public function addSitePrivileges()
    {
        if ($this->addSitePrivilegeStatement == null) {
            $this->addSitePrivilegeStatement = $this->connection->prepare("
              INSERT INTO UserPrivileges (username, rootPrivileges, sitePrivileges, pageId) VALUES (?,0,1,NULL)");
        }
        $this->addSitePrivilegeStatement->execute(array($this->user->getUsername()));
        $this->sitePrivilege = 1;
    }