Internal function: commit all the transaction layers that can commit.
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 {
$this
->query('RELEASE SAVEPOINT ' . $name);
}
}
}