protected Connection::popCommittableTransactions()
Overridden to work around issues to MySQL not supporting transactional DDL.
Overrides Connection::popCommittableTransactions
File
- core/lib/Drupal/Core/Database/Driver/mysql/Connection.php, line 288
Class
- Connection
- MySQL implementation of \Drupal\Core\Database\Connection.
Namespace
Drupal\Core\Database\Driver\mysql
Code
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 | protected function popCommittableTransactions() { // Commit all the committable layers. foreach (array_reverse($this->transactionLayers) as $name => $active) { // Stop once we found an active transaction. if ($active) { break; } // If there are no more layers left then we should commit. unset($this->transactionLayers[$name]); if (empty($this->transactionLayers)) { if (!$this->connection->commit()) { throw new TransactionCommitFailedException(); } } else { // Attempt to release this savepoint in the standard way. try { $this->query('RELEASE SAVEPOINT ' . $name); } catch (DatabaseExceptionWrapper $e) { // However, in MySQL (InnoDB), savepoints are automatically committed // when tables are altered or created (DDL transactions are not // supported). This can cause exceptions due to trying to release // savepoints which no longer exist. // // To avoid exceptions when no actual error has occurred, we silently // succeed for MySQL error code 1305 ("SAVEPOINT does not exist"). if ($e->getPrevious()->errorInfo[1] == '1305') { // If one SAVEPOINT was released automatically, then all were. // Therefore, clean the transaction stack. $this->transactionLayers = array(); // We also have to explain to PDO that the transaction stack has // been cleaned-up. $this->connection->commit(); } else { throw $e; } } } }} |
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