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<?php
/**
* Piwik - free/libre analytics platform
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
*/
namespace Piwik\API\DataTableManipulator;
use Piwik\API\DataTableManipulator;
use Piwik\Common;
use Piwik\DataTable;
use Piwik\DataTable\Row;
/**
* This class is responsible for flattening data tables.
*
* It loads subtables and combines them into a single table by concatenating the labels.
* This manipulator is triggered by using flat=1 in the API request.
*/
class Flattener extends DataTableManipulator
{
private $includeAggregateRows = false;
/**
* If the flattener is used after calling this method, aggregate rows will
* be included in the result. This can be useful when they contain data that
* the leafs don't have (e.g. conversion stats in some cases).
*/
public function includeAggregateRows()
{
$this->includeAggregateRows = true;
}
/**
* Separator for building recursive labels (or paths)
* @var string
*/
public $recursiveLabelSeparator = '';
/**
* @param DataTable $dataTable
* @param string $recursiveLabelSeparator
* @return DataTable|DataTable\Map
*/
public function flatten($dataTable, $recursiveLabelSeparator)
{
$this->recursiveLabelSeparator = $recursiveLabelSeparator;
return $this->manipulate($dataTable);
}
/**
* Template method called from self::manipulate.
* Flatten each data table.
*
* @param DataTable $dataTable
* @return DataTable
*/
protected function manipulateDataTable($dataTable)
{
$newDataTable = $dataTable->getEmptyClone($keepFilters = true);
// this recursive filter will be applied to subtables
$dataTable->filter('ReplaceSummaryRowLabel');
$dataTable->filter('ReplaceColumnNames');
$this->flattenDataTableInto($dataTable, $newDataTable);
return $newDataTable;
}
/**
* @param $dataTable DataTable
* @param $newDataTable
*/
protected function flattenDataTableInto($dataTable, $newDataTable, $prefix = '', $logo = false)
{
foreach ($dataTable->getRows() as $rowId => $row) {
$this->flattenRow($row, $rowId, $newDataTable, $prefix, $logo);
}
}
/**
* @param Row $row
* @param DataTable $dataTable
* @param string $labelPrefix
* @param bool $parentLogo
*/
private function flattenRow(Row $row, $rowId, DataTable $dataTable,
$labelPrefix = '', $parentLogo = false)
{
$label = $row->getColumn('label');
if ($label !== false) {
$label = trim($label);
if ($this->recursiveLabelSeparator == '/') {
if (substr($label, 0, 1) == '/') {
$label = substr($label, 1);
} elseif ($rowId === DataTable::ID_SUMMARY_ROW && $labelPrefix && $label != DataTable::LABEL_SUMMARY_ROW) {
$label = ' - ' . $label;
}
}
$label = $labelPrefix . $label;
$row->setColumn('label', $label);
}
$logo = $row->getMetadata('logo');
if ($logo === false && $parentLogo !== false) {
$logo = $parentLogo;
$row->setMetadata('logo', $logo);
}
/** @var DataTable $subTable */
$subTable = $row->getSubtable();
if ($subTable) {
$subTable->applyQueuedFilters();
$row->deleteMetadata('idsubdatatable_in_db');
} else {
$subTable = $this->loadSubtable($dataTable, $row);
}
$row->removeSubtable();
if ($subTable === null) {
if ($this->includeAggregateRows) {
$row->setMetadata('is_aggregate', 0);
}
$dataTable->addRow($row);
} else {
if ($this->includeAggregateRows) {
$row->setMetadata('is_aggregate', 1);
$dataTable->addRow($row);
}
$prefix = $label . $this->recursiveLabelSeparator;
$this->flattenDataTableInto($subTable, $dataTable, $prefix, $logo);
}
}
/**
* Remove the flat parameter from the subtable request
*
* @param array $request
* @return array
*/
protected function manipulateSubtableRequest($request)
{
unset($request['flat']);
return $request;
}
}
|
