Please help me in accessing Employee object in the below code using JAXB annotations. The application was developed in JPA SPRING. We are unable to access sub-object properties i.e, Employee properties
RESOURCE CORE FILE
#XmlAccessorType(XmlAccessType.PROPERTY)
#XmlRootElement(name="resource")
#Entity
#Table(name = "resource")
public class Resource implements java.io.Serializable {
private Integer resourceId;
private String resourceCode;
private String resourceName;
private String resourceNumber;
private Employee employee;
public Resource() {
}
public Resource(Employee employee,String resourceCode, String resourceName,
String resourceNumber
) {
this.employee = employee;
this.resourceCode = resourceCode;
this.resourceName = resourceName;
this.resourceNumber = resourceNumber;
}
#Id
#GeneratedValue(strategy = IDENTITY)
#Column(name = "resource_id", unique = true, nullable = false)
public Integer getResourceId() {
return this.resourceId;
}
public void setResourceId(Integer resourceId) {
this.resourceId = resourceId;
}
#Column(name = "resource_code")
public String getResourceCode() {
return this.resourceCode;
}
public void setResourceCode(String resourceCode) {
this.resourceCode = resourceCode;
}
#Column(name = "resource_number")
public String getResourceNumber() {
return this.resourceNumber;
}
public void setResourceNumber(String resourceNumber) {
this.resourceNumber = resourceNumber;
}
#Column(name = "resource_name")
public String getResourceName() {
return this.resourceName;
}
public void setResourceName(String resourceName) {
this.resourceName = resourceName;
}
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "employee_id")
public Employee getEmployee() {
return this.employee;
}
public void setEmployee(Employee employee) {
this.employee = employee;
}
}
EMPLOYEE CORE FILE
#XmlAccessorType(XmlAccessType.PROPERTY)
#XmlRootElement(name="employee")
#Entity
#Table(name = "employee")
public class Employee implements java.io.Serializable {
private Integer employeeId;
private String employeeCode;
private String employeeName;
private List<Resource> resources = new ArrayList<Resource>(0);
public Employee() {
}
public Employee(String employeeCode, String employeeName,List<Resource> resources
) {
this.employeeCode = employeeCode;
this.employeeName = employeeName;
this.resources = resources;
}
#Id
#GeneratedValue(strategy = IDENTITY)
#Column(name = "employee_id", unique = true, nullable = false)
public Integer getEmployeeId() {
return this.employeeId;
}
public void setEmployeeId(Integer employeeId) {
this.employeeId = employeeId;
}
#Column(name = "employee_code")
public String getEmployeeCode() {
return this.employeeCode;
}
public void setEmployeeCode(String employeeCode) {
this.employeeCode = employeeCode;
}
#Column(name = "employee_name")
public String getEmployeeName() {
return this.employeeName;
}
public void setEmployeeName(String employeeName) {
this.employeeName = employeeName;
}
#OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "employee")
public List<Resource> getResources() {
return this.resources;
}
public void setResources(List<Resource> resources) {
this.resources = resources;
}
}
You have to use the FetchType : Eager in RESOURCE CORE FILE of getEmployee() Method. Lazy fetch type is pulling only the parent object. Eager is pulling both.
Related
I have 2 entity classes like below. After the parent object is persisted,
accessing the foreign key referenced object returns null.The entity classes are as below.
I have an Employee entity class like below
#Entity
#Table(name = "employees")
public class Employee {
private long employeeId;
private String name;
private long companyId;
private Company companyByCompanyId;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "employee_id")
public long getEmployeeId() {
return employeeId;
}
public void setEmployeeId(long employeeId) {
this.employeeId = employeeId;
}
#Basic
#Column(name = "name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
#Basic
#Column(name = "company_id")
public long getCompanyId() {
return companyId;
}
public void setCompanyId(long companyId) {
this.companyId = companyId;
}
#ManyToOne
#JoinColumn(name = "company_id", referencedColumnName = "company_id", nullable = false, insertable = false, updatable = false)
public Company getCompanyByCompanyId() {
return companyByCompanyId;
}
public void setCompanyByCompanyId(Company companyByCompanyId) {
this.companyByCompanyId = companyByCompanyId;
}
}
and a Company entity class like below
#Entity
#Table(name = "companies")
public class Company {
private long companyId;
private String companyName;
private Collection<Employee> employeesByCompanyId;
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "company_id")
public long getCompanyId() {
return companyId;
}
public void setCompanyId(long companyId) {
this.companyId;
}
#Basic
#Column(name = "company_name")
public String getCompanyName() {
return companyName;
}
public void setCompanyName(String companyName) {
this.companyName = companyName;
}
#OneToMany(mappedBy = "companyByCompanyId")
public Collection<Employee> getEmployeesByCompanyId() {
return employeesByCompanyId;
}
public void setEmployeesByCompanyId(Collection<Employee> employeesByCompanyId) {
this.employeesByCompanyId = employeesByCompanyId;
}
}
This is the controller method in a controller class
#ApiOperation(value="Create a new employee")
#ApiResponses({})
#RequestMapping(value= "/createEmployee",method= RequestMethod.POST)
public Callable<EmployeeDTO> createEmployee(
HttpServletRequest request,
#RequestBody #Valid final List<EmployeeDTO> employeeDto) {
long employeeId = employeeService.createEmployee(employeeDto);
EmployeeDTO createdEmployee = employeeService.getEmployee(employeeId);
return () -> createdEmployee;
}
This is the method for createEmployee(employeeDto) in the service class
#Transactional
public long createEmployee(employeeDto){
Employee employee = new Employee();
employee.setName(employeeDto.getName());
employee.setCompanyId(employeeDto.getCompanyId());
Employee savedEmployee = employeeRepository.save(employee);
return savedEmployee.getEmployeeId();
}
This is the getEmployee method in the same service class as above.
public EmployeeDTO getEmployee(long employeeId) {
Employee employee = employeeRepository.findByEmployeeId(employeeId);
EmployeeDTO employeeDTO = new EmployeeDTO();
employeeDTO.setEmployeeId(employee.getEmployeeId());
employeeDTO.setName(employee.getName());
employeeDTO.setCompanyByCompanyId(employee.getCompanyByCompanyId());
}
employee.getCompanyByCompanyId() -> this is where it throws the Null pointer exception.
The companies table already has the company row that I am associating with employee.
I am trying to attach image files to an entity called product. I can create a product along with the image pretty well but when i try to delete an image i get the following error.
HTTP 500 - Request processing failed; nested exception is org.hibernate.PersistentObjectException: detached entity passed to persist: com.IJM.model.Product
Product Class
#Entity
#Table(name = "Product")
public class Product {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "Id")
private Long id;
#NotNull
#Size(min = 3, max = 10)
#Column(name = "Code", nullable = false)
private String code;
#NotNull
#Size(min = 3, max = 50)
#Column(name = "Name", nullable = false)
private String name;
#Size( max = 50)
#Column(name = "Description", nullable = false)
private String description;
#ManyToOne(cascade = CascadeType.MERGE)
#JoinColumn(name = "Id_Category")
private Category category;
#ManyToOne(cascade = CascadeType.MERGE)
#JoinColumn(name = "Id_Unit")
private Unit unit;
#OneToMany(cascade = CascadeType.ALL,
fetch= FetchType.EAGER,
orphanRemoval = true,
mappedBy="product")
private Set<Image> images;
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Category getCategory() {
return category;
}
public void setCategory(Category category) {
if(this.category==null||!this.category.equals(category))
{
this.category=category;
}
return;
}
public Unit getUnit() {
return unit;
}
public void setUnit(Unit unit) {
if(this.unit==null||!this.unit.equals(unit))
{
this.unit=unit;
}
return;
}
public Set<Image> getImages() {
return images;
}
public void setImages(Set<Image> images) {
this.images = images;
}
}
Image Class
#Entity
#Table(name = "product_Image")
public class Image {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name="id", nullable = false)
private long id;
#Lob
#Column(name = "File", nullable = false)
private byte[] file;
#Column(name = "Checksum",nullable = false)
private String checksum;
#Column(name = "Extension",nullable = false)
private String extension;
#Column(name = "File_Name",nullable = false)
private String file_name;
#Column(name = "Size",nullable = false)
private int size;
#Column(name = "Last_Updated",nullable = false)
private Timestamp last_Updated;
#ManyToOne(cascade=CascadeType.ALL)
#JoinColumn(name="Id_Product")
private Product product;
#ManyToOne(cascade = CascadeType.MERGE)
#JoinColumn(name="Id_Directory")
private Directory directory;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public byte[] getFile() {
return file;
}
public void setFile(byte[] file) {
this.file = file;
}
public String getChecksum() {
return checksum;
}
public void setChecksum(String checksum) {
this.checksum = checksum;
}
public String getExtension() {
return extension;
}
public void setExtension(String extension) {
this.extension = extension;
}
public String getFile_name() {
return file_name;
}
public void setFile_name(String file_name) {
this.file_name = file_name;
}
public int getSize() {
return size;
}
public void setSize(int size) {
this.size = size;
}
public Timestamp getLast_Updated() {
return last_Updated;
}
public void setLast_Updated(Timestamp last_Updated) {
this.last_Updated = last_Updated;
}
public Product getProduct() {
return product;
}
public void setProduct(Product product) {
this.product = product;
}
public Directory getDirectory() {
return directory;
}
public void setDirectory(Directory directory) {
this.directory = directory;
}
And this is the code for the controller calling the deleting method
#RestController
#RequestMapping("/image")
public class ImageController {
#Autowired
ProductService productService;
#Autowired
ImageService imageService;
private static final String productImagePath="C:\\IJM\\Images\\Product\\";
#RequestMapping(value = "/product/{code}", method = RequestMethod.DELETE)
public ResponseEntity<Image> deleteProductImage(#PathVariable("code") String code) {
System.out.println("Fetching & Deleting Image for product " + code);
code = code.toUpperCase();
if (!productService.isProductExist(code)) {
System.out.println("Product with code " + code + " not found");
return new ResponseEntity<Image>(HttpStatus.NOT_FOUND);
}
else
{
Product product = productService.findProductByCode(code);
if(product.getImages()!=null)
{
for(Image image:product.getImages())
{
product.getImages().remove(image);
image.setProduct(null);
imageService.deleteImage(image.getId());
}
productService.saveProduct(product);
try{
File file = new File(productImagePath+code);
if(FileDeleter.removeDirectory(file)){
System.out.println(file.getName() + " is deleted!");
}else{
System.out.println("Delete operation is failed.");
}
}catch(Exception e){
e.printStackTrace();
}
}
}
return new ResponseEntity<Image>(HttpStatus.NO_CONTENT);
}
}
In case someone else is wondering.. the service just calls the DAO
#Override
public void deleteImage(long id) {
Image image = imageDao.findById(id);
imageDao.delete(image);
}
This is the Dao Class
#Repository("imageDao")
public class ImageDaoImpl extends AbstractDao<Long,Image> implements ImageDao{
#Override
public void delete(Image image) {
super.delete(image);
}
}
This is the code in my abstract DAO class
public void delete(T entity) {
getSession().delete(entity);
}
It seems these line are not in proper order.
product.getImages().remove(image);
image.setProduct(null);
imageService.deleteImage(image.getId());
Also not sure what imageService.deleteImage(image.getId()); is doing. It is not required.
Please try like below.
for(Image image:product.getImages())
{
image.setProduct(null);
product.getImages().remove(image);
}
productService.saveProduct(product);
This should be enough. I know it doesn't make any sense to change the order but It had worked for me.
I have fetched a list of objects of type Company from the database. But when trying to serialize the list using Jackson to JSON, throws an error
com.fasterxml.jackson.databind.JsonMappingException: failed to lazily initialize a collection of role: com.zerosolutions.repository.entity.CompanySector.companies, could not initialize proxy - no Session (through reference chain: java.util.ArrayList[0]->com.zerosolutions.repository.entity.Company["sector"]->com.zerosolutions.repository.entity.CompanySector["companies"])
Company:
#Entity
#Table(name = "company")
public class Company {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private int id;
#Column(name = "name")
private String name;
#ManyToOne(cascade = CascadeType.PERSIST)
#JoinColumn(name = "sector")
private CompanySector sector;
#OneToOne
#JoinColumn(name = "id")
private CompanyProfile profile;
#OneToOne
#JoinColumn(name = "id")
private CompanyAddress address;
#OneToMany(mappedBy = "company", cascade = CascadeType.ALL)
private List<Job> jobs = new ArrayList<>();
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public CompanySector getSector() {
return sector;
}
public void setSector(CompanySector sector) {
this.sector = sector;
}
public CompanyProfile getProfile() {
return profile;
}
public void setProfile(CompanyProfile profile) {
this.profile = profile;
}
public CompanyAddress getAddress() {
return address;
}
public void setAddress(CompanyAddress address) {
this.address = address;
}
public List<Job> getJobs() {
return jobs;
}
public void setJobs(List<Job> jobs) {
this.jobs = jobs;
}
}
CompanySector:
#Entity
#Table(name = "sectors")
public class CompanySector {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
#Column(name="sector")
private String sector;
#OneToMany(mappedBy="sector", cascade=CascadeType.PERSIST)
private List<Company> companies = new ArrayList<>();
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getSector() {
return sector;
}
public void setSector(String sector) {
this.sector = sector;
}
public List<Company> getCompanies() {
return companies;
}
}
Conversion code:
#RequestMapping(value = "/getCompanyList", method = RequestMethod.GET, produces={ "application/json"})
public #ResponseBody String getCompanyList() {
ObjectMapper mapper = new ObjectMapper();
try {
List<Company> companyList = companyServices.getCompanyList();
String companyListString = mapper.writeValueAsString(companyList); // this line throws error
return companyListString;
} catch (JsonProcessingException e) {
logger.error(e);
return null;
}
}
Any Suggestions what might be wrong here ?
Fetching list:
public List<Company> getCompanyList(){
Session session = sessionFactory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
List<Company> companies = session.createCriteria(Company.class).list();
logger.debug(companies);
tx.commit();
System.out.println("companies fetched");
return companies;
} catch(Exception e){
logger.error("Exceptino thrown: " + e);
tx.rollback();
return null;
} finally{
session.close();
}
}
If you know that you'll want to see all Companies every time you retrieve a CompanySector then change your field mapping for Companies to:
#OneToMany(fetch = FetchType.EAGER, mappedBy="sector", cascade=CascadeType.PERSIST)
private List<Company> companies = new ArrayList<>();
Another approach use Hibernate.initialize :
Hibernate.initialize(companySector.getCompany());
Also see this link it's very helpful
This is it my database project:
I have a problem with the correct combination of tables, as it is in the picture.
This is my files:
Category.java
#Entity
public class Category {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private long id;
private String categoryName;
protected Category() {}
public Category(String categoryName) {
this.categoryName = categoryName;
}
public String getCategoryName() {
return categoryName;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public void setCategoryName(String categoryName) {
this.categoryName = categoryName;
}
#Override
public String toString() {
return String.format(
"Customer[id=%d, firstName='%s']",
id, categoryName);
}
}
Items.java
#Entity
#Table(name = "Items")
public class Items {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int ItemId;
private String ItemName;
private String price;
private Set<Locals> locals = new HashSet<Locals>(0);
public Items(){
}
public Items(String price, String itemName) {
this.price = price;
this.ItemName = itemName;
}
public void setItemId(int itemId) {
ItemId = itemId;
}
public void setLocals(Set<Locals> locals) {
this.locals = locals;
}
public void setPrice(String price) {
this.price = price;
}
public void setItemName(String itemName) {
ItemName = itemName;
}
#Id
#GeneratedValue(strategy = IDENTITY)
#Column(name = "ItemId", unique = true, nullable = false)
public int getItemId() {
return ItemId;
}
#ManyToMany(fetch = FetchType.LAZY, mappedBy = "itemsTo")
public Set<Locals> getLocals() {
return locals;
}
#Column(name = "price", nullable = false, length = 10)
public String getPrice() {
return price;
}
#Column(name = "ItemName", nullable = false, length = 10)
public String getItemName() {
return ItemName;
}
}
Locals.java
#Entity
#Table(name = "Locals")
public class Locals {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int LocalId;
private String localName;
private String address;
private String phoneNumber;
private String coorX;
private String coorY;
private Set<Items> itemsTo = new HashSet<Items>(0);
public Locals(){
}
public Locals(String localName,String address,String phoneNumber, String coorY, String coorX) {
this.coorY = coorY;
this.coorX = coorX;
this.phoneNumber = phoneNumber;
this.address = address;
this.localName = localName;
}
public Locals(String localName,String address,String phoneNumber, String coorY, String coorX, Set<Items> itemsTo) {
this.coorY = coorY;
this.coorX = coorX;
this.phoneNumber = phoneNumber;
this.address = address;
this.localName = localName;
this.itemsTo = itemsTo;
}
public void setLocalId(int localId) {
LocalId = localId;
}
public void setLocalName(String localName) {
this.localName = localName;
}
public void setAddress(String address) {
this.address = address;
}
public void setCoorX(String coorX) {
this.coorX = coorX;
}
public void setCoorY(String coorY) {
this.coorY = coorY;
}
public void setItemsTo(Set<Items> itemsTo) {
this.itemsTo = itemsTo;
}
public void setPhoneNumber(String phoneNumber) {
this.phoneNumber = phoneNumber;
}
#Id
#GeneratedValue(strategy = IDENTITY)
#Column(name = "LocalId", unique = true, nullable = false)
public int getLocalId() {
return LocalId;
}
#Column(name = "localName", unique = false, nullable = false, length = 10)
public String getLocalName() {
return localName;
}
#Column(name = "address", unique = false, nullable = false, length = 10)
public String getAddress() {
return address;
}
#Column(name = "phoneNumber", unique = false, nullable = false, length = 10)
public String getPhoneNumber() {
return phoneNumber;
}
#Column(name = "coorX", unique = false, nullable = false, length = 10)
public String getCoorX() {
return coorX;
}
#Column(name = "coorY", unique = false, nullable = false, length = 10)
public String getCoorY() {
return coorY;
}
#ManyToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL)
#JoinTable(name = "ItemsFinall", joinColumns = {
#JoinColumn(name = "LocalId", nullable = false, updatable = false) },
inverseJoinColumns = { #JoinColumn(name = "ItemId",
nullable = false, updatable = false) })
public Set<Items> getItemsTo() {
return itemsTo;
}
}
and ItemsFinall.java
#Entity
#Table(name = "ItemsFinall")
public class ItemsFinall {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
private int ItemId;
private int CategoryId;
private int LocalId;
public ItemsFinall(int id, int localId, int categoryId, int itemId) {
this.LocalId = localId;
this.CategoryId = categoryId;
this.ItemId = itemId;
this.id=id;
}
public void setId(int id) {
this.id = id;
}
public void setLocalId(int localId) {
LocalId = localId;
}
public void setCategoryId(int categoryId) {
CategoryId = categoryId;
}
public void setItemId(int itemId) {
ItemId = itemId;
}
public int getLocalId() {
return LocalId;
}
public int getCategoryId() {
return CategoryId;
}
public int getItemId() {
return ItemId;
}
public int getId() {
return id;
}
}
I get the following error: Caused by: org.springframework.data.mapping.PropertyReferenceException: No property categoryName found for type ItemsFinall!
I do not know what to do to properly connect the table.
ItemsServiceImpl.java
package dnfserver.model;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
/**
* Created by Łukasz on 2015-03-14.
*/
#Component
public class CategoryServiceImpl implements CategoryService {
#Autowired
private CategoryRepository categoryRepository;
private Map<Integer,String> categoryMap = new HashMap<Integer, String>();
#Override
public Category create(Category category) {
Category createdCategory = category;
return categoryRepository.save(createdCategory);
}
#Override
public Category delete(int id) {
return null;
}
#Autowired
public Map<Integer,String> findAll(){
int i=0;
for (Category cat : categoryRepository.findAll()) {
categoryMap.put(i,cat.toString());
i++;
}
return categoryMap;
}
#Override
public Category update(Category shop) {
return null;
}
#Override
public Category findById(int id) {
return categoryRepository.findOne(id);
}
}
In hibernate/JPA you model the relationship between Entities, but not use plain Ids!
For example
#Entity
#Table(name = "ItemsFinall")
public class ItemsFinall {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
//instead of: private int ItemId;
#OneToMany
private Item item;
//instead of: private int CategoryId;
#OneToMany
private Category category;
//instead of: private int LocalId;
#OneToMany
private Local local;
...
(You also need to fix the Set<Locals> locals in item)
I have a rest server and client which uses this API. I have a list of hotels and it had passed well until I added bidirectional dependencies to other entities.After that I start receive an endless array of entities which just repeat the same row in database.
It is my first project with hibernate so may be I made trivial mistakes of novice.
Hotel:
#Entity
#Table(name = "hotels", schema = "", catalog = "mydb")
public class HotelsEntity implements HospitalityEntity{
private int idHotel;
private String name;
private String region;
private String description;
// private byte[] photo;
private HotelPropertyEntity property;
private List<RoomEntity> rooms;
#OneToOne(mappedBy = "hotel")
public HotelPropertyEntity getProperty() {
return property;
}
public void setProperty(HotelPropertyEntity property) {
this.property = property;
}
#OneToMany(mappedBy = "hotel")
public List<RoomEntity> getRooms() {
return rooms;
}
public void setRooms(List<RoomEntity> rooms) {
this.rooms = rooms;
}
#Id
#Column(name = "id_hotel", unique = true)
#GeneratedValue(strategy=GenerationType.AUTO)
public int getIdHotel() {
return idHotel;
}
public void setIdHotel(int idHotel) {
this.idHotel = idHotel;
}
#Basic
#Column(name = "name")
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
#Basic
#Column(name = "region")
public String getRegion() {
return region;
}
public void setRegion(String region) {
this.region = region;
}
#Basic
#Column(name = "description")
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
HotelProperty
#Entity
#Table(name = "hotel_property", schema = "", catalog = "mydb")
public class HotelPropertyEntity {
private int idHotelProperty;
private byte hasPool;
private byte hasTennisCourt;
private byte hasWaterslides;
private HotelsEntity hotel;
#Id
#Column(name = "id_hotel_property", unique = true)
#GeneratedValue(strategy=GenerationType.AUTO)
public int getIdHotelProperty() {
return idHotelProperty;
}
public void setIdHotelProperty(int idHotelProperty) {
this.idHotelProperty = idHotelProperty;
}
#Basic
#Column(name = "has_pool", columnDefinition = "BIT", length = 1)
public byte getHasPool() {
return hasPool;
}
public void setHasPool(byte hasPool) {
this.hasPool = hasPool;
}
#Basic
#Column(name = "has_tennis_court", columnDefinition = "BIT", length = 1)
public byte getHasTennisCourt() {
return hasTennisCourt;
}
public void setHasTennisCourt(byte hasTennisCourt) {
this.hasTennisCourt = hasTennisCourt;
}
#Basic
#Column(name = "has_waterslides", columnDefinition = "BIT", length = 1)
public byte getHasWaterslides() {
return hasWaterslides;
}
public void setHasWaterslides(byte hasWaterslides) {
this.hasWaterslides = hasWaterslides;
}
#OneToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "id_hotel_property")
public HotelsEntity getHotel() {
return hotel;
}
public void setHotel(HotelsEntity hotel) {
this.hotel = hotel;
}
Room:
#Entity
#Table(name = "room", schema = "", catalog = "mydb")
public class RoomEntity {
private int idRoom;
private String roomType;
private int peopleCapacity;
private Boolean booked;
private Boolean locked;
private HotelsEntity hotel;
private InventoriesEntity inventory;
private RoomPropertyEntity roomProperty;
#OneToOne(mappedBy = "room")
public RoomPropertyEntity getRoom() {
return roomProperty;
}
public void setRoom(RoomPropertyEntity roomProperty) {
this.roomProperty = roomProperty;
}
#OneToOne
#JoinColumn(name = "id_room")
public InventoriesEntity getInventory() {
return inventory;
}
public void setInventory(InventoriesEntity inventory) {
this.inventory = inventory;
}
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "id_hotel")
public HotelsEntity getHotel() {
return hotel;
}
public void setHotel(HotelsEntity hotel) {
this.hotel = hotel;
}
#Id
#Column(name = "id_room")
public int getIdRoom() {
return idRoom;
}
public void setIdRoom(int idRoom) {
this.idRoom = idRoom;
}
#Basic
#Column(name = "room_type")
public String getRoomType() {
return roomType;
}
public void setRoomType(String roomType) {
this.roomType = roomType;
}
#Basic
#Column(name = "people_capacity")
public int getPeopleCapacity() {
return peopleCapacity;
}
public void setPeopleCapacity(int peopleCapacity) {
this.peopleCapacity = peopleCapacity;
}
#Basic
#Column(name = "booked", columnDefinition = "BIT", length = 1)
public Boolean getBooked() {
return booked;
}
public void setBooked(Boolean booked) {
this.booked = booked;
}
#Basic
#Column(name = "locked", columnDefinition = "BIT", length = 1)
public Boolean getLocked() {
return locked;
}
public void setLocked(Boolean locked) {
this.locked = locked;
}
Could you please advise what is a way or ways to tell hibernate to stop this cycle?
p.s
This code contains another one issue. I f I remove one to one dependency and remain only one to many I receive failed to lazily initialize a collection of role: com.example.model.HotelsEntity.rooms, could not initialize proxy - no Session (through reference chain: java.util.ArrayList[0]->com.example.model.HotelsEntity["rooms"])
You need to mark entity as not serializable for JSON. Please use #JsonIgnore or #JsonIgnoreProperties("field") on one of the sides of the relations (the annotation is class-level).