public Type GetActualType(IBsonReader bsonReader, Type nominalType)
{
if (nominalType == typeof(OrderModel))
{
var ret = nominalType;
var bookmark = bsonReader.GetBookmark();
bsonReader.ReadStartDocument();
if (bsonReader.FindElement(orderType))
{
var value = bsonReader.ReadString();
ret = OrderTypeResolver.ResolveOrderType(value);
if (ret == null)
{
throw new Exception("Could not find type " + value);
}
if (!ret.IsSubclassOf(typeof(OrderModel)))
{
throw new Exception("Database type does not inherit from OrderModel.");
}
}
bsonReader.ReturnToBookmark(bookmark);
return(ret);
}
else
{
return(nominalType);
}
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
var obj = JObject.Load(reader);
OrderModel orderModel;
var type = obj["Type"];
if (type == null)
{
throw new ArgumentNullException("Type", "Order type is null");
}
string orderType = type.Value <string>();
orderModel = OrderTypeResolver.CreateOrderInstance(orderType);
serializer.Populate(obj.CreateReader(), orderModel);
return(orderModel);
}