Masked exception makes it very difficult to debug

When you try to save an object, but the database does not exist, Doctrine throws a Doctrine_Transaction_Exception exception with the message "Rollback failed. There is no active transaction.".

But the real problem is that the database does not exit. The problem is in the Doctrine_Connection_UnitOfWork class around line 146:

        } catch (Exception $e) {
            // Make sure we roll back our internal transaction
            //$record->state($state);
            $conn->rollback();
            throw $e;
        }

The exception occurs because of "$conn->rollback();", and so the "throw $e;" is never reached.

We should probably throws an exception earlier about the fact that the database does not exist.