public function Compare($x, $y)
{
$orderresult = parent::Compare($x->getOrderByKey(), $y->getOrderByKey());
//only use thenby if the the orderby elements are the same.
if ($orderresult != 0) {
return $orderresult;
} else {
return $this->thenby->Compare($x->getThenByKey(), $y->getThenByKey());
}
}
public function Compare($x, $y)
{
$xkey = call_user_func_array($this->keyselector, array($x));
$ykey = call_user_func_array($this->keyselector, array($y));
return parent::Compare($xkey, $ykey);
}
public function Compare($x, $y)
{
//call the parent comparer but swap order of elements to turn into a descending comparer.
return parent::Compare($y, $x);
}
