private void AddBaseTableColumns(IReactiveTable table)
{
foreach (var column in table.Columns)
{
_columns.AddColumn(column);
}
}
/// <summary>
/// Group the source table by the given column
/// </summary>
/// <param name="columnId"></param>
/// <typeparam name="T"></typeparam>
/// <returns></returns>
/// <exception cref="ArgumentException"></exception>
public IReactiveColumn GroupBy <T>(string columnId)
{
var column = (IReactiveColumn <T>)_sourceTable.GetColumnByName(columnId);
if (_groupColumns.ContainsKey(column.ColumnId))
{
throw new ArgumentException($"Column {column.ColumnId} is already in group by statement",
"columnId");
}
var keyColumn = new HashcodeAccessor <T>(column);
_keyColumns.Add(keyColumn);
_groupColumns.Add(columnId, column);
_allColumns.AddColumn(column);
return(column);
}
