public static StringValueDictionary <T> ReadDictionary <T> (this XmlReader reader, ITypeResolver resolver)
{
var result = new StringValueDictionary <T>();
ReadDictionary(reader, result, resolver);
return(result);
}
public static void ReadDictionary <T> (XmlReader reader, StringValueDictionary <T> result, ITypeResolver resolver)
{
if (reader.NodeType != XmlNodeType.Element)
{
throw new InvalidDataException("Provided XmlReader must be at the start of an element");
}
string key;
int typeId;
T value;
var typeIds = new Dictionary <int, Type>();
var serializers = new Dictionary <int, XmlSerializer>();
string sentinel = reader.Name;
var outputType = typeof(T);
reader.ReadToDescendant("types");
if (!reader.IsEmptyElement &&
(reader.GetAttribute("nil") == null) &&
(reader.GetAttribute("xsi:nil") == null))
{
while (reader.Read())
{
if (reader.NodeType == XmlNodeType.EndElement && reader.Name == "types")
{
break;
}
else if (reader.NodeType == XmlNodeType.Element && reader.Name == "type")
{
int id = int.Parse(reader.GetAttribute("id"), CultureInfo.InvariantCulture);
string typeName = reader.GetAttribute("name");
var t = resolver.NameToType(typeName);
if (outputType.IsAssignableFrom(t))
{
typeIds[id] = t;
}
else
{
throw new InvalidDataException(String.Format("Cannot store an {0} into a Dictionary<String, {1}>.", t.Name, outputType.Name));
}
}
}
}
reader.ReadToFollowing("values");
if (!reader.IsEmptyElement)
{
reader.Read();
while (!reader.EOF)
{
if (reader.NodeType == XmlNodeType.Element)
{
key = reader.GetAttribute("key");
typeId = int.Parse(reader.GetAttribute("typeId"), CultureInfo.InvariantCulture);
XmlSerializer ser;
if (!serializers.TryGetValue(typeId, out ser))
{
ser = new XmlSerializer(typeIds[typeId]);
serializers[typeId] = ser;
}
value = (T)ser.Deserialize(reader);
if (key == null)
{
if (value is INamedObject)
{
key = ((INamedObject)value).Name;
}
}
if (key == null)
{
throw new InvalidDataException(String.Format("Item has no key and is not INamedObject: {0}", value));
}
result.Add(key, value);
}
else if (reader.NodeType == XmlNodeType.EndElement && reader.Name == "values")
{
break;
}
else
{
if (!reader.Read())
{
break;
}
}
}
}
while (!reader.EOF && (reader.NodeType != XmlNodeType.EndElement || reader.Name != sentinel))
{
reader.Read();
}
}