public override void AddRequiredColumns(IDictionary <string, DataSource> dataSources, IDictionary <string, Type> parameterTypes, IList <string> requiredColumns)
{
var mappings = ColumnSet.Where(col => !col.AllColumns).ToDictionary(col => col.OutputColumn, col => col.SourceColumn);
ColumnSet.Clear();
// Map the aliased names to the base names
for (var i = 0; i < requiredColumns.Count; i++)
{
if (requiredColumns[i].StartsWith(Alias + "."))
{
requiredColumns[i] = requiredColumns[i].Substring(Alias.Length + 1);
if (!mappings.TryGetValue(requiredColumns[i], out var sourceCol))
{
sourceCol = requiredColumns[i];
}
ColumnSet.Add(new SelectColumn
{
SourceColumn = sourceCol,
OutputColumn = requiredColumns[i]
});
requiredColumns[i] = sourceCol;
}
}
Source.AddRequiredColumns(dataSources, parameterTypes, requiredColumns);
}
