mcs/class/System.XML/System.Xml.Serialization/ReflectionHelper.cs

   1 //
   2 // System.Xml.Serialization.ReflectionHelper
   3 //
   4 // Author:
   5 //   Lluis Sanchez Gual (lluis@ximian.com)
   6 //
   7 // Copyright (C) 2003 Ximian, Inc.\r
   8 //
   9
  10 using System.Reflection;
  11 using System.Collections;
  12 \r
  13 namespace System.Xml.Serialization\r
  14 {\r
  15         internal class ReflectionHelper\r
  16         {\r
  17                 Hashtable _clrTypes = new Hashtable ();
  18                 Hashtable _schemaTypes = new Hashtable ();
  19 \r
  20                 public void RegisterSchemaType (XmlTypeMapping map, string xmlType, string ns)
  21                 {
  22                         string mapKey = xmlType + "/" + ns;
  23                         if (!_schemaTypes.ContainsKey (xmlType))
  24                                 _schemaTypes.Add (mapKey, map);
  25                 }
  26
  27                 public XmlTypeMapping GetRegisteredSchemaType (string xmlType, string ns)
  28                 {
  29                         string mapKey = xmlType + "/" + ns;
  30                         return _schemaTypes[mapKey] as XmlTypeMapping;
  31                 }
  32
  33                 public void RegisterClrType (XmlTypeMapping map, Type type, string ns)
  34                 {
  35                         if (type == typeof(object)) ns = "";
  36                         string mapKey = type.FullName + "/" + ns;
  37                         if (!_clrTypes.ContainsKey (mapKey))
  38                                 _clrTypes.Add (mapKey, map);
  39                 }
  40
  41                 public XmlTypeMapping GetRegisteredClrType (Type type, string ns)
  42                 {
  43                         if (type == typeof(object)) ns = "";
  44                         string mapKey = type.FullName + "/" + ns;
  45                         return _clrTypes[mapKey] as XmlTypeMapping;
  46                 }       \r
  47 \r
  48                 public Exception CreateError (XmlTypeMapping map, string message)
  49                 {
  50                         return new InvalidOperationException ("There was an error reflecting '" + map.TypeFullName + "': " + message);
  51                 }
  52
  53                 public static void CheckSerializableType (Type type)
  54                 {
  55                         if (type.IsArray) return;
  56
  57                         if (type.GetConstructor (Type.EmptyTypes) == null && !type.IsAbstract && !type.IsValueType)
  58                                 throw new InvalidOperationException (type.Name + " cannot be serialized because it does not have a default public constructor");
  59
  60                         if (type.IsInterface)
  61                                 throw new InvalidOperationException (type.Name + " cannot be serialized because it is an interface");
  62                 }
  63         }\r
  64 }