/**
* Merge the columns of two data tables.
* 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) {
$subTables2 = $table2->getDataTables();
foreach ($table1->getDataTables() as $index => $subTable1) {
if (!array_key_exists($index, $subTables2)) {
// occurs when archiving starts on dayN and continues into dayN+1, see https://github.com/piwik/piwik/issues/5168#issuecomment-50959925
continue;
}
$subTable2 = $subTables2[$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);
}
}
