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
   9 //
  10 // Permission is hereby granted, free of charge, to any person obtaining
  11 // a copy of this software and associated documentation files (the
  12 // "Software"), to deal in the Software without restriction, including
  13 // without limitation the rights to use, copy, modify, merge, publish,
  14 // distribute, sublicense, and/or sell copies of the Software, and to
  15 // permit persons to whom the Software is furnished to do so, subject to
  16 // the following conditions:
  17 //
  18 // The above copyright notice and this permission notice shall be
  19 // included in all copies or substantial portions of the Software.
  20 //
  21 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  22 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  23 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  24 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  25 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  26 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  27 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  28 //
  29 using System;\r
  30 using System.Collections;\r
  31 using System.Xml;\r
  32 using System.Xml.Serialization;\r
  33 using System.ComponentModel;\r
  34 \r
  35 namespace System.Xml.Schema\r
  36 {\r
  37         /// <summary>\r
  38         /// Summary description for XmlSchemaElement.\r
  39         /// </summary>\r
  40         public class XmlSchemaElement : XmlSchemaParticle\r
  41         {\r
  42                 private XmlSchemaDerivationMethod block;\r
  43                 private XmlSchemaDerivationMethod blockResolved;\r
  44                 private XmlSchemaObjectCollection constraints;\r
  45                 private string defaultValue;\r
  46                 private object elementType;\r
  47                 private XmlSchemaDerivationMethod final;\r
  48                 private XmlSchemaDerivationMethod finalResolved;\r
  49                 private string fixedValue;\r
  50                 private XmlSchemaForm form;\r
  51                 private bool isAbstract;\r
  52                 private bool isNillable;\r
  53                 private string name;\r
  54                 private XmlQualifiedName qName;\r
  55                 private XmlQualifiedName refName;\r
  56                 private XmlSchemaType schemaType;\r
  57                 private XmlQualifiedName schemaTypeName;\r
  58                 private XmlQualifiedName substitutionGroup;\r
  59                 internal bool parentIsSchema = false;\r
  60                 private string validatedDefaultValue;\r
  61                 private string validatedFixedValue;\r
  62                 private bool actualIsAbstract;\r
  63                 private bool actualIsNillable;\r
  64                 private XmlSchemaElement substitutionGroupElement;\r
  65                 private ArrayList substitutingElements = new ArrayList ();\r
  66                 private XmlSchemaElement referencedElement;\r
  67 \r
  68                 // Post compilation items. It should be added on all schema components.\r
  69                 XmlSchema schema;\r
  70 \r
  71                 const string xmlname = "element";\r
  72 \r
  73                 public XmlSchemaElement()\r
  74                 {\r
  75                         block = XmlSchemaDerivationMethod.None;\r
  76                         final = XmlSchemaDerivationMethod.None;\r
  77                         constraints = new XmlSchemaObjectCollection();\r
  78                         qName = XmlQualifiedName.Empty;\r
  79                         refName = XmlQualifiedName.Empty;\r
  80                         schemaTypeName = XmlQualifiedName.Empty;\r
  81                         substitutionGroup = XmlQualifiedName.Empty;\r
  82                 }\r
  83 \r
  84                 #region Attributes\r
  85                 \r
  86                 [DefaultValue(false)]\r
  87                 [System.Xml.Serialization.XmlAttribute("abstract")]\r
  88                 public bool IsAbstract \r
  89                 {\r
  90                         get{ return  isAbstract; }\r
  91                         set{ isAbstract = value; }\r
  92                 }\r
  93 \r
  94                 [DefaultValue(XmlSchemaDerivationMethod.None)]\r
  95                 [System.Xml.Serialization.XmlAttribute("block")]\r
  96                 public XmlSchemaDerivationMethod Block \r
  97                 {\r
  98                         get{ return  block; }\r
  99                         set{ block = value; }\r
 100                 }\r
 101                 \r
 102                 [DefaultValue(null)]\r
 103                 [System.Xml.Serialization.XmlAttribute("default")]\r
 104                 public string DefaultValue \r
 105                 {\r
 106                         get{ return  defaultValue; }\r
 107                         set{ defaultValue = value; }\r
 108                 }\r
 109                 \r
 110                 [DefaultValue(XmlSchemaDerivationMethod.None)]\r
 111                 [System.Xml.Serialization.XmlAttribute("final")]\r
 112                 public XmlSchemaDerivationMethod Final \r
 113                 {\r
 114                         get{ return  final; }\r
 115                         set{ final = value; }\r
 116                 }\r
 117 \r
 118                 [DefaultValue(null)]\r
 119                 [System.Xml.Serialization.XmlAttribute("fixed")]\r
 120                 public string FixedValue \r
 121                 {\r
 122                         get{ return  fixedValue; }\r
 123                         set{ fixedValue = value; }\r
 124                 }\r
 125                 [DefaultValue(XmlSchemaForm.None)]\r
 126                 [System.Xml.Serialization.XmlAttribute("form")]\r
 127                 public XmlSchemaForm Form \r
 128                 {\r
 129                         get{ return  form; }\r
 130                         set{ form = value; }\r
 131                 }\r
 132 \r
 133                 [DefaultValue(null)]\r
 134                 [System.Xml.Serialization.XmlAttribute("name")]\r
 135                 public string Name \r
 136                 {\r
 137                         get{ return  name; }\r
 138                         set{ name = value; }\r
 139                 }\r
 140 \r
 141                 [DefaultValue(false)]\r
 142                 [System.Xml.Serialization.XmlAttribute("nillable")]\r
 143                 public bool IsNillable \r
 144                 {\r
 145                         get{ return  isNillable; }\r
 146                         set{ isNillable = value; }\r
 147                 }\r
 148 \r
 149                 [System.Xml.Serialization.XmlAttribute("ref")]\r
 150                 public XmlQualifiedName RefName \r
 151                 {\r
 152                         get{ return  refName; }\r
 153                         set{ refName = value;}\r
 154                 }\r
 155 \r
 156                 [System.Xml.Serialization.XmlAttribute("substitutionGroup")]\r
 157                 public XmlQualifiedName SubstitutionGroup\r
 158                 {\r
 159                         get{ return  substitutionGroup; }\r
 160                         set{ substitutionGroup = value; }\r
 161                 }\r
 162                 \r
 163                 [System.Xml.Serialization.XmlAttribute("type")]\r
 164                 public XmlQualifiedName SchemaTypeName \r
 165                 {\r
 166                         get{ return  schemaTypeName; }\r
 167                         set{ schemaTypeName = value; }\r
 168                 }\r
 169                 #endregion\r
 170 \r
 171                 #region Elements\r
 172 \r
 173                 [XmlElement("simpleType",typeof(XmlSchemaSimpleType),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 174                 [XmlElement("complexType",typeof(XmlSchemaComplexType),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 175                 public XmlSchemaType SchemaType \r
 176                 {\r
 177                         get{ return  schemaType; }\r
 178                         set{ schemaType = value; }\r
 179                 }\r
 180 \r
 181                 [XmlElement("unique",typeof(XmlSchemaUnique),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 182                 [XmlElement("key",typeof(XmlSchemaKey),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 183                 [XmlElement("keyref",typeof(XmlSchemaKeyref),Namespace="http://www.w3.org/2001/XMLSchema")]\r
 184                 public XmlSchemaObjectCollection Constraints \r
 185                 {\r
 186                         get{ return constraints; }\r
 187                 }\r
 188                 #endregion\r
 189 \r
 190                 #region Post Compilation Schema Info\r
 191                 [XmlIgnore]\r
 192                 public XmlQualifiedName QualifiedName \r
 193                 {\r
 194                         get{ return qName; }\r
 195                 }\r
 196 \r
 197                 [XmlIgnore]\r
 198                 public object ElementType \r
 199                 {\r
 200                         get {\r
 201                                 if (referencedElement != null)\r
 202                                         return referencedElement.ElementType;\r
 203                                 else\r
 204                                         return elementType;\r
 205                         }\r
 206                 }\r
 207 \r
 208                 [XmlIgnore]\r
 209                 public XmlSchemaDerivationMethod BlockResolved \r
 210                 {\r
 211                         get{\r
 212                                 if (referencedElement != null)\r
 213                                         return referencedElement.BlockResolved;\r
 214                                 else\r
 215                                         return blockResolved;\r
 216                         }\r
 217                 }\r
 218                 \r
 219                 [XmlIgnore]\r
 220                 public XmlSchemaDerivationMethod FinalResolved \r
 221                 {\r
 222                         get{\r
 223                                 if (referencedElement != null)\r
 224                                         return referencedElement.FinalResolved;\r
 225                                 else\r
 226                                         return finalResolved;\r
 227                         }\r
 228                 }\r
 229 \r
 230                 internal bool ActualIsNillable {\r
 231                         get {\r
 232                                 if (referencedElement != null)\r
 233                                         return referencedElement.ActualIsNillable;\r
 234                                 else\r
 235                                         return actualIsNillable;\r
 236                         }\r
 237                 }\r
 238                 \r
 239                 internal bool ActualIsAbstract {\r
 240                         get {\r
 241                                 if (referencedElement != null)\r
 242                                         return referencedElement.ActualIsAbstract;\r
 243                                 else\r
 244                                         return actualIsAbstract;\r
 245                         }\r
 246                 }\r
 247                 \r
 248                 // Post compilation default value (normalized)\r
 249                 internal string ValidatedDefaultValue {\r
 250                         get{\r
 251                                 if (referencedElement != null)\r
 252                                         return referencedElement.ValidatedDefaultValue;\r
 253                                 else\r
 254                                         return validatedDefaultValue;\r
 255                         }\r
 256                 }\r
 257 \r
 258                 // Post compilation fixed value (normalized)\r
 259                 internal string ValidatedFixedValue {\r
 260                         get{\r
 261                                 if (referencedElement != null)\r
 262                                         return referencedElement.ValidatedFixedValue;\r
 263                                 else\r
 264                                         return validatedFixedValue;\r
 265                         }\r
 266                 }\r
 267 \r
 268                 internal ArrayList SubstitutingElements {\r
 269                         get {\r
 270                                 if (referencedElement != null)\r
 271                                         return referencedElement.SubstitutingElements;\r
 272                                 else\r
 273                                         return this.substitutingElements;\r
 274                         }\r
 275                 }\r
 276 \r
 277                 internal XmlSchemaElement SubstitutionGroupElement {\r
 278                         get {\r
 279                                 if (referencedElement != null)\r
 280                                         return referencedElement.SubstitutionGroupElement;\r
 281                                 else\r
 282                                         return substitutionGroupElement;\r
 283                         }\r
 284                 }\r
 285 \r
 286                 #endregion\r
 287 \r
 288                 private XmlSchemaParticle substChoice;\r
 289 \r
 290                 /// <remarks>\r
 291                 /// a) If Element has parent as schema:\r
 292                 ///             1. name must be present and of type NCName.\r
 293                 ///             2. ref must be absent\r
 294                 ///             3. form must be absent\r
 295                 ///             4. minOccurs must be absent\r
 296                 ///             5. maxOccurs must be absent\r
 297                 ///     b) If Element has parent is not schema and ref is absent\r
 298                 ///             1. name must be present and of type NCName.\r
 299                 ///             2. if form equals qualified or form is absent and schema's formdefault is qualifed,\r
 300                 ///                targetNamespace is schema's targetnamespace else empty.\r
 301                 ///             3. type and either <simpleType> or <complexType> are mutually exclusive\r
 302                 ///             4. default and fixed must not both be present.\r
 303                 ///             5. substitutiongroup must be absent\r
 304                 ///             6. final must be absent\r
 305                 ///             7. abstract must be absent\r
 306                 ///     c) if the parent is not schema and ref is set\r
 307                 ///             1. name must not be present\r
 308                 ///             2. all of <simpleType>,<complexType>,  <key>, <keyref>, <unique>, nillable, \r
 309                 ///                default, fixed, form, block and type,  must be absent.\r
 310                 ///         3. substitutiongroup is prohibited\r
 311                 ///             4. final is prohibited\r
 312                 ///             5. abstract is prohibited\r
 313                 ///             6. default and fixed must not both be present.(Actually both are absent)\r
 314                 /// </remarks>  \r
 315                 internal override int Compile(ValidationEventHandler h, XmlSchema schema)\r
 316                 {\r
 317                         // If this is already compiled this time, simply skip.\r
 318                         if (this.IsComplied (schema.CompilationId))\r
 319                                 return 0;\r
 320                         this.schema = schema;\r
 321 \r
 322                         if(this.defaultValue != null && this.fixedValue != null)\r
 323                                 error(h,"both default and fixed can't be present");\r
 324 \r
 325                         if(parentIsSchema || isRedefineChild)\r
 326                         {\r
 327                                 if(this.refName != null && !RefName.IsEmpty)\r
 328                                         error(h,"ref must be absent");\r
 329 \r
 330                                 if(this.name == null)   //b1\r
 331                                         error(h,"Required attribute name must be present");\r
 332                                 else if(!XmlSchemaUtil.CheckNCName(this.name)) // b1.2\r
 333                                         error(h,"attribute name must be NCName");\r
 334                                 else\r
 335                                         this.qName = new XmlQualifiedName (this.name, schema.TargetNamespace);\r
 336 \r
 337                                 if(form != XmlSchemaForm.None)\r
 338                                         error(h,"form must be absent");\r
 339                                 if(MinOccursString != null)\r
 340                                         error(h,"minOccurs must be absent");\r
 341                                 if(MaxOccursString != null)\r
 342                                         error(h,"maxOccurs must be absent");\r
 343 \r
 344                                 XmlSchemaDerivationMethod allfinal = (XmlSchemaDerivationMethod.Extension | XmlSchemaDerivationMethod.Restriction);\r
 345                                 if(final == XmlSchemaDerivationMethod.All)\r
 346                                         finalResolved = allfinal;\r
 347                                 else if(final == XmlSchemaDerivationMethod.None)\r
 348                                         finalResolved = XmlSchemaDerivationMethod.Empty;\r
 349                                 else \r
 350                                 {\r
 351 //                                      if((final & ~allfinal) != 0)\r
 352                                         if ((final | XmlSchemaUtil.FinalAllowed) != XmlSchemaUtil.FinalAllowed)\r
 353                                                 error (h,"some values for final are invalid in this context");\r
 354                                         finalResolved = final & allfinal;\r
 355                                 }\r
 356 \r
 357                                 if(schemaType != null && schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 358                                 {\r
 359                                         error(h,"both schemaType and content can't be present");\r
 360                                 }\r
 361 \r
 362                                 //Even if both are present, read both of them.\r
 363                                 if(schemaType != null)\r
 364                                 {\r
 365                                         if(schemaType is XmlSchemaSimpleType)\r
 366                                         {\r
 367                                                 errorCount += ((XmlSchemaSimpleType)schemaType).Compile(h,schema);\r
 368                                         }\r
 369                                         else if(schemaType is XmlSchemaComplexType)\r
 370                                         {\r
 371                                                 errorCount += ((XmlSchemaComplexType)schemaType).Compile(h,schema);\r
 372                                         }\r
 373                                         else\r
 374                                                 error(h,"only simpletype or complextype is allowed");\r
 375                                 }\r
 376                                 if(schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 377                                 {\r
 378                                         if(!XmlSchemaUtil.CheckQName(SchemaTypeName))\r
 379                                                 error(h,"SchemaTypeName must be an XmlQualifiedName");\r
 380                                 }\r
 381                                 if(SubstitutionGroup != null && !SubstitutionGroup.IsEmpty)\r
 382                                 {\r
 383                                         if(!XmlSchemaUtil.CheckQName(SubstitutionGroup))\r
 384                                                 error(h,"SubstitutionGroup must be a valid XmlQualifiedName");\r
 385                                 }\r
 386 \r
 387                                 foreach(XmlSchemaObject obj in constraints)\r
 388                                 {\r
 389                                         if(obj is XmlSchemaUnique)\r
 390                                                 errorCount += ((XmlSchemaUnique)obj).Compile(h,schema);\r
 391                                         else if(obj is XmlSchemaKey)\r
 392                                                 errorCount += ((XmlSchemaKey)obj).Compile(h,schema);\r
 393                                         else if(obj is XmlSchemaKeyref)\r
 394                                                 errorCount += ((XmlSchemaKeyref)obj).Compile(h,schema);\r
 395                                 }\r
 396                         }\r
 397                         else\r
 398                         {\r
 399                                 if(substitutionGroup != null && !substitutionGroup.IsEmpty)\r
 400                                         error(h,"substitutionGroup must be absent");\r
 401                                 if(final != XmlSchemaDerivationMethod.None)\r
 402                                         error(h,"final must be absent");\r
 403 \r
 404                                 CompileOccurence (h, schema);\r
 405 \r
 406                                 if(refName == null || RefName.IsEmpty)\r
 407                                 {\r
 408                                         string targetNamespace = String.Empty;\r
 409 \r
 410                                         if(form == XmlSchemaForm.Qualified || (form == XmlSchemaForm.None && schema.ElementFormDefault == XmlSchemaForm.Qualified))\r
 411                                                 targetNamespace = schema.TargetNamespace;\r
 412 \r
 413                                         if(this.name == null)   //b1\r
 414                                                 error(h,"Required attribute name must be present");\r
 415                                         else if(!XmlSchemaUtil.CheckNCName(this.name)) // b1.2\r
 416                                                 error(h,"attribute name must be NCName");\r
 417                                         else\r
 418                                                 this.qName = new XmlQualifiedName(this.name, targetNamespace);\r
 419                                 \r
 420                                         if(schemaType != null && schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 421                                         {\r
 422                                                 error(h,"both schemaType and content can't be present");\r
 423                                         }\r
 424 \r
 425                                         //Even if both are present, read both of them.\r
 426                                         if(schemaType != null)\r
 427                                         {\r
 428                                                 if(schemaType is XmlSchemaSimpleType)\r
 429                                                 {\r
 430                                                         errorCount += ((XmlSchemaSimpleType)schemaType).Compile(h,schema);\r
 431                                                 }\r
 432                                                 else if(schemaType is XmlSchemaComplexType)\r
 433                                                 {\r
 434                                                         errorCount += ((XmlSchemaComplexType)schemaType).Compile(h,schema);\r
 435                                                 }\r
 436                                                 else\r
 437                                                         error(h,"only simpletype or complextype is allowed");\r
 438                                         }\r
 439                                         if(schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 440                                         {\r
 441                                                 if(!XmlSchemaUtil.CheckQName(SchemaTypeName))\r
 442                                                         error(h,"SchemaTypeName must be an XmlQualifiedName");\r
 443                                         }\r
 444                                         if(SubstitutionGroup != null && !SubstitutionGroup.IsEmpty)\r
 445                                         {\r
 446                                                 if(!XmlSchemaUtil.CheckQName(SubstitutionGroup))\r
 447                                                         error(h,"SubstitutionGroup must be a valid XmlQualifiedName");\r
 448                                         }\r
 449 \r
 450                                         foreach(XmlSchemaObject obj in constraints)\r
 451                                         {\r
 452                                                 if(obj is XmlSchemaUnique)\r
 453                                                         errorCount += ((XmlSchemaUnique)obj).Compile(h,schema);\r
 454                                                 else if(obj is XmlSchemaKey)\r
 455                                                         errorCount += ((XmlSchemaKey)obj).Compile(h,schema);\r
 456                                                 else if(obj is XmlSchemaKeyref)\r
 457                                                         errorCount += ((XmlSchemaKeyref)obj).Compile(h,schema);\r
 458                                         }\r
 459                                 }\r
 460                                 else\r
 461                                 {\r
 462                                         if(!XmlSchemaUtil.CheckQName(RefName))\r
 463                                                 error(h,"RefName must be a XmlQualifiedName");\r
 464 \r
 465                                         if(name != null)\r
 466                                                 error(h,"name must not be present when ref is present");\r
 467                                         if(Constraints.Count != 0)\r
 468                                                 error(h,"key, keyref and unique must be absent");\r
 469                                         if(isNillable)\r
 470                                                 error(h,"nillable must be absent");\r
 471                                         if(defaultValue != null)\r
 472                                                 error(h,"default must be absent");\r
 473                                         if(fixedValue != null)\r
 474                                                 error(h,"fixed must be null");\r
 475                                         if(form != XmlSchemaForm.None)\r
 476                                                 error(h,"form must be absent");\r
 477                                         if(block != XmlSchemaDerivationMethod.None)\r
 478                                                 error(h,"block must be absent");\r
 479                                         if(schemaTypeName != null && !schemaTypeName.IsEmpty)\r
 480                                                 error(h,"type must be absent");\r
 481                                         if(SchemaType != null)\r
 482                                                 error(h,"simpleType or complexType must be absent");\r
 483 \r
 484                                         qName = RefName;\r
 485                                 }\r
 486                         }\r
 487 \r
 488                         switch (block) {\r
 489                         case XmlSchemaDerivationMethod.All:\r
 490                                 blockResolved = XmlSchemaDerivationMethod.All;\r
 491                                 break;\r
 492                         case XmlSchemaDerivationMethod.None:\r
 493                                 blockResolved = XmlSchemaDerivationMethod.Empty;\r
 494                                 break;\r
 495                         default:\r
 496                                 if ((block | XmlSchemaUtil.ElementBlockAllowed) != XmlSchemaUtil.ElementBlockAllowed)\r
 497                                         error (h,"Some of the values for block are invalid in this context");\r
 498                                 blockResolved = block;\r
 499                                 break;\r
 500                         }\r
 501 \r
 502                         if (Constraints != null) {\r
 503                                 XmlSchemaObjectTable table = new XmlSchemaObjectTable ();\r
 504                                 foreach (XmlSchemaIdentityConstraint c in Constraints) {\r
 505                                         XmlSchemaUtil.AddToTable (table, c, c.QualifiedName, h);\r
 506                                 }\r
 507                         }\r
 508 \r
 509                         XmlSchemaUtil.CompileID(Id,this,schema.IDCollection,h);\r
 510 \r
 511                         this.CompilationId = schema.CompilationId;\r
 512                         return errorCount;\r
 513                 }\r
 514 \r
 515                 [MonoTODO ("Return clone in case when it returns itself")]\r
 516                 internal override XmlSchemaParticle GetOptimizedParticle (bool isTop)\r
 517                 {\r
 518                         if (OptimizedParticle != null)\r
 519                                 return OptimizedParticle;\r
 520                         if (RefName != null && RefName != XmlQualifiedName.Empty) {\r
 521                                 referencedElement = schema.Elements [RefName] as XmlSchemaElement;\r
 522                         }\r
 523 \r
 524 //                      if (this.referencedElement != null)\r
 525 //                              OptimizedParticle = referencedElement.GetOptimizedParticle (isTop);\r
 526 //                      else \r
 527                         if (ValidatedMaxOccurs == 0)\r
 528                                 OptimizedParticle = XmlSchemaParticle.Empty;\r
 529                         // Substitution Group\r
 530                         else if (SubstitutingElements != null && SubstitutingElements.Count > 0) {\r
 531                                 XmlSchemaChoice choice = new XmlSchemaChoice ();\r
 532                                 choice.MinOccurs = MinOccurs;\r
 533                                 choice.MaxOccurs = MaxOccurs;\r
 534                                 substChoice = choice;\r
 535                                 choice.Compile (null, schema); // compute Validated Min/Max Occurs.\r
 536                                 XmlSchemaElement item = this.MemberwiseClone () as XmlSchemaElement;\r
 537                                 item.MinOccurs = 1;\r
 538                                 item.MaxOccurs = 1;\r
 539                                 item.substitutionGroupElement = null;\r
 540                                 item.substitutingElements = null;\r
 541                                 for (int i = 0; i < SubstitutingElements.Count; i++) {\r
 542                                         XmlSchemaElement se = SubstitutingElements [i] as XmlSchemaElement;\r
 543 //                                      choice.Items.Add (se);\r
 544 //                                      choice.CompiledItems.Add (se);\r
 545                                         this.AddSubstElementRecursively (choice.Items, se);\r
 546                                         this.AddSubstElementRecursively (choice.CompiledItems, se);\r
 547                                 }\r
 548                                 if (!choice.Items.Contains (item)) {\r
 549                                         choice.Items.Add (item);\r
 550                                         choice.CompiledItems.Add (item);\r
 551                                 }\r
 552                                 OptimizedParticle = choice;\r
 553                         }\r
 554                         else\r
 555                                 OptimizedParticle = this;//.MemberwiseClone () as XmlSchemaElement;\r
 556                         return OptimizedParticle;\r
 557                 }\r
 558 \r
 559                 private void AddSubstElementRecursively (XmlSchemaObjectCollection col, XmlSchemaElement el)\r
 560                 {\r
 561                         if (el.SubstitutingElements != null)\r
 562                                 for (int i = 0; i < el.SubstitutingElements.Count; i++)\r
 563                                         this.AddSubstElementRecursively (col, el.SubstitutingElements [i] as XmlSchemaElement);\r
 564                         if (!col.Contains (el))\r
 565                                 col.Add (el);\r
 566                 }\r
 567 \r
 568                 internal void FillSubstitutionElementInfo ()\r
 569                 {\r
 570                         if (this.substitutionGroupElement != null)\r
 571                                 return;\r
 572 \r
 573                         if (this.SubstitutionGroup != XmlQualifiedName.Empty) {\r
 574                                 XmlSchemaElement substElem = schema.Elements [SubstitutionGroup] as XmlSchemaElement;\r
 575                                 this.substitutionGroupElement = substElem;\r
 576                                 if (substElem != null)\r
 577                                         substElem.substitutingElements.Add (this);\r
 578                         }\r
 579                 }\r
 580 \r
 581                 internal override int Validate(ValidationEventHandler h, XmlSchema schema)\r
 582                 {\r
 583                         if (IsValidated (schema.CompilationId))\r
 584                                 return errorCount;\r
 585 \r
 586                         // See XML Schema Structures 3.6 for the complete description.\r
 587 \r
 588                         // Element Declaration Properties Correct\r
 589                         // 1. = 3.3.1 (modulo 5.3)\r
 590 \r
 591                         // 3.3.1:\r
 592                         // {annotation} is as is.\r
 593                         // {name}, {target namespace}, {scope}, {disallowed substitution},\r
 594                         // {substitution group exclusions} (handled the same as 'disallowed substitution')\r
 595                         // and {identity-constraint-definitions} are Compile()d.\r
 596                         // {value constraint} is going to be filled in step 2.\r
 597 \r
 598                         // actual {nillable}, {abstract} \r
 599                         this.actualIsNillable = IsNillable;\r
 600                         this.actualIsAbstract = IsAbstract;\r
 601 \r
 602                         // Before determining element type, we need to validate substituting element\r
 603                         if (this.SubstitutionGroup != XmlQualifiedName.Empty) {\r
 604                                 XmlSchemaElement substElem = substitutionGroupElement;\r
 605                                 if (substElem != null)\r
 606                                         substElem.Validate (h, schema);\r
 607                         }\r
 608 \r
 609                         // {type} from here\r
 610                         XmlSchemaDatatype datatype = null;\r
 611                         if (schemaType != null)\r
 612                                 elementType = schemaType;\r
 613                         else if (SchemaTypeName != XmlQualifiedName.Empty) {\r
 614                                 XmlSchemaType type = schema.SchemaTypes [SchemaTypeName] as XmlSchemaType;\r
 615                                 // If el is null, then it is missing sub components .\r
 616                                 if (type != null) {\r
 617                                         type.Validate (h, schema);\r
 618                                         elementType = type;\r
 619                                 }\r
 620                                 else if (SchemaTypeName == XmlSchemaComplexType.AnyTypeName)\r
 621                                         elementType = XmlSchemaComplexType.AnyType;
 622                                 else if (XmlSchemaUtil.IsBuiltInDatatypeName (SchemaTypeName)) {\r
 623                                         datatype = XmlSchemaDatatype.FromName (SchemaTypeName);\r
 624                                         if (datatype == null)\r
 625                                                 error (h, "Invalid schema datatype was specified.");\r
 626                                         else\r
 627                                                 elementType = datatype;\r
 628                                 }\r
 629                                 // otherwise, it might be missing sub components.\r
 630                                 else if (!schema.IsNamespaceAbsent (SchemaTypeName.Namespace))\r
 631                                         error (h, "Referenced element schema type " + SchemaTypeName + " was not found in the corresponding schema.");\r
 632                         }\r
 633                         else if (RefName != XmlQualifiedName.Empty)\r
 634                         {\r
 635                                 XmlSchemaElement refElem = schema.Elements [RefName] as XmlSchemaElement;\r
 636                                 // If el is null, then it is missing sub components .\r
 637                                 if (refElem != null) {\r
 638                                         this.referencedElement = refElem;\r
 639                                         errorCount += refElem.Validate (h, schema);\r
 640                                 }\r
 641                                 // otherwise, it might be missing sub components.\r
 642                                 else if (!schema.IsNamespaceAbsent (RefName.Namespace))\r
 643                                         error (h, "Referenced element " + RefName + " was not found in the corresponding schema.");\r
 644                         }\r
 645                         \r
 646                         // Otherwise if there are substitution group, then the type of the substitution group element.\r
 647                         if (referencedElement == null) {\r
 648                                 if (elementType == null && this.substitutionGroupElement != null)\r
 649                                         elementType = substitutionGroupElement.ElementType;\r
 650                                 // Otherwise, the -ur type- definition.\r
 651                                 if (elementType == null)\r
 652                                         elementType = XmlSchemaComplexType.AnyType;\r
 653                         }\r
 654 \r
 655                         XmlSchemaType xsType = elementType as XmlSchemaType;\r
 656                         if (xsType != null) {\r
 657                                 errorCount += xsType.Validate (h, schema);\r
 658                                 datatype = xsType.Datatype;\r
 659                         }\r
 660                         // basic {type} is now filled, except for derivation by {substitution group}.\r
 661 \r
 662                         // {substitution group affiliation}\r
 663                         // 3. subsitution group's type derivation check.\r
 664                         if (this.SubstitutionGroup != XmlQualifiedName.Empty) {\r
 665                                 XmlSchemaElement substElem = schema.Elements [SubstitutionGroup] as XmlSchemaElement;\r
 666                                 // If el is null, then it is missing sub components .\r
 667                                 if (substElem != null) {\r
 668                                         XmlSchemaType substSchemaType = substElem.ElementType as XmlSchemaType;\r
 669                                         if (substSchemaType != null) {\r
 670                                                 // 3.3.6 Properties Correct 3.\r
 671                                                 if ((substElem.FinalResolved & XmlSchemaDerivationMethod.Substitution) != 0)\r
 672                                                         error (h, "Substituted element blocks substitution.");\r
 673                                                 if (xsType != null && (substElem.FinalResolved & xsType.DerivedBy) != 0)\r
 674                                                         error (h, "Invalid derivation was found. Substituted element prohibits this derivation method: " + xsType.DerivedBy + ".");\r
 675                                         }\r
 676                                         XmlSchemaComplexType xsComplexType = xsType as XmlSchemaComplexType;\r
 677                                         if (xsComplexType != null)\r
 678                                                 xsComplexType.ValidateTypeDerivationOK (substElem.ElementType, h, schema);\r
 679                                         else {\r
 680                                                 XmlSchemaSimpleType xsSimpleType = xsType as XmlSchemaSimpleType;\r
 681                                                 if (xsSimpleType != null)\r
 682                                                         xsSimpleType.ValidateTypeDerivationOK (substElem.ElementType, h, schema, true);\r
 683                                         }\r
 684 \r
 685                                 }\r
 686                                 // otherwise, it might be missing sub components.\r
 687                                 else if (!schema.IsNamespaceAbsent (SubstitutionGroup.Namespace))\r
 688                                         error (h, "Referenced element type " + SubstitutionGroup + " was not found in the corresponding schema.");\r
 689                         }\r
 690 \r
 691                         // 2. ElementDefaultValid\r
 692                         // 4. ID with {value constraint} is prohibited.\r
 693                         if (defaultValue != null || fixedValue != null) {\r
 694                                 ValidateElementDefaultValidImmediate (h, schema);\r
 695                                 if (datatype != null && // Such situation is basically an error. For ValidationEventHandler.\r
 696                                         datatype.TokenizedType == XmlTokenizedType.ID)\r
 697                                         error (h, "Element type is ID, which does not allows default or fixed values.");\r
 698                         }\r
 699 \r
 700                         // Identity constraints (3.11.3 / 3.11.6)\r
 701                         foreach (XmlSchemaIdentityConstraint ident in Constraints)\r
 702                                 ident.Validate (h, schema);\r
 703 \r
 704                         ValidationId = schema.ValidationId;\r
 705                         return errorCount;\r
 706                 }\r
 707 \r
 708                 internal override bool ParticleEquals (XmlSchemaParticle other)\r
 709                 {\r
 710                         XmlSchemaElement element = other as XmlSchemaElement;\r
 711                         if (element == null)\r
 712                                 return false;\r
 713                         if (this.ValidatedMaxOccurs != element.ValidatedMaxOccurs ||\r
 714                                 this.ValidatedMinOccurs != element.ValidatedMinOccurs)\r
 715                                 return false;\r
 716                         if (this.QualifiedName != element.QualifiedName ||\r
 717                                 this.ElementType != element.ElementType ||\r
 718                                 this.Constraints.Count != element.Constraints.Count)\r
 719                                 return false;\r
 720                         for (int i = 0; i < this.Constraints.Count; i++) {\r
 721                                 XmlSchemaIdentityConstraint c1 = Constraints [i] as XmlSchemaIdentityConstraint;\r
 722                                 XmlSchemaIdentityConstraint c2 = element.Constraints [i] as XmlSchemaIdentityConstraint;\r
 723                                 if (c1.QualifiedName != c2.QualifiedName ||\r
 724                                         c1.Selector.XPath != c2.Selector.XPath ||\r
 725                                         c1.Fields.Count != c2.Fields.Count)\r
 726                                         return false;\r
 727                                 for (int f = 0; f < c1.Fields.Count; f++) {\r
 728                                         XmlSchemaXPath f1 = c1.Fields [f] as XmlSchemaXPath;\r
 729                                         XmlSchemaXPath f2 = c2.Fields [f] as XmlSchemaXPath;\r
 730                                         if (f1.XPath != f2.XPath)\r
 731                                                 return false;\r
 732                                 }\r
 733                         }\r
 734                         if (this.BlockResolved != element.BlockResolved ||\r
 735                                 this.FinalResolved != element.FinalResolved ||\r
 736                                 this.ValidatedDefaultValue != element.ValidatedDefaultValue ||\r
 737                                 this.ValidatedFixedValue != element.ValidatedFixedValue)\r
 738                                 return false;\r
 739                         return true;\r
 740                 }\r
 741 \r
 742                 internal override bool ValidateDerivationByRestriction (XmlSchemaParticle baseParticle,\r
 743                         ValidationEventHandler h, XmlSchema schema, bool raiseError)\r
 744                 {\r
 745                         // element - NameAndTypeOK\r
 746                         XmlSchemaElement baseElement = baseParticle as XmlSchemaElement;\r
 747                         if (baseElement != null) {\r
 748                                 return ValidateDerivationByRestrictionNameAndTypeOK (baseElement, h, schema, raiseError);\r
 749                         }\r
 750 \r
 751                         // any - NSCompat\r
 752                         XmlSchemaAny baseAny = baseParticle as XmlSchemaAny;\r
 753                         if (baseAny != null) {\r
 754                                 // NSCompat\r
 755                                 if (!baseAny.ValidateWildcardAllowsNamespaceName (this.QualifiedName.Namespace, h, schema, raiseError))\r
 756                                         return false;\r
 757                                 return ValidateOccurenceRangeOK (baseAny, h, schema, raiseError);\r
 758                         }\r
 759 \r
 760 //*\r
 761                         // choice - RecurseAsIfGroup\r
 762                         XmlSchemaGroupBase gb = null;\r
 763                         if (baseParticle is XmlSchemaSequence)\r
 764                                 gb = new XmlSchemaSequence ();\r
 765                         else if (baseParticle is XmlSchemaChoice)\r
 766                                 gb = new XmlSchemaChoice ();\r
 767                         else if (baseParticle is XmlSchemaAll)\r
 768                                 gb = new XmlSchemaAll ();\r
 769 \r
 770                         if (gb != null) {\r
 771                                 gb.Items.Add (this);\r
 772                                 gb.Compile (h, schema);\r
 773                                 gb.Validate (h, schema);\r
 774                                 // It looks weird, but here we never think about \r
 775                                 // _pointlessness_ of this groupbase particle.\r
 776                                 return gb.ValidateDerivationByRestriction (baseParticle, h, schema, raiseError);\r
 777                         }\r
 778 //*/\r
 779                         return true;\r
 780                 }\r
 781 \r
 782                 private bool ValidateDerivationByRestrictionNameAndTypeOK (XmlSchemaElement baseElement,\r
 783                         ValidationEventHandler h, XmlSchema schema, bool raiseError)\r
 784                 {\r
 785                         // 1.\r
 786                         if (this.QualifiedName != baseElement.QualifiedName) {\r
 787                                 if (raiseError)\r
 788                                         error (h, "Invalid derivation by restriction of particle was found. Both elements must have the same name.");\r
 789                                 return false;\r
 790                         }\r
 791                         // 2.\r
 792                         if (this.isNillable && !baseElement.isNillable) {\r
 793                                 if (raiseError)\r
 794                                         error (h, "Invalid element derivation by restriction of particle was found. Base element is not nillable and derived type is nillable.");\r
 795                                 return false;\r
 796                         }\r
 797                         // 3.\r
 798                         if (!ValidateOccurenceRangeOK (baseElement, h, schema, raiseError))\r
 799                                 return false;\r
 800                         // 4.\r
 801                         if (baseElement.ValidatedFixedValue != null &&\r
 802                                 baseElement.ValidatedFixedValue != this.ValidatedFixedValue) {\r
 803                                 if (raiseError)\r
 804                                         error (h, "Invalid element derivation by restriction of particle was found. Both fixed value must be the same.");\r
 805                                 return false;\r
 806                         }\r
 807                         // 5. TODO: What is "identity constraints subset" ???\r
 808 \r
 809                         // 6. \r
 810                         if ((baseElement.BlockResolved | this.BlockResolved) != this.BlockResolved) {\r
 811                                 if (raiseError)\r
 812                                         error (h, "Invalid derivation by restriction of particle was found. Derived element must contain all of the base element's block value.");\r
 813                                 return false;\r
 814                         }\r
 815                         // 7.\r
 816                         if (baseElement.ElementType != null) {\r
 817                                 XmlSchemaComplexType derivedCType = this.ElementType as XmlSchemaComplexType;\r
 818                                 if (derivedCType != null) {\r
 819                                         // FIXME: W3C REC says that it is Type Derivation OK to be check, but\r
 820                                         // in fact it should be DerivationValid (Restriction, Complex).\r
 821                                         derivedCType.ValidateDerivationValidRestriction (\r
 822                                                 baseElement.ElementType as XmlSchemaComplexType, h, schema);\r
 823                                         derivedCType.ValidateTypeDerivationOK (baseElement.ElementType, h, schema);\r
 824                                 } else {\r
 825                                         XmlSchemaSimpleType derivedSType = this.ElementType as XmlSchemaSimpleType;\r
 826                                         if (derivedSType != null)\r
 827                                                 derivedSType.ValidateTypeDerivationOK (baseElement.ElementType, h, schema, true);\r
 828                                         else if (baseElement.ElementType != XmlSchemaComplexType.AnyType && baseElement.ElementType != this.ElementType) {\r
 829                                                 if (raiseError)\r
 830                                                         error (h, "Invalid element derivation by restriction of particle was found. Both primitive types differ.");\r
 831                                                 return false;\r
 832                                         }\r
 833                                 }\r
 834                         }\r
 835                         return true;\r
 836                 }\r
 837 \r
 838                 internal override void CheckRecursion (int depth, ValidationEventHandler h, XmlSchema schema)\r
 839                 {\r
 840                         XmlSchemaComplexType ct = this.ElementType as XmlSchemaComplexType;\r
 841                         if (ct == null || ct.Particle == null)\r
 842                                 return;\r
 843                         ct.Particle.CheckRecursion (depth + 1, h, schema);\r
 844                 }\r
 845 \r
 846                 internal override void ValidateUniqueParticleAttribution (XmlSchemaObjectTable qnames, ArrayList nsNames,\r
 847                         ValidationEventHandler h, XmlSchema schema)\r
 848                 {\r
 849                         if (qnames.Contains (this.QualifiedName))// && !this.ParticleEquals ((XmlSchemaParticle) qnames [this.QualifiedName]))\r
 850                                 error (h, "Ambiguous element label was detected: " + this.QualifiedName);\r
 851                         else {\r
 852                                 foreach (XmlSchemaAny any in nsNames) {\r
 853                                         if (any.ValidatedMaxOccurs == 0)\r
 854                                                 continue;\r
 855                                         if (any.HasValueAny ||\r
 856                                                 any.HasValueLocal && this.QualifiedName.Namespace == "" ||\r
 857                                                 any.HasValueOther && this.QualifiedName.Namespace != this.QualifiedName.Namespace ||\r
 858                                                 any.HasValueTargetNamespace && this.QualifiedName.Namespace == this.QualifiedName.Namespace) {\r
 859                                                 error (h, "Ambiguous element label which is contained by -any- particle was detected: " + this.QualifiedName);\r
 860                                                 break;\r
 861                                         } else if (!any.HasValueOther) {\r
 862                                                 bool bad = false;\r
 863                                                 foreach (string ns in any.ResolvedNamespaces) {\r
 864                                                         if (ns == this.QualifiedName.Namespace) {\r
 865                                                                 bad = true;\r
 866                                                                 break;\r
 867                                                         }\r
 868                                                 }\r
 869                                                 if (bad) {\r
 870                                                         error (h, "Ambiguous element label which is contained by -any- particle was detected: " + this.QualifiedName);\r
 871                                                         break;\r
 872                                                 }\r
 873                                         } else {\r
 874                                                 if (any.TargetNamespace.Length == 0 ||\r
 875                                                         any.TargetNamespace != this.QualifiedName.Namespace)\r
 876                                                         error (h, "Ambiguous element label which is contained by -any- particle with ##other value was detected: " + this.QualifiedName);\r
 877                                         }\r
 878                                 }\r
 879                                 qnames.Add (this.QualifiedName, this);\r
 880                         }\r
 881                 }\r
 882 \r
 883                 internal override void ValidateUniqueTypeAttribution (XmlSchemaObjectTable labels,\r
 884                         ValidationEventHandler h, XmlSchema schema)\r
 885                 {\r
 886                         XmlSchemaElement labeled = labels [this.QualifiedName] as XmlSchemaElement;\r
 887                         if (labeled == null)\r
 888                                 labels.Add (this.QualifiedName, this);\r
 889                         else if (labeled.ElementType != this.ElementType)\r
 890                                 error (h, "Different types are specified on the same named elements in the same sequence. Element name is " + QualifiedName);\r
 891                 }\r
 892 \r
 893 \r
 894                 // 3.3.6 Element Default Valid (Immediate)\r
 895                 private void ValidateElementDefaultValidImmediate (ValidationEventHandler h, XmlSchema schema)\r
 896                 {\r
 897                         // This presumes that ElementType is already filled.\r
 898 \r
 899                         XmlSchemaDatatype datatype = elementType as XmlSchemaDatatype;\r
 900                         XmlSchemaSimpleType simpleType = elementType as XmlSchemaSimpleType;\r
 901                         if (simpleType != null)\r
 902                                 datatype = simpleType.Datatype;\r
 903 \r
 904                         if (datatype == null) {\r
 905                                 XmlSchemaComplexType complexType = elementType as XmlSchemaComplexType;\r
 906                                 switch (complexType.ContentType) {\r
 907                                 case XmlSchemaContentType.Empty:\r
 908                                 case XmlSchemaContentType.ElementOnly:\r
 909                                         error (h, "Element content type must be simple type or mixed.");\r
 910                                         break;\r
 911                                 }\r
 912                                 datatype = XmlSchemaSimpleType.AnySimpleType;\r
 913                         }\r
 914 \r
 915                         XmlNamespaceManager nsmgr = null;\r
 916                         if (datatype.TokenizedType == XmlTokenizedType.QName) {\r
 917                                 if (this.Namespaces != null)\r
 918                                         foreach (XmlQualifiedName qname in Namespaces.ToArray ())\r
 919                                                 nsmgr.AddNamespace (qname.Name, qname.Namespace);\r
 920                         }\r
 921 \r
 922                         try {\r
 923                                 if (defaultValue != null) {\r
 924                                         validatedDefaultValue = datatype.Normalize (defaultValue);\r
 925                                         datatype.ParseValue (validatedDefaultValue, null, nsmgr);\r
 926                                 }\r
 927                         } catch (Exception ex) {\r
 928                                 // FIXME: This is not a good way to handle exception, but\r
 929                                 // I think there is no remedy for such Framework specification.\r
 930                                 error (h, "The Element's default value is invalid with respect to its type definition.", ex);\r
 931                         }\r
 932                         try {\r
 933                                 if (fixedValue != null) {\r
 934                                         validatedFixedValue = datatype.Normalize (fixedValue);\r
 935                                         datatype.ParseValue (validatedFixedValue, null, nsmgr);\r
 936                                 }\r
 937                         } catch (Exception ex) {\r
 938                                 // FIXME: This is not a good way to handle exception.\r
 939                                 error (h, "The Element's fixed value is invalid with its type definition.", ex);\r
 940                         }\r
 941                 }\r
 942 \r
 943                 //<element\r
 944                 //  abstract = boolean : false\r
 945                 //  block = (#all | List of (extension | restriction | substitution)) \r
 946                 //  default = string\r
 947                 //  final = (#all | List of (extension | restriction)) \r
 948                 //  fixed = string\r
 949                 //  form = (qualified | unqualified)\r
 950                 //  id = ID\r
 951                 //  maxOccurs = (nonNegativeInteger | unbounded)  : 1\r
 952                 //  minOccurs = nonNegativeInteger : 1\r
 953                 //  name = NCName\r
 954                 //  nillable = boolean : false\r
 955                 //  ref = QName\r
 956                 //  substitutionGroup = QName\r
 957                 //  type = QName\r
 958                 //  {any attributes with non-schema namespace . . .}>\r
 959                 //  Content: (annotation?, ((simpleType | complexType)?, (unique | key | keyref)*))\r
 960                 //</element>\r
 961 \r
 962                 internal static XmlSchemaElement Read(XmlSchemaReader reader, ValidationEventHandler h)\r
 963                 {\r
 964                         XmlSchemaElement element = new XmlSchemaElement();\r
 965                         Exception innerex;\r
 966                         reader.MoveToElement();\r
 967 \r
 968                         if(reader.NamespaceURI != XmlSchema.Namespace || reader.LocalName != xmlname)\r
 969                         {\r
 970                                 error(h,"Should not happen :1: XmlSchemaElement.Read, name="+reader.Name,null);\r
 971                                 reader.Skip();\r
 972                                 return null;\r
 973                         }\r
 974 \r
 975                         element.LineNumber = reader.LineNumber;\r
 976                         element.LinePosition = reader.LinePosition;\r
 977                         element.SourceUri = reader.BaseURI;\r
 978 \r
 979                         while(reader.MoveToNextAttribute())\r
 980                         {\r
 981                                 if(reader.Name == "abstract")\r
 982                                 {\r
 983                                         element.IsAbstract = XmlSchemaUtil.ReadBoolAttribute(reader,out innerex);\r
 984                                         if(innerex != null)\r
 985                                                 error(h,reader.Value + " is invalid value for abstract",innerex);\r
 986                                 }\r
 987                                 else if(reader.Name == "block")\r
 988                                 {\r
 989                                         element.block = XmlSchemaUtil.ReadDerivationAttribute(reader,out innerex, "block",\r
 990                                                 XmlSchemaUtil.ElementBlockAllowed);\r
 991                                         if(innerex != null)\r
 992                                                 error (h,"some invalid values for block attribute were found",innerex);\r
 993                                 }\r
 994                                 else if(reader.Name == "default")\r
 995                                 {\r
 996                                         element.defaultValue = reader.Value;\r
 997                                 }\r
 998                                 else if(reader.Name == "final")\r
 999                                 {\r
1000                                         element.Final = XmlSchemaUtil.ReadDerivationAttribute(reader,out innerex, "final",\r
1001                                                 XmlSchemaUtil.FinalAllowed);\r
1002                                         if(innerex != null)\r
1003                                                 error (h,"some invalid values for final attribute were found",innerex);\r
1004                                 }\r
1005                                 else if(reader.Name == "fixed")\r
1006                                 {\r
1007                                         element.fixedValue = reader.Value;\r
1008                                 }\r
1009                                 else if(reader.Name == "form")\r
1010                                 {\r
1011                                         element.form = XmlSchemaUtil.ReadFormAttribute(reader,out innerex);\r
1012                                         if(innerex != null)\r
1013                                                 error(h,reader.Value + " is an invalid value for form attribute",innerex);\r
1014                                 }\r
1015                                 else if(reader.Name == "id")\r
1016                                 {\r
1017                                         element.Id = reader.Value;\r
1018                                 }\r
1019                                 else if(reader.Name == "maxOccurs")\r
1020                                 {\r
1021                                         try\r
1022                                         {\r
1023                                                 element.MaxOccursString = reader.Value;\r
1024                                         }\r
1025                                         catch(Exception e)\r
1026                                         {\r
1027                                                 error(h,reader.Value + " is an invalid value for maxOccurs",e);\r
1028                                         }\r
1029                                 }\r
1030                                 else if(reader.Name == "minOccurs")\r
1031                                 {\r
1032                                         try\r
1033                                         {\r
1034                                                 element.MinOccursString = reader.Value;\r
1035                                         }\r
1036                                         catch(Exception e)\r
1037                                         {\r
1038                                                 error(h,reader.Value + " is an invalid value for minOccurs",e);\r
1039                                         }\r
1040                                 }\r
1041                                 else if(reader.Name == "name")\r
1042                                 {\r
1043                                         element.Name = reader.Value;\r
1044                                 }\r
1045                                 else if(reader.Name == "nillable")\r
1046                                 {\r
1047                                         element.IsNillable = XmlSchemaUtil.ReadBoolAttribute(reader,out innerex);\r
1048                                         if(innerex != null)\r
1049                                                 error(h,reader.Value + "is not a valid value for nillable",innerex);\r
1050                                 }\r
1051                                 else if(reader.Name == "ref")\r
1052                                 {\r
1053                                         element.refName = XmlSchemaUtil.ReadQNameAttribute(reader,out innerex);\r
1054                                         if(innerex != null)\r
1055                                                 error(h, reader.Value + " is not a valid value for ref attribute",innerex);\r
1056                                 }\r
1057                                 else if(reader.Name == "substitutionGroup")\r
1058                                 {\r
1059                                         element.substitutionGroup = XmlSchemaUtil.ReadQNameAttribute(reader,out innerex);\r
1060                                         if(innerex != null)\r
1061                                                 error(h, reader.Value + " is not a valid value for substitutionGroup attribute",innerex);\r
1062                                 }\r
1063                                 else if(reader.Name == "type")\r
1064                                 {\r
1065                                         element.SchemaTypeName = XmlSchemaUtil.ReadQNameAttribute(reader,out innerex);\r
1066                                         if(innerex != null)\r
1067                                                 error(h, reader.Value + " is not a valid value for type attribute",innerex);\r
1068                                 }\r
1069                                 else if((reader.NamespaceURI == "" && reader.Name != "xmlns") || reader.NamespaceURI == XmlSchema.Namespace)\r
1070                                 {\r
1071                                         error(h,reader.Name + " is not a valid attribute for element",null);\r
1072                                 }\r
1073                                 else\r
1074                                 {\r
1075                                         XmlSchemaUtil.ReadUnhandledAttribute(reader,element);\r
1076                                 }\r
1077                         }\r
1078                         \r
1079                         reader.MoveToElement();\r
1080                         if(reader.IsEmptyElement)\r
1081                                 return element;\r
1082 \r
1083                         //  Content: annotation?, \r
1084                         //                      (simpleType | complexType)?, \r
1085                         //                      (unique | key | keyref)*\r
1086                         int level = 1;\r
1087                         while(reader.ReadNextElement())\r
1088                         {\r
1089                                 if(reader.NodeType == XmlNodeType.EndElement)\r
1090                                 {\r
1091                                         if(reader.LocalName != xmlname)\r
1092                                                 error(h,"Should not happen :2: XmlSchemaElement.Read, name="+reader.Name,null);\r
1093                                         break;\r
1094                                 }\r
1095                                 if(level <= 1 && reader.LocalName == "annotation")\r
1096                                 {\r
1097                                         level = 2; //Only one annotation\r
1098                                         XmlSchemaAnnotation annotation = XmlSchemaAnnotation.Read(reader,h);\r
1099                                         if(annotation != null)\r
1100                                                 element.Annotation = annotation;\r
1101                                         continue;\r
1102                                 }\r
1103                                 if(level <= 2)\r
1104                                 {\r
1105                                         if(reader.LocalName == "simpleType")\r
1106                                         {\r
1107                                                 level = 3;\r
1108                                                 XmlSchemaSimpleType simple = XmlSchemaSimpleType.Read(reader,h);\r
1109                                                 if(simple != null)\r
1110                                                         element.SchemaType = simple;\r
1111                                                 continue;\r
1112                                         }\r
1113                                         if(reader.LocalName == "complexType")\r
1114                                         {\r
1115                                                 level = 3;\r
1116                                                 XmlSchemaComplexType complex = XmlSchemaComplexType.Read(reader,h);\r
1117                                                 if(complex != null)\r
1118                                                 {\r
1119                                                         element.SchemaType = complex;\r
1120                                                 }\r
1121                                                 continue;\r
1122                                         }\r
1123                                 }\r
1124                                 if(level <= 3)\r
1125                                 {\r
1126                                         if(reader.LocalName == "unique")\r
1127                                         {\r
1128                                                 level = 3;\r
1129                                                 XmlSchemaUnique unique = XmlSchemaUnique.Read(reader,h);\r
1130                                                 if(unique != null)\r
1131                                                         element.constraints.Add(unique);\r
1132                                                 continue;\r
1133                                         }\r
1134                                         else if(reader.LocalName == "key")\r
1135                                         {\r
1136                                                 level = 3;\r
1137                                                 XmlSchemaKey key = XmlSchemaKey.Read(reader,h);\r
1138                                                 if(key != null)\r
1139                                                         element.constraints.Add(key);\r
1140                                                 continue;\r
1141                                         }\r
1142                                         else if(reader.LocalName == "keyref")\r
1143                                         {\r
1144                                                 level = 3;\r
1145                                                 XmlSchemaKeyref keyref = XmlSchemaKeyref.Read(reader,h);\r
1146                                                 if(keyref != null)\r
1147                                                         element.constraints.Add(keyref);\r
1148                                                 continue;\r
1149                                         }\r
1150                                 }\r
1151                                 reader.RaiseInvalidElementError();\r
1152                         }\r
1153                         return element;\r
1154                 }\r
1155         }\r
1156 }\r