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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\DataTable\Filter;
use Piwik\DataTable;
use Piwik\DataTable\BaseFilter;
/**
* Executes a filter for each row of a {@link DataTable} and generates a segment filter for each row.
* It will map the label column to a segmentValue by searching for the label in the index of the given
* mapping array.
*
* **Basic usage example**
*
* $dataTable->filter('AddSegmentByLabelMapping', array('segmentName', array('1' => 'smartphone, '2' => 'desktop')));
*
* @api
*/
class AddSegmentByLabelMapping extends BaseFilter
{
private $segment;
private $mapping;
/**
* @param DataTable $table
* @param string $segment
* @param array $mapping
*/
public function __construct($table, $segment, $mapping)
{
parent::__construct($table);
$this->segment = $segment;
$this->mapping = $mapping;
}
/**
* See {@link AddSegmentByLabelMapping}.
*
* @param DataTable $table
*/
public function filter($table)
{
if (empty($this->segment) || empty($this->mapping)) {
return;
}
foreach ($table->getRows() as $row) {
$label = $row->getColumn('label');
if (!empty($this->mapping[$label])) {
$label = $this->mapping[$label];
$row->setMetadata('segment', $this->segment . '==' . urlencode($label));
}
}
}
}
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