public static TableList <T> GetTableList <T>(this IDataProvider dp, bool newConn, IDataCommand command, int capacity = 0)
{
TableList <T> result = null;
dp.Read(newConn, command, x => { var tlc = new TLColumnInfo[x.FieldCount]; for (var i = 0; i < tlc.Length; i++)
{
tlc[i] = new TLColumnInfo(x.GetFieldName(i), x.GetFieldType(i));
}
result = new TableList <T>(tlc)
{
Capacity = capacity
}; }
, x => { var v = result.Load((T)x.Get(0)); for (var i = 1; i < v.Length; i++)
{
v[i] = x.Get(i);
}
});
return(result);
}
public static void Test()
{
int rowCount = 1000000; //1mio
var now = DateTime.Now;
var msg = "Hellp from TEST!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!";
object z;
//on release
TableList <long> tl = null;
AppContext.RunBenchmark(() => {
tl = new TableList <long>("0", "1", "2", "3", "4", "5", "6")
{
Capacity = rowCount
}; // { useIndex = true };
for (var i = 0; i < rowCount; i++)
{
//var x = tl.Add(i); x[1] = now; x[2] = msg; x[3] = int.MaxValue; x[4] = long.MaxValue; x[5] = decimal.MaxValue; x[6] = now;
// tl.Add(i, new object[7] { null, now, msg, int.MaxValue, long.MaxValue, decimal.MaxValue, now });
}
tl.AcceptChanges(true);
}, 1, 0, "TableList: " + rowCount);
//first call :total = 766 ms. mem = 144 199 484 //with index and capacity: total = 871 ms. mem = 176 558 412
//second call :total = 649 ms. mem = 184 814 448
AppContext.RunBenchmark(() => { for (var i = 0; i < rowCount; i++)
{
z = tl[tl.FindIndex(i)][3];
}
}, 1, 0, "TableListDirect(get):" + rowCount); //29 ms. mem = 8192
AppContext.RunBenchmark(() => { for (var i = 0; i < rowCount; i++)
{
z = tl[tl.FindIndex(i)][tl.GetColumnIndex("3")];
}
}, 1, 0, "TableListByName(get):" + rowCount); //65 ms. mem = 8192
AppContext.RunBenchmark(() => { var v = tl.Columns[3]; for (var i = 0; i < rowCount; i++)
{
z = tl[tl.FindIndex(i), v];
}
}, 1, 0, "TableListByCol(get):" + rowCount); //57 ms. mem = 8192
/*var v = new System.Data.DataTable();v.BeginLoadData(); ... v.EndLoadData();*/ //total = 7 433 ms. mem = 446 724 640
/*Dictionary<long, int> rowIndex = null; Dictionary<long, Dictionary<long, object>> dict = null; ... dict[rowIndex.GetValue(i, -1)][3];*/ //2 021 ms. mem = 425 202 028 get:65 ms.
/*List<Tuple<long, DateTime, string, int, long, decimal, DateTime>> xx = null;//tuple readonly
* xx = new List<Tuple<long, DateTime, string, int, long, decimal, DateTime>>();...new Tuple<long, DateTime, string, int, long, decimal, DateTime>(...)*/ //218 ms. mem = 104 817 732 with index
/*xx[rowIndex.GetValue(i, -1)].Item3;*/ //30 ms. mem = 8192
/*List<Tuple<long, DateTime, string, int, long, decimal, DateTime, Tuple<long, DateTime, string, int, long, decimal, DateTime>>> xxx = null;
* new Tuple<long, DateTime, string, int, long, decimal, DateTime, Tuple<long, DateTime, string, int, long, decimal, DateTime>>(..., Tuple.Create((long)i, now, msg, int.MaxValue, long.MaxValue, decimal.MaxValue, now)));
* xxx[rowIndex.GetValue(i, -1)].Rest.Item3;*/ // 419 ms. mem = 140 260 856 get:34 ms.
/*List<object[]> lo = null; ... lo.Add(new object[7] { (long)i, now, msg, int.MaxValue, long.MaxValue, decimal.MaxValue, now }); ...lo[rowIndex.GetValue(i, -1)][3] */ //636 ms. mem = 180 817 960 get:30
Dictionary <long, int> rowIndex = null;
List <Tuple <long?, DateTime?, string, int?, long?, decimal?, DateTime?> > xx = null;
AppContext.RunBenchmark(() => {
xx = new List <Tuple <long?, DateTime?, string, int?, long?, decimal?, DateTime?> >();
for (var i = 0; i < rowCount; i++)
{
xx.Add(new Tuple <long?, DateTime?, string, int?, long?, decimal?, DateTime?>(i, now, msg, int.MaxValue, long.MaxValue, decimal.MaxValue, now));
}
rowIndex = new Dictionary <long, int>(rowCount); for (var i = 0; i < rowCount; i++)
{
rowIndex.Add(xx[i].Item1.Value, i);
}
}, 1, 0, "List<Tuple?>: " + rowCount);//total = 262 ms. mem = 136 820 548 !!!!!! для List<T>, где T class с полями как в tuple и инициализация через newT(){x1=i,...} -результат тот же
/*var t0 = new TableList<int>("v", "w", "f");
* var r = t0.Add(1); r[1] = 111; r[2] = -1;
* r = t0.Add(2); r[1] = 222; r[2] = -2;
* r = t0.Add(3); r[1] = 333; r[2] = -3;
* //t0.RebuildIndex();//индекс не нужен, количество записей не большое
* var t1 = new TableList<int>("x", new ColumnInfo<int>("y", t0), new ColumnInfo("z"));
* r = t1.Add(1); r[1] = 1; r[2] = 12;
* r = t1.Add(2); r[1] = 2; r[2] = 22;
* r = t1.Add(3); r[1] = 3; r[2] = 32;
* //t1.RebuildIndex();////индекс не нужен, количество записей не большое
* var t2 = new TableList<long>("a", new ColumnInfo<int>("b", t1), new ColumnInfo<long>("c", null));
* (t2.Columns["c"] as ColumnInfo<long>).LookupTable = t2;
* var r2 = t2.Add(1); r2[1] = 1; r2[2] = 1L;
* for (var i = 2; i < 1000000; i++) { r2 = t2.Add(i); r2[1] = 2; r2[2] = 2L; }
* t2.RebuildIndex();
* t2.ColumnsExpanding = true;
* gridView.OptionsBehavior.ReadOnly = false;
* dataSource = t2;*/
/*if (ot.Count < 5000) { grid.DataSource = ot; gridView.PopulateColumns(); } ;// до 5 000 отктырвает 1 сек, до 100 000 держит, но медленно
* else { gridView.CustomUnboundColumnData += (s, e) => { if (e.IsGetData) e.Value = ((object[])e.Row)[(int)e.Column.Tag]; };
* gridView.Columns.Clear();
* foreach (var c in ot.Columns) { var clm = gridView.Columns.AddVisible(c.Key); clm.Tag = clm.VisibleIndex = c.Value.Index; clm.UnboundType = DevExpress.Data.UnboundColumnType.String; }
* grid.DataSource = new DevExpress.Data.PLinq.PLinqServerModeSource() { Source = ot };// тут данные уже в строке не редактируются (видимо источник данных не поддерживает)
* }*///для pivot PLinqServerModeSource - не применяется, но и так быстро работает (но нужно указывать правильный тип колокни f.CellFormat.FormatType = f.ValueFormat.FormatType = FormatType.Numeric;)
Console.ReadKey();
}