup\r
 138                 {\r
 139                         get{ return  substitutionGroup; }\r
 140                         set{ substitutionGroup = value; }\r
 141                 }\r
 142                 \r
 143                 [System.Xml.Serialization.XmlAttribute("type")]\r
 144                 public XmlQualifiedName SchemaTypeName \r
 145                 {\r
 146                         get{ return  schemaTypeName; }\r
 147                         set{ schemaTypeName = value; }\r
 148                 }\r
 149                 #endregion\r
 150 \r
 151                 #region Elements\r
 152 \r
 153                 [XmlElement("simpleType",typeof(XmlSchemaSimpleType),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 154                 [XmlElement("complexType",typeof(XmlSchemaComplexType),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 155                 public XmlSchemaType SchemaType \r
 156                 {\r
 157                         get{ return  schemaType; }\r
 158                         set{ schemaType = value; }\r
 159                 }\r
 160 \r
 161                 [XmlElement("unique",typeof(XmlSchemaUnique),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 162                 [XmlElement("key",typeof(XmlSchemaKey),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 163                 [XmlElement("keyref",typeof(XmlSchemaKeyref),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 164                 public XmlSchemaObjectCollection Constraints \r
 165                 {\r
 166                         get{ return constraints; }\r
 167                 }\r
 168                 #endregion\r
 169 \r
 170                 #region Post Compilation Schema Info\r
 171                 [XmlIgnore]\r
 172                 public XmlQualifiedName QualifiedName \r
 173                 {\r
 174                         get{ return qName; }\r
 175                 }\r
 176 \r
 177                 [XmlIgnore]\r
 178                 public object ElementType \r
 179                 {\r
 180                         get {\r
 181                                 if (referencedElement != null)\r
 182                                         return referencedElement.ElementType;\r
 183                                 else\r
 184                                         return elementType;\r
 185                         }\r
 186                 }\r
 187 \r
 188                 [XmlIgnore]\r
 189                 public XmlSchemaDerivationMethod BlockResolved \r
 190                 {\r
 191                         get{\r
 192                                 if (referencedElement != null)\r
 193                                         return referencedElement.BlockResolved;\r
 194                                 else\r
 195                                         return blockResolved;\r
 196                         }\r
 197                 }\r
 198                 \r
 199                 [XmlIgnore]\r
 200                 public XmlSchemaDerivationMethod FinalResolved \r
 201                 {\r
 202                         get{\r
 203                                 if (referencedElement != null)\r
 204                                         return referencedElement.FinalResolved;\r
 205                                 else\r
 206                                         return finalResolved;\r
 207                         }\r
 208                 }\r
 209 \r
 210                 internal bool ActualIsNillable {\r
 211                         get {\r
 212                                 if (referencedElement != null)\r
 213                                         return referencedElement.ActualIsNillable;\r
 214                                 else\r
 215                                         return actualIsNillable;\r
 216                         }\r
 217                 }\r
 218                 \r
 219                 internal bool ActualIsAbstract {\r
 220                         get {\r
 221                                 if (referencedElement != null)\r
 222                                         return referencedElement.ActualIsAbstract;\r
 223                                 else\r
 224                                         return actualIsAbstract;\r
 225                         }\r
 226                 }\r
 227                 \r
 228                 // Post compilation default value (normalized)\r
 229                 internal string ValidatedDefaultValue {\r
 230                         get{\r
 231                                 if (referencedElement != null)\r
 232                                         return referencedElement.ValidatedDefaultValue;\r
 233                                 else\r
 234                                         return validatedDefaultValue;\r
 235                         }\r
 236                 }\r
 237 \r
 238                 // Post compilation fixed value (normalized)\r
 239                 internal string ValidatedFixedValue {\r
 240                         get{\r
 241                                 if (referencedElement != null)\r
 242                                         return referencedElement.ValidatedFixedValue;\r
 243                                 else\r
 244                                         return validatedFixedValue;\r
 245                         }\r
 246                 }\r
 247 \r
 248                 internal ArrayList SubstitutingElements {\r
 249                         get {\r
 250                                 if (referencedElement != null)\r
 251                                         return referencedElement.SubstitutingElements;\r
 252                                 else\r
 253                                         return this.substitutingElements;\r
 254                         }\r
 255                 }\r
 256 \r
 257                 internal XmlSchemaElement SubstitutionGroupElement {\r
 258                         get {\r
 259                                 if (referencedElement != null)\r
 260                                         return referencedElement.SubstitutionGroupElement;\r
 261                                 else\r
 262                                         return substitutionGroupElement;\r
 263                         }\r
 264                 }\r
 265 \r
 266                 #endregion\r
 267 \r
 268                 private XmlSchemaParticle substChoice;\r
 269 \r
 270                 /// <remarks>\r
 271                 /// a) If Element has parent as schema:\r
 272                 ///             1. name must be present and of type NCName.\r
 273                 ///             2. ref must be absent\r
 274                 ///             3. form must be absent\r
 275                 ///             4. minOccurs must be absent\r
 276                 ///             5. maxOccurs must be absent\r
 277                 ///     b) If Element has parent is not schema and ref is absent\r
 278                 ///             1. name must be present and of type NCName.\r
 279                 ///             2. if form equals qualified or form is absent and schema's formdefault is qualifed,\r
 280                 ///                targetNamespace is schema's targetnamespace else empty.\r
 281                 ///             3. type and either <simpleType> or <complexType> are mutually exclusive\r
 282                 ///             4. default and fixed must not both be present.\r
 283                 ///             5. substitutiongroup must be absent\r
 284                 ///             6. final must be absent\r
 285                 ///             7. abstract must be absent\r
 286                 ///     c) if the parent is not schema and ref is set\r
 287                 ///             1. name must not be present\r
 288                 ///             2. all of <simpleType>,<complexType>,  <key>, <keyref>, <unique>, nillable, \r
 289                 ///                default, fixed, form, block and type,  must be absent.\r
 290                 ///         3. substitutiongroup is prohibited\r
 291                 ///             4. final is prohibited\r
 292                 ///             5. abstract is prohibited\r
 293                 ///             6. default and fixed must not both be present.(Actually both are absent)\r
 294                 /// </remarks>  \r
 295                 internal override int Compile(ValidationEventHandler h, XmlSchema schema)\r
 296                 {\r
 297                         // If this is already compiled this time, simply skip.\r
 298                         if (this.IsComplied (schema.CompilationId))\r
 299                                 return 0;\r
 300                         this.schema = schema;\r
 301 \r
 302                         if(this.defaultValue != null && this.fixedValue != null)\r
 303                                 error(h,"both default and fixed can't be present");\r
 304 \r
 305                         if(parentIsSchema || isRedefineChild)\r
 306                         {\r
 307                                 if(this.refName != null && !RefName.IsEmpty)\r
 308                                         error(h,"ref must be absent");\r
 309 \r
 310                                 if(this.name == null)   //b1\r
 311                                         error(h,"Required attribute name must be present");\r
 312                                 else if(!XmlSchemaUtil.CheckNCName(this.name)) // b1.2\r
 313                                         error(h,"attribute name must be NCName");\r
 314                                 else\r
 315                                         this.qName = new XmlQualifiedName (this.name, schema.TargetNamespace);\r
 316 \r
 317                                 if(form != XmlSchemaForm.None)\r
 318                                         error(h,"form must be absent");\r
 319                                 if(MinOccursString != null)\r
 320                                         error(h,"minOccurs must be absent");\r
 321                                 if(MaxOccursString != null)\r
 322                                         error(h,"maxOccurs must be absent");\r
 323 \r
 324                                 XmlSchemaDerivationMethod allfinal = (XmlSchemaDerivationMethod.Extension | XmlSchemaDerivationMethod.Restriction);\r
 325                                 if(final == XmlSchemaDerivationMethod.All)\r
 326                                         finalResolved = allfinal;\r
 327                                 else if(final == XmlSchemaDerivationMethod.None)\r
 328                                         finalResolved = XmlSchemaDerivationMethod.Empty;\r
 329                                 else \r
 330                                 {\r
 331 //                                      if((final & ~allfinal) != 0)\r
 332                                         if ((final | XmlSchemaUtil.FinalAllowed) != XmlSchemaUtil.FinalAllowed)\r
 333                                                 error (h,"some values for final are invalid in this context");\r
 334                                         finalResolved = final & allfinal;\r
 335                                 }\r
 336 \r
 337                                 if(schemaType != null && schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 338                                 {\r
 339                                         error(h,"both schemaType and content can't be present");\r
 340                                 }\r
 341 \r
 342                                 //Even if both are present, read both of them.\r
 343                                 if(schemaType != null)\r
 344                                 {\r
 345                                         if(schemaType is XmlSchemaSimpleType)\r
 346                                         {\r
 347                                                 errorCount += ((XmlSchemaSimpleType)schemaType).Compile(h,schema);\r
 348                                         }\r
 349                                         else if(schemaType is XmlSchemaComplexType)\r
 350                                         {\r
 351                                                 errorCount += ((XmlSchemaComplexType)schemaType).Compile(h,schema);\r
 352                                         }\r
 353                                         else\r
 354                                                 error(h,"only simpletype or complextype is allowed");\r
 355                                 }\r
 356                                 if(schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 357                                 {\r
 358                                         if(!XmlSchemaUtil.CheckQName(SchemaTypeName))\r
 359                                                 error(h,"SchemaTypeName must be an XmlQualifiedName");\r
 360                                 }\r
 361                                 if(SubstitutionGroup != null && !SubstitutionGroup.IsEmpty)\r
 362                                 {\r
 363                                         if(!XmlSchemaUtil.CheckQName(SubstitutionGroup))\r
 364                                                 error(h,"SubstitutionGroup must be a valid XmlQualifiedName");\r
 365                                 }\r
 366 \r
 367                                 foreach(XmlSchemaObject obj in constraints)\r
 368                                 {\r
 369                                         if(obj is XmlSchemaUnique)\r
 370                                                 errorCount += ((XmlSchemaUnique)obj).Compile(h,schema);\r
 371                                         else if(obj is XmlSchemaKey)\r
 372                                                 errorCount += ((XmlSchemaKey)obj).Compile(h,schema);\r
 373                                         else if(obj is XmlSchemaKeyref)\r
 374                                                 errorCount += ((XmlSchemaKeyref)obj).Compile(h,schema);\r
 375                                 }\r
 376                         }\r
 377                         else\r
 378                         {\r
 379                                 if(substitutionGroup != null && !substitutionGroup.IsEmpty)\r
 380                                         error(h,"substitutionGroup must be absent");\r
 381                                 if(final != XmlSchemaDerivationMethod.None)\r
 382                                         error(h,"final must be absent");\r
 383 \r
 384                                 CompileOccurence (h, schema);\r
 385 \r
 386                                 if(refName == null || RefName.IsEmpty)\r
 387                                 {\r
 388                                         string targetNamespace = String.Empty;\r
 389 \r
 390                                         if(form == XmlSchemaForm.Qualified || (form == XmlSchemaForm.None && schema.ElementFormDefault == XmlSchemaForm.Qualified))\r
 391                                                 targetNamespace = schema.TargetNamespace;\r
 392 \r
 393                                         if(this.name == null)   //b1\r
 394                                                 error(h,"Required attribute name must be present");\r
 395                                         else if(!XmlSchemaUtil.CheckNCName(this.name)) // b1.2\r
 396                                                 error(h,"attribute name must be NCName");\r
 397                                         else\r
 398                                                 this.qName = new XmlQualifiedName(this.name, targetNamespace);\r
 399                                 \r
 400                                         if(schemaType != null && schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 401                                         {\r
 402                                                 error(h,"both schemaType and content can't be present");\r
 403                                         }\r
 404 \r
 405                                         //Even if both are present, read both of them.\r
 406                                         if(schemaType != null)\r
 407                                         {\r
 408                                                 if(schemaType is XmlSchemaSimpleType)\r
 409                                                 {\r
 410                                                         errorCount += ((XmlSchemaSimpleType)schemaType).Compile(h,schema);\r
 411                                                 }\r
 412                                                 else if(schemaType is XmlSchemaComplexType)\r
 413                                                 {\r
 414                                                         errorCount += ((XmlSchemaComplexType)schemaType).Compile(h,schema);\r
 415                                                 }\r
 416                                                 else\r
 417                                                         error(h,"only simpletype or complextype is allowed");\r
 418                                         }\r
 419                                         if(schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 420                                         {\r
 421                                                 if(!XmlSchemaUtil.CheckQName(SchemaTypeName))\r
 422                                                         error(h,"SchemaTypeName must be an XmlQualifiedName");\r
 423                                         }\r
 424                                         if(SubstitutionGroup != null && !SubstitutionGroup.IsEmpty)\r
 425                                         {\r
 426                                                 if(!XmlSchemaUtil.CheckQName(SubstitutionGroup))\r
 427                                                         error(h,"SubstitutionGroup must be a valid XmlQualifiedName");\r
 428                                         }\r
 429 \r
 430                                         foreach(XmlSchemaObject obj in constraints)\r
 431                                         {\r
 432                                                 if(obj is XmlSchemaUnique)\r
 433                                                         errorCount += ((XmlSchemaUnique)obj).Compile(h,schema);\r
 434                                                 else if(obj is XmlSchemaKey)\r
 435                                                         errorCount += ((XmlSchemaKey)obj).Compile(h,schema);\r
 436                                                 else if(obj is XmlSchemaKeyref)\r
 437                                                         errorCount += ((XmlSchemaKeyref)obj).Compile(h,schema);\r
 438                                         }\r
 439                                 }\r
 440                                 else\r
 441                                 {\r
 442                                         if(!XmlSchemaUtil.CheckQName(RefName))\r
 443                                                 error(h,"RefName must be a XmlQualifiedName");\r
 444 \r
 445                                         if(name != null)\r
 446                                                 error(h,"name must not be present when ref is present");\r
 447                                         if(Constraints.Count != 0)\r
 448                                                 error(h,"key, keyref and unique must be absent");\r
 449                                         if(isNillable)\r
 450                                                 error(h,"nillable must be absent");\r
 451                                         if(defaultValue != null)\r
 452                                                 error(h,"default must be absent");\r
 453                                         if(fixedValue != null)\r
 454                                                 error(h,"fixed must be null");\r
 455                                         if(form != XmlSchemaForm.None)\r
 456                                                 error(h,"form must be absent");\r
 457                                         if(block != XmlSchemaDerivationMethod.None)\r
 458                                                 error(h,"block must be absent");\r
 459                                         if(schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 460                                                 error(h,"type must be absent");\r
 461                                         if(SchemaType != null)\r
 462                                                 error(h,"simpleType or complexType must be absent");\r
 463 \r
 464                                         qName = RefName;\r
 465                                 }\r
 466                         }\r
 467 \r
 468                         switch (block) {\r
 469                         case XmlSchemaDerivationMethod.All:\r
 470                                 blockResolved = XmlSchemaDerivationMethod.All;\r
 471                                 break;\r
 472                         case XmlSchemaDerivationMethod.None:\r
 473                                 blockResolved = XmlSchemaDerivationMethod.Empty;\r
 474                                 break;\r
 475                         default:\r
 476                                 if ((block | XmlSchemaUtil.ElementBlockAllowed) != XmlSchemaUtil.ElementBlockAllowed)\r
 477                                         error (h,"Some of the values for block are invalid in this context");\r
 478                                 blockResolved = block;\r
 479                                 break;\r
 480                         }\r
 481 \r
 482                         if (Constraints != null) {\r
 483                                 XmlSchemaObjectTable table = new XmlSchemaObjectTable ();\r
 484                                 foreach (XmlSchemaIdentityConstraint c in Constraints) {\r
 485                                         XmlSchemaUtil.AddToTable (table, c, c.QualifiedName, h);\r
 486                                 }\r
 487                         }\r
 488 \r
 489                         XmlSchemaUtil.CompileID(Id,this,schema.IDCollection,h);\r
 490 \r
 491                         this.CompilationId = schema.CompilationId;\r
 492                         return errorCount;\r
 493                 }\r
 494 \r
 495                 [MonoTODO ("Return clone in case when it returns itself")]\r
 496                 internal override XmlSchemaParticle GetOptimizedParticle (bool isTop)\r
 497                 {\r
 498                         if (OptimizedParticle != null)\r
 499                                 return OptimizedParticle;\r
 500                         if (RefName != null && RefName != XmlQualifiedName.Empty) {\r
 501                                 referencedElement = schema.Elements [RefName] as XmlSchemaElement;\r
 502                         }\r
 503 \r
 504 //                      if (this.referencedElement != null)\r
 505 //                              OptimizedParticle = referencedElement.GetOptimizedParticle (isTop);\r
 506 //                      else \r
 507                         if (ValidatedMaxOccurs == 0)\r
 508                                 OptimizedParticle = XmlSchemaParticle.Empty;\r
 509                         // Substitution Group\r
 510                         else if (SubstitutingElements != null && SubstitutingElements.Count > 0) {\r
 511                                 XmlSchemaChoice choice = new XmlSchemaChoice ();\r
 512                                 choice.MinOccurs = MinOccurs;\r
 513                                 choice.MaxOccurs = MaxOccurs;\r
 514                                 substChoice = choice;\r
 515                                 choice.Compile (null, schema); // compute Validated Min/Max Occurs.\r
 516                                 XmlSchemaElement item = this.MemberwiseClone () as XmlSchemaElement;\r
 517                                 item.MinOccurs = 1;\r
 518                                 item.MaxOccurs = 1;\r
 519                                 item.substitutionGroupElement = null;\r
 520                                 item.substitutingElements = null;\r
 521                                 for (int i = 0; i < SubstitutingElements.Count; i++) {\r
 522                                         XmlSchemaElement se = SubstitutingElements [i] as XmlSchemaElement;\r
 523 //                                      choice.Items.Add (se);\r
 524 //                                      choice.CompiledItems.Add (se);\r
 525                                         this.AddSubstElementRecursively (choice.Items, se);\r
 526                                         this.AddSubstElementRecursively (choice.CompiledItems, se);\r
 527                                 }\r
 528                                 if (!choice.Items.Contains (item)) {\r
 529                                         choice.Items.Add (item);\r
 530                                         choice.CompiledItems.Add (item);\r
 531                                 }\r
 532                                 OptimizedParticle = choice;\r
 533                         }\r
 534                         else\r
 535                                 OptimizedParticle = this;//.MemberwiseClone () as XmlSchemaElement;\r
 536                         return OptimizedParticle;\r
 537                 }\r
 538 \r
 539                 private void AddSubstElementRecursively (XmlSchemaObjectCollection col, XmlSchemaElement el)\r
 540                 {\r
 541                         if (el.SubstitutingElements != null)\r
 542                                 for (int i = 0; i < el.SubstitutingElements.Count; i++)\r
 543                                         this.AddSubstElementRecursively (col, el.SubstitutingElements [i] as XmlSchemaElement);\r
 544                         if (!col.Contains (el))\r
 545                                 col.Add (el);\r
 546                 }\r
 547 \r
 548                 internal void FillSubstitutionElementInfo ()\r
 549                 {\r
 550                         if (this.substitutionGroupElement != null)\r
 551                                 return;\r
 552 \r
 553                         if (this.SubstitutionGroup != XmlQualifiedName.Empty) {\r
 554                                 XmlSchemaElement substElem = schema.Elements [SubstitutionGroup] as XmlSchemaElement;\r
 555                                 this.substitutionGroupElement = substElem;\r
 556                                 if (substElem != null)\r
 557                                         substElem.substitutingElements.Add (this);\r
 558                         }\r
 559                 }\r
 560 \r
 561                 internal override int Validate(ValidationEventHandler h, XmlSchema schema)\r
 562                 {\r
 563                         if (IsValidated (schema.CompilationId))\r
 564                                 return errorCount;\r
 565 \r
 566                         // See XML Schema Structures 3.6 for the complete description.\r
 567 \r
 568                         // Element Declaration Properties Correct\r
 569                         // 1. = 3.3.1 (modulo 5.3)\r
 570 \r
 571                         // 3.3.1:\r
 572                         // {annotation} is as is.\r
 573                         // {name}, {target namespace}, {scope}, {disallowed substitution},\r
 574                         // {substitution group exclusions} (handled the same as 'disallowed substitution')\r
 575                         // and {identity-constraint-definitions} are Compile()d.\r
 576                         // {value constraint} is going to be filled in step 2.\r
 577 \r
 578                         // actual {nillable}, {abstract} \r
 579                         this.actualIsNillable = IsNillable;\r
 580                         this.actualIsAbstract = IsAbstract;\r
 581 \r
 582                         // Before determining element type, we need to validate substituting element\r
 583                         if (this.SubstitutionGroup != XmlQualifiedName.Empty) {\r
 584                                 XmlSchemaElement substElem = substitutionGroupElement;\r
 585                                 if (substElem != null)\r
 586                                         substElem.Validate (h, schema);\r
 587                         }\r
 588 \r
 589                         // {type} from here\r
 590                         XmlSchemaDatatype datatype = null;\r
 591                         if (schemaType != null)\r
 592                                 elementType = schemaType;\r
 593                         else if (SchemaTypeName != XmlQualifiedName.Empty) {\r
 594                                 XmlSchemaType type = schema.SchemaTypes [SchemaTypeName] as XmlSchemaType;\r
 595                                 // If el is null, then it is missing sub components .\r
 596                                 if (type != null) {\r
 597                                         type.Validate (h, schema);\r
 598                                         elementType = type;\r
 599                                 }\r
 600                                 else if (SchemaTypeName == XmlSchemaComplexType.AnyTypeName)\r
 601                                         elementType = XmlSchemaComplexType.AnyType;
 602                                 else if (SchemaTypeName.Namespace == XmlSchema.Namespace) {\r
 603                                         datatype = XmlSchemaDatatype.FromName (SchemaTypeName);\r
 604                                         if (datatype == null)\r
 605                                                 error (h, "Invalid schema datatype was specified.");\r
 606                                         else\r
 607                                                 elementType = datatype;\r
 608                                 }\r
 609                                 // otherwise, it might be missing sub components.\r
 610                                 else if (!schema.IsNamespaceAbsent (SchemaTypeName.Namespace))\r
 611                                         error (h, "Referenced element schema type " + SchemaTypeName + " was not found in the corresponding schema.");\r
 612                         }\r
 613                         else if (RefName != XmlQualifiedName.Empty)\r
 614                         {\r
 615                                 XmlSchemaElement refElem = schema.Elements [RefName] as XmlSchemaElement;\r
 616                                 // If el is null, then it is missing sub components .\r
 617                                 if (refElem != null) {\r
 618                                         this.referencedElement = refElem;\r
 619                                         errorCount += refElem.Validate (h, schema);\r
 620                                 }\r
 621                                 // otherwise, it might be missing sub components.\r
 622                                 else if (!schema.IsNamespaceAbsent (RefName.Namespace))\r
 623                                         error (h, "Referenced element " + RefName + " was not found in the corresponding schema.");\r
 624                         }\r
 625                         \r
 626                         // Otherwise if there are substitution group, then the type of the substitution group element.\r
 627                         if (referencedElement == null) {\r
 628                                 if (elementType == null && this.substitutionGroupElement != null)\r
 629                                         elementType = substitutionGroupElement.ElementType;\r
 630                                 // Otherwise, the -ur type- definition.\r
 631                                 if (elementType == null)\r
 632                                         elementType = XmlSchemaComplexType.AnyType;\r
 633                         }\r
 634 \r
 635                         XmlSchemaType xsType = elementType as XmlSchemaType;\r
 636                         if (xsType != null) {\r
 637                                 errorCount += xsType.Validate (h, schema);\r
 638                                 datatype = xsType.Datatype;\r
 639                         }\r
 640                         // basic {type} is now filled, except for derivation by {substitution group}.\r
 641 \r
 642                         // {substitution group affiliation}\r
 643                         // 3. subsitution group's type derivation check.\r
 644                         if (this.SubstitutionGroup != XmlQualifiedName.Empty) {\r
 645                                 XmlSchemaElement substElem = schema.Elements [SubstitutionGroup] as XmlSchemaElement;\r
 646                                 // If el is null, then it is missing sub components .\r
 647                                 if (substElem != null) {\r
 648                                         XmlSchemaType substSchemaType = substElem.ElementType as XmlSchemaType;\r
 649                                         if (substSchemaType != null) {\r
 650                                                 // 3.3.6 Properties Correct 3.\r
 651                                                 if ((substElem.FinalResolved & XmlSchemaDerivationMethod.Substitution) != 0)\r
 652                                                         error (h, "Substituted element blocks substitution.");\r
 653                                                 if (xsType != null && (substElem.FinalResolved & xsType.DerivedBy) != 0)\r
 654                                                         error (h, "Invalid derivation was found. Substituted element prohibits this derivation method: " + xsType.DerivedBy + ".");\r
 655                                         }\r
 656                                         XmlSchemaComplexType xsComplexType = xsType as XmlSchemaComplexType;\r
 657                                         if (xsComplexType != null)\r
 658                                                 xsComplexType.ValidateTypeDerivationOK (substElem.ElementType, h, schema);\r
 659                                         else {\r
 660                                                 XmlSchemaSimpleType xsSimpleType = xsType as XmlSchemaSimpleType;\r
 661                                                 if (xsSimpleType != null)\r
 662                                                         xsSimpleType.ValidateTypeDerivationOK (substElem.ElementType, h, schema, true);\r
 663                                         }\r
 664 \r
 665                                 }\r
 666                                 // otherwise, it might be missing sub components.\r
 667                                 else if (!schema.IsNamespaceAbsent (SubstitutionGroup.Namespace))\r
 668                                         error (h, "Referenced element type " + SubstitutionGroup + " was not found in the corresponding schema.");\r
 669                         }\r
 670 \r
 671                         // 2. ElementDefaultValid\r
 672                         // 4. ID with {value constraint} is prohibited.\r
 673                         if (defaultValue != null || fixedValue != null) {\r
 674                                 ValidateElementDefaultValidImmediate (h, schema);\r
 675                                 if (datatype != null && // Such situation is basically an error. For ValidationEventHandler.\r
 676                                         datatype.TokenizedType == XmlTokenizedType.ID)\r
 677                                         error (h, "Element type is ID, which does not allows default or fixed values.");\r
 678                         }\r
 679 \r
 680                         // Identity constraints (3.11.3 / 3.11.6)\r
 681                         foreach (XmlSchemaIdentityConstraint ident in Constraints)\r
 682                                 ident.Validate (h, schema);\r
 683 \r
 684                         ValidationId = schema.ValidationId;\r
 685                         return errorCount;\r
 686                 }\r
 687 \r
 688                 internal override bool ParticleEquals (XmlSchemaParticle other)\r
 689                 {\r
 690                         XmlSchemaElement element = other as XmlSchemaElement;\r
 691                         if (element == null)\r
 692                                 return false;\r
 693                         if (this.ValidatedMaxOccurs != element.ValidatedMaxOccurs ||\r
 694                                 this.ValidatedMinOccurs != element.ValidatedMinOccurs)\r
 695                                 return false;\r
 696                         if (this.QualifiedName != element.QualifiedName ||\r
 697                                 this.ElementType != element.ElementType ||\r
 698                                 this.Constraints.Count != element.Constraints.Count)\r
 699                                 return false;\r
 700                         for (int i = 0; i < this.Constraints.Count; i++) {\r
 701                                 XmlSchemaIdentityConstraint c1 = Constraints [i] as XmlSchemaIdentityConstraint;\r
 702                                 XmlSchemaIdentityConstraint c2 = element.Constraints [i] as XmlSchemaIdentityConstraint;\r
 703                                 if (c1.QualifiedName != c2.QualifiedName ||\r
 704                                         c1.Selector.XPath != c2.Selector.XPath ||\r
 705                                         c1.Fields.Count != c2.Fields.Count)\r
 706                                         return false;\r
 707                                 for (int f = 0; f < c1.Fields.Count; f++) {\r
 708                                         XmlSchemaXPath f1 = c1.Fields [f] as XmlSchemaXPath;\r
 709                                         XmlSchemaXPath f2 = c2.Fields [f] as XmlSchemaXPath;\r
 710                                         if (f1.XPath != f2.XPath)\r
 711                                                 return false;\r
 712                                 }\r
 713                         }\r
 714                         if (this.BlockResolved != element.BlockResolved ||\r
 715                                 this.FinalResolved != element.FinalResolved ||\r
 716                                 this.ValidatedDefaultValue != element.ValidatedDefaultValue ||\r
 717                                 this.ValidatedFixedValue != element.ValidatedFixedValue)\r
 718                                 return false;\r
 719                         return true;\r
 720                 }\r
 721 \r
 722                 internal override bool ValidateDerivationByRestriction (XmlSchemaParticle baseParticle,\r
 723                         ValidationEventHandler h, XmlSchema schema, bool raiseError)\r
 724                 {\r
 725                         // element - NameAndTypeOK\r
 726                         XmlSchemaElement baseElement = baseParticle as XmlSchemaElement;\r
 727                         if (baseElement != null) {\r
 728                                 return ValidateDerivationByRestrictionNameAndTypeOK (baseElement, h, schema, raiseError);\r
 729                         }\r
 730 \r
 731                         // any - NSCompat\r
 732                         XmlSchemaAny baseAny = baseParticle as XmlSchemaAny;\r
 733                         if (baseAny != null) {\r
 734                                 // NSCompat\r
 735                                 if (!baseAny.ValidateWildcardAllowsNamespaceName (this.QualifiedName.Namespace, h, schema, raiseError))\r
 736                                         return false;\r
 737                                 return ValidateOccurenceRangeOK (baseAny, h, schema, raiseError);\r
 738                         }\r
 739 \r
 740 //*\r
 741                         // choice - RecurseAsIfGroup\r
 742                         XmlSchemaGroupBase gb = null;\r
 743                         if (baseParticle is XmlSchemaSequence)\r
 744                                 gb = new XmlSchemaSequence ();\r
 745                         else if (baseParticle is XmlSchemaChoice)\r
 746                                 gb = new XmlSchemaChoice ();\r
 747                         else if (baseParticle is XmlSchemaAll)\r
 748                                 gb = new XmlSchemaAll ();\r
 749 \r
 750                         if (gb != null) {\r
 751                                 gb.Items.Add (this);\r
 752                                 gb.Compile (h, schema);\r
 753                                 gb.Validate (h, schema);\r
 754                                 // It looks weird, but here we never think about \r
 755                                 // _pointlessness_ of this groupbase particle.\r
 756                                 return gb.ValidateDerivationByRestriction (baseParticle, h, schema, raiseError);\r
 757                         }\r
 758 //*/\r
 759                         return true;\r
 760                 }\r
 761 \r
 762                 private bool ValidateDerivationByRestrictionNameAndTypeOK (XmlSchemaElement baseElement,\r
 763                         ValidationEventHandler h, XmlSchema schema, bool raiseError)\r
 764                 {\r
 765                         // 1.\r
 766                         if (this.QualifiedName != baseElement.QualifiedName) {\r
 767                                 if (raiseError)\r
 768                                         error (h, "Invalid derivation by restriction of particle was found. Both elements must have the same name.");\r
 769                                 return false;\r
 770                         }\r
 771                         // 2.\r
 772                         if (this.isNillable && !baseElement.isNillable) {\r
 773                                 if (raiseError)\r
 774                                         error (h, "Invalid element derivation by restriction of particle was found. Base element is not nillable and derived type is nillable.");\r
 775                                 return false;\r
 776                         }\r
 777                         // 3.\r
 778                         if (!ValidateOccurenceRangeOK (baseElement, h, schema, raiseError))\r
 779                                 return false;\r
 780                         // 4.\r
 781                         if (baseElement.ValidatedFixedValue != null &&\r
 782                                 baseElement.ValidatedFixedValue != this.ValidatedFixedValue) {\r
 783                                 if (raiseError)\r
 784                                         error (h, "Invalid element derivation by restriction of particle was found. Both fixed value must be the same.");\r
 785                                 return false;\r
 786                         }\r
 787                         // 5. TODO: What is "identity constraints subset" ???\r
 788 \r
 789                         // 6. \r
 790                         if ((baseElement.BlockResolved | this.BlockResolved) != this.BlockResolved) {\r
 791                                 if (raiseError)\r
 792                                         error (h, "Invalid derivation by restriction of particle was found. Derived element must contain all of the base element's block value.");\r
 793                                 return false;\r
 794                         }\r
 795                         // 7.\r
 796                         if (baseElement.ElementType != null) {\r
 797                                 XmlSchemaComplexType derivedCType = this.ElementType as XmlSchemaComplexType;\r
 798                                 if (derivedCType != null) {\r
 799                                         // FIXME: W3C REC says that it is Type Derivation OK to be check, but\r
 800                                         // in fact it should be DerivationValid (Restriction, Complex).\r
 801                                         derivedCType.ValidateDerivationValidRestriction (\r
 802                                                 baseElement.ElementType as XmlSchemaComplexType, h, schema);\r
 803                                         derivedCType.ValidateTypeDerivationOK (baseElement.ElementType, h, schema);\r
 804                                 } else {\r
 805                                         XmlSchemaSimpleType derivedSType = this.ElementType as XmlSchemaSimpleType;\r
 806                                         if (derivedSType != null)\r
 807                                                 derivedSType.ValidateTypeDerivationOK (baseElement.ElementType, h, schema, true);\r
 808                                         else if (baseElement.ElementType != XmlSchemaComplexType.AnyType && baseElement.ElementType != this.ElementType) {\r
 809                                                 if (raiseError)\r
 810                                                         error (h, "Invalid element derivation by restriction of particle was found. Both primitive types differ.");\r
 811                                                 return false;\r
 812                                         }\r
 813                                 }\r
 814                         }\r
 815                         return true;\r
 816                 }\r
 817 \r
 818                 internal override void CheckRecursion (int depth, ValidationEventHandler h, XmlSchema schema)\r
 819                 {\r
 820                         XmlSchemaComplexType ct = this.ElementType as XmlSchemaComplexType;\r
 821                         if (ct == null || ct.Particle == null)\r
 822                                 return;\r
 823                         ct.Particle.CheckRecursion (depth + 1, h, schema);\r
 824                 }\r
 825 \r
 826                 internal override void ValidateUniqueParticleAttribution (XmlSchemaObjectTable qnames, ArrayList nsNames,\r
 827                         ValidationEventHandler h, XmlSchema schema)\r
 828                 {\r
 829                         if (qnames.Contains (this.QualifiedName))// && !this.ParticleEquals ((XmlSchemaParticle) qnames [this.QualifiedName]))\r
 830                                 error (h, "Ambiguous element label was detected: " + this.QualifiedName);\r
 831                         else {\r
 832                                 foreach (XmlSchemaAny any in nsNames) {\r
 833                                         if (any.ValidatedMaxOccurs == 0)\r
 834                                                 continue;\r
 835                                         if (any.HasValueAny ||\r
 836                                                 any.HasValueLocal && this.QualifiedName.Namespace == "" ||\r
 837                                                 any.HasValueOther && this.QualifiedName.Namespace != this.QualifiedName.Namespace ||\r
 838                                                 any.HasValueTargetNamespace && this.QualifiedName.Namespace == this.QualifiedName.Namespace) {\r
 839                                                 error (h, "Ambiguous element label which is contained by -any- particle was detected: " + this.QualifiedName);\r
 840                                                 break;\r
 841                                         } else if (!any.HasValueOther) {\r
 842                                                 bool bad = false;\r
 843                                                 foreach (string ns in any.ResolvedNamespaces) {\r
 844                                                         if (ns == this.QualifiedName.Namespace) {\r
 845                                                                 bad = true;\r
 846                                                                 break;\r
 847                                                         }\r
 848                                                 }\r
 849                                                 if (bad) {\r
 850                                                         error (h, "Ambiguous element label which is contained by -any- particle was detected: " + this.QualifiedName);\r
 851                                                         break;\r
 852                                                 }\r
 853                                         } else {\r
 854                                                 if (any.TargetNamespace.Length == 0 ||\r
 855                                                         any.TargetNamespace != this.QualifiedName.Namespace)\r
 856                                                         error (h, "Ambiguous element label which is contained by -any- particle with ##other value was detected: " + this.QualifiedName);\r
 857                                         }\r
 858                                 }\r
 859                                 qnames.Add (this.QualifiedName, this);\r
 860                         }\r
 861                 }\r
 862 \r
 863                 internal override void ValidateUniqueTypeAttribution (XmlSchemaObjectTable labels,\r
 864                         ValidationEventHandler h, XmlSchema schema)\r
 865                 {\r
 866                         XmlSchemaElement labeled = labels [this.QualifiedName] as XmlSchemaElement;\r
 867                         if (labeled == null)\r
 868                                 labels.Add (this.QualifiedName, this);\r
 869                         else if (labeled.ElementType != this.ElementType)\r
 870                                 error (h, "Different types are specified on the same named elements in the same sequence. Element name is " + QualifiedName);\r
 871                 }\r
 872 \r
 873 \r
 874                 // 3.3.6 Element Default Valid (Immediate)\r
 875                 private void ValidateElementDefaultValidImmediate (ValidationEventHandler h, XmlSchema schema)\r
 876                 {\r
 877                         // This presumes that ElementType is already filled.\r
 878 \r
 879                         XmlSchemaDatatype datatype = elementType as XmlSchemaDatatype;\r
 880                         XmlSchemaSimpleType simpleType = elementType as XmlSchemaSimpleType;\r
 881                         if (simpleType != null)\r
 882                                 datatype = simpleType.Datatype;\r
 883 \r
 884                         if (datatype == null) {\r
 885                                 XmlSchemaComplexType complexType = elementType as XmlSchemaComplexType;\r
 886                                 switch (complexType.ContentType) {\r
 887                                 case XmlSchemaContentType.Empty:\r
 888                                 case XmlSchemaContentType.ElementOnly:\r
 889                                         error (h, "Element content type must be simple type or mixed.");\r
 890                                         break;\r
 891                                 }\r
 892                                 datatype = XmlSchemaSimpleType.AnySimpleType;\r
 893                         }\r
 894 \r
 895                         XmlNamespaceManager nsmgr = null;\r
 896                         if (datatype.TokenizedType == XmlTokenizedType.QName) {\r
 897                                 if (this.Namespaces != null)\r
 898                                         foreach (XmlQualifiedName qname in Namespaces.ToArray ())\r
 899                                                 nsmgr.AddNamespace (qname.Name, qname.Namespace);\r
 900                         }\r
 901 \r
 902                         try {\r
 903                                 if (defaultValue != null) {\r
 904                                         validatedDefaultValue = datatype.Normalize (defaultValue);\r
 905                                         datatype.ParseValue (validatedDefaultValue, null, nsmgr);\r
 906                                 }\r
 907                         } catch (Exception ex) {\r
 908                                 // FIXME: This is not a good way to handle exception, but\r
 909                                 // I think there is no remedy for such Framework specification.\r
 910                                 error (h, "The Element's default value is invalid with respect to its type definition.", ex);\r
 911                         }\r
 912                         try {\r
 913                                 if (fixedValue != null) {\r
 914                                         validatedFixedValue = datatype.Normalize (fixedValue);\r
 915                                         datatype.ParseValue (validatedFixedValue, null, nsmgr);\r
 916                                 }\r
 917                         } catch (Exception ex) {\r
 918                                 // FIXME: This is not a good way to handle exception.\r
 919                                 error (h, "The Element's fixed value is invalid with its type definition.", ex);\r
 920                         }\r
 921                 }\r
 922 \r
 923                 //<element\r
 924                 //  abstract = boolean : false\r
 925                 //  block = (#all | List of (extension | restriction | substitution)) \r
 926                 //  default = string\r
 927                 //  final = (#all | List of (extension | restriction)) \r
 928                 //  fixed = string\r
 929                 //  form = (qualified | unqualified)\r
 930                 //  id = ID\r
 931                 //  maxOccurs = (nonNegativeInteger | unbounded)  : 1\r
 932                 //  minOccurs = nonNegativeInteger : 1\r
 933                 //  name = NCName\r
 934                 //  nillable = boolean : false\r
 935                 //  ref = QName\r
 936                 //  substitutionGroup = QName\r
 937                 //  type = QName\r
 938                 //  {any attributes with non-schema namespace . . .}>\r
 939                 //  Content: (annotation?, ((simpleType | complexType)?, (unique | key | keyref)*))\r
 940                 //</element>\r
 941 \r
 942                 internal static XmlSchemaElement Read(XmlSchemaReader reader, ValidationEventHandler h)\r
 943                 {\r
 944                         XmlSchemaElement element = new XmlSchemaElement();\r
 945                         Exception innerex;\r
 946                         reader.MoveToElement();\r
 947 \r
 948                         if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)\r
 949                         {\r
 950                                 error(h,"Should not happen :1: XmlSchemaElement.Read, name="+reader.Name,null);\r
 951                                 reader.Skip();\r
 952                                 return null;\r
 953                         }\r
 954 \r
 955                         element.LineNumber = reader.LineNumber;\r
 956                         element.LinePosition = reader.LinePosition;\r
 957                         element.SourceUri = reader.BaseURI;\r
 958 \r
 959                         while(reader.MoveToNextAttribute())\r
 960                         {\r
 961                                 if(reader.Name == "abstract")\r
 962                                 {\r
 963                                         element.IsAbstract = XmlSchemaUtil.ReadBoolAttribute(reader,out innerex);\r
 964                                         if(innerex != null)\r
 965                                                 error(h,reader.Value + " is invalid value for abstract",innerex);\r
 966                                 }\r
 967                                 else if(reader.Name == "block")\r
 968                                 {\r
 969                                         element.block = XmlSchemaUtil.ReadDerivationAttribute(reader,out innerex, "block",\r
 970                                                 XmlSchemaUtil.ElementBlockAllowed);\r
 971                                         if(innerex != null)\r
 972                                                 error (h,"some invalid values for block attribute were found",innerex);\r
 973                                 }\r
 974                                 else if(reader.Name == "default")\r
 975                                 {\r
 976                                         element.defaultValue = reader.Value;\r
 977                                 }\r
 978                                 else if(reader.Name == "final")\r
 979                                 {\r
 980                                         element.Final = XmlSchemaUtil.ReadDerivationAttribute(reader,out innerex, "final",\r
 981                                                 XmlSchemaUtil.FinalAllowed);\r
 982                                         if(innerex != null)\r
 983                                                 error (h,"some invalid values for final attribute were found",innerex);\r
 984                                 }\r
 985                                 else if(reader.Name == "fixed")\r
 986                                 {\r
 987                                         element.fixedValue = reader.Value;\r
 988                                 }\r
 989                                 else if(reader.Name == "form")\r
 990                                 {\r
 991                                         element.form = XmlSchemaUtil.ReadFormAttribute(reader,out innerex);\r
 992                                         if(innerex != null)\r
 993                                                 error(h,reader.Value + " is an invalid value for form attribute",innerex);\r
 994                                 }\r
 995                                 else if(reader.Name == "id")\r
 996                                 {\r
 997                                         element.Id = reader.Value;\r
 998                                 }\r
 999                                 else if(reader.Name == "maxOccurs")\r
1000                                 {\r
1001                                         try\r
1002                                         {\r
1003                                                 element.MaxOccursString = reader.Value;\r
1004                                         }\r
1005                                         catch(Exception e)\r
1006                                         {\r
1007                                                 error(h,reader.Value + " is an invalid value for maxOccurs",e);\r
1008                                         }\r
1009                                 }\r
1010                                 else if(reader.Name == "minOccurs")\r
1011                                 {\r
1012                                         try\r
1013                                         {\r
1014                                                 element.MinOccursString = reader.Value;\r
1015                                         }\r
1016                                         catch(Exception e)\r
1017                                         {\r
1018                                                 error(h,reader.Value + " is an invalid value for minOccurs",e);\r
1019                                         }\r
1020                                 }\r
1021                                 else if(reader.Name == "name")\r
1022                                 {\r
1023                                         element.Name = reader.Value;\r
1024                                 }\r
1025                                 else if(reader.Name == "nillable")\r
1026                                 {\r
1027                                         element.IsNillable = XmlSchemaUtil.ReadBoolAttribute(reader,out innerex);\r
1028                                         if(innerex != null)\r
1029                                                 error(h,reader.Value + "is not a valid value for nillable",innerex);\r
1030                                 }\r
1031                                 else if(reader.Name == "ref")\r
1032                                 {\r
1033                                         element.refName = XmlSchemaUtil.ReadQNameAttribute(reader,out innerex);\r
1034                                         if(innerex != null)\r
1035                                                 error(h, reader.Value + " is not a valid value for ref attribute",innerex);\r
1036                                 }\r
1037                                 else if(reader.Name == "substitutionGroup")\r
1038                                 {\r
1039                                         element.substitutionGroup = XmlSchemaUtil.ReadQNameAttribute(reader,out innerex);\r
1040                                         if(innerex != null)\r
1041                                                 error(h, reader.Value + " is not a valid value for substitutionGroup attribute",innerex);\r
1042                                 }\r
1043                                 else if(reader.Name == "type")\r
1044                                 {\r
1045                                         element.SchemaTypeName = XmlSchemaUtil.ReadQNameAttribute(reader,out innerex);\r
1046                                         if(innerex != null)\r
1047                                                 error(h, reader.Value + " is not a valid value for type attribute",innerex);\r
1048                                 }\r
1049                                 else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)\r
1050                                 {\r
1051                                         error(h,reader.Name + " is not a valid attribute for element",null);\r
1052                                 }\r
1053                                 else\r
1054                                 {\r
1055                                         XmlSchemaUtil.ReadUnhandledAttribute(reader,element);\r
1056                                 }\r
1057                         }\r
1058                         \r
1059                         reader.MoveToElement();\r
1060                         if(reader.IsEmptyElement)\r
1061                                 return element;\r
1062 \r
1063                         //  Content: annotation?, \r
1064                         //                      (simpleType | complexType)?, \r
1065                         //                      (unique | key | keyref)*\r
1066                         int level = 1;\r
1067                         while(reader.ReadNextElement())\r
1068                         {\r
1069                                 if(reader.NodeType == XmlNodeType.EndElement)\r
1070                                 {\r
1071                                         if(reader.LocalName != xmlname)\r
1072                                                 error(h,"Should not happen :2: XmlSchemaElement.Read, name="+reader.Name,null);\r
1073                                         break;\r
1074                                 }\r
1075                                 if(level <= 1 && reader.LocalName == "annotation")\r
1076                                 {\r
1077                                         level = 2; //Only one annotation\r
1078                                         XmlSchemaAnnotation annotation = XmlSchemaAnnotation.Read(reader,h);\r
1079                                         if(annotation != null)\r
1080                                                 element.Annotation = annotation;\r
1081                                         continue;\r
1082                                 }\r
1083                                 if(level <= 2)\r
1084                                 {\r
1085                                         if(reader.LocalName == "simpleType")\r
1086                                         {\r
1087                                                 level = 3;\r
1088                                                 XmlSchemaSimpleType simple = XmlSchemaSimpleType.Read(reader,h);\r
1089                                                 if(simple != null)\r
1090                                                         element.SchemaType = simple;\r
1091                                                 continue;\r
1092                                         }\r
1093                                         if(reader.LocalName == "complexType")\r
1094                                         {\r
1095                                                 level = 3;\r
1096                                                 XmlSchemaComplexType complex = XmlSchemaComplexType.Read(reader,h);\r
1097                                                 if(complex != null)\r
1098                                                 {\r
1099                                                         element.SchemaType = complex;\r
1100                                                 }\r
1101                                                 continue;\r
1102                                         }\r
1103                                 }\r
1104                                 if(level <= 3)\r
1105                                 {\r
1106                                         if(reader.LocalName == "unique")\r
1107                                         {\r
1108                                                 level = 3;\r
1109                                                 XmlSchemaUnique unique = XmlSchemaUnique.Read(reader,h);\r
1110                                                 if(unique != null)\r
1111                                                         element.constraints.Add(unique);\r
1112                                                 continue;\r
1113                                         }\r
1114                                         else if(reader.LocalName == "key")\r
1115                                         {\r
1116                                                 level = 3;\r
1117                                                 XmlSchemaKey key = XmlSchemaKey.Read(reader,h);\r
1118                                                 if(key != null)\r
1119                                                         element.constraints.Add(key);\r
1120                                                 continue;\r
1121                                         }\r
1122                                         else if(reader.LocalName == "keyref")\r
1123                                         {\r
1124                                                 level = 3;\r
1125                                                 XmlSchemaKeyref keyref = XmlSchemaKeyref.Read(reader,h);\r
1126                                                 if(keyref != null)\r
1127                                                         element.constraints.Add(keyref);\r
1128                                                 continue;\r
1129                                         }\r
1130                                 }\r
1131                                 reader.RaiseInvalidElementError();\r
1132                         }\r
1133                         return element;\r
1134                 }\r
1135         }\r
1136 }\r