Трёхзвенное приложение ( Android-Glassfish-MySQL )

package phonebook.facade;
 
import java.util.LinkedList;
import java.util.List;
import phonebook.dao.AddressDAO;
import phonebook.dao.CityDAO;
import phonebook.entity.Address;
import phonebook.entity.Company;
import phonebook.entity.Person;
import phonebook.view.AddressView;
import phonebook.view.CompanyView;
 
public class AddressFacade {
    private AddressDAO addressDAO;
    private CompanyFacade companyFacade;
    private PersonFacade personFacade;
    private CityDAO cityDAO;
 
    public void setAddressDAO(AddressDAO addressDAO) {
        this.addressDAO = addressDAO;
    }
 
    public void setCityDAO(CityDAO cityDAO) {
        this.cityDAO = cityDAO;
    }
 
    public void setCompanyFacade(CompanyFacade companyFacade) {
        this.companyFacade = companyFacade;
    }
 
    public void setPersonFacade(PersonFacade personFacade) {
        this.personFacade = personFacade;
    }
    
    
    public Long addAddress(AddressView av) {
        av.setAddressId(null);
        return addressDAO.addAddress(createAddressFromView(av));
    }
    
    
    public void updateAddress(AddressView av) {
        addressDAO.updateAddress(createAddressFromView(av));
    }
 
    public void updateCompany(AddressView av) {
        Address a = addressDAO.getAddress(av.getAddressId());
        if (av.getCompanyList() != null) {
            List<Company> cList = new LinkedList<Company>();
            for(CompanyView cv : av.getCompanyList()) {
                cList.add(companyFacade.createCompanyFromView(cv));
            }
            a.setCompanyList(cList);
        }
    }
 
    public void deleteAddress(AddressView av) {
        addressDAO.deleteAddress(addressDAO.getAddress(av.getAddressId()));
    }
 
    public AddressView getAddress(Long id) {
        return new AddressView(addressDAO.getAddress(id));
    }
 
    public List<AddressView> findApplicant() {
        List<AddressView> pvList = new LinkedList<AddressView>();
        List<Address> aList = addressDAO.findAddress();
        for (Address a : aList) {
            pvList.add(new AddressView(a));
        }
        return pvList;
    }
    
 
    private Address createAddressFromView(AddressView av) {
        Address a = null;
        if (av.getAddressId() != null && av.getAddressId() > 0) {
            a = addressDAO.getAddress(av.getAddressId());
        } else {
            a = new Address();
            a.setCompanyList(new LinkedList<Company>());
            a.setPersonList(new LinkedList<Person>());
        }
        a.setStreet(av.getStreet());
        a.setHouseNumber(av.getHouseNumber());
        a.setFlatNumber(av.getFlatNumber());
        a.setCity(cityDAO.getCity(av.getCityId()));
 
        return a;
    }
    
}

package phonebook.view;
 
import java.util.LinkedList;
import java.util.List;
import phonebook.entity.Address;
import phonebook.entity.Company;
import phonebook.entity.Person;
 
 
public class AddressView {
    private Long addressId;
    private String street;
    private Integer houseNumber;
    private Integer flatNumber;
    private Long cityId;
    private List<PersonView> personList;
    private List<CompanyView> companyList;
 
    public AddressView(Address a) {
        this.addressId = a.getAddressId();
        this.street = a.getStreet();
        this.houseNumber = a.getHouseNumber();
        this.flatNumber = a.getFlatNumber();
        this.cityId = a.getCity().getCityId();
        
        this.personList = new LinkedList<PersonView>();
        List<Person> pList = a.getPersonList();
        for (Person p : pList) {
            personList.add(new PersonView(p));
        }
        
        this.companyList = new LinkedList<CompanyView>();
        List<Company> cList = a.getCompanyList();
        for (Company c : cList) {
            companyList.add(new CompanyView(c));
        }
    }
 
    public Long getAddressId() {
        return addressId;
    }
 
    public Long getCityId() {
        return cityId;
    }
 
    public List<CompanyView> getCompanyList() {
        return companyList;
    }
 
    public Integer getFlatNumber() {
        return flatNumber;
    }
 
    public Integer getHouseNumber() {
        return houseNumber;
    }
 
    public List<PersonView> getPersonList() {
        return personList;
    }
 
    public String getStreet() {
        return street;
    }
 
    public void setAddressId(Long addressId) {
        this.addressId = addressId;
    }
 
    public void setCityId(Long cityId) {
        this.cityId = cityId;
    }
 
    public void setCompanyList(List<CompanyView> companyList) {
        this.companyList = companyList;
    }
 
    public void setFlatNumber(Integer flatNumber) {
        this.flatNumber = flatNumber;
    }
 
    public void setHouseNumber(Integer houseNumber) {
        this.houseNumber = houseNumber;
    }
 
    public void setPersonList(List<PersonView> personList) {
        this.personList = personList;
    }
 
    public void setStreet(String street) {
        this.street = street;
    }
    
    
    
}

@Autowired
MyService service;

@Service
public class CityFacadeImpl implements CityFacade{
    @Autowired
    private AddressFacade addressFacade;
    @Autowired
    private CityDAO cityDAO;
 
//методы add, update и т.д
}