public override RowSet RowSet(STransaction tr, SQuery top, SDict <long, SFunction> ags, Context cx)
{
for (var b = order.First(); b != null; b = b.Next())
{
ags = b.Value.col.Aggregates(ags, cx);
}
var ags1 = ags;
for (var b = cpos.First(); b != null; b = b.Next())
{
ags1 = b.Value.Item2.Aggregates(ags1, cx);
}
RowSet r = new SelectRowSet(qry.RowSet(tr, this, ags1, cx), this, ags, cx);
// perform another pass on the selectlist just in case
if (!(qry is SGroupQuery))
{
for (var b = cpos.First(); b != null; b = b.Next())
{
ags = b.Value.Item2.Aggregates(ags, cx);
}
if (ags.Length != 0)
{
r = new EvalRowSet(((SelectRowSet)r)._source, this, ags, cx);
}
}
if (distinct)
{
r = new DistinctRowSet(r);
}
if (order.Length != 0)
{
r = new OrderedRowSet(r, this, cx);
}
return(r);
}
internal static OrderedBookmark?New(OrderedRowSet ors)
{
return((ors._tree.First() is MTreeBookmark <Serialisable> rb) ?
new OrderedBookmark(ors, rb, 0) : null);
}
OrderedBookmark(OrderedRowSet ors, MTreeBookmark <Serialisable> bmk, int pos)
: base(ors, ors._rows[(int)bmk.Value.Item2], pos)
{
_ors = ors; _bmk = bmk;
}