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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
*/
use Piwik\Common;
use Piwik\DataTable;
use Piwik\DataTable\Filter\AddColumnsProcessedMetricsGoal;
/**
* @package Piwik
* @subpackage Piwik_API
*/
class Piwik_API_DataTableGenericFilter
{
private static $genericFiltersInfo = null;
/**
* Constructor
*
* @param $request
*/
function __construct($request)
{
$this->request = $request;
}
/**
* Filters the given data table
*
* @param DataTable $table
*/
public function filter($table)
{
$this->applyGenericFilters($table);
}
/**
* Returns an array containing the information of the generic Filter
* to be applied automatically to the data resulting from the API calls.
*
* Order to apply the filters:
* 1 - Filter that remove filtered rows
* 2 - Filter that sort the remaining rows
* 3 - Filter that keep only a subset of the results
* 4 - Presentation filters
*
* @return array See the code for spec
*/
public static function getGenericFiltersInformation()
{
if (is_null(self::$genericFiltersInfo)) {
self::$genericFiltersInfo = array(
'Pattern' => array(
'filter_column' => array('string', 'label'),
'filter_pattern' => array('string'),
),
'PatternRecursive' => array(
'filter_column_recursive' => array('string', 'label'),
'filter_pattern_recursive' => array('string'),
),
'ExcludeLowPopulation' => array(
'filter_excludelowpop' => array('string'),
'filter_excludelowpop_value' => array('float', '0'),
),
'AddColumnsProcessedMetrics' => array(
'filter_add_columns_when_show_all_columns' => array('integer')
),
'AddColumnsProcessedMetricsGoal' => array(
'filter_update_columns_when_show_all_goals' => array('integer'),
'idGoal' => array('string', AddColumnsProcessedMetricsGoal::GOALS_OVERVIEW),
),
'Sort' => array(
'filter_sort_column' => array('string'),
'filter_sort_order' => array('string', 'desc'),
),
'Truncate' => array(
'filter_truncate' => array('integer'),
),
'Limit' => array(
'filter_offset' => array('integer', '0'),
'filter_limit' => array('integer'),
'keep_summary_row' => array('integer', '0'),
),
);
}
return self::$genericFiltersInfo;
}
/**
* Apply generic filters to the DataTable object resulting from the API Call.
* Disable this feature by setting the parameter disable_generic_filters to 1 in the API call request.
*
* @param DataTable $datatable
* @return bool
*/
protected function applyGenericFilters($datatable)
{
if ($datatable instanceof DataTable\Map) {
$tables = $datatable->getArray();
$filterWasApplied = false;
foreach ($tables as $table) {
$filterWasApplied = $this->applyGenericFilters($table);
}
return;
}
$genericFilters = self::getGenericFiltersInformation();
$filterApplied = false;
foreach ($genericFilters as $filterName => $parameters) {
$filterParameters = array();
$exceptionRaised = false;
foreach ($parameters as $name => $info) {
// parameter type to cast to
$type = $info[0];
// default value if specified, when the parameter doesn't have a value
$defaultValue = null;
if (isset($info[1])) {
$defaultValue = $info[1];
}
// third element in the array, if it exists, overrides the name of the request variable
$varName = $name;
if (isset($info[2])) {
$varName = $info[2];
}
try {
$value = Common::getRequestVar($name, $defaultValue, $type, $this->request);
settype($value, $type);
$filterParameters[] = $value;
} catch (Exception $e) {
$exceptionRaised = true;
break;
}
}
if (!$exceptionRaised) {
$datatable->filter($filterName, $filterParameters);
$filterApplied = true;
}
}
return $filterApplied;
}
}
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