internal BsonValue Serialize(Type type, object obj, int depth)
{
if (++depth > MAX_DEPTH)
{
throw LiteException.DocumentMaxDepth(MAX_DEPTH, type);
}
if (obj == null)
{
return(BsonValue.Null);
}
// if is already a bson value
if (obj is BsonValue bsonValue)
{
return(bsonValue);
}
// test string - mapper has some special options
else if (obj is String)
{
var str = this.TrimWhitespace ? (obj as String).Trim() : (String)obj;
if (this.EmptyStringToNull && str.Length == 0)
{
return(BsonValue.Null);
}
else
{
return(new BsonValue(str));
}
}
// basic Bson data types (cast datatype for better performance optimization)
else if (obj is Int32)
{
return(new BsonValue((Int32)obj));
}
else if (obj is Int64)
{
return(new BsonValue((Int64)obj));
}
else if (obj is Double)
{
return(new BsonValue((Double)obj));
}
else if (obj is Decimal)
{
return(new BsonValue((Decimal)obj));
}
else if (obj is Byte[])
{
return(new BsonValue((Byte[])obj));
}
else if (obj is ObjectId)
{
return(new BsonValue((ObjectId)obj));
}
else if (obj is Guid)
{
return(new BsonValue((Guid)obj));
}
else if (obj is Boolean)
{
return(new BsonValue((Boolean)obj));
}
else if (obj is DateTime)
{
return(new BsonValue((DateTime)obj));
}
// basic .net type to convert to bson
else if (obj is Int16 || obj is UInt16 || obj is Byte || obj is SByte)
{
return(new BsonValue(Convert.ToInt32(obj)));
}
else if (obj is UInt32)
{
return(new BsonValue(Convert.ToInt64(obj)));
}
else if (obj is UInt64)
{
var ulng = ((UInt64)obj);
var lng = unchecked ((Int64)ulng);
return(new BsonValue(lng));
}
else if (obj is Single)
{
return(new BsonValue(Convert.ToDouble(obj)));
}
else if (obj is Char)
{
return(new BsonValue(obj.ToString()));
}
else if (obj is Enum)
{
if (this.EnumAsInteger)
{
return(new BsonValue((int)obj));
}
else
{
return(new BsonValue(obj.ToString()));
}
}
// check if is a custom type
else if (_customSerializer.TryGetValue(type, out var custom) || _customSerializer.TryGetValue(obj.GetType(), out custom))
{
return(custom(obj));
}
// for dictionary
else if (obj is IDictionary dict)
{
// when you are converting Dictionary<string, object>
if (type == typeof(object))
{
type = obj.GetType();
}
var itemType = type.GetTypeInfo().IsGenericType ? type.GetGenericArguments()[1] : typeof(object);
return(this.SerializeDictionary(itemType, dict, depth));
}
// check if is a list or array
else if (obj is IEnumerable)
{
return(this.SerializeArray(Reflection.GetListItemType(obj.GetType()), obj as IEnumerable, depth));
}
// otherwise serialize as a plain object
else
{
return(this.SerializeObject(type, obj, depth));
}
}
/// <summary>
/// Use this method to override how your class can be, by default, mapped from entity to Bson document.
/// Returns an EntityMapper from each requested Type
/// </summary>
protected virtual EntityMapper BuildEntityMapper(Type type)
{
var mapper = new EntityMapper(type);
var idAttr = typeof(BsonIdAttribute);
var ignoreAttr = typeof(BsonIgnoreAttribute);
var fieldAttr = typeof(BsonFieldAttribute);
var dbrefAttr = typeof(BsonRefAttribute);
var members = this.GetTypeMembers(type);
var id = this.GetIdMember(members);
foreach (var memberInfo in members)
{
// checks [BsonIgnore]
if (memberInfo.IsDefined(ignoreAttr, true))
{
continue;
}
// checks field name conversion
var name = this.ResolveFieldName(memberInfo.Name);
// check if property has [BsonField]
var field = (BsonFieldAttribute)memberInfo.GetCustomAttributes(fieldAttr, false).FirstOrDefault();
// check if property has [BsonField] with a custom field name
if (field != null && field.Name != null)
{
name = field.Name;
}
// checks if memberInfo is id field
if (memberInfo == id)
{
name = "_id";
}
// create getter/setter function
var getter = Reflection.CreateGenericGetter(type, memberInfo);
var setter = Reflection.CreateGenericSetter(type, memberInfo);
// check if property has [BsonId] to get with was setted AutoId = true
var autoId = (BsonIdAttribute)memberInfo.GetCustomAttributes(idAttr, false).FirstOrDefault();
// get data type
var dataType = memberInfo is PropertyInfo ?
(memberInfo as PropertyInfo).PropertyType :
(memberInfo as FieldInfo).FieldType;
// check if datatype is list/array
var isList = Reflection.IsList(dataType);
// create a property mapper
var member = new MemberMapper
{
AutoId = autoId == null ? true : autoId.AutoId,
FieldName = name,
MemberName = memberInfo.Name,
DataType = dataType,
IsList = isList,
UnderlyingType = isList ? Reflection.GetListItemType(dataType) : dataType,
Getter = getter,
Setter = setter
};
// check if property has [BsonRef]
var dbRef = (BsonRefAttribute)memberInfo.GetCustomAttributes(dbrefAttr, false).FirstOrDefault();
if (dbRef != null && memberInfo is PropertyInfo)
{
BsonMapper.RegisterDbRef(this, member, _typeNameBinder, dbRef.Collection ?? this.ResolveCollectionName((memberInfo as PropertyInfo).PropertyType));
}
// support callback to user modify member mapper
this.ResolveMember?.Invoke(type, memberInfo, member);
// test if has name and there is no duplicate field
if (member.FieldName != null && mapper.Members.Any(x => x.FieldName.Equals(name, StringComparison.InvariantCultureIgnoreCase)) == false)
{
mapper.Members.Add(member);
}
}
return(mapper);
}
