C# (CSharp) IMongoQuery.ToMatchDocument примеры использования

Пример #1

Файл: MainDb.cs Проект: giaynhapcoder/muDoctor

        //http://docs.mongodb.org/manual/core/aggregation-pipeline-optimization/#aggregation-pipeline-sequence-optimization

        public double Sum <T>(IMongoQuery query, IMongoGroupBy fieldsGroupBy)
        {
            var _match = query.ToMatchDocument();

            var _group = fieldsGroupBy.ToGroupDocument(MongoExtensions.GetCollectionName <T>());

            var _result = Aggregate <T>(_match, _group).SingleOrDefault();

            return(_result != null?Convert.ToDouble(_result.GetValue(1)) : 0);
        }