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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\Plugins\API\DataTable;
use Piwik\DataTable\Row;
use Piwik\DataTable;
class MergeDataTables
{
/**
* Merge the columns of two data tables. Only takes into consideration the first row of each table.
* Manipulates the first table.
*
* @param DataTable|DataTable\Map $table1 The table to eventually filter.
* @param DataTable|DataTable\Map $table2 Whether to delete rows with no visits or not.
*/
public function mergeDataTables($table1, $table2)
{
// handle table arrays
if ($table1 instanceof DataTable\Map && $table2 instanceof DataTable\Map) {
$subTables1 = $table1->getDataTables();
foreach ($table2->getDataTables() as $index => $subTable2) {
if (!array_key_exists($index, $subTables1)) {
$subTable1 = $this->makeNewDataTable($subTable2);
$table1->addTable($subTable1, $index);
} else {
$subTable1 = $subTables1[$index];
}
$this->mergeDataTables($subTable1, $subTable2);
}
return;
}
$firstRow2 = $table2->getFirstRow();
if (!($firstRow2 instanceof Row)) {
return;
}
$firstRow1 = $table1->getFirstRow();
if (empty($firstRow1)) {
$firstRow1 = $table1->addRow(new Row());
}
foreach ($firstRow2->getColumns() as $metric => $value) {
$firstRow1->setColumn($metric, $value);
}
}
private function makeNewDataTable(DataTable\DataTableInterface $subTable2)
{
if ($subTable2 instanceof DataTable\Map) {
$result = new DataTable\Map();
$result->setKeyName($subTable2->getKeyName());
return $result;
} else if ($subTable2 instanceof DataTable\Simple) {
$result = new DataTable\Simple();
$result->setAllTableMetadata($subTable2->getAllTableMetadata());
return $result;
} else if ($subTable2 instanceof DataTable) {
$result = new DataTable();
$result->setAllTableMetadata($subTable2->getAllTableMetadata());
return $result;
} else {
throw new \Exception("Unknown datatable type: " . get_class($subTable2));
}
}
}
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