private static int Compare(OrderByColumn c, RowHolder x, RowHolder y)
{
IComparable left = QueryProcessingAccessors.MetadataColumnRowsetHolderFetcher(c.column, x);
IComparable right = QueryProcessingAccessors.MetadataColumnRowsetHolderFetcher(c.column, y);
return((c.direction == OrderByColumn.Direction.Asc) ? left.CompareTo(right) : right.CompareTo(left));
}
private OrderByColumn[] GetOrderByColumns(MetadataColumn[] columns, FSharpList <Tuple <string, Sql.dir> > orderBy)
{
OrderByColumn[] orderByColumns = new OrderByColumn[orderBy.Length];
for (int i = 0; i < orderBy.Length; ++i)
{
MetadataColumn column = QueryProcessingAccessors.GetMetadataColumn(orderBy[i].Item1, columns);
OrderByColumn.Direction direction = orderBy[i].Item2 == Sql.dir.Asc ? OrderByColumn.Direction.Asc : OrderByColumn.Direction.Desc;
orderByColumns[i] = new OrderByColumn(column, direction);
}
return(orderByColumns);
}