public void FilterRecords(List <PerformerStatRecord> allRecords, out string errorStr)
{
var func = FilterFunction.FirstOrDefault(i => i.Value == FunctionSelectedComment) ?? FilterFunction[0];
var formula = func.Text;
var resolver = CheckFunction(formula, out errorStr);
if (resolver == null)
{
return;
}
var resolverVars = resolver.GetVariableNames();
var records = allRecords.ToList();
var calcError = "";
records.ForEach(r =>
{
// заполнить переменные resolver-а
var varValue = new Dictionary <string, double>();
foreach (var name in resolverVars)
{
var val = formulaProperties[name].GetValue(r);
double dVal = val is float
?(float)val
: val is double
?(double)val
: val is int?(int)val: val is decimal ? (float)(decimal)val : 0;
varValue.Add(name, dVal);
}
// посчитать
try
{
double rst;
resolver.Calculate(varValue, out rst);
r.FunctionValue = rst;
}
catch (Exception ex)
{
calcError = Resource.ErrorMessageCalculationFunctions + " '" + formula + "': " + ex.Message;
r.FunctionValue = 0;
}
});
if (!string.IsNullOrEmpty(calcError))
{
errorStr = calcError;
}
// вернуть первые N
Records = (Order == SelectOrder.First
? records.OrderByDescending(r => r.FunctionValue)
: records.OrderBy(r => r.FunctionValue)).Take(CountAccount).ToList();
}
public static void AddFunction(string function, string description)
{
var func = FilterFunction.FirstOrDefault(f => f.Text == function);
if (func != null)
{
func.Value = description;
}
else
{
FilterFunction.Add(new SelectListItem {
Value = description, Text = function
});
}
// сохранить настройки
SiteSettings.Instance.FunctionSettings.Functions = FilterFunction.Select(i => new TraderFilterFunction(i)).ToList();
SiteSettings.Instance.SaveSettings();
}
public static void DeleteFunction(string function)
{
if (FilterFunction.Count <= 1)
{
return;
}
var func = FilterFunction.FirstOrDefault(f => f.Text == function);
if (func == null)
{
return;
}
FilterFunction.Remove(func);
// сохранить настройки
SiteSettings.Instance.FunctionSettings.Functions = FilterFunction.Select(i => new TraderFilterFunction(i)).ToList();
SiteSettings.Instance.SaveSettings();
}
