mcs/class/System.Web.Services/System.Web.Services.Description/HttpSimpleProtocolImporter.cs

   1 //
   2 // System.Web.Services.Description.HttpSimpleProtocolImporter.cs
   3 //
   4 // Author:
   5 //   Lluis Sanchez Gual (lluis@ximian.com)
   6 //
   7 // Copyright (C) 2003 Ximian, Inc.
   8 //
   9
  10 //
  11 // Permission is hereby granted, free of charge, to any person obtaining
  12 // a copy of this software and associated documentation files (the
  13 // "Software"), to deal in the Software without restriction, including
  14 // without limitation the rights to use, copy, modify, merge, publish,
  15 // distribute, sublicense, and/or sell copies of the Software, and to
  16 // permit persons to whom the Software is furnished to do so, subject to
  17 // the following conditions:
  18 //
  19 // The above copyright notice and this permission notice shall be
  20 // included in all copies or substantial portions of the Software.
  21 //
  22 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  23 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  24 // MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  25 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
  26 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  27 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  28 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  29 //
  30
  31 using System.CodeDom;
  32 using System.Web.Services;
  33 using System.Web.Services.Protocols;
  34 using System.Web.Services.Configuration;
  35 using System.Xml;
  36 using System.Xml.Serialization;
  37 using System.Configuration;
  38 using System.Collections;
  39
  40 namespace System.Web.Services.Description
  41 {
  42         internal abstract class HttpSimpleProtocolImporter : ProtocolImporter
  43         {
  44
  45                 #region Fields
  46
  47                 HttpBinding httpBinding;
  48
  49                 SoapCodeExporter soapExporter;
  50                 SoapSchemaImporter soapImporter;
  51                 XmlCodeExporter xmlExporter;
  52                 XmlSchemaImporter xmlImporter;
  53                 CodeIdentifiers memberIds;
  54                 XmlReflectionImporter xmlReflectionImporter;
  55
  56                 #endregion // Fields
  57
  58                 #region Constructors
  59
  60                 public HttpSimpleProtocolImporter ()
  61                 {
  62                 }
  63
  64                 #endregion // Constructors
  65
  66                 #region Methods
  67
  68                 protected override CodeTypeDeclaration BeginClass ()
  69                 {
  70                         httpBinding = (HttpBinding) Binding.Extensions.Find (typeof(HttpBinding));
  71
  72                         CodeTypeDeclaration codeClass = new CodeTypeDeclaration (ClassName);
  73
  74                         string location = null;
  75                         HttpAddressBinding sab = (HttpAddressBinding) Port.Extensions.Find (typeof(HttpAddressBinding));
  76                         if (sab != null) location = sab.Location;
  77                         string url = GetServiceUrl (location);
  78
  79                         CodeConstructor cc = new CodeConstructor ();
  80                         cc.Attributes = MemberAttributes.Public;
  81                         CodeExpression ce = new CodeFieldReferenceExpression (new CodeThisReferenceExpression(), "Url");
  82                         CodeAssignStatement cas = new CodeAssignStatement (ce, new CodePrimitiveExpression (url));
  83                         cc.Statements.Add (cas);
  84                         codeClass.Members.Add (cc);
  85
  86                         memberIds = new CodeIdentifiers ();
  87                         return codeClass;
  88                 }
  89
  90                 protected override void BeginNamespace ()
  91                 {
  92                         xmlImporter = new XmlSchemaImporter (LiteralSchemas, ClassNames);
  93                         soapImporter = new SoapSchemaImporter (EncodedSchemas, ClassNames);
  94                         xmlExporter = new XmlCodeExporter (CodeNamespace, null);
  95                         xmlReflectionImporter = new XmlReflectionImporter ();
  96                 }
  97
  98                 protected override void EndClass ()
  99                 {
 100                         if (xmlExporter.IncludeMetadata.Count > 0)
 101                         {
 102                                 if (CodeTypeDeclaration.CustomAttributes == null)
 103                                         CodeTypeDeclaration.CustomAttributes = new CodeAttributeDeclarationCollection ();
 104                                 CodeTypeDeclaration.CustomAttributes.AddRange (xmlExporter.IncludeMetadata);
 105                         }
 106                 }
 107
 108                 protected override void EndNamespace ()
 109                 {
 110                 }
 111
 112                 protected override bool IsBindingSupported ()
 113                 {
 114                         throw new NotImplementedException ();
 115                 }
 116
 117                 [MonoTODO]
 118                 protected override bool IsOperationFlowSupported (OperationFlow flow)
 119                 {
 120                         throw new NotImplementedException ();
 121                 }
 122
 123                 protected override CodeMemberMethod GenerateMethod ()
 124                 {
 125                         try
 126                         {
 127                                 HttpOperationBinding httpOper = OperationBinding.Extensions.Find (typeof (HttpOperationBinding)) as HttpOperationBinding;
 128                                 if (httpOper == null) throw new Exception ("Http operation binding not found");
 129
 130                                 XmlMembersMapping inputMembers = ImportInMembersMapping (InputMessage);
 131                                 XmlTypeMapping outputMember = ImportOutMembersMapping (OutputMessage);
 132
 133                                 CodeMemberMethod met = GenerateMethod (memberIds, httpOper, inputMembers, outputMember);
 134
 135                                 xmlExporter.ExportMembersMapping (inputMembers);
 136                                 if (outputMember != null)
 137                                         xmlExporter.ExportTypeMapping (outputMember);
 138
 139                                 return met;
 140                         }
 141                         catch (Exception ex)
 142                         {
 143                                 UnsupportedOperationBindingWarning (ex.Message);
 144                                 return null;
 145                         }
 146                 }
 147
 148                 XmlMembersMapping ImportInMembersMapping (Message msg)
 149                 {
 150                         SoapSchemaMember[] mems = new SoapSchemaMember [msg.Parts.Count];
 151                         for (int n=0; n<mems.Length; n++)
 152                         {
 153                                 SoapSchemaMember mem = new SoapSchemaMember();
 154                                 mem.MemberName = msg.Parts[n].Name;
 155                                 mem.MemberType = msg.Parts[n].Type;
 156                                 mems[n] = mem;
 157                         }
 158                         return soapImporter.ImportMembersMapping (Operation.Name, "", mems);
 159                 }
 160
 161                 XmlTypeMapping ImportOutMembersMapping (Message msg)
 162                 {
 163                         if (msg.Parts.Count == 0) return null;
 164
 165                         if (msg.Parts[0].Name == "Body" && msg.Parts[0].Element == XmlQualifiedName.Empty)
 166                                 return xmlReflectionImporter.ImportTypeMapping (typeof(XmlNode));
 167                         else
 168                                 return xmlImporter.ImportTypeMapping (msg.Parts[0].Element);
 169                 }
 170
 171                 CodeMemberMethod GenerateMethod (CodeIdentifiers memberIds, HttpOperationBinding httpOper, XmlMembersMapping inputMembers, XmlTypeMapping outputMember)
 172                 {
 173                         CodeIdentifiers pids = new CodeIdentifiers ();
 174                         CodeMemberMethod method = new CodeMemberMethod ();
 175                         CodeMemberMethod methodBegin = new CodeMemberMethod ();
 176                         CodeMemberMethod methodEnd = new CodeMemberMethod ();
 177                         method.Attributes = MemberAttributes.Public;
 178                         methodBegin.Attributes = MemberAttributes.Public;
 179                         methodEnd.Attributes = MemberAttributes.Public;
 180
 181                         // Find unique names for temporary variables
 182
 183                         for (int n=0; n<inputMembers.Count; n++)
 184                                 pids.AddUnique (inputMembers[n].MemberName, inputMembers[n]);
 185
 186                         string varAsyncResult = pids.AddUnique ("asyncResult","asyncResult");
 187                         string varResults = pids.AddUnique ("results","results");
 188                         string varCallback = pids.AddUnique ("callback","callback");
 189                         string varAsyncState = pids.AddUnique ("asyncState","asyncState");
 190
 191                         string messageName = memberIds.AddUnique(CodeIdentifier.MakeValid(Operation.Name),method);
 192
 193                         method.Name = Operation.Name;
 194                         methodBegin.Name = memberIds.AddUnique(CodeIdentifier.MakeValid("Begin" + Operation.Name),method);
 195                         methodEnd.Name = memberIds.AddUnique(CodeIdentifier.MakeValid("End" + Operation.Name),method);
 196
 197                         method.ReturnType = new CodeTypeReference (typeof(void));
 198                         methodEnd.ReturnType = new CodeTypeReference (typeof(void));
 199                         methodEnd.Parameters.Add (new CodeParameterDeclarationExpression (typeof (IAsyncResult),varAsyncResult));
 200
 201                         CodeExpression[] paramArray = new CodeExpression [inputMembers.Count];
 202
 203                         for (int n=0; n<inputMembers.Count; n++)
 204                         {
 205                                 string ptype = GetSimpleType (inputMembers[n]);
 206                                 CodeParameterDeclarationExpression param = new CodeParameterDeclarationExpression (ptype, inputMembers[n].MemberName);
 207
 208                                 param.Direction = FieldDirection.In;
 209                                 method.Parameters.Add (param);
 210                                 methodBegin.Parameters.Add (param);
 211                                 paramArray [n] = new CodeVariableReferenceExpression (param.Name);
 212                         }
 213
 214                         bool isVoid = true;
 215                         if (outputMember != null)
 216                         {
 217                                 method.ReturnType = new CodeTypeReference (outputMember.TypeFullName);
 218                                 methodEnd.ReturnType = new CodeTypeReference (outputMember.TypeFullName);
 219                                 xmlExporter.AddMappingMetadata (method.ReturnTypeCustomAttributes, outputMember, "");
 220                                 isVoid = false;
 221                         }
 222
 223                         methodBegin.Parameters.Add (new CodeParameterDeclarationExpression (typeof (AsyncCallback),varCallback));
 224                         methodBegin.Parameters.Add (new CodeParameterDeclarationExpression (typeof (object),varAsyncState));
 225                         methodBegin.ReturnType = new CodeTypeReference (typeof(IAsyncResult));
 226
 227                         // Array of input parameters
 228
 229                         CodeArrayCreateExpression methodParams;
 230                         if (paramArray.Length > 0)
 231                                 methodParams = new CodeArrayCreateExpression (typeof(object), paramArray);
 232                         else
 233                                 methodParams = new CodeArrayCreateExpression (typeof(object), 0);
 234
 235                         // Generate method url
 236
 237                         CodeThisReferenceExpression ethis = new CodeThisReferenceExpression();
 238
 239                         CodeExpression thisURlExp = new CodeFieldReferenceExpression (ethis, "Url");
 240                         CodePrimitiveExpression metUrl = new CodePrimitiveExpression (httpOper.Location);
 241                         CodeBinaryOperatorExpression expMethodLocation = new CodeBinaryOperatorExpression (thisURlExp, CodeBinaryOperatorType.Add, metUrl);
 242
 243                         // Invoke call
 244
 245                         CodePrimitiveExpression varMsgName = new CodePrimitiveExpression (messageName);
 246                         CodeMethodInvokeExpression inv;
 247
 248                         inv = new CodeMethodInvokeExpression (ethis, "Invoke", varMsgName, expMethodLocation, methodParams);
 249                         if (!isVoid)
 250                                 method.Statements.Add (new CodeMethodReturnStatement (new CodeCastExpression (method.ReturnType, inv)));
 251                         else
 252                                 method.Statements.Add (inv);
 253
 254                         // Begin Invoke Call
 255
 256                         CodeExpression expCallb = new CodeVariableReferenceExpression (varCallback);
 257                         CodeExpression expAsyncs = new CodeVariableReferenceExpression (varAsyncState);
 258                         inv = new CodeMethodInvokeExpression (ethis, "BeginInvoke", varMsgName, expMethodLocation, methodParams, expCallb, expAsyncs);
 259                         methodBegin.Statements.Add (new CodeMethodReturnStatement (inv));
 260
 261                         // End Invoke call
 262
 263                         CodeExpression varAsyncr = new CodeVariableReferenceExpression (varAsyncResult);
 264                         inv = new CodeMethodInvokeExpression (ethis, "EndInvoke", varAsyncr);
 265                         if (!isVoid)
 266                                 methodEnd.Statements.Add (new CodeMethodReturnStatement (new CodeCastExpression (methodEnd.ReturnType, inv)));
 267                         else
 268                                 methodEnd.Statements.Add (inv);
 269
 270                         // Attributes
 271
 272                         CodeAttributeDeclaration att = new CodeAttributeDeclaration ("System.Web.Services.Protocols.HttpMethodAttribute");
 273                         att.Arguments.Add (new CodeAttributeArgument (new CodeTypeOfExpression(GetOutMimeFormatter ())));
 274                         att.Arguments.Add (new CodeAttributeArgument (new CodeTypeOfExpression(GetInMimeFormatter ())));
 275                         AddCustomAttribute (method, att, true);
 276
 277                         CodeTypeDeclaration.Members.Add (method);
 278                         CodeTypeDeclaration.Members.Add (methodBegin);
 279                         CodeTypeDeclaration.Members.Add (methodEnd);
 280
 281                         return method;
 282                 }
 283
 284                 protected virtual Type GetInMimeFormatter ()
 285                 {
 286                         return null;
 287                 }
 288
 289                 protected virtual Type GetOutMimeFormatter ()
 290                 {
 291                         if (OperationBinding.Output.Extensions.Find (typeof(MimeXmlBinding)) != null)
 292                                 return typeof (XmlReturnReader);
 293
 294                         MimeContentBinding bin = (MimeContentBinding) OperationBinding.Output.Extensions.Find (typeof(MimeContentBinding));
 295                         if (bin != null && bin.Type == "text/xml")
 296                                 return typeof (XmlReturnReader);
 297
 298                         return typeof(NopReturnReader);
 299                 }
 300
 301                 string GetSimpleType (XmlMemberMapping member)
 302                 {
 303                         // MS seems to always use System.String for input parameters, except for byte[]
 304
 305                         switch (member.TypeName)
 306                         {
 307                                 case "hexBinary":
 308                                 case "base64Binary":
 309                                         return "System.String";
 310
 311                                 default:
 312                                         string ptype = member.TypeFullName;
 313                                         int i = ptype.IndexOf ('[');
 314                                         if (i == -1)
 315                                                 return "System.String";
 316                                         else
 317                                                 return "System.String" + ptype.Substring (i);
 318                         }
 319                 }
 320
 321                 #endregion
 322         }
 323 }