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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
*/
namespace Piwik\DataTable\Filter;
use Exception;
use Piwik\DataTable;
use Piwik\DataTable\Filter;
use Piwik\DataTable\Filter\Pattern;
use Piwik\DataTable\Manager;
/**
* Delete all rows for which
* - the given $columnToFilter do not contain the $patternToSearch
* - AND all the subTables associated to this row do not contain the $patternToSearch
*
* This filter is to be used on columns containing strings.
* Example: from the pages viewed report, keep only the rows that contain "piwik" or for which a subpage contains "piwik".
*
* @package Piwik
* @subpackage DataTable
*/
class PatternRecursive extends Filter
{
private $columnToFilter;
private $patternToSearch;
private $patternToSearchQuoted;
/**
* @param DataTable $table
* @param string $columnToFilter
* @param string $patternToSearch
*/
public function __construct($table, $columnToFilter, $patternToSearch)
{
parent::__construct($table);
$this->patternToSearch = $patternToSearch;
$this->patternToSearchQuoted = Pattern::getPatternQuoted($patternToSearch);
$this->patternToSearch = $patternToSearch; //preg_quote($patternToSearch);
$this->columnToFilter = $columnToFilter;
}
/**
* @param DataTable $table
* @return int
*/
public function filter($table)
{
$rows = $table->getRows();
foreach ($rows as $key => $row) {
// A row is deleted if
// 1 - its label doesnt contain the pattern
// AND 2 - the label is not found in the children
$patternNotFoundInChildren = false;
try {
$idSubTable = $row->getIdSubDataTable();
$subTable = Manager::getInstance()->getTable($idSubTable);
// we delete the row if we couldn't find the pattern in any row in the
// children hierarchy
if ($this->filter($subTable) == 0) {
$patternNotFoundInChildren = true;
}
} catch (Exception $e) {
// there is no subtable loaded for example
$patternNotFoundInChildren = true;
}
if ($patternNotFoundInChildren
&& !Pattern::match($this->patternToSearch, $this->patternToSearchQuoted, $row->getColumn($this->columnToFilter), $invertedMatch = false)
) {
$table->deleteRow($key);
}
}
return $table->getRowsCount();
}
}
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