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<?php
/**
* Matomo - free/libre analytics platform
*
* @link https://matomo.org
* @license http://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
*/
namespace Piwik\Metrics;
use Piwik\DataTable;
use Piwik\DataTable\Row;
use Piwik\Metrics;
use Piwik\Plugin\Metric;
class Sorter
{
/**
* @var Sorter\Config
*/
private $config;
public function __construct(\Piwik\Metrics\Sorter\Config $config)
{
$this->config = $config;
}
/**
* Sorts the DataTable rows using the supplied callback function.
*
* @param DataTable $table The table to sort.
*/
public function sort(DataTable $table)
{
// all that code is in here and not in separate methods for best performance. It does make a difference once
// php has to copy many (eg 50k) rows otherwise.
$table->setTableSortedBy($this->config->primaryColumnToSort);
$rows = $table->getRowsWithoutSummaryRow();
// we need to sort rows that have a value separately from rows that do not have a value since we always want
// to append rows that do not have a value at the end.
$rowsWithValues = array();
$rowsWithoutValues = array();
$valuesToSort = array();
foreach ($rows as $key => $row) {
$value = $this->getColumnValue($row);
if (isset($value)) {
$valuesToSort[] = $value;
$rowsWithValues[] = $row;
} else {
$rowsWithoutValues[] = $row;
}
}
unset($rows);
if ($this->config->isSecondaryColumnSortEnabled && $this->config->secondaryColumnToSort) {
$secondaryValues = array();
foreach ($rowsWithValues as $key => $row) {
$secondaryValues[$key] = $row->getColumn($this->config->secondaryColumnToSort);
}
array_multisort($valuesToSort, $this->config->primarySortOrder, $this->config->primarySortFlags, $secondaryValues, $this->config->secondarySortOrder, $this->config->secondarySortFlags, $rowsWithValues);
} else {
array_multisort($valuesToSort, $this->config->primarySortOrder, $this->config->primarySortFlags, $rowsWithValues);
}
if (!empty($rowsWithoutValues) && $this->config->secondaryColumnToSort) {
$secondaryValues = array();
foreach ($rowsWithoutValues as $key => $row) {
$secondaryValues[$key] = $row->getColumn($this->config->secondaryColumnToSort);
}
array_multisort($secondaryValues, $this->config->secondarySortOrder, $this->config->secondarySortFlags, $rowsWithoutValues);
}
unset($secondaryValues);
foreach ($rowsWithoutValues as $row) {
$rowsWithValues[] = $row;
}
$table->setRows(array_values($rowsWithValues));
}
private function getColumnValue(Row $row)
{
$value = $row->getColumn($this->config->primaryColumnToSort);
if ($value === false || is_array($value)) {
return null;
}
return $value;
}
/**
* @param string $order 'asc' or 'desc'
* @return int
*/
public function getPrimarySortOrder($order)
{
if ($order === 'asc') {
return SORT_ASC;
}
return SORT_DESC;
}
/**
* @param string $order 'asc' or 'desc'
* @param string|int $secondarySortColumn column name or column id
* @return int
*/
public function getSecondarySortOrder($order, $secondarySortColumn)
{
if ($secondarySortColumn === 'label') {
$secondaryOrder = SORT_ASC;
if ($order === 'asc') {
$secondaryOrder = SORT_DESC;
}
return $secondaryOrder;
}
return $this->getPrimarySortOrder($order);
}
/**
* Detect the column to be used for sorting
*
* @param DataTable $table
* @param string|int $columnToSort column name or column id
* @return int
*/
public function getPrimaryColumnToSort(DataTable $table, $columnToSort)
{
// we fallback to nb_visits in case columnToSort does not exist
$columnsToCheck = array($columnToSort, 'nb_visits');
$row = $table->getFirstRow();
foreach ($columnsToCheck as $column) {
$column = Metric::getActualMetricColumn($table, $column);
if ($row->hasColumn($column)) {
// since getActualMetricColumn() returns a default value, we need to make sure it actually has that column
return $column;
}
}
return $columnToSort;
}
/**
* Detect the secondary sort column to be used for sorting
*
* @param Row $row
* @param int|string $primaryColumnToSort
* @return int
*/
public function getSecondaryColumnToSort(Row $row, $primaryColumnToSort)
{
$defaultSecondaryColumn = array(Metrics::INDEX_NB_VISITS, 'nb_visits');
if (in_array($primaryColumnToSort, $defaultSecondaryColumn)) {
// if sorted by visits, then sort by label as a secondary column
$column = 'label';
$value = $row->hasColumn($column);
if ($value !== false) {
return $column;
}
return null;
}
if ($primaryColumnToSort !== 'label') {
// we do not add this by default to make sure we do not sort by label as a first and secondary column
$defaultSecondaryColumn[] = 'label';
}
foreach ($defaultSecondaryColumn as $column) {
$value = $row->hasColumn($column);
if ($value !== false) {
return $column;
}
}
}
/**
* @param DataTable $table
* @param string|int $columnToSort A column name or column id. Make sure that column actually exists in the row.
* You might want to get a valid column via {@link getPrimaryColumnToSort()} or
* {@link getSecondaryColumnToSort()}
* @return int
*/
public function getBestSortFlags(DataTable $table, $columnToSort)
{
// when column is label we always to sort by string or natural
if (isset($columnToSort) && $columnToSort !== 'label') {
foreach ($table->getRowsWithoutSummaryRow() as $row) {
$value = $row->getColumn($columnToSort);
if ($value !== false && $value !== null && !is_array($value)) {
if (is_numeric($value)) {
$sortFlags = SORT_NUMERIC;
} else {
$sortFlags = $this->getStringSortFlags();
}
return $sortFlags;
}
}
}
return $this->getStringSortFlags();
}
private function getStringSortFlags()
{
if ($this->config->naturalSort) {
$sortFlags = SORT_NATURAL | SORT_FLAG_CASE;
} else {
$sortFlags = SORT_STRING | SORT_FLAG_CASE;
}
return $sortFlags;
}
}