System.Xml.Serialization.XmlSerializableMapping.XmlSerializableMapping C# (CSharp) Method

		internal XmlSerializableMapping(string elementName, string ns, TypeData typeData, string xmlType, string xmlTypeNamespace)
			: base(elementName, ns, typeData, xmlType, xmlTypeNamespace)
		{
#if NET_2_0
			XmlSchemaProviderAttribute schemaProvider = (XmlSchemaProviderAttribute) Attribute.GetCustomAttribute (typeData.Type, typeof (XmlSchemaProviderAttribute));

			if (schemaProvider != null) {
				string method = schemaProvider.MethodName;
				MethodInfo mi = typeData.Type.GetMethod (method, BindingFlags.Static | BindingFlags.Public | BindingFlags.FlattenHierarchy);
				if (mi == null)
					throw new InvalidOperationException (String.Format ("Type '{0}' must implement public static method '{1}'", typeData.Type, method));
				if (!typeof (XmlQualifiedName).IsAssignableFrom (mi.ReturnType) &&
				    // LAMESPEC: it is undocumented. (We don't have to tell users about it in the error message.)
				    // Also do not add such a silly compatibility test to assert that it does not raise an error.
				    !typeof (XmlSchemaComplexType).IsAssignableFrom (mi.ReturnType))
					throw new InvalidOperationException (String.Format ("Method '{0}' indicated by XmlSchemaProviderAttribute must have its return type as XmlQualifiedName", method));
				XmlSchemaSet xs = new XmlSchemaSet ();
				object retVal = mi.Invoke (null, new object [] { xs });
				_schemaTypeName = XmlQualifiedName.Empty;
				if (retVal == null)
					return;

				if (retVal is XmlSchemaComplexType) {
					_schemaType = (XmlSchemaComplexType) retVal;
					if (!_schemaType.QualifiedName.IsEmpty)
						_schemaTypeName = _schemaType.QualifiedName;
					else
						_schemaTypeName = new XmlQualifiedName (xmlType, xmlTypeNamespace);
				}
				else if (retVal is XmlQualifiedName) {
					_schemaTypeName = (XmlQualifiedName)retVal;
				}
				else
					throw new InvalidOperationException (
						String.Format ("Method {0}.{1}() specified by XmlSchemaProviderAttribute has invalid signature: return type must be compatible with System.Xml.XmlQualifiedName.", typeData.Type.Name, method));

				// defaultNamespace at XmlReflectionImporter takes precedence for Namespace, but not for XsdTypeNamespace.
				UpdateRoot (new XmlQualifiedName (_schemaTypeName.Name, Namespace ?? _schemaTypeName.Namespace));
				XmlTypeNamespace = _schemaTypeName.Namespace;
				XmlType = _schemaTypeName.Name;

				if (!_schemaTypeName.IsEmpty && xs.Count > 0) {
					XmlSchema [] schemas = new XmlSchema [xs.Count];
					xs.CopyTo (schemas, 0);
					_schema = schemas [0];
				}

				return;
			}
#endif
			IXmlSerializable serializable = (IXmlSerializable)Activator.CreateInstance (typeData.Type, true);
#if NET_2_0
			try {
				_schema = serializable.GetSchema();
			} catch (Exception) {
				// LAMESPEC: .NET has a bad exception catch and swallows it silently.
			}
#else
			_schema = serializable.GetSchema();
#endif
			if (_schema != null) 
			{
				if (_schema.Id == null || _schema.Id.Length == 0) 
					throw new InvalidOperationException("Schema Id is missing. The schema returned from " + typeData.Type.FullName + ".GetSchema() must have an Id.");
			}
		}