Develop the Business Service Tier

@RunWith( SpringJUnit4ClassRunner.class )
@ContextConfiguration( locations = { "classpath:context.xml" } )
@TransactionConfiguration( defaultRollback = true )
@Transactional
public class ManuscriptAuthorServiceImplTest {

	@Autowired
	private ManuscriptService manuscriptService;
	
	@Autowired
	private AuthorService authorService;
	
	@Autowired
	private ManuscriptAuthorService manuscriptAuthorService;
	
	@Test
	public void testFindAll() {
		Assert.assertEquals(0L, manuscriptAuthorService.findAll().size());
	}
}

@Service
@Transactional
public class ManuscriptAuthorServiceImpl implements ManuscriptAuthorService {

	@Autowired
	private ManuscriptDao manuscriptDao;
	
	@Autowired
	private ManuscriptMapper manuscriptMapper;
	
	@Autowired
	private AuthorDao authorDao;
	
	@Autowired
	private AuthorMapper authorMapper;
	
	@Autowired
	private ManuscriptAuthorDao manuscriptAuthorDao;
	
	@Override
	public List<ManuscriptAuthorDto> findAll() {
		List<ManuscriptAuthorDto> manuscriptAuthorDtos = new ArrayList<ManuscriptAuthorDto>();
		List<ManuscriptAuthor> manuscriptList = manuscriptAuthorDao.getAll();
		for(ManuscriptAuthor manuscriptAuthor : manuscriptList) {	
			ManuscriptAuthorDto manuscriptAuthorDto = new ManuscriptAuthorDto();	
			manuscriptAuthorDto.setManuscriptDto(manuscriptMapper.mapEntityToDto(manuscriptAuthor.getManuscript()));
			manuscriptAuthorDto.setAuthorDto(authorMapper.mapEntityToDto(manuscriptAuthor.getAuthor()));
			manuscriptAuthorDto.setPublisher(manuscriptAuthor.getPublisher());
			manuscriptAuthorDtos.add(manuscriptAuthorDto);
		}
		return manuscriptAuthorDtos;
	}
}