コード例 #1
0
        static void FetchData()
        {
            var db   = Database.GetProductionDatabase(MongoHostInfo.FromAppSettings());
            var coll = db.MongoDatabase.GetCollection("DbBar");

            coll.EnsureIndex(new IndexKeysBuilder().Ascending("Symbol", "Timestamp"));
            var      allBars   = db.QueryAll <DbBar>(_ => true);
            DateTime firstDate = DateTime.Parse("11/10/2001", null, DateTimeStyles.AdjustToUniversal);
            DateTime lastDate  = allBars.Any() ? allBars.OrderByDescending(x => x.Timestamp).First().Timestamp : firstDate;
            var      predicted = "DIA";

            var firstFetchDate = lastDate.AddDays(1);

            Console.WriteLine("Fetching from {0:MM/dd/yyyy} to today", firstFetchDate.Date);

            VersaceDataFetching.DownloadData(predicted, firstFetchDate, DateTime.Now.Date);

            Console.Write("Storing in mongo ...");
            var allNewBars = new List <DbBar>();

            foreach (var symbol in DataPreprocessing.GetTickers(predicted))
            {
                foreach (var dbBar in DataImport.LoadVersace(symbol).Select(x => new DbBar(db, symbol, x.Timestamp, x.Open, x.Low, x.High, x.Close, x.Volume)))
                {
                    allNewBars.Add(dbBar);
                }
            }
            db.StoreAll(allNewBars);
            Console.WriteLine("done");
        }