public function DatabaseConnection_mysql::rollback in Drupal 7

Rolls back the transaction entirely or to a named savepoint.

This method throws an exception if no transaction is active.

Parameters

$savepoint_name: The name of the savepoint. The default, 'drupal_transaction', will roll the entire transaction back.

Throws

DatabaseTransactionNoActiveException

Overrides DatabaseConnection::rollback

See also

DatabaseTransaction::rollback()

File

includes/database/mysql/database.inc, line 592

Database interface code for MySQL database servers.

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);
}