Bedingte programmatische Rollback-Steuerung über TransactionAspectSupport

@Service
public class PaymentProcessingService {
 
    private final LedgerRepository ledgerRepository;
    private final ExternalPaymentGateway paymentGateway;
 
    @Transactional
    public ProcessingResult processTransaction(PaymentRequest request) {
        LedgerEntry entry = ledgerRepository.save(new LedgerEntry(request.getAmount()));
        
        GatewayResponse response = paymentGateway.charge(request.getPaymentMethod(), request.getAmount());
        
        if (response.getStatus() == GatewayStatus.SUSPECTED_FRAUD) {
            TransactionAspectSupport.currentTransactionStatus().setRollbackOnly();
            return ProcessingResult.flaggedForReview(entry.getId(), response.getReason());
        }
        
        entry.markSettled(response.getTransactionId());
        return ProcessingResult.success(entry.getId());
    }
}