Catch database exception (if timed out) and rebuild the connection in long running TYPO3 Flow commands

JobsCommandController.php

<?php
//...
class JobsCommandController extends CommandController {
	public function workCommand($queue, $verbose = FALSE) {
		do {
			try {
				$job = $this->jobManager->waitAndExecute($queueName);
				if ($job !== NULL) {
					$this->printLineIf('Processed job "%s"', $verbose, array($job->getLabel()));
					$this->persistenceManager->clearState();
				}
			} catch (Exception $exception) {
				$this->printLineIf($exception->getMessage(), $verbose);
			}  catch (\TYPO3\Flow\Persistence\Doctrine\Exception\DatabaseException $exception) {
				/** 
				 * CATCH DATABSE EXCEPTION AND RECONNECT! (PDO does not support this by default)
				 * Reinitialize database connection if connection timed out.
				 * You shoult also have a look at the mysql-servers wait_timeout option (should not be to low)
				 */
				$this->doctrineEntityManager->getConnection()->close();
				$this->doctrineEntityManager->getConnection()->connect();
			} catch (\Exception $exception) {
				$this->printLineIf('EXCEPTION: "%s"', $verbose, array($exception->getMessage()));
				$this->systemLogger->logException($exception);
			}
		} while (TRUE);
	}
}
//....
?>