/**
* @param int $left
* @param int $right
* @return array|null
*/
protected function findInsertAfterRange(&$left, &$right)
{
$result = null;
$left = $this->node->getAttribute($this->rightAttribute);
$right = $this->getNodeBehavior()->getNext()->select($this->leftAttribute)->scalar();
if ($right === false) {
$result = $this->getNodeBehavior()->getParent()->select([$this->leftAttribute, $this->rightAttribute])->createCommand()->queryOne();
$right = $result[$this->rightAttribute];
}
$right = (int) $right;
return $result;
}
