* interface instead of a class when we try to overload
* a method with both.
*/
if( rs instanceof ProjectRestrictResultSet)
{
ProjectRestrictResultSet prrs = (ProjectRestrictResultSet) rs;
int subqueryTrackingArrayLength =
(prrs.subqueryTrackingArray == null) ? 0 :
prrs.subqueryTrackingArray.length;
ResultSetStatistics[] subqueryTrackingArray =
new ResultSetStatistics[subqueryTrackingArrayLength];