public ValueTable Copy(IValue Rows = null, string ColumnNames = null) { ValueTable Result = CopyColumns(ColumnNames); List <ValueTableColumn> columns = GetProcessingColumnList(ColumnNames); // TODO: Переделать это убожество. Свернуть две ветки в одну, сделать соответствие объектов старых колонок и новых. if (Rows == null) { foreach (ValueTableRow row in _rows) { ValueTableRow new_row = Result.Add(); foreach (ValueTableColumn Column in columns) { new_row.Set(ValueFactory.Create(Column.Name), row.Get(Column)); } } } else { ArrayImpl a_Rows = Rows as ArrayImpl; foreach (IValue irow in a_Rows) { ValueTableRow row = irow as ValueTableRow; ValueTableRow new_row = Result.Add(); foreach (ValueTableColumn Column in columns) { new_row.Set(ValueFactory.Create(Column.Name), row.Get(Column)); } } } return(Result); }
private bool CheckFilterCriteria(ValueTableRow Row, StructureImpl Filter) { foreach (KeyAndValueImpl kv in Filter) { ValueTableColumn Column = Columns.FindColumnByName(kv.Key.AsString()); if (Column == null) { throw RuntimeException.PropNotFoundException(kv.Key.AsString()); } IValue current = Row.Get(Column); if (!current.Equals(kv.Value)) { return(false); } } return(true); }
public void GroupBy(string groupColumnNames, string aggregateColumnNames = null) { List <ValueTableColumn> GroupColumns = GetProcessingColumnList(groupColumnNames, true); List <ValueTableColumn> AggregateColumns = GetProcessingColumnList(aggregateColumnNames, true); foreach (ValueTableColumn group_column in GroupColumns) { if (AggregateColumns.Find(x => x.Name == group_column.Name) != null) { throw ColumnsMixedException(group_column.Name); } } var uniqueRows = new Dictionary <ValueTableRow, ValueTableRow>(new RowsByColumnsEqComparer(GroupColumns)); int new_idx = 0; foreach (ValueTableRow row in _rows) { if (uniqueRows.ContainsKey(row)) { ValueTableRow old_row = uniqueRows[row]; foreach (var Column in AggregateColumns) { IValue current = row.Get(Column); if (current.DataType == DataType.Number) { decimal sum = old_row.Get(Column).AsNumber() + current.AsNumber(); old_row.Set(Column, ValueFactory.Create(sum)); } } } else { ValueTableRow new_row = _rows[new_idx++]; foreach (var Column in GroupColumns) { new_row.Set(Column, row.Get(Column)); } foreach (var Column in AggregateColumns) { if (row.Get(Column).DataType != DataType.Number) { new_row.Set(Column, ValueFactory.Create(0)); } else { new_row.Set(Column, row.Get(Column)); } } uniqueRows.Add(new_row, new_row); } } _rows.RemoveRange(new_idx, _rows.Count() - new_idx); int i = 0; while (i < _columns.Count()) { ValueTableColumn Column = _columns.FindColumnByIndex(i); if (GroupColumns.IndexOf(Column) == -1 && AggregateColumns.IndexOf(Column) == -1) { _columns.Delete(Column); } else { ++i; } } }