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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 creates a row from a given DataTable.
* The row contains
* - for each numeric column, the returned "summary" column is the sum of all the subRows
* - for every other column, it is ignored and will not be in the "summary row"
*
* @see Piwik_DataTable_Row::sumRow() for more information on the algorithm
*
* @package Piwik
* @subpackage Piwik_DataTable
*/
class Piwik_DataTable_Row_DataTableSummary extends Piwik_DataTable_Row
{
/**
* @param Piwik_DataTable $subTable
*/
function __construct($subTable = null)
{
parent::__construct();
if ($subTable !== null)
{
$this->sumTable($subTable);
}
}
/**
* Reset this row to an empty one and sum the associated subtable again.
*/
public function recalculate()
{
$id = $this->getIdSubDataTable();
if ($id !== null)
{
$subtable = Piwik_DataTable_Manager::getInstance()->getTable($id);
$this->sumTable($subtable);
}
}
/**
* Sums a tables row with this one.
*
* @param Piwik_DataTable $table
*/
private function sumTable( $table )
{
foreach($table->getRows() as $row)
{
$this->sumRow($row, $enableCopyMetadata = false);
}
}
}
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