/// <summary>
/// Calculates aggregated value for specific field
/// </summary>
/// <param name="field">field</param>
/// <param name="func">aggregation name</param>
/// <returns>Calculated aggregation</returns>
private double CalcValue(FieldModel field, string func)
{
if (field.Type == ColumnType.stringType)
{
var validDataColumnIndexes = DataColumnIndexes.Where(index => Data.GetColumn <string>(field.UniqueName)[index] != null).DefaultIfEmpty(-1).ToArray();
if (validDataColumnIndexes[0] == -1)
{
return(0);
}
if (func == "count")
{
return(validDataColumnIndexes.Count());
}
if (func == "distinctcount")
{
return(validDataColumnIndexes.Select(index => Data.GetColumn <string>(field.UniqueName)[index]).Distinct().ToList().Count);
}
}
if (field.Type == ColumnType.doubleType || field.Type == ColumnType.dateType)
{
var validDataColumnIndexes = DataColumnIndexes.Where(index => Data.GetColumn <double?>(field.UniqueName)[index].HasValue).DefaultIfEmpty(-1).ToArray();
var column = Data.GetColumn <double?>(field.UniqueName);
if (validDataColumnIndexes[0] == -1)
{
return(double.NaN);
}
if (func == "count")
{
return(validDataColumnIndexes.Count());
}
if (func == "distinctcount")
{
return(validDataColumnIndexes.Select(index => column[index]).Distinct().ToList().Count);
}
if (func == "sum" || func == "none")
{
return(validDataColumnIndexes.Sum(index => column[index].Value));
}
if (func == "average")
{
return(validDataColumnIndexes.Average(index => column[index].Value));
}
if (func == "min")
{
return(validDataColumnIndexes.Min(index => column[index].Value));
}
if (func == "max")
{
return(validDataColumnIndexes.Max(index => column[index].Value));
}
}
return(0);
}
/// <summary>
/// Filters data
/// </summary>
/// <param name="filters">filters to apply</param>
public void FilterData(List <Filter> filters)
{
if (filters.Count == 0)
{
return;
}
foreach (var filter in filters)
{
filter.Field.Type = _columnNameTypes[filter.Field.UniqueName];
if (filter.Value == null)
{
ParallelQuery <int> indexes = DataColumnIndexes.AsParallel();
if (filter.Include != null)
{
if (filter.Field.Type == ColumnType.stringType)
{
CheckIncludeFilter(Data.GetColumn <string>(filter.Field.UniqueName), filter.Include, ref indexes);
}
else
{
CheckIncludeFilter(Data.GetColumn <double?>(filter.Field.UniqueName), filter.Include, ref indexes);
}
}
else if (filter.Exclude != null)
{
if (filter.Field.Type == ColumnType.stringType)
{
CheckExcludeFilter(Data.GetColumn <string>(filter.Field.UniqueName), filter.Exclude, ref indexes);
}
else
{
CheckExcludeFilter(Data.GetColumn <double?>(filter.Field.UniqueName), filter.Exclude, ref indexes);
}
}
else if (filter.Query != null)
{
if (filter.Field.Type == ColumnType.doubleType)
{
var column = Data.GetColumn <double?>(filter.Field.UniqueName);
indexes = indexes.Where(index => CheckNumberFilterQuery(column[index], filter.Query));
}
else if (filter.Field.Type == ColumnType.stringType)
{
var column = Data.GetColumn <string>(filter.Field.UniqueName);
indexes = indexes.Where(index => CheckStringFilterQuery(column[index], filter.Query));
}
else if (filter.Field.Type == ColumnType.dateType)
{
var column = Data.GetColumn <double?>(filter.Field.UniqueName);
indexes = indexes.Where(index => CheckDateFilterQuery(column[index], filter.Query));
}
}
DataColumnIndexes = indexes.ToArray();
}
if (filter.Value != null)
{
filter.Value.Field.Type = _columnNameTypes[filter.Value.Field.UniqueName];
var calculatedTotalsAggregation = new List <Aggregation>();
CalcByFields(new List <FieldModel> {
filter.Field
}, null, new List <FieldFuncValue> {
filter.Value
}, ref calculatedTotalsAggregation);
var calculatedTotals = new Dictionary <object, double>();
foreach (var agg in calculatedTotalsAggregation)
{
calculatedTotals.Add(agg.Keys[filter.Field.UniqueName], agg.Values[filter.Value.Field.UniqueName][filter.Value.Func]);
}
CheckValueFilterQuery(ref calculatedTotals, filter);
if (filter.Field.Type == ColumnType.stringType)
{
var column = Data.GetColumn <string>(filter.Field.UniqueName);
DataColumnIndexes = DataColumnIndexes.Where(index => calculatedTotals.ContainsKey(column[index])).ToArray();
}
else
{
var column = Data.GetColumn <double?>(filter.Field.UniqueName);
DataColumnIndexes = DataColumnIndexes.Where(index => calculatedTotals.ContainsKey(column[index])).ToArray();
}
}
}
}
