/**
* Checks, if all necesarry parameters for this operation are provided
*
* @param unknown $params
*/
public function checkParams($params)
{
if (parent::checkParams($params)) {
$name_with_idx = $this->getNameWithIdx();
if (empty($params['dataset'][$name_with_idx . '_tz'])) {
return false;
}
return true;
} else {
return false;
}
}
