Develop the Business Service Tier

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

@Service
@Transactional
public class EmployeeServiceImpl implements EmployeeService {

	@Autowired
	private EmployeeDao employeeDao;
	
	@Autowired
	private EmployeeMapper employeeMapper;

	@Override
	public List<EmployeeDto> findAll() {
		List<Employee> employees = employeeDao.getAll();
		List<EmployeeDto> employeeDtos = new ArrayList<EmployeeDto>();
		for(Employee employee : employees){
			employeeDtos.add(employeeMapper.mapEntityToDto(employee));
		}
		return employeeDtos;
	} 
}