public static string getFieldNameWithoutPrefix(string fname)//从对象的属性名得出真实的对象属性名称，也就是去掉所有前缀的名称
{
string FieldName;
if (fname.Contains("_"))
{
int i = fname.LastIndexOf('_');
FieldName = fname.Substring(i + 1);
if (fname.Contains("xl_") && (FieldName.EndsWith("List")))
{
FieldName = FieldName.Substring(0, FieldName.Length - 4);
}
return(FieldName);
}
else
{
return(null);
}
}
/// <summary>
/// Deserializes an object from a binary source.
/// </summary>
/// <param name="Reader">Binary deserializer.</param>
/// <param name="DataType">Optional datatype. If not provided, will be read from the binary source.</param>
/// <param name="Embedded">If the object is embedded into another.</param>
/// <returns>Deserialized object.</returns>
public override object Deserialize(IBsonReader Reader, BsonType?DataType, bool Embedded)
{
BsonReaderBookmark Bookmark = Reader.GetBookmark();
BsonType? DataTypeBak = DataType;
if (!DataType.HasValue)
{
DataType = Reader.ReadBsonType();
}
switch (DataType.Value)
{
case BsonType.Document:
break;
case BsonType.Boolean:
return(Reader.ReadBoolean());
case BsonType.Int32:
return(Reader.ReadInt32());
case BsonType.Int64:
return(Reader.ReadInt64());
case BsonType.Decimal128:
return((decimal)Reader.ReadDecimal128());
case BsonType.Double:
return(Reader.ReadDouble());
case BsonType.DateTime:
return(ObjectSerializer.UnixEpoch.AddMilliseconds(Reader.ReadDateTime()));
case BsonType.String:
case BsonType.Symbol:
case BsonType.JavaScript:
case BsonType.JavaScriptWithScope:
return(Reader.ReadString());
case BsonType.Binary:
return(Reader.ReadBytes());
case BsonType.Null:
Reader.ReadNull();
return(null);
default:
throw new Exception("Object or value expected.");
}
LinkedList <KeyValuePair <string, object> > Properties = new LinkedList <KeyValuePair <string, object> >();
LinkedList <KeyValuePair <string, object> > LowerCase = null;
string TypeName = string.Empty;
Guid ObjectId = Guid.Empty;
string CollectionName = string.Empty;
string FieldName;
BsonType ValueType;
object Value;
Reader.ReadStartDocument();
while (Reader.State == BsonReaderState.Type)
{
ValueType = Reader.ReadBsonType();
if (ValueType == BsonType.EndOfDocument)
{
break;
}
FieldName = Reader.ReadName();
switch (ValueType)
{
case BsonType.Array:
Value = GeneratedObjectSerializerBase.ReadArray(null, this.Provider, Reader, ValueType);
break;
case BsonType.Binary:
Value = Reader.ReadBytes();
break;
case BsonType.Boolean:
Value = Reader.ReadBoolean();
break;
case BsonType.DateTime:
Value = ObjectSerializer.UnixEpoch.AddMilliseconds(Reader.ReadDateTime());
break;
case BsonType.Decimal128:
Value = (decimal)Reader.ReadDecimal128();
break;
case BsonType.Document:
Value = this.Deserialize(Reader, ValueType, true);
break;
case BsonType.Double:
Value = Reader.ReadDouble();
break;
case BsonType.Int32:
Value = Reader.ReadInt32();
break;
case BsonType.Int64:
Value = Reader.ReadInt64();
break;
case BsonType.JavaScript:
Value = Reader.ReadJavaScript();
break;
case BsonType.JavaScriptWithScope:
Value = Reader.ReadJavaScriptWithScope();
break;
case BsonType.Null:
Value = null;
Reader.ReadNull();
break;
case BsonType.ObjectId:
Value = Reader.ReadObjectId();
break;
case BsonType.String:
Value = Reader.ReadString();
break;
case BsonType.Symbol:
Value = Reader.ReadSymbol();
break;
default:
throw new Exception("Unrecognized data type: " + ValueType.ToString());
}
switch (FieldName)
{
case "_id":
if (Value is Guid Guid)
{
ObjectId = Guid;
}
else if (Value is string s)
{
ObjectId = new Guid(s);
}
else if (Value is byte[] A)
{
ObjectId = new Guid(A);
}
else if (Value is ObjectId ObjId)
{
ObjectId = GeneratedObjectSerializerBase.ObjectIdToGuid(ObjId);
}
else
{
throw new Exception("Unrecognized Object ID type: " + Value.GetType().FullName);
}
break;
case "_type":
TypeName = Value?.ToString();
if (this.returnTypedObjects && !string.IsNullOrEmpty(TypeName))
{
Type DesiredType = Types.GetType(TypeName);
if (DesiredType is null)
{
DesiredType = typeof(GenericObject);
}
if (DesiredType != typeof(GenericObject))
{
IObjectSerializer Serializer2 = this.provider.GetObjectSerializer(DesiredType);
Reader.ReturnToBookmark(Bookmark);
return(Serializer2.Deserialize(Reader, DataTypeBak, Embedded));
}
}
break;
case "_collection":
CollectionName = Value?.ToString();
break;
default:
if (FieldName.EndsWith("_L"))
{
string s = FieldName.Substring(0, FieldName.Length - 2);
bool Ignore = false;
foreach (KeyValuePair <string, object> P in Properties)
{
if (P.Key == s)
{
Ignore = true;
break;
}
}
if (!Ignore)
{
if (LowerCase is null)
{
LowerCase = new LinkedList <KeyValuePair <string, object> >();
}
LowerCase.AddLast(new KeyValuePair <string, object>(s, Value));
}
}
else
{
Properties.AddLast(new KeyValuePair <string, object>(FieldName, Value));
}
break;
}
}
if (!(LowerCase is null))
{
foreach (KeyValuePair <string, object> P in LowerCase)
{
bool Ignore = false;
foreach (KeyValuePair <string, object> P2 in Properties)
{
if (P2.Key == P.Key)
{
Ignore = true;
break;
}
}
if (!Ignore)
{
Properties.AddLast(new KeyValuePair <string, object>(P.Key + "_L", P.Value));
}
}
}
Reader.ReadEndDocument();
return(new GenericObject(CollectionName, TypeName, ObjectId, Properties));
}