private async Task <IEnumerable <T> > Find <T>(ObjectSerializer Serializer, IMongoCollection <BsonDocument> Collection,
int Offset, int MaxCount, FilterDefinition <BsonDocument> BsonFilter, params string[] SortOrder)
{
IFindFluent <BsonDocument, BsonDocument> ResultSet = Collection.Find <BsonDocument>(BsonFilter);
if (SortOrder.Length > 0)
{
SortDefinition <BsonDocument> SortDefinition = null;
foreach (string SortBy in SortOrder)
{
if (SortDefinition == null)
{
if (SortBy.StartsWith("-"))
{
SortDefinition = Builders <BsonDocument> .Sort.Descending(Serializer.ToShortName(SortBy.Substring(1)));
}
else
{
SortDefinition = Builders <BsonDocument> .Sort.Ascending(Serializer.ToShortName(SortBy));
}
}
else
{
if (SortBy.StartsWith("-"))
{
SortDefinition = SortDefinition.Descending(Serializer.ToShortName(SortBy.Substring(1)));
}
else
{
SortDefinition = SortDefinition.Ascending(Serializer.ToShortName(SortBy));
}
}
}
ResultSet = ResultSet.Sort(SortDefinition);
}
if (Offset > 0)
{
ResultSet = ResultSet.Skip(Offset);
}
if (MaxCount < int.MaxValue)
{
ResultSet = ResultSet.Limit(MaxCount);
}
IAsyncCursor <BsonDocument> Cursor = await ResultSet.ToCursorAsync();
LinkedList <T> Result = new LinkedList <T>();
BsonDeserializationArgs Args = new BsonDeserializationArgs()
{
NominalType = typeof(T)
};
while (await Cursor.MoveNextAsync())
{
foreach (BsonDocument Document in Cursor.Current)
{
BsonDocumentReader Reader = new BsonDocumentReader(Document);
BsonDeserializationContext Context = BsonDeserializationContext.CreateRoot(Reader);
T Obj = (T)Serializer.Deserialize(Context, Args);
Result.AddLast(Obj);
}
}
return(Result);
}