Develop the Business Service Tier

@RunWith( SpringJUnit4ClassRunner.class )
@ContextConfiguration( locations = { "classpath:context.xml" } )
@TransactionConfiguration( defaultRollback = true )
@Transactional
public class ProtocolServiceImplTest {
	@Autowired
	private ProtocolService service;
	@Test
	public void testFindAll() {
		Assert.assertEquals(0L, service.findAll().size());
	}
}

@Service
@Transactional
public class ProtocolServiceImpl implements ProtocolService {
	@Autowired
	private ProtocolDao protocolDao;
	@Autowired
	private ProtocolMapper protocolMapper;
	@Override
	public List<ProtocolDto> findAll() {
		List<Protocol> protocols = protocolDao.getAll();
		List<ProtocolDto> protocolDtos = new ArrayList<ProtocolDto>();
		for(Protocol protocol : protocols){
			protocolDtos.add(protocolMapper.mapEntityToDto(protocol));
		}
		return protocolDtos;
	}
}