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

   1 //
   2 // System.Web.Services.Description.ExtensionManager.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.Reflection;
  32 using System.Collections;
  33 using System.Web.Services.Configuration;
  34 using System.Xml.Serialization;
  35 using System.Xml;
  36
  37 namespace System.Web.Services.Description
  38 {
  39         internal abstract class ExtensionManager
  40         {
  41                 static Hashtable extensionsByName;
  42                 static Hashtable extensionsByType;
  43                 static ArrayList maps = new ArrayList ();
  44                 static ArrayList extensions = new ArrayList ();
  45
  46                 static ExtensionManager ()
  47                 {
  48                         extensionsByName = new Hashtable ();
  49                         extensionsByType = new Hashtable ();
  50
  51                         RegisterExtensionType (typeof (HttpAddressBinding));
  52                         RegisterExtensionType (typeof (HttpBinding));
  53                         RegisterExtensionType (typeof (HttpOperationBinding));
  54                         RegisterExtensionType (typeof (HttpUrlEncodedBinding));
  55                         RegisterExtensionType (typeof (HttpUrlReplacementBinding));
  56                         RegisterExtensionType (typeof (MimeContentBinding));
  57                         RegisterExtensionType (typeof (MimeMultipartRelatedBinding));
  58                         RegisterExtensionType (typeof (MimeTextBinding));
  59                         RegisterExtensionType (typeof (MimeXmlBinding));
  60                         RegisterExtensionType (typeof (SoapAddressBinding));
  61                         RegisterExtensionType (typeof (SoapBinding));
  62                         RegisterExtensionType (typeof (SoapBodyBinding));
  63                         RegisterExtensionType (typeof (SoapFaultBinding));
  64                         RegisterExtensionType (typeof (SoapHeaderBinding));
  65 //                      RegisterExtensionType (typeof (SoapHeaderFaultBinding));
  66                         RegisterExtensionType (typeof (SoapOperationBinding));
  67
  68                         foreach (Type type in WSConfig.Instance.FormatExtensionTypes)
  69                                 RegisterExtensionType (type);
  70
  71                         CreateExtensionSerializers ();
  72                 }
  73
  74                 static void RegisterExtensionType (Type type)
  75                 {
  76                         ExtensionInfo ext = new ExtensionInfo();
  77                         ext.Type = type;
  78
  79                         object[] ats = type.GetCustomAttributes (typeof(XmlFormatExtensionPrefixAttribute), true);
  80
  81                         foreach (XmlFormatExtensionPrefixAttribute at in ats)
  82                                 ext.NamespaceDeclarations.Add (new XmlQualifiedName (at.Prefix, at.Namespace));
  83
  84                         ats = type.GetCustomAttributes (typeof(XmlFormatExtensionAttribute), true);
  85                         if (ats.Length > 0)
  86                         {
  87                                 XmlFormatExtensionAttribute at = (XmlFormatExtensionAttribute)ats[0];
  88                                 ext.ElementName = at.ElementName;
  89                                 if (at.Namespace != null) ext.Namespace = at.Namespace;
  90                         }
  91
  92                         XmlRootAttribute root = new XmlRootAttribute ();
  93                         root.ElementName = ext.ElementName;
  94                         if (ext.Namespace != null) root.Namespace = ext.Namespace;
  95
  96                         XmlReflectionImporter ri = new XmlReflectionImporter ();
  97                         XmlTypeMapping map = ri.ImportTypeMapping (type, root);
  98
  99                         if (ext.ElementName == null) throw new InvalidOperationException ("XmlFormatExtensionAttribute must be applied to type " + type);
 100                         extensionsByName.Add (ext.Namespace + " " + ext.ElementName, ext);
 101                         extensionsByType.Add (type, ext);
 102
 103                         maps.Add (map);
 104                         extensions.Add (ext);
 105                 }
 106
 107                 static void CreateExtensionSerializers ()
 108                 {
 109                         XmlSerializer[] sers = XmlSerializer.FromMappings ((XmlMapping[]) maps.ToArray (typeof(XmlMapping)));
 110                         for (int n=0; n<sers.Length; n++)
 111                                 ((ExtensionInfo)extensions[n]).Serializer = sers[n];
 112
 113                         maps = null;
 114                         extensions = null;
 115                 }
 116
 117                 public static ExtensionInfo GetFormatExtensionInfo (string elementName, string namesp)
 118                 {
 119                         return (ExtensionInfo) extensionsByName [namesp + " " + elementName];
 120                 }
 121
 122                 public static ExtensionInfo GetFormatExtensionInfo (Type extType)
 123                 {
 124                         return (ExtensionInfo) extensionsByType [extType];
 125                 }
 126
 127                 public static ICollection GetFormatExtensions ()
 128                 {
 129                         return extensionsByName.Values;
 130                 }
 131
 132                 public static ServiceDescriptionFormatExtensionCollection GetExtensionPoint (object ob)
 133                 {
 134                         Type type = ob.GetType ();
 135                         object[] ats = type.GetCustomAttributes (typeof(XmlFormatExtensionPointAttribute), true);
 136                         if (ats.Length == 0) return null;
 137
 138                         XmlFormatExtensionPointAttribute at = (XmlFormatExtensionPointAttribute)ats[0];
 139
 140                         PropertyInfo prop = type.GetProperty (at.MemberName);
 141                         if (prop != null)
 142                                 return prop.GetValue (ob, null) as ServiceDescriptionFormatExtensionCollection;
 143                         else {
 144                                 FieldInfo field = type.GetField (at.MemberName);
 145                                 if (field != null)
 146                                         return field.GetValue (ob) as ServiceDescriptionFormatExtensionCollection;
 147                                 else
 148                                         throw new InvalidOperationException ("XmlFormatExtensionPointAttribute: Member " + at.MemberName + " not found");
 149                         }
 150                 }
 151
 152                 public static ArrayList BuildExtensionImporters ()
 153                 {
 154                         return BuildExtensionList (WSConfig.Instance.ExtensionImporterTypes);
 155                 }
 156
 157                 public static ArrayList BuildExtensionReflectors ()
 158                 {
 159                         return BuildExtensionList (WSConfig.Instance.ExtensionReflectorTypes);
 160                 }
 161
 162                 public static ArrayList BuildExtensionList (ArrayList exts)
 163                 {
 164                         ArrayList extensionTypes = new ArrayList ();
 165
 166                         if (exts != null)
 167                         {
 168                                 foreach (WSExtensionConfig econf in exts)
 169                                 {
 170                                         bool added = false;
 171                                         for (int n=0; n<extensionTypes.Count && !added; n++)
 172                                         {
 173                                                 WSExtensionConfig cureconf = (WSExtensionConfig) extensionTypes [n];
 174
 175                                                 if ((econf.Group < cureconf.Group) || ((econf.Group == cureconf.Group) && (econf.Priority < cureconf.Priority))) {
 176                                                         extensionTypes.Insert (n, econf);
 177                                                         added = true;
 178                                                 }
 179                                         }
 180                                         if (!added) extensionTypes.Add (econf);
 181                                 }
 182                         }
 183
 184                         ArrayList extensions = new ArrayList (extensionTypes.Count);
 185                         foreach (WSExtensionConfig econf in extensionTypes)
 186                                 extensions.Add (Activator.CreateInstance (econf.Type));
 187
 188                         return extensions;
 189                 }
 190         }
 191
 192         internal class ExtensionInfo
 193         {
 194                 ArrayList _namespaceDeclarations;
 195                 string _namespace;
 196                 string _elementName;
 197                 Type _type;
 198                 XmlSerializer _serializer;
 199
 200                 public ArrayList NamespaceDeclarations
 201                 {
 202                         get {
 203                                 if (_namespaceDeclarations == null) _namespaceDeclarations = new ArrayList ();
 204                                 return _namespaceDeclarations;
 205                         }
 206                 }
 207
 208                 public string Namespace
 209                 {
 210                         get { return _namespace; }
 211                         set { _namespace = value; }
 212                 }
 213
 214                 public string ElementName
 215                 {
 216                         get { return _elementName; }
 217                         set { _elementName = value; }
 218                 }
 219
 220                 public Type Type
 221                 {
 222                         get { return _type; }
 223                         set { _type = value; }
 224                 }
 225
 226                 public XmlSerializer Serializer
 227                 {
 228                         get { return _serializer; }
 229                         set { _serializer = value; }
 230                 }
 231         }
 232 }