internal void AddDependency(Column baseColumn, Column computationColumn, bool isDirect)
{
Debug.Assert(baseColumn.ParentModel != null);
Debug.Assert(computationColumn.ParentModel != null);
AddDependency(_indirectDependencies, baseColumn, computationColumn);
if (isDirect)
{
AddDependency(_directDependencies, baseColumn, computationColumn);
baseColumn.TryMakeConcrete();
AddComputationColumn(_computationColumns, computationColumn.ParentModel, computationColumn);
if (computationColumn.ParentModel.Depth < baseColumn.ParentModel.Depth)
{
AddComputationColumn(_aggregateColumns, baseColumn.ParentModel, computationColumn);
}
}
}