public SimpleGroupTestViewModel()
{
_table1 = new ReactiveTable();
var groupColumn = new ReactiveColumn <string>(GroupColumnId);
_table1.AddColumn(groupColumn);
var valueColumn = new ReactiveColumn <int>(ValueColumnId);
_table1.AddColumn(valueColumn);
// ReactiveTable table2 = new ReactiveTable();
// table2.AddColumn(new ReactiveColumn<string>("GroupColumn2"));
// table2.AddColumn(new ReactiveColumn<int>("ValueColumn2"));
_groupedTable = new AggregatedTable(_table1);
_groupedTable.GroupBy <string>(groupColumn.ColumnId);
_groupedTable.AddAggregate(groupColumn, CountColumnId, () => new Count <string>());
_groupedTable.AddAggregate(valueColumn, SumColumnId, () => new Sum <int>());
_groupedTable.AddAggregate(valueColumn, AverageColumnId, () => new Average <int>());
_groupedTable.AddAggregate(valueColumn, MinColumnId, () => new Min <int>());
_groupedTable.AddAggregate(valueColumn, MaxColumnId, () => new Max <int>());
LoadDataCommand = new DelegateCommand(LoadData);
Items = new ObservableCollection <SimpleGroupItem>();
_groupedTable.RowUpdates().Subscribe(OnRowUpdate);
}
public ReactiveTable()
{
var type = typeof(T);
foreach (var propertyInfo in type.GetProperties(BindingFlags.Public | BindingFlags.Instance)
.Where(p => p.GetCustomAttribute <CalculatedColumnAttribute>() == null))
{
AddColumn(ReactiveColumn.Create($"{type.Name}.{propertyInfo.Name}", propertyInfo.PropertyType));
}
var token = Subscribe(update =>
{
if (update.Action == TableUpdateAction.Add)
{
var item = new T();
item.SetTable(this);
item.SetRowIndex(update.RowIndex);
ChangeNotifier.RegisterPropertyNotifiedConsumer(item, update.RowIndex);
Flyweights.Add(item);
}
else if (update.Action == TableUpdateAction.Delete)
{
// TODO: Look at efficiency of this
var item = Flyweights[update.RowIndex];
ChangeNotifier.UnregisterPropertyNotifiedConsumer(item, update.RowIndex);
Flyweights.RemoveAt(update.RowIndex);
}
});
}
private static ReactiveTable GetRatesTable()
{
var fxRates = new ReactiveTable();
fxRates.AddColumn(new ReactiveColumn <string>(FxTableDefinitions.FxRates.CcyPairId));
fxRates.AddColumn(new ReactiveColumn <double>(FxTableDefinitions.FxRates.Bid));
fxRates.AddColumn(new ReactiveColumn <double>(FxTableDefinitions.FxRates.Ask));
fxRates.AddColumn(new ReactiveColumn <double>(FxTableDefinitions.FxRates.Open));
fxRates.AddColumn(new ReactiveColumn <double>(FxTableDefinitions.FxRates.Close));
fxRates.AddColumn(new ReactiveColumn <double>(FxTableDefinitions.FxRates.YearRangeStart));
fxRates.AddColumn(new ReactiveColumn <double>(FxTableDefinitions.FxRates.YearRangeEnd));
fxRates.AddColumn(new ReactiveColumn <double>(FxTableDefinitions.FxRates.Change));
var timeColumn = new ReactiveColumn <DateTime>(FxTableDefinitions.FxRates.Time);
fxRates.AddColumn(timeColumn);
// var tickColumn = new ReactiveColumn<long>(FxTableDefinitions.FxRates.Ticks);
// fxRates.AddColumn(tickColumn);
fxRates.AddColumn(new ReactiveCalculatedColumn1 <double, DateTime>(CalculateColumns.FxRates.LongTime,
timeColumn,
time => (DateTime.UtcNow - time).TotalMilliseconds));
/*fxRates.AddColumn(new ReactiveCalculatedColumn1<long, long>(CalculateColumns.FxRates.Micros,
* tickColumn,
* tickStart =>
* {
* var ticksElapsed = DateTime.Now.Ticks - _start.Ticks;
* return (ticksElapsed - tickStart) * 10;
* }));*/
return(fxRates);
}
public void TestGrouping()
{
var table1 = new ReactiveTable();
var GroupColumnId = "GroupCol";
var groupColumn = new ReactiveColumn <string>(GroupColumnId);
table1.AddColumn(groupColumn);
var ValueColumnId = "ValueCol";
var reactiveColumn = new ReactiveColumn <int>(ValueColumnId);
var valueColumn = reactiveColumn;
table1.AddColumn(valueColumn);
// ReactiveTable table2 = new ReactiveTable();
// table2.AddColumn(new ReactiveColumn<string>("GroupColumn2"));
// table2.AddColumn(new ReactiveColumn<int>("ValueColumn2"));
var groupedTable = new AggregatedTable(table1);
groupedTable.GroupBy <string>(groupColumn.ColumnId);
var CountColumnId = "Count";
groupedTable.AddAggregate(groupColumn, CountColumnId, () => new Count <string>());
var SumColumnId = "Sum";
groupedTable.AddAggregate(valueColumn, SumColumnId, () => new Sum <int>());
var AverageColumnId = "Average";
groupedTable.AddAggregate(valueColumn, AverageColumnId, () => new Average <int>());
var MinColumnId = "Min";
groupedTable.AddAggregate(valueColumn, MinColumnId, () => new Min <int>());
var MaxColumnId = "Max";
groupedTable.AddAggregate(valueColumn, MaxColumnId, () => new Max <int>());
RunTest(
count =>
{
for (var i = 0; i < count; i++)
{
var name1 = "Mendel" + i;
var name2 = "Marie" + i;
AddRow(name1, 42, table1, GroupColumnId, ValueColumnId);
AddRow(name2, 43, table1, GroupColumnId, ValueColumnId);
AddRow(name1, 44, table1, GroupColumnId, ValueColumnId);
AddRow(name2, 45, table1, GroupColumnId, ValueColumnId);
AddRow(name1, 46, table1, GroupColumnId, ValueColumnId);
AddRow(name2, 45, table1, GroupColumnId, ValueColumnId);
}
}, 10000);
}
public CalculatedColumnTableTest()
{
_table = new ReactiveTable();
var idCol = new ReactiveColumn <int>("IdCol");
_table.AddColumn(idCol);
var textCol = new ReactiveColumn <string>("TextCol");
_table.AddColumn(textCol);
var valueCol = new ReactiveColumn <decimal>("ValueCol");
_table.AddColumn(valueCol);
_table.AddColumn(new ReactiveCalculatedColumn2 <decimal, int, decimal>(
"CalcCol1", idCol, valueCol, (id, val) => id * val));
_table.AddColumn(new ReactiveCalculatedColumn2 <string, int, string>(
"CalcCol2", idCol, textCol, (id, text) => text + id));
}
public GroupedTableTest(int?drainTableLimit = null)
{
_drainTableLimit = drainTableLimit;
_table1 = new ReactiveTable();
var groupColumn = new ReactiveColumn <string>(GroupColumnId);
_table1.AddColumn(groupColumn);
var valueColumn = new ReactiveColumn <int>(ValueColumnId);
_table1.AddColumn(valueColumn);
var groupedTable = new AggregatedTable(_table1);
groupedTable.GroupBy <string>(groupColumn.ColumnId);
groupedTable.AddAggregate(groupColumn, CountColumnId, () => new Count <string>());
groupedTable.AddAggregate(valueColumn, SumColumnId, () => new Sum <int>());
groupedTable.AddAggregate(valueColumn, AverageColumnId, () => new Average <int>());
groupedTable.AddAggregate(valueColumn, MinColumnId, () => new Min <int>());
groupedTable.AddAggregate(valueColumn, MaxColumnId, () => new Max <int>());
}