private void ExpandCompositeOrderings(OrderByClause orderByClause)
{
var orderings = orderByClause.Orderings;
var copy = new Ordering[orderings.Count];
orderings.CopyTo(copy, 0);
copy.Apply(o => orderings.Remove(o));
foreach (var o in copy)
{
if (o.Expression is LuceneCompositeOrderingExpression)
{
var ex = (LuceneCompositeOrderingExpression) o.Expression;
ex.Fields.Apply(f => orderings.Add(new Ordering(f, o.OrderingDirection)));
}
else
{
orderings.Add(o);
}
}
}
