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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\BaseFilter;
use Piwik\DataTable;
/**
* Deletes rows that do not contain a column that matches a regex pattern and do not contain a
* subtable that contains a column that matches a regex pattern.
*
* **Example**
*
* // only display index pageviews in Actions.getPageUrls
* $dataTable->filter('PatternRecursive', array('label', 'index'));
*
* @api
*/
class PatternRecursive extends BaseFilter
{
private $columnToFilter;
private $patternToSearch;
private $patternToSearchQuoted;
/**
* Constructor.
*
* @param DataTable $table The table to eventually filter.
* @param string $columnToFilter The column to match with the `$patternToSearch` pattern.
* @param string $patternToSearch The regex pattern to use.
*/
public function __construct($table, $columnToFilter, $patternToSearch)
{
parent::__construct($table);
$this->patternToSearch = $patternToSearch;
$this->patternToSearchQuoted = Pattern::getPatternQuoted($patternToSearch);
$this->patternToSearch = $patternToSearch; //preg_quote($patternToSearch);
$this->columnToFilter = $columnToFilter;
}
/**
* See {@link PatternRecursive}.
*
* @param DataTable $table
* @return int The number of deleted rows.
*/
public function filter($table)
{
$rows = $table->getRows();
foreach ($rows as $key => $row) {
// A row is deleted if
// 1 - its label doesn't contain the pattern
// AND 2 - the label is not found in the children
$patternNotFoundInChildren = false;
$subTable = $row->getSubtable();
if (!$subTable) {
$patternNotFoundInChildren = true;
} else {
// we delete the row if we couldn't find the pattern in any row in the
// children hierarchy
if ($this->filter($subTable) == 0) {
$patternNotFoundInChildren = true;
}
}
if ($patternNotFoundInChildren
&& !Pattern::match($this->patternToSearchQuoted, $row->getColumn($this->columnToFilter), $invertedMatch = false)
) {
$table->deleteRow($key);
}
}
return $table->getRowsCount();
}
}
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