function DatabaseConnection_mysql::rollback

Overrides DatabaseConnection::rollback

File

includes/database/mysql/database.inc, line 597

Class

DatabaseConnection_mysql

Code

public function rollback($savepoint_name = 'drupal_transaction') {
    // MySQL will automatically commit transactions when tables are altered or
    // created (DDL transactions are not supported). Prevent triggering an
    // exception to ensure that the error that has caused the rollback is
    // properly reported.
    if (!$this->connection
        ->inTransaction()) {
        // Before PHP 8 $this->connection->inTransaction() will return TRUE and
        // $this->connection->rollback() does not throw an exception; the
        // following code is unreachable.
        // If \DatabaseConnection::rollback() would throw an
        // exception then continue to throw an exception.
        if (!$this->inTransaction()) {
            throw new DatabaseTransactionNoActiveException();
        }
        // A previous rollback to an earlier savepoint may mean that the savepoint
        // in question has already been accidentally committed.
        if (!isset($this->transactionLayers[$savepoint_name])) {
            throw new DatabaseTransactionNoActiveException();
        }
        trigger_error('Rollback attempted when there is no active transaction. This can cause data integrity issues.', E_USER_WARNING);
        return;
    }
    return parent::rollback($savepoint_name);
}