mcs/tools/wsdl/SampleGenerator.cs

   1 //
   2 // SampleGenerator.cs
   3 //
   4 // Author:
   5 //   Lluis Sanchez Gual (lluis@ximian.com)
   6 //
   7 // Copyright (C) 2004 Novel Inc.
   8 //
   9
  10 using System;
  11 using System.IO;
  12 using System.Text;
  13 using System.Collections;
  14 using System.Web.Services.Description;
  15 using System.Xml;
  16 using System.Xml.Schema;
  17 using System.Xml.Serialization;
  18
  19 namespace Mono.WebServices
  20 {
  21         public class ConsoleSampleGenerator: SampleGenerator
  22         {
  23                 public ConsoleSampleGenerator (ServiceDescriptionCollection services, XmlSchemas schemas)
  24                 : base (services, schemas)
  25                 {
  26                 }
  27
  28                 public static void Generate (ArrayList services, ArrayList schemas, string binOper, string protocol)
  29                 {
  30                         ServiceDescriptionCollection descCol = new ServiceDescriptionCollection ();
  31                         foreach (ServiceDescription sd in services)
  32                                 descCol.Add (sd);
  33
  34                         XmlSchemas schemaCol;
  35
  36                         if (schemas.Count > 0) {
  37                                 schemaCol = new XmlSchemas ();
  38                                 foreach (XmlSchema sc in schemas)
  39                                         schemaCol.Add (sc);
  40                         }
  41                         else
  42                                 schemaCol = descCol[0].Types.Schemas;
  43
  44                         string oper, bin = null;
  45
  46                         int i = binOper.IndexOf ('/');
  47                         if (i != -1) {
  48                                 oper = binOper.Substring (i+1);
  49                                 bin = binOper.Substring (0,i);
  50                         }
  51                         else
  52                                 oper = binOper;
  53
  54                         ConsoleSampleGenerator sg = new ConsoleSampleGenerator (descCol, schemaCol);
  55
  56                         string req, resp;
  57                         sg.GenerateMessages (oper, bin, protocol, out req, out resp);
  58
  59                         Console.WriteLine ();
  60                         Console.WriteLine ("Sample request message:");
  61                         Console.WriteLine ();
  62                         Console.WriteLine (req);
  63                         Console.WriteLine ();
  64                         Console.WriteLine ("Sample response message:");
  65                         Console.WriteLine ();
  66                         Console.WriteLine (resp);
  67                 }
  68
  69                 public void GenerateMessages (string operation, string bindingName, string protocol, out string req, out string resp)
  70                 {
  71                         Port port = FindPort (bindingName, protocol);
  72                         Binding binding = descriptions.GetBinding (port.Binding);
  73                         if (binding == null) throw new InvalidOperationException ("Binding " + bindingName + " not found");
  74
  75                         PortType portType = descriptions.GetPortType (binding.Type);
  76                         Operation oper = FindOperation (portType, operation);
  77                         if (oper == null) throw new InvalidOperationException ("Operation " + operation + " not found");
  78                         OperationBinding obin = FindOperation (binding, operation);
  79
  80                         req = GenerateMessage (port, obin, oper, protocol, true);
  81                         resp = GenerateMessage (port, obin, oper, protocol, false);
  82                 }
  83
  84                 Port FindPort (string portName, string protocol)
  85                 {
  86                         Service service = descriptions[0].Services[0];
  87                         foreach (Port port in service.Ports)
  88                         {
  89                                 if (portName == null)
  90                                 {
  91                                         Binding binding = descriptions.GetBinding (port.Binding);
  92                                         if (GetProtocol (binding) == protocol) return port;
  93                                 }
  94                                 else if (port.Name == portName)
  95                                         return port;
  96                         }
  97                         return null;
  98                 }
  99
 100                 string GetProtocol (Binding binding)
 101                 {
 102                         if (binding.Extensions.Find (typeof(SoapBinding)) != null) return "Soap";
 103                         HttpBinding hb = (HttpBinding) binding.Extensions.Find (typeof(HttpBinding));
 104                         if (hb == null) return "";
 105                         if (hb.Verb == "POST") return "HttpPost";
 106                         if (hb.Verb == "GET") return "HttpGet";
 107                         return "";
 108                 }
 109
 110                 Operation FindOperation (PortType portType, string name)
 111                 {
 112                         foreach (Operation oper in portType.Operations) {
 113                                 if (oper.Messages.Input.Name != null) {
 114                                         if (oper.Messages.Input.Name == name) return oper;
 115                                 }
 116                                 else
 117                                         if (oper.Name == name) return oper;
 118                         }
 119
 120                         return null;
 121                 }
 122
 123                 OperationBinding FindOperation (Binding binding, string name)
 124                 {
 125                         foreach (OperationBinding oper in binding.Operations) {
 126                                 if (oper.Input.Name != null) {
 127                                         if (oper.Input.Name == name) return oper;
 128                                 }
 129                                 else
 130                                         if (oper.Name == name) return oper;
 131                         }
 132
 133                         return null;
 134                 }
 135         }
 136
 137         //
 138         // Sample generator class
 139         //
 140
 141         public class SampleGenerator
 142         {
 143                 protected ServiceDescriptionCollection descriptions;
 144                 protected XmlSchemas schemas;
 145                 XmlSchemaElement anyElement;
 146                 ArrayList queue;
 147                 SoapBindingUse currentUse;
 148                 XmlDocument document = new XmlDocument ();
 149
 150                 static readonly XmlQualifiedName anyType = new XmlQualifiedName ("anyType",XmlSchema.Namespace);
 151                 static readonly XmlQualifiedName arrayType = new XmlQualifiedName ("Array","http://schemas.xmlsoap.org/soap/encoding/");
 152                 static readonly XmlQualifiedName arrayTypeRefName = new XmlQualifiedName ("arrayType","http://schemas.xmlsoap.org/soap/encoding/");
 153                 const string SoapEnvelopeNamespace = "http://schemas.xmlsoap.org/soap/envelope/";
 154                 const string WsdlNamespace = "http://schemas.xmlsoap.org/wsdl/";
 155                 const string SoapEncodingNamespace = "http://schemas.xmlsoap.org/soap/encoding/";
 156
 157                 class EncodedType
 158                 {
 159                         public EncodedType (string ns, XmlSchemaElement elem) { Namespace = ns; Element = elem; }
 160                         public string Namespace;
 161                         public XmlSchemaElement Element;
 162                 }
 163
 164                 public SampleGenerator (ServiceDescriptionCollection services, XmlSchemas schemas)
 165                 {
 166                         descriptions = services;
 167                         this.schemas = schemas;
 168                         queue = new ArrayList ();
 169                 }
 170
 171                 public string GenerateMessage (Port port, OperationBinding obin, Operation oper, string protocol, bool generateInput)
 172                 {
 173                         OperationMessage msg = null;
 174                         foreach (OperationMessage opm in oper.Messages)
 175                         {
 176                                 if (opm is OperationInput && generateInput) msg = opm;
 177                                 else if (opm is OperationOutput && !generateInput) msg = opm;
 178                         }
 179                         if (msg == null) return null;
 180
 181                         switch (protocol) {
 182                                 case "Soap": return GenerateHttpSoapMessage (port, obin, oper, msg);
 183                                 case "HttpGet": return GenerateHttpGetMessage (port, obin, oper, msg);
 184                                 case "HttpPost": return GenerateHttpPostMessage (port, obin, oper, msg);
 185                         }
 186                         return "Unknown protocol";
 187                 }
 188
 189                 public string GenerateHttpSoapMessage (Port port, OperationBinding obin, Operation oper, OperationMessage msg)
 190                 {
 191                         string req = "";
 192
 193                         if (msg is OperationInput)
 194                         {
 195                                 SoapAddressBinding sab = port.Extensions.Find (typeof(SoapAddressBinding)) as SoapAddressBinding;
 196                                 SoapOperationBinding sob = obin.Extensions.Find (typeof(SoapOperationBinding)) as SoapOperationBinding;
 197                                 req += "POST " + new Uri (sab.Location).AbsolutePath + "\n";
 198                                 req += "SOAPAction: " + sob.SoapAction + "\n";
 199                                 req += "Content-Type: text/xml; charset=utf-8\n";
 200                                 req += "Content-Length: " + GetLiteral ("string") + "\n";
 201                                 req += "Host: " + GetLiteral ("string") + "\n\n";
 202                         }
 203                         else
 204                         {
 205                                 req += "HTTP/1.0 200 OK\n";
 206                                 req += "Content-Type: text/xml; charset=utf-8\n";
 207                                 req += "Content-Length: " + GetLiteral ("string") + "\n\n";
 208                         }
 209
 210                         req += GenerateSoapMessage (obin, oper, msg);
 211                         return req;
 212                 }
 213
 214                 public string GenerateHttpGetMessage (Port port, OperationBinding obin, Operation oper, OperationMessage msg)
 215                 {
 216                         string req = "";
 217
 218                         if (msg is OperationInput)
 219                         {
 220                                 HttpAddressBinding sab = port.Extensions.Find (typeof(HttpAddressBinding)) as HttpAddressBinding;
 221                                 HttpOperationBinding sob = obin.Extensions.Find (typeof(HttpOperationBinding)) as HttpOperationBinding;
 222                                 string location = new Uri (sab.Location).AbsolutePath + sob.Location + "?" + BuildQueryString (msg);
 223                                 req += "GET " + location + "\n";
 224                                 req += "Host: " + GetLiteral ("string");
 225                         }
 226                         else
 227                         {
 228                                 req += "HTTP/1.0 200 OK\n";
 229                                 req += "Content-Type: text/xml; charset=utf-8\n";
 230                                 req += "Content-Length: " + GetLiteral ("string") + "\n\n";
 231
 232                                 MimeXmlBinding mxb = (MimeXmlBinding) obin.Output.Extensions.Find (typeof(MimeXmlBinding)) as MimeXmlBinding;
 233                                 if (mxb == null) return req;
 234
 235                                 Message message = descriptions.GetMessage (msg.Message);
 236                                 XmlQualifiedName ename = null;
 237                                 foreach (MessagePart part in message.Parts)
 238                                         if (part.Name == mxb.Part) ename = part.Element;
 239
 240                                 if (ename == null) return req + GetLiteral("string");
 241
 242                                 StringWriter sw = new StringWriter ();
 243                                 XmlTextWriter xtw = new XmlTextWriter (sw);
 244                                 xtw.Formatting = Formatting.Indented;
 245                                 currentUse = SoapBindingUse.Literal;
 246                                 WriteRootElementSample (xtw, ename);
 247                                 xtw.Close ();
 248                                 req += sw.ToString ();
 249                         }
 250
 251                         return req;
 252                 }
 253
 254                 public string GenerateHttpPostMessage (Port port, OperationBinding obin, Operation oper, OperationMessage msg)
 255                 {
 256                         string req = "";
 257
 258                         if (msg is OperationInput)
 259                         {
 260                                 HttpAddressBinding sab = port.Extensions.Find (typeof(HttpAddressBinding)) as HttpAddressBinding;
 261                                 HttpOperationBinding sob = obin.Extensions.Find (typeof(HttpOperationBinding)) as HttpOperationBinding;
 262                                 string location = new Uri (sab.Location).AbsolutePath + sob.Location;
 263                                 req += "POST " + location + "\n";
 264                                 req += "Content-Type: application/x-www-form-urlencoded\n";
 265                                 req += "Content-Length: " + GetLiteral ("string") + "\n";
 266                                 req += "Host: " + GetLiteral ("string") + "\n\n";
 267                                 req += BuildQueryString (msg);
 268                         }
 269                         else return GenerateHttpGetMessage (port, obin, oper, msg);
 270
 271                         return req;
 272                 }
 273
 274                 string BuildQueryString (OperationMessage opm)
 275                 {
 276                         string s = "";
 277                         Message msg = descriptions.GetMessage (opm.Message);
 278                         foreach (MessagePart part in msg.Parts)
 279                         {
 280                                 if (s.Length != 0) s += "&";
 281                                 s += part.Name + "=" + GetLiteral (part.Type.Name);
 282                         }
 283                         return s;
 284                 }
 285
 286                 public string GenerateSoapMessage (OperationBinding obin, Operation oper, OperationMessage msg)
 287                 {
 288                         SoapOperationBinding sob = obin.Extensions.Find (typeof(SoapOperationBinding)) as SoapOperationBinding;
 289                         SoapBindingStyle style = (sob != null) ? sob.Style : SoapBindingStyle.Document;
 290
 291                         MessageBinding msgbin = (msg is OperationInput) ? (MessageBinding) obin.Input : (MessageBinding)obin.Output;
 292                         SoapBodyBinding sbb = msgbin.Extensions.Find (typeof(SoapBodyBinding)) as SoapBodyBinding;
 293                         SoapBindingUse bodyUse = (sbb != null) ? sbb.Use : SoapBindingUse.Literal;
 294
 295                         StringWriter sw = new StringWriter ();
 296                         XmlTextWriter xtw = new XmlTextWriter (sw);
 297                         xtw.Formatting = Formatting.Indented;
 298
 299                         xtw.WriteStartDocument ();
 300                         xtw.WriteStartElement ("soap", "Envelope", SoapEnvelopeNamespace);
 301                         xtw.WriteAttributeString ("xmlns", "xsi", null, XmlSchema.InstanceNamespace);
 302                         xtw.WriteAttributeString ("xmlns", "xsd", null, XmlSchema.Namespace);
 303
 304                         if (bodyUse == SoapBindingUse.Encoded)
 305                         {
 306                                 xtw.WriteAttributeString ("xmlns", "soapenc", null, SoapEncodingNamespace);
 307                                 xtw.WriteAttributeString ("xmlns", "tns", null, msg.Message.Namespace);
 308                         }
 309
 310                         // Serialize headers
 311
 312                         bool writtenHeader = false;
 313                         foreach (object ob in msgbin.Extensions)
 314                         {
 315                                 SoapHeaderBinding hb = ob as SoapHeaderBinding;
 316                                 if (hb == null) continue;
 317
 318                                 if (!writtenHeader) {
 319                                         xtw.WriteStartElement ("soap", "Header", SoapEnvelopeNamespace);
 320                                         writtenHeader = true;
 321                                 }
 322
 323                                 WriteHeader (xtw, hb);
 324                         }
 325
 326                         if (writtenHeader)
 327                                 xtw.WriteEndElement ();
 328
 329                         // Serialize body
 330                         xtw.WriteStartElement ("soap", "Body", SoapEnvelopeNamespace);
 331
 332                         currentUse = bodyUse;
 333                         WriteBody (xtw, oper, msg, sbb, style);
 334
 335                         xtw.WriteEndElement ();
 336                         xtw.WriteEndElement ();
 337                         xtw.Close ();
 338                         return sw.ToString ();
 339                 }
 340
 341                 void WriteHeader (XmlTextWriter xtw, SoapHeaderBinding header)
 342                 {
 343                         Message msg = descriptions.GetMessage (header.Message);
 344                         if (msg == null) throw new InvalidOperationException ("Message " + header.Message + " not found");
 345                         MessagePart part = msg.Parts [header.Part];
 346                         if (part == null) throw new InvalidOperationException ("Message part " + header.Part + " not found in message " + header.Message);
 347
 348                         currentUse = header.Use;
 349
 350                         if (currentUse == SoapBindingUse.Literal)
 351                                 WriteRootElementSample (xtw, part.Element);
 352                         else
 353                                 WriteTypeSample (xtw, part.Type);
 354                 }
 355
 356                 void WriteBody (XmlTextWriter xtw, Operation oper, OperationMessage opm, SoapBodyBinding sbb, SoapBindingStyle style)
 357                 {
 358                         Message msg = descriptions.GetMessage (opm.Message);
 359                         if (msg.Parts.Count > 0 && msg.Parts[0].Name == "parameters")
 360                         {
 361                                 MessagePart part = msg.Parts[0];
 362                                 if (part.Element == XmlQualifiedName.Empty)
 363                                         WriteTypeSample (xtw, part.Type);
 364                                 else
 365                                         WriteRootElementSample (xtw, part.Element);
 366                         }
 367                         else
 368                         {
 369                                 string elemName = oper.Name;
 370                                 string ns = "";
 371                                 if (opm is OperationOutput) elemName += "Response";
 372
 373                                 if (style == SoapBindingStyle.Rpc) {
 374                                         xtw.WriteStartElement (elemName, sbb.Namespace);
 375                                         ns = sbb.Namespace;
 376                                 }
 377
 378                                 foreach (MessagePart part in msg.Parts)
 379                                 {
 380                                         if (part.Element == XmlQualifiedName.Empty)
 381                                         {
 382                                                 XmlSchemaElement elem = new XmlSchemaElement ();
 383                                                 elem.SchemaTypeName = part.Type;
 384                                                 elem.Name = part.Name;
 385                                                 WriteElementSample (xtw, ns, elem);
 386                                         }
 387                                         else
 388                                                 WriteRootElementSample (xtw, part.Element);
 389                                 }
 390
 391                                 if (style == SoapBindingStyle.Rpc)
 392                                         xtw.WriteEndElement ();
 393                         }
 394                         WriteQueuedTypeSamples (xtw);
 395                 }
 396
 397                 void WriteRootElementSample (XmlTextWriter xtw, XmlQualifiedName qname)
 398                 {
 399                         XmlSchemaElement elem = (XmlSchemaElement) schemas.Find (qname, typeof(XmlSchemaElement));
 400                         if (elem == null) throw new InvalidOperationException ("Element not found: " + qname);
 401                         WriteElementSample (xtw, qname.Namespace, elem);
 402                 }
 403
 404                 void WriteElementSample (XmlTextWriter xtw, string ns, XmlSchemaElement elem)
 405                 {
 406                         XmlQualifiedName root;
 407
 408                         if (!elem.RefName.IsEmpty) {
 409                                 XmlSchemaElement refElem = FindRefElement (elem);
 410                                 if (refElem == null) throw new InvalidOperationException ("Global element not found: " + elem.RefName);
 411                                 root = elem.RefName;
 412                                 elem = refElem;
 413                         }
 414                         else
 415                                 root = new XmlQualifiedName (elem.Name, ns);
 416
 417                         if (!elem.SchemaTypeName.IsEmpty)
 418                         {
 419                                 XmlSchemaComplexType st = FindComplexTyype (elem.SchemaTypeName);
 420                                 if (st != null)
 421                                         WriteComplexTypeSample (xtw, st, root);
 422                                 else
 423                                 {
 424                                         xtw.WriteStartElement (root.Name, root.Namespace);
 425                                         if (currentUse == SoapBindingUse.Encoded)
 426                                                 xtw.WriteAttributeString ("type", XmlSchema.InstanceNamespace, GetQualifiedNameString (xtw, elem.SchemaTypeName));
 427                                         xtw.WriteString (GetLiteral (FindBuiltInType (elem.SchemaTypeName)));
 428                                         xtw.WriteEndElement ();
 429                                 }
 430                         }
 431                         else if (elem.SchemaType == null)
 432                         {
 433                                 xtw.WriteStartElement ("any");
 434                                 xtw.WriteEndElement ();
 435                         }
 436                         else
 437                                 WriteComplexTypeSample (xtw, (XmlSchemaComplexType) elem.SchemaType, root);
 438                 }
 439
 440                 void WriteTypeSample (XmlTextWriter xtw, XmlQualifiedName qname)
 441                 {
 442                         XmlSchemaComplexType ctype = FindComplexTyype (qname);
 443                         if (ctype != null) {
 444                                 WriteComplexTypeSample (xtw, ctype, qname);
 445                                 return;
 446                         }
 447
 448                         XmlSchemaSimpleType stype = (XmlSchemaSimpleType) schemas.Find (qname, typeof(XmlSchemaSimpleType));
 449                         if (stype != null) {
 450                                 WriteSimpleTypeSample (xtw, stype);
 451                                 return;
 452                         }
 453
 454                         xtw.WriteString (GetLiteral (FindBuiltInType (qname)));
 455                         throw new InvalidOperationException ("Type not found: " + qname);
 456                 }
 457
 458                 void WriteComplexTypeSample (XmlTextWriter xtw, XmlSchemaComplexType stype, XmlQualifiedName rootName)
 459                 {
 460                         WriteComplexTypeSample (xtw, stype, rootName, -1);
 461                 }
 462
 463                 void WriteComplexTypeSample (XmlTextWriter xtw, XmlSchemaComplexType stype, XmlQualifiedName rootName, int id)
 464                 {
 465                         string ns = rootName.Namespace;
 466
 467                         if (rootName.Name.IndexOf ("[]") != -1) rootName = arrayType;
 468
 469                         if (currentUse == SoapBindingUse.Encoded) {
 470                                 string pref = xtw.LookupPrefix (rootName.Namespace);
 471                                 if (pref == null) pref = "q1";
 472                                 xtw.WriteStartElement (pref, rootName.Name, rootName.Namespace);
 473                                 ns = "";
 474                         }
 475                         else
 476                                 xtw.WriteStartElement (rootName.Name, rootName.Namespace);
 477
 478                         if (id != -1)
 479                         {
 480                                 xtw.WriteAttributeString ("id", "id" + id);
 481                                 if (rootName != arrayType)
 482                                         xtw.WriteAttributeString ("type", XmlSchema.InstanceNamespace, GetQualifiedNameString (xtw, rootName));
 483                         }
 484
 485                         WriteComplexTypeAttributes (xtw, stype);
 486                         WriteComplexTypeElements (xtw, ns, stype);
 487
 488                         xtw.WriteEndElement ();
 489                 }
 490
 491                 void WriteComplexTypeAttributes (XmlTextWriter xtw, XmlSchemaComplexType stype)
 492                 {
 493                         WriteAttributes (xtw, stype.Attributes, stype.AnyAttribute);
 494                 }
 495
 496                 void WriteComplexTypeElements (XmlTextWriter xtw, string ns, XmlSchemaComplexType stype)
 497                 {
 498                         if (stype.Particle != null)
 499                                 WriteParticleComplexContent (xtw, ns, stype.Particle);
 500                         else
 501                         {
 502                                 if (stype.ContentModel is XmlSchemaSimpleContent)
 503                                         WriteSimpleContent (xtw, (XmlSchemaSimpleContent)stype.ContentModel);
 504                                 else if (stype.ContentModel is XmlSchemaComplexContent)
 505                                         WriteComplexContent (xtw, ns, (XmlSchemaComplexContent)stype.ContentModel);
 506                         }
 507                 }
 508
 509                 void WriteAttributes (XmlTextWriter xtw, XmlSchemaObjectCollection atts, XmlSchemaAnyAttribute anyat)
 510                 {
 511                         foreach (XmlSchemaObject at in atts)
 512                         {
 513                                 if (at is XmlSchemaAttribute)
 514                                 {
 515                                         XmlSchemaAttribute attr = (XmlSchemaAttribute)at;
 516                                         XmlSchemaAttribute refAttr = attr;
 517
 518                                         // refAttr.Form; TODO
 519
 520                                         if (!attr.RefName.IsEmpty) {
 521                                                 refAttr = FindRefAttribute (attr.RefName);
 522                                                 if (refAttr == null) throw new InvalidOperationException ("Global attribute not found: " + attr.RefName);
 523                                         }
 524
 525                                         string val;
 526                                         if (!refAttr.SchemaTypeName.IsEmpty) val = FindBuiltInType (refAttr.SchemaTypeName);
 527                                         else val = FindBuiltInType ((XmlSchemaSimpleType) refAttr.SchemaType);
 528
 529                                         xtw.WriteAttributeString (refAttr.Name, val);
 530                                 }
 531                                 else if (at is XmlSchemaAttributeGroupRef)
 532                                 {
 533                                         XmlSchemaAttributeGroupRef gref = (XmlSchemaAttributeGroupRef)at;
 534                                         XmlSchemaAttributeGroup grp = (XmlSchemaAttributeGroup) schemas.Find (gref.RefName, typeof(XmlSchemaAttributeGroup));
 535                                         WriteAttributes (xtw, grp.Attributes, grp.AnyAttribute);
 536                                 }
 537                         }
 538
 539                         if (anyat != null)
 540                                 xtw.WriteAttributeString ("custom-attribute","value");
 541                 }
 542
 543                 void WriteParticleComplexContent (XmlTextWriter xtw, string ns, XmlSchemaParticle particle)
 544                 {
 545                         WriteParticleContent (xtw, ns, particle, false);
 546                 }
 547
 548                 void WriteParticleContent (XmlTextWriter xtw, string ns, XmlSchemaParticle particle, bool multiValue)
 549                 {
 550                         if (particle is XmlSchemaGroupRef)
 551                                 particle = GetRefGroupParticle ((XmlSchemaGroupRef)particle);
 552
 553                         if (particle.MaxOccurs > 1) multiValue = true;
 554
 555                         if (particle is XmlSchemaSequence) {
 556                                 WriteSequenceContent (xtw, ns, ((XmlSchemaSequence)particle).Items, multiValue);
 557                         }
 558                         else if (particle is XmlSchemaChoice) {
 559                                 if (((XmlSchemaChoice)particle).Items.Count == 1)
 560                                         WriteSequenceContent (xtw, ns, ((XmlSchemaChoice)particle).Items, multiValue);
 561                                 else
 562                                         WriteChoiceContent (xtw, ns, (XmlSchemaChoice)particle, multiValue);
 563                         }
 564                         else if (particle is XmlSchemaAll) {
 565                                 WriteSequenceContent (xtw, ns, ((XmlSchemaAll)particle).Items, multiValue);
 566                         }
 567                 }
 568
 569                 void WriteSequenceContent (XmlTextWriter xtw, string ns, XmlSchemaObjectCollection items, bool multiValue)
 570                 {
 571                         foreach (XmlSchemaObject item in items)
 572                                 WriteContentItem (xtw, ns, item, multiValue);
 573                 }
 574
 575                 void WriteContentItem (XmlTextWriter xtw, string ns, XmlSchemaObject item, bool multiValue)
 576                 {
 577                         if (item is XmlSchemaGroupRef)
 578                                 item = GetRefGroupParticle ((XmlSchemaGroupRef)item);
 579
 580                         if (item is XmlSchemaElement)
 581                         {
 582                                 XmlSchemaElement elem = (XmlSchemaElement) item;
 583                                 XmlSchemaElement refElem;
 584                                 if (!elem.RefName.IsEmpty) refElem = FindRefElement (elem);
 585                                 else refElem = elem;
 586
 587                                 int num = (elem.MaxOccurs == 1 && !multiValue) ? 1 : 2;
 588                                 for (int n=0; n<num; n++)
 589                                 {
 590                                         if (currentUse == SoapBindingUse.Literal)
 591                                                 WriteElementSample (xtw, ns, refElem);
 592                                         else
 593                                                 WriteRefTypeSample (xtw, ns, refElem);
 594                                 }
 595                         }
 596                         else if (item is XmlSchemaAny)
 597                         {
 598                                 xtw.WriteString (GetLiteral ("xml"));
 599                         }
 600                         else if (item is XmlSchemaParticle) {
 601                                 WriteParticleContent (xtw, ns, (XmlSchemaParticle)item, multiValue);
 602                         }
 603                 }
 604
 605                 void WriteChoiceContent (XmlTextWriter xtw, string ns, XmlSchemaChoice choice, bool multiValue)
 606                 {
 607                         foreach (XmlSchemaObject item in choice.Items)
 608                                 WriteContentItem (xtw, ns, item, multiValue);
 609                 }
 610
 611                 void WriteSimpleContent (XmlTextWriter xtw, XmlSchemaSimpleContent content)
 612                 {
 613                         XmlSchemaSimpleContentExtension ext = content.Content as XmlSchemaSimpleContentExtension;
 614                         if (ext != null)
 615                                 WriteAttributes (xtw, ext.Attributes, ext.AnyAttribute);
 616
 617                         XmlQualifiedName qname = GetContentBaseType (content.Content);
 618                         xtw.WriteString (GetLiteral (FindBuiltInType (qname)));
 619                 }
 620
 621                 string FindBuiltInType (XmlQualifiedName qname)
 622                 {
 623                         if (qname.Namespace == XmlSchema.Namespace)
 624                                 return qname.Name;
 625
 626                         XmlSchemaComplexType ct = FindComplexTyype (qname);
 627                         if (ct != null)
 628                         {
 629                                 XmlSchemaSimpleContent sc = ct.ContentModel as XmlSchemaSimpleContent;
 630                                 if (sc == null) throw new InvalidOperationException ("Invalid schema");
 631                                 return FindBuiltInType (GetContentBaseType (sc.Content));
 632                         }
 633
 634                         XmlSchemaSimpleType st = (XmlSchemaSimpleType) schemas.Find (qname, typeof(XmlSchemaSimpleType));
 635                         if (st != null)
 636                                 return FindBuiltInType (st);
 637
 638                         throw new InvalidOperationException ("Definition of type " + qname + " not found");
 639                 }
 640
 641                 string FindBuiltInType (XmlSchemaSimpleType st)
 642                 {
 643                         if (st.Content is XmlSchemaSimpleTypeRestriction) {
 644                                 return FindBuiltInType (GetContentBaseType (st.Content));
 645                         }
 646                         else if (st.Content is XmlSchemaSimpleTypeList) {
 647                                 string s = FindBuiltInType (GetContentBaseType (st.Content));
 648                                 return s + " " + s + " ...";
 649                         }
 650                         else if (st.Content is XmlSchemaSimpleTypeUnion)
 651                         {
 652                                 // Check if all types of the union are equal. If not, then will use anyType.
 653                                 XmlSchemaSimpleTypeUnion uni = (XmlSchemaSimpleTypeUnion) st.Content;
 654                                 string utype = null;
 655
 656                                 // Anonymous types are unique
 657                                 if (uni.BaseTypes.Count != 0 && uni.MemberTypes.Length != 0)
 658                                         return "string";
 659
 660                                 foreach (XmlQualifiedName mt in uni.MemberTypes)
 661                                 {
 662                                         string qn = FindBuiltInType (mt);
 663                                         if (utype != null && qn != utype) return "string";
 664                                         else utype = qn;
 665                                 }
 666                                 return utype;
 667                         }
 668                         else
 669                                 return "string";
 670                 }
 671
 672
 673                 XmlQualifiedName GetContentBaseType (XmlSchemaObject ob)
 674                 {
 675                         if (ob is XmlSchemaSimpleContentExtension)
 676                                 return ((XmlSchemaSimpleContentExtension)ob).BaseTypeName;
 677                         else if (ob is XmlSchemaSimpleContentRestriction)
 678                                 return ((XmlSchemaSimpleContentRestriction)ob).BaseTypeName;
 679                         else if (ob is XmlSchemaSimpleTypeRestriction)
 680                                 return ((XmlSchemaSimpleTypeRestriction)ob).BaseTypeName;
 681                         else if (ob is XmlSchemaSimpleTypeList)
 682                                 return ((XmlSchemaSimpleTypeList)ob).ItemTypeName;
 683                         else
 684                                 return null;
 685                 }
 686
 687                 void WriteComplexContent (XmlTextWriter xtw, string ns, XmlSchemaComplexContent content)
 688                 {
 689                         XmlQualifiedName qname;
 690
 691                         XmlSchemaComplexContentExtension ext = content.Content as XmlSchemaComplexContentExtension;
 692                         if (ext != null) qname = ext.BaseTypeName;
 693                         else {
 694                                 XmlSchemaComplexContentRestriction rest = (XmlSchemaComplexContentRestriction)content.Content;
 695                                 qname = rest.BaseTypeName;
 696                                 if (qname == arrayType) {
 697                                         ParseArrayType (rest, out qname);
 698                                         XmlSchemaElement elem = new XmlSchemaElement ();
 699                                         elem.Name = "Item";
 700                                         elem.SchemaTypeName = qname;
 701
 702                                         xtw.WriteAttributeString ("arrayType", SoapEncodingNamespace, qname.Name + "[2]");
 703                                         WriteContentItem (xtw, ns, elem, true);
 704                                         return;
 705                                 }
 706                         }
 707
 708                         // Add base map members to this map
 709                         XmlSchemaComplexType ctype = FindComplexTyype (qname);
 710                         WriteComplexTypeAttributes (xtw, ctype);
 711
 712                         if (ext != null) {
 713                                 // Add the members of this map
 714                                 WriteAttributes (xtw, ext.Attributes, ext.AnyAttribute);
 715                                 if (ext.Particle != null)
 716                                         WriteParticleComplexContent (xtw, ns, ext.Particle);
 717                         }
 718
 719                         WriteComplexTypeElements (xtw, ns, ctype);
 720                 }
 721
 722                 void ParseArrayType (XmlSchemaComplexContentRestriction rest, out XmlQualifiedName qtype)
 723                 {
 724                         XmlSchemaAttribute arrayTypeAt = FindArrayAttribute (rest.Attributes);
 725                         XmlAttribute[] uatts = arrayTypeAt.UnhandledAttributes;
 726                         if (uatts == null || uatts.Length == 0) throw new InvalidOperationException ("arrayType attribute not specified in array declaration");
 727
 728                         XmlAttribute xat = null;
 729                         foreach (XmlAttribute at in uatts)
 730                                 if (at.LocalName == "arrayType" && at.NamespaceURI == WsdlNamespace)
 731                                         { xat = at; break; }
 732
 733                         if (xat == null)
 734                                 throw new InvalidOperationException ("arrayType attribute not specified in array declaration");
 735
 736                         string arrayType = xat.Value;
 737                         string type, ns;
 738                         int i = arrayType.LastIndexOf (":");
 739                         if (i == -1) ns = "";
 740                         else ns = arrayType.Substring (0,i);
 741
 742                         int j = arrayType.IndexOf ("[", i+1);
 743                         if (j == -1) throw new InvalidOperationException ("Cannot parse WSDL array type: " + arrayType);
 744                         type = arrayType.Substring (i+1);
 745                         type = type.Substring (0, type.Length-2);
 746
 747                         qtype = new XmlQualifiedName (type, ns);
 748                 }
 749
 750                 XmlSchemaAttribute FindArrayAttribute (XmlSchemaObjectCollection atts)
 751                 {
 752                         foreach (object ob in atts)
 753                         {
 754                                 XmlSchemaAttribute att = ob as XmlSchemaAttribute;
 755                                 if (att != null && att.RefName == arrayTypeRefName) return att;
 756
 757                                 XmlSchemaAttributeGroupRef gref = ob as XmlSchemaAttributeGroupRef;
 758                                 if (gref != null)
 759                                 {
 760                                         XmlSchemaAttributeGroup grp = (XmlSchemaAttributeGroup) schemas.Find (gref.RefName, typeof(XmlSchemaAttributeGroup));
 761                                         att = FindArrayAttribute (grp.Attributes);
 762                                         if (att != null) return att;
 763                                 }
 764                         }
 765                         return null;
 766                 }
 767
 768                 void WriteSimpleTypeSample (XmlTextWriter xtw, XmlSchemaSimpleType stype)
 769                 {
 770                         xtw.WriteString (GetLiteral (FindBuiltInType (stype)));
 771                 }
 772
 773                 XmlSchemaParticle GetRefGroupParticle (XmlSchemaGroupRef refGroup)
 774                 {
 775                         XmlSchemaGroup grp = (XmlSchemaGroup) schemas.Find (refGroup.RefName, typeof (XmlSchemaGroup));
 776                         return grp.Particle;
 777                 }
 778
 779                 XmlSchemaElement FindRefElement (XmlSchemaElement elem)
 780                 {
 781                         if (elem.RefName.Namespace == XmlSchema.Namespace)
 782                         {
 783                                 if (anyElement != null) return anyElement;
 784                                 anyElement = new XmlSchemaElement ();
 785                                 anyElement.Name = "any";
 786                                 anyElement.SchemaTypeName = anyType;
 787                                 return anyElement;
 788                         }
 789                         return (XmlSchemaElement) schemas.Find (elem.RefName, typeof(XmlSchemaElement));
 790                 }
 791
 792                 XmlSchemaAttribute FindRefAttribute (XmlQualifiedName refName)
 793                 {
 794                         if (refName.Namespace == XmlSchema.Namespace)
 795                         {
 796                                 XmlSchemaAttribute at = new XmlSchemaAttribute ();
 797                                 at.Name = refName.Name;
 798                                 at.SchemaTypeName = new XmlQualifiedName ("string",XmlSchema.Namespace);
 799                                 return at;
 800                         }
 801                         return (XmlSchemaAttribute) schemas.Find (refName, typeof(XmlSchemaAttribute));
 802                 }
 803
 804                 void WriteRefTypeSample (XmlTextWriter xtw, string ns, XmlSchemaElement elem)
 805                 {
 806                         if (elem.SchemaTypeName.Namespace == XmlSchema.Namespace || schemas.Find (elem.SchemaTypeName, typeof(XmlSchemaSimpleType)) != null)
 807                                 WriteElementSample (xtw, ns, elem);
 808                         else
 809                         {
 810                                 xtw.WriteStartElement (elem.Name, ns);
 811                                 xtw.WriteAttributeString ("href", "#id" + (queue.Count+1));
 812                                 xtw.WriteEndElement ();
 813                                 queue.Add (new EncodedType (ns, elem));
 814                         }
 815                 }
 816
 817                 void WriteQueuedTypeSamples (XmlTextWriter xtw)
 818                 {
 819                         for (int n=0; n<queue.Count; n++)
 820                         {
 821                                 EncodedType ec = (EncodedType) queue[n];
 822                                 XmlSchemaComplexType st = FindComplexTyype (ec.Element.SchemaTypeName);
 823                                 WriteComplexTypeSample (xtw, st, ec.Element.SchemaTypeName, n+1);
 824                         }
 825                 }
 826
 827                 XmlSchemaComplexType FindComplexTyype (XmlQualifiedName qname)
 828                 {
 829                         if (qname.Name.IndexOf ("[]") != -1)
 830                         {
 831                                 XmlSchemaComplexType stype = new XmlSchemaComplexType ();
 832                                 stype.ContentModel = new XmlSchemaComplexContent ();
 833
 834                                 XmlSchemaComplexContentRestriction res = new XmlSchemaComplexContentRestriction ();
 835                                 stype.ContentModel.Content = res;
 836                                 res.BaseTypeName = arrayType;
 837
 838                                 XmlSchemaAttribute att = new XmlSchemaAttribute ();
 839                                 att.RefName = arrayTypeRefName;
 840                                 res.Attributes.Add (att);
 841
 842                                 XmlAttribute xat = document.CreateAttribute ("arrayType", WsdlNamespace);
 843                                 xat.Value = qname.Namespace + ":" + qname.Name;
 844                                 att.UnhandledAttributes = new XmlAttribute[] {xat};
 845                                 return stype;
 846                         }
 847
 848                         return (XmlSchemaComplexType) schemas.Find (qname, typeof(XmlSchemaComplexType));
 849                 }
 850
 851                 string GetQualifiedNameString (XmlTextWriter xtw, XmlQualifiedName qname)
 852                 {
 853                         string pref = xtw.LookupPrefix (qname.Namespace);
 854                         if (pref != null) return pref + ":" + qname.Name;
 855
 856                         xtw.WriteAttributeString ("xmlns", "q1", null, qname.Namespace);
 857                         return "q1:" + qname.Name;
 858                 }
 859
 860                 protected virtual string GetLiteral (string s)
 861                 {
 862                         return s;
 863                 }
 864         }
 865
 866
 867
 868 }
 869