/**
* Delete the migration datasets from the table
*
* @param string $tableName
*/
public function batchDelete($tableName)
{
$migrationData = self::$_migrationPath . $this->_version . '/' . $tableName . '.dat';
if (!file_exists($migrationData)) {
return;
// nothing to do
}
self::$_connection->begin();
self::$_connection->delete($tableName);
$batchHandler = fopen($migrationData, 'r');
while (($line = fgets($batchHandler)) !== false) {
$data = explode('|', rtrim($line), 2);
self::$_connection->delete($tableName, 'id=?', [$data[0]]);
unset($line);
}
fclose($batchHandler);
self::$_connection->commit();
}
