is::checkNodeExists

static function checkNodeExists($id)
{
	$parentColName = static::getPARENTIDColumnName();
	$idColName = static::getIDColumnName();

	$id = intval($id);
	if(!$id)
	{
		return false;
	}

	$item = MainHttpApplication::getConnection()->query("select ".$idColName." from ".static::getTableName()." where ".$idColName." = '".$id."' and ".$parentColName." = '".$id."'")->fetch();
	return is_array($item);
}