internal static IndexRowBookmark?New(IndexRowSet irs)
{
var k = irs._key;
var b = (MTreeBookmark <Serialisable>?)((k.Length != 0) ? irs._ix.rows.PositionAt(k)
: irs._ix.rows.First());
for (; b != null; b = b.Next() as MTreeBookmark <Serialisable> )
{
var rc = irs._tr.Get(b.Value.Item2);
var rb = new IndexRowBookmark(irs, new SRow(irs._tr, rc), b, 0);
if (rc.Matches(rb, irs._wh))
{
return(rb);
}
}
return(null);
}
public override Bookmark <Serialisable>?Next()
{
if (_irs._unique)
{
return(null);
}
for (var b = _mbm.Next(); b != null; b = b.Next())
{
var rc = _irs._tr.Get(b.Value.Item2);
var rb = new IndexRowBookmark(_irs, new SRow(_irs._tr, rc),
(MTreeBookmark <Serialisable>)b, Position + 1);
if (rc.Matches(rb, _irs._wh))
{
return(rb);
}
}
return(null);
}
public override Bookmark <Serialisable>?First()
{
return(IndexRowBookmark.New(this));
}
