private BsonValue Serialize(Type type, object obj, int depth)
{
if (++depth > MAX_DEPTH)
{
throw LiteException.DocumentMaxDepth(MAX_DEPTH);
}
if (obj == null)
{
return(BsonValue.Null);
}
Func <object, BsonValue> custom;
// if is already a bson value
if (obj is BsonValue)
{
return(new BsonValue((BsonValue)obj));
}
// 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 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)
{
return(new BsonValue(Convert.ToInt32(obj)));
}
else if (obj is UInt32 || obj is UInt64)
{
return(new BsonValue(Convert.ToInt64(obj)));
}
else if (obj is Single || obj is Decimal)
{
return(new BsonValue(Convert.ToDouble(obj)));
}
else if (obj is Char || obj is Enum)
{
return(new BsonValue(obj.ToString()));
}
// check if is a custom type
else if (_customSerializer.TryGetValue(type, out custom) || _customSerializer.TryGetValue(obj.GetType(), out custom))
{
return(custom(obj));
}
// for dictionary
else if (obj is IDictionary)
{
var itemType = type.GetGenericArguments()[1];
return(this.SerializeDictionary(itemType, obj as IDictionary, depth));
}
// check if is a list or array
else if (obj is IEnumerable)
{
return(this.SerializeArray(Reflection.GetListItemType(obj), obj as IEnumerable, depth));
}
// otherwise serialize as a plain object
else
{
return(this.SerializeObject(type, obj, depth));
}
}