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<?php
/**
* Piwik - Open source web analytics
*
* @link http://piwik.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*
* @category Piwik
* @package Piwik
*/
/**
* 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.
*
* @package Piwik
* @subpackage Piwik_API
*/
class Piwik_API_DataTableManipulator_Flattener extends Piwik_API_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 Piwik_DataTable $dataTable
* @return Piwik_DataTable|Piwik_DataTable_Array
*/
public function flatten($dataTable)
{
if ($this->apiModule == 'Actions' || $this->apiMethod == 'getWebsites') {
$this->recursiveLabelSeparator = '/';
}
return $this->manipulate($dataTable);
}
/**
* Template method called from self::manipulate.
* Flatten each data table.
*
* @param Piwik_DataTable $dataTable
* @return Piwik_DataTable
*/
protected function manipulateDataTable($dataTable)
{
if ($this->includeAggregateRows) {
$dataTable->applyQueuedFilters();
}
$newDataTable = $dataTable->getEmptyClone($keepFilters = false);
foreach ($dataTable->getRows() as $row) {
$this->flattenRow($row, $newDataTable);
}
return $newDataTable;
}
/**
* @param Piwik_DataTable_Row $row
* @param Piwik_DataTable $dataTable
* @param string $labelPrefix
* @param bool $parentLogo
*/
private function flattenRow(Piwik_DataTable_Row $row, Piwik_DataTable $dataTable,
$labelPrefix = '', $parentLogo = false)
{
$label = $row->getColumn('label');
if ($label !== false) {
$label = trim($label);
if (substr($label, 0, 1) == '/' && $this->recursiveLabelSeparator == '/') {
$label = substr($label, 1);
}
$label = $labelPrefix . $label;
$row->setColumn('label', $label);
}
$logo = $row->getMetadata('logo');
if ($logo === false && $parentLogo !== false) {
$logo = $parentLogo;
$row->setMetadata('logo', $logo);
}
$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 . $this->recursiveLabelSeparator;
foreach ($subTable->getRows() as $row) {
$this->flattenRow($row, $dataTable, $prefix, $logo);
}
}
}
/**
* Remove the flat parameter from the subtable request
*
* @param array $request
*/
protected function manipulateSubtableRequest(&$request)
{
unset($request['flat']);
}
}
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