public RowType.Locator GetLocator(string name)
{
RowType.Locator locator = new RowType.Locator();
if (GetLocator(name, ref locator))
return locator;
else
throw new ESQLException(Properties.Resources.InvalidIdentifier, name);
}
public RowType.Locator GetLocator(int ordinal)
{
foreach (ColumnBinding b in _columnBinding)
{
if (ordinal-- == 0)
{
RowType.Locator loc = new RowType.Locator();
loc.master = b.rnum;
if (b.snum != -1)
loc.detail = b.snum;
return loc;
}
}
throw new ESQLException(Properties.Resources.BadOrderByItem, ordinal);
}
public override Resultset Get(QueryContext queryContext, object[] parameters)
{
Resultset source = ChildNodes[0].Get(queryContext, parameters);
RowType.Locator[] locator = new RowType.Locator[_columns.Length];
int[] way = new int[_columns.Length];
Binder binder = new Binder(source);
for (int k = 0; k < _columns.Length; k++)
{
Column col = _columns[k];
locator[k] = col.Name is String ? binder.GetLocator((string)col.Name) :
binder.GetLocator(((int)col.Name) - 1);
way[k] = col.Direction ==
SortDirection.Descending ? -1 : 1;
}
return new Resultset(source.RowType, new SorterContext(source,
new ComplexComparer(locator, way)));
}
