/**
* Filter a DataTable instance. See @filter for more info.
*
* @param DataTable\Simple|DataTable\Map $dataTable
* @return mixed
*/
protected function manipulateDataTable($dataTable)
{
$result = $dataTable->getEmptyClone();
foreach ($this->labels as $labelIndex => $label) {
$row = null;
foreach ($this->getLabelVariations($label) as $labelVariation) {
$labelVariation = explode(self::SEPARATOR_RECURSIVE_LABEL, $labelVariation);
$row = $this->doFilterRecursiveDescend($labelVariation, $dataTable);
if ($row) {
if ($this->addLabelIndex) {
$row->setMetadata(self::FLAG_IS_ROW_EVOLUTION, $labelIndex);
}
$result->addRow($row);
break;
}
}
}
return $result;
}
