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Deserialize Exception in spring hibernate with OneToOne Mapping

I am using Spring boot 2.1.2 with hibernate , and i have simple two model classes like user and user account, and these 2 models are connected with oneToOne mapping. When we call user, i need to get user account also. I just mapped user account model to user model with oneToOne mapping. But when i call user am facing one Deserialize Exception.
User model
import java.io.Serializable;
import java.util.Calendar;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import javax.persistence.Table;
#Entity
#Table(name = "tbl_user")
public class User implements Serializable{
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "id")
private Integer id;
#OneToOne(fetch = FetchType.EAGER)
#JoinColumn(name = "user_account_id")
UserAccount userAccount;
#Column(name = "first_name",nullable = false)
private String firstName;
#Column(name = "active",nullable = false)
private Integer active;
#Column(name = "created_date",nullable = false)
private Calendar createdDate;
#Column(name = "created_by",nullable = false)
private Integer created_by;
#Column(name = "updated_date")
private Calendar updatedDate;
#Column(name = "updated_by")
private Integer updated_by;
public User() {
super();
// TODO Auto-generated constructor stub
}
public User(Integer id, UserAccount userAccount, String firstName, Integer active, Calendar createdDate,
Integer created_by, Calendar updatedDate, Integer updated_by) {
super();
this.id = id;
this.userAccount = userAccount;
this.firstName = firstName;
this.active = active;
this.createdDate = createdDate;
this.created_by = created_by;
this.updatedDate = updatedDate;
this.updated_by = updated_by;
}
public Integer getId() {
return id;
}
public UserAccount getUserAccount() {
return userAccount;
}
public void setUserAccount(UserAccount userAccount) {
this.userAccount = userAccount;
}
public void setId(Integer id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public Integer getActive() {
return active;
}
public void setActive(Integer active) {
this.active = active;
}
public Calendar getCreatedDate() {
return createdDate;
}
public void setCreatedDate(Calendar createdDate) {
this.createdDate = createdDate;
}
public Integer getCreated_by() {
return created_by;
}
public void setCreated_by(Integer created_by) {
this.created_by = created_by;
}
public Calendar getUpdatedDate() {
return updatedDate;
}
public void setUpdatedDate(Calendar updatedDate) {
this.updatedDate = updatedDate;
}
public Integer getUpdated_by() {
return updated_by;
}
public void setUpdated_by(Integer updated_by) {
this.updated_by = updated_by;
}
}
UserAccount Model
import java.io.Serializable;
import java.util.Calendar;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name = "tbl_user_account")
public class UserAccount implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
#Column(name = "id")
private Integer id;
#Column(name = "usere_name",nullable = false)
UserAccount usereName;
#Column(name = "password", nullable = false)
private String password;
#Column(name = "active",nullable = false)
private Integer active;
#Column(name = "created_date",nullable = false)
private Calendar createdDate;
#Column(name = "created_by",nullable = false)
private Integer created_by;
#Column(name = "updated_date")
private Calendar updatedDate;
#Column(name = "updated_by")
private Integer updated_by;
public UserAccount(Integer id, UserAccount usereName, String password,Integer active,
Calendar createdDate, Integer created_by, Calendar updatedDate, Integer updated_by) {
super();
this.id = id;
this.usereName = usereName;
this.password = password;
this.active = active;
this.createdDate = createdDate;
this.created_by = created_by;
this.updatedDate = updatedDate;
this.updated_by = updated_by;
}
public UserAccount() {
super();
// TODO Auto-generated constructor stub
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public UserAccount getUsereName() {
return usereName;
}
public void setUsereName(UserAccount usereName) {
this.usereName = usereName;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public Integer getActive() {
return active;
}
public void setActive(Integer active) {
this.active = active;
}
public Calendar getCreatedDate() {
return createdDate;
}
public void setCreatedDate(Calendar createdDate) {
this.createdDate = createdDate;
}
public Integer getCreated_by() {
return created_by;
}
public void setCreated_by(Integer created_by) {
this.created_by = created_by;
}
public Calendar getUpdatedDate() {
return updatedDate;
}
public void setUpdatedDate(Calendar updatedDate) {
this.updatedDate = updatedDate;
}
public Integer getUpdated_by() {
return updated_by;
}
public void setUpdated_by(Integer updated_by) {
this.updated_by = updated_by;
}
}
Property file
# Application running port
server.port=8000
# Application running port
server.servlet.contextPath=/app
# Log files
logging.level.org.springframework.web: DEBUG
logging.level.org.hibernate: ERROR
#DB config
spring.datasource.url=jdbc:mysql://localhost:3306/db_name
spring.datasource.username=root
spring.datasource.password=root
spring.jpa.show-sql=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.hibernate.naming.physical-strategy=org.hibernate.boot.model.naming.PhysicalNamingStrategyStandardImpl
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect

The problem seems to be in UserAccount class, where you defined usereName field as UserAccount type.
I think it should be a String.

Why does JPA execute a delete statement for the wrong table?

I am programming a simple forum using Java EE. The forum has thread and post entities. All the basic CRUD operations for the posts and threads are working.
Only when I try to delete a thread, JPA is making a wrong SQL statement and I don't understand why. I am using the Oracle 11g database.
Wrong statement from JPA:
delete from THREAD_POST where Thread_id=?
How it should be:
delete from FORUM.THREAD where Thread.id=?
It looks like JPA is trying to use a join table between thread and post.
Hope fully someone can point me to the right direction to fix this error.
The code I execute to delete a thread:
#PersistenceContext
private EntityManager em;
em.remove(em.find(Thread.class, id));
My Thread entity:
package ee.forum.ejb.model;
import javax.persistence.*;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
#Entity
#Table(schema = "FORUM", name = "THREAD")
public class Thread implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#SequenceGenerator(
name = "THREAD_ID_GENERATOR",
sequenceName = "SEQ_THREAD",
schema = "FORUM",
allocationSize = 1,
initialValue = 1
)
#GeneratedValue(
strategy = GenerationType.SEQUENCE,
generator = "THREAD_ID_GENERATOR"
)
private Long id;
#NotNull
#Size(max = 20)
private String name;
#NotNull
#ManyToOne
private Board board;
#NotNull
#ManyToOne
private User author;
#NotNull
#Temporal(TemporalType.TIMESTAMP)
private Date created;
#OneToMany
private List<Post> posts;
public Thread() {}
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 Board getBoard() {
return board;
}
public void setBoard(Board board) {
this.board = board;
}
public User getAuthor() {
return author;
}
public void setAuthor(User author) {
this.author = author;
}
public Date getCreated() {
return created;
}
public void setCreated(Date created) {
this.created = created;
}
public List<Post> getPosts() {
return posts;
}
public void setPosts(List<Post> posts) {
this.posts = posts;
}
public boolean addPost(Post post) {
if (posts == null) {
posts = new ArrayList<>();
}
post.setThread(this);
return this.posts.add(post);
}
}
And my Post entity:
package ee.forum.ejb.model;
import javax.persistence.*;
import javax.validation.constraints.NotNull;
import javax.validation.constraints.Size;
import java.io.Serializable;
import java.util.Date;
#Entity
#Table(schema = "FORUM", name = "POST")
public class Post implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#SequenceGenerator(
name = "POST_ID_GENERATOR",
sequenceName = "SEQ_POST",
schema = "FORUM",
allocationSize = 1,
initialValue = 1
)
#GeneratedValue(
strategy = GenerationType.SEQUENCE,
generator = "POST_ID_GENERATOR"
)
private Long id;
#NotNull
#Size(min = 5, max = 1000)
private String text;
#NotNull
#ManyToOne
private Thread thread;
#NotNull
#ManyToOne
private User author;
#NotNull
#Temporal(TemporalType.TIMESTAMP)
private Date created;
public Post() {}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public Thread getThread() {
return thread;
}
public void setThread(Thread thread) {
this.thread = thread;
}
public User getAuthor() {
return author;
}
public void setAuthor(User author) {
this.author = author;
}
public Date getCreated() {
return created;
}
public void setCreated(Date created) {
this.created = created;
}
}

Join in hibernate with annotaion

I am trying to perform join in hibernate and i am using struts2.
I am working with hibernate using annotaions. Now i am unable to perform join between two tables.My first table is "studentprojects" which contain pid and email.Second table is "initialprojectdetials" which contains pid,name,description... similarly some other fields.I have to get the data of second table by performing join around pid of first table.
For this am using this query:
String hql="from InitialProjectDTO I join I.projectId S where I.projectId=:id";
Query query=session.createQuery(hql);
query.setParameter("id", id);
mail =query.list();
where mail is the arraylist of InitialProjectDTO.
And my InitialProjectDTO is:
package edu.pma.dto;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.OneToMany;
import javax.persistence.Table;
#Entity
#Table(name="initialprojectdetail")
public class InitialProjectDTO {
#Id
#Column(name="projectId")
#OneToMany(cascade=CascadeType.ALL)
#JoinTable(name="studentprojects",joinColumns=#JoinColumn(name="projectId"))
int projectId;
#Column(name="name")
String name;
#Column(name="description")
String description;
#Column(name="technology")
String technology;
#Column(name="guide")
String guide;
#Column(name="duration")
int duration;
#Column(name="status")
String status;
#Column(name="report")
String report;
public String getReport() {
return report;
}
public void setReport(String report) {
this.report = report;
}
public int getProjectId() {
return projectId;
}
public void setProjectId(int projectId) {
this.projectId = projectId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
public String getTechnology() {
return technology;
}
public void setTechnology(String technology) {
this.technology = technology;
}
public String getGuide() {
return guide;
}
public void setGuide(String guide) {
this.guide = guide;
}
public int getDuration() {
return duration;
}
public void setDuration(int duration) {
this.duration = duration;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
}
my SudentProjectDTO is:
package edu.pma.dto;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
#Entity
#Table(name="studentprojects")
public class StudentProjectDTO {
public int getProjectId() {
return projectId;
}
public void setProjectId(int projectId) {
this.projectId = projectId;
}
#Id
#Column(name="email")
String email;
#Column(name="projectId")
int projectId;
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
}
This is the error which i am getting:
Illegal attempt to map a non collection as a #OneToMany, #ManyToMany or #CollectionOfElements: edu.pma.dto.InitialProjectDTO.projectId
Method "execute" failed for object edu.pma.actions.LoginAction#1096a56
File: org/hibernate/cfg/annotations/CollectionBinder.java

You should try to use different models
#Entity
public class InitialProjectDTO {
#OneToMany(mappedBy = "project")
private Collection<StudentProjectDTO> students;
}
#Entity
public class StudentProjectDTO {
#ManyToOne
private InitialProjectDTO project;
}
And with the proper model it shuld be easy to write hql, you might want to look here for examples https://docs.jboss.org/hibernate/orm/3.3/reference/en/html/queryhql.html.
Also I would suggest to look here for example of models. http://viralpatel.net/blogs/hibernate-one-to-many-annotation-tutorial/

See following example might its help to you
#Entity
#Table(name="initialprojectdetail")
public class InitialProjectDTO {
private Integer initialProjectDTOId;
private Set<StudentProjectDTO > studentProjectDTO = new HashSet<StudentProjectDTO >(0);
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name = "initial_projectDTO_id", unique = true, nullable = false)
public Integer getInitialProjectDTOId() {
return this.initialProjectDTOId;
}
public void setInitialProjectDTOId(Integer initialProjectDTOId) {
this.initialProjectDTOId = initialProjectDTOId;
}
#OneToMany(mappedBy = "studentprojects", cascade = CascadeType.ALL, fetch=FetchType.LAZY)
public Set<StudentProjectDTO> getUserRole() {
return this.studentProjectDTO;
}
public void setUserRole(Set<StudentProjectDTO> studentProjectDTO) {
this.studentProjectDTO = studentProjectDTO;
}
}
#Entity
#Table(name="studentprojects")
public class StudentProjectDTO {
private InitialProjectDTO project;
#ManyToOne(cascade = CascadeType.ALL)
#JoinColumn(name = "initial_projectDTO_id", nullable = false)
public User getProject() {
return this.project;
}
public void setProject(InitialProjectDTO project) {
this.project = project;
}
}
your Query shoud be something like this
String hql="SELECT ip from InitialProjectDTO ip JOIN ip.studentProjectDTO sp WHERE sp.projectId = :id";
Query query=session.createQuery(hql);
query.setParameter("id", id);
mail =query.list();

Mapped Entity null on #OneToOne with #JoinColumn

I get the mapped entity always null but, FetchType.EAGER is set already. I have a Booking entity class that maps to two other entities - Slot and Subscriber. Both the entities are null when I fetch the booking entity
Booking class
import java.util.Date;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Version;
#Entity
#Table(name = "BOOKING")
public class Booking {
public Booking(){
}
#Id #GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name = "id")
private Integer id;
#Column(name = "title")
private String title;
#Column(name = "descr")
private String desc;
#OneToOne(fetch=FetchType.EAGER)
#JoinColumn(name = "slotid",insertable = false, updatable = false)
private Slot slot;
private Integer slotid;
private Integer subscriberid;
#OneToOne(fetch=FetchType.EAGER)
#JoinColumn(name = "subscriberid",insertable = false, updatable = false)
private User subscriber;
#Column(name = "created")
#Temporal(TemporalType.TIMESTAMP)
private Date created;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
#OneToOne(fetch=FetchType.EAGER)
#JoinColumn(name = "slotid",referencedColumnName="slotid")
public Slot getSlot() {
return slot;
}
public void setSlot(Slot slot) {
this.slot = slot;
}
#OneToOne(fetch=FetchType.EAGER)
#JoinColumn(name = "subscriberid",referencedColumnName="userid")
public User getSubscriber() {
return subscriber;
}
public void setSubscriber(User subscriber) {
this.subscriber = subscriber;
}
public Date getCreated() {
return created;
}
public void setCreated(Date created) {
this.created = created;
}
public String getDesc() {
return desc;
}
public void setDesc(String desc) {
this.desc = desc;
}
public Integer getSlotid() {
return slotid;
}
public void setSlotid(Integer slotid) {
this.slotid = slotid;
}
public Integer getSubscriberid() {
return subscriberid;
}
public void setSubscriberid(Integer subscriberid) {
this.subscriberid = subscriberid;
}
}
Slot class
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
import javax.persistence.Version;
#Entity
#Table(name="SLOT")
public class Slot {
public Slot(){
}
#Id #GeneratedValue(strategy=GenerationType.IDENTITY)
#Column(name="slotid")
private Integer id;
#OneToOne(fetch=FetchType.EAGER)
#JoinColumn(name="ownerid",insertable = false, updatable = false)
private User user;
#Column(name="startdate")
private Date startdate;
#Column(name="enddate")
private Date enddate;
#Column(name="status")
private String status;
private Integer ownerid;
#Temporal(TemporalType.TIMESTAMP)
#Column(name = "created", nullable = false, updatable=false)
#Version
private Date created;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public User getUser() {
return this.user;
}
public void setUser(User owner) {
this.user = owner;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public Integer getOwnerid() {
return ownerid;
}
public void setOwnerid(Integer ownerid) {
this.ownerid = ownerid;
}
public Date getCreated() {
return created;
}
public void setCreated(Date created) {
this.created = created;
}
public Date getStartdate() {
return startdate;
}
public void setStartdate(Date startdate) {
this.startdate = startdate;
}
public Date getEnddate() {
return enddate;
}
public void setEnddate(Date enddate) {
this.enddate = enddate;
}
}
Subscriber - User class
import java.util.Date;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
import javax.persistence.PrimaryKeyJoinColumn;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
#Entity
#Table(name="users")
public class User {
public User(){
}
#Id#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name="userid")
private Integer userid = 0;
#Column(name = "name")
private String name;
#Column(name = "mobile")
private String mobile;
#Column(name = "password")
private String password;
#Column(name = "email")
private String email;
#Column(name = "type")
private String userType;
#OneToOne(fetch=FetchType.EAGER)
#JoinColumn(name="cityid",insertable = false, updatable = false)
private City city;
private String cityid;
#OneToOne(fetch=FetchType.EAGER)
#JoinColumn(name="specialityid",insertable = false, updatable = false)
private Speciality speciality;
private Integer specialityid;
#Column(name="medregno")
private String regno;
#Column(name="refcode")
private String referalcode;
public String getRegno() {
return regno;
}
public void setRegno(String regno) {
this.regno = regno;
}
public String getReferalcode() {
return referalcode;
}
public void setReferalcode(String referalcode) {
this.referalcode = referalcode;
}
#Column(name = "gender")
private String gender;
#Column(name = "active")
private boolean active;
#Temporal(TemporalType.TIMESTAMP)
#Column(name = "updated")
private Date updated;
#Temporal(TemporalType.TIMESTAMP)
#Column(name = "created")
private Date created;
#Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (getClass() != obj.getClass())
return false;
User other = (User) obj;
if (userid != other.userid)
return false;
return true;
}
public Integer getUserid() {
return userid;
}
public void setUserid(Integer userid) {
this.userid = userid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getMobile() {
return mobile;
}
public void setMobile(String mobile) {
this.mobile = mobile;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
public String getUserType() {
return userType;
}
public void setUserType(String userType) {
this.userType = userType;
}
public City getCity() {
return city;
}
public void setCity(City city) {
this.city = city;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public boolean isActive() {
return active;
}
public void setActive(boolean active) {
this.active = active;
}
public Date getCreated() {
return created;
}
public void setCreated(Date created) {
this.created = created;
}
public Date getUpdated() {
return updated;
}
public void setUpdated(Date updated) {
this.updated = updated;
}
public String getCityid() {
return cityid;
}
public void setCityid(String cityid) {
this.cityid = cityid;
}
public Speciality getSpeciality() {
return speciality;
}
public void setSpeciality(Speciality speciality) {
this.speciality = speciality;
}
public Integer getSpecialityid() {
return specialityid;
}
public void setSpecialityid(Integer specialityid) {
this.specialityid = specialityid;
}
}
booking.getSlot() and booking.getSubscriber() returns null
Please let me know if i miss some configuration while mapping
EDIT1
Added code how the entity is getting loaded
public Booking addBooking(String title,String desc,int slotid,int subscriberid,Session session){
Booking booking = new Booking();
booking.setTitle(title);
booking.setDesc(desc);
booking.setSlotid(slotid);
booking.setSubscriberid(subscriberid);
booking.setCreated(new Date());
Integer bookingid = (Integer) session.save(booking);
session.flush();
Booking bookingEntity = (Booking) session.createQuery("From Booking where id = ?").
setParameter(0, bookingid).list().get(0);
return bookingEntity;
}
I am saving the entity and reloading it.

It's not working because Hibernate is retuning the same instance it has already in its 1st level cache, which doesn't have a reference to any of the 2 other entities.
To fix this, you have to do a session.refresh(booking) rather than executing a query.

In your code :
booking.setSlotid(slotid);
booking.setSubscriberid(subscriberid);
You're just setting Integer values and not objects. Instead of this, try to set objects :
booking.setSlot(new Slot(slotid));
booking.setSubscriber(new Subscriber(subscriberid));
But as #Augusto said, the associations you're having in the session (Slot and Subscriber) are not full objects they contain only their ids. That's why you can't get other fields of these objects.

MappedBy in a OneToOne Mapping

I have created Three classes- User, UserSubscription and Subscription. I want that users in the UserSubscription table should be referenced by the users existing in the User table. So, how to use mappedBy?
The classes are as follows:
User:
package com.model;
import java.util.HashSet;
import java.util.Set;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.FetchType;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinTable;
import javax.persistence.ManyToMany;
import javax.persistence.OneToOne;
#Entity
public class User {
private int userId;
private String password;
private String contact;
private String firstName;
private String lastName;
private String gender;
private String address;
private int age;
private String email;
private String countBooks;
private Set<Language> languages = new HashSet<Language>(0);
private Set<Book> favorites = new HashSet<Book>(0);
#Id
#GeneratedValue
#Column(name="User_Id")
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
this.userId = userId;
}
#Column(name="Password")
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
#Column(name="Contact")
public String getContact() {
return contact;
}
public void setContact(String contact) {
this.contact = contact;
}
#Column(name="First_Name")
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
#Column(name="Last_Name")
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
#Column(name="Gender")
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
#Column(name="Address")
public String getAddress() {
return address;
}
public void setAddress(String address) {
this.address = address;
}
#Column(name="Age")
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
#Column(name="Email")
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
#Column(name="Count_Books")
public String getCountBooks() {
return countBooks;
}
public void setCountBooks(String countBooks) {
this.countBooks = countBooks;
}
#ManyToMany(cascade=CascadeType.ALL)
#JoinTable(name="User_Language", joinColumns = {
#JoinColumn(name = "User_Id", nullable = false, updatable = false) },
inverseJoinColumns = { #JoinColumn(name = "Language_Id",
nullable = false, updatable = false) })
public Set<Language> getLanguages() {
return languages;
}
public void setLanguages(Set<Language> languages) {
this.languages = languages;
}
#ManyToMany
#JoinTable(name="User_Favorite", joinColumns = {
#JoinColumn(name = "User_Id", nullable = false, updatable = false) },
inverseJoinColumns = { #JoinColumn(name = "Book_Id",
nullable = false, updatable = false) })
public Set<Book> getFavorites() {
return favorites;
}
public void setFavorites(Set<Book> favorites) {
this.favorites = favorites;
}
}
UserSubscription:
package com.model;
import java.sql.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
import javax.persistence.OneToOne;
#Entity
public class UserSubscription {
private int userSubscriptionId;
private Subscription subscription;
private User user;
private Date subscriptionStartDate;
private Date subscriptionEndDate;
private int status;
#Id
#GeneratedValue
#Column(name="User_Subscription_Id")
public int getUserSubscriptionId() {
return userSubscriptionId;
}
public void setUserSubscriptionId(int userSubscriptionId) {
this.userSubscriptionId = userSubscriptionId;
}
#Column(name="Subscription_Id")
public Subscription getSubscription() {
return subscription;
}
public void setSubscription(Subscription subscription) {
this.subscription = subscription;
}
#OneToOne(mappedBy="userId")
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
#Column(name="Subscription_Start_Date")
public Date getSubscriptionStartDate() {
return subscriptionStartDate;
}
public void setSubscriptionStartDate(Date subscriptionStartDate) {
this.subscriptionStartDate = subscriptionStartDate;
}
#Column(name="Subscription_End_Date")
public Date getSubscriptionEndDate() {
return subscriptionEndDate;
}
public void setSubscriptionEndDate(Date subscriptionEndDate) {
this.subscriptionEndDate = subscriptionEndDate;
}
#Column(name="Status")
public int getStatus() {
return status;
}
public void setStatus(int status) {
this.status = status;
}
}
Subscription:
package com.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
#Entity
public class Subscription {
private int subscriptionId;
private String name;
private int period;
private float fees;
private int noOfBooks;
private int Status;
#Id
#GeneratedValue
public int getSubscriptionId() {
return subscriptionId;
}
public void setSubscriptionId(int subscriptionId) {
this.subscriptionId = subscriptionId;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getPeriod() {
return period;
}
public void setPeriod(int period) {
this.period = period;
}
public float getFees() {
return fees;
}
public void setFees(float fees) {
this.fees = fees;
}
public int getNoOfBooks() {
return noOfBooks;
}
public void setNoOfBooks(int noOfBooks) {
this.noOfBooks = noOfBooks;
}
public int getStatus() {
return Status;
}
public void setStatus(int status) {
Status = status;
}
}
Exception while executing:
Exception in thread "main" org.hibernate.AnnotationException: Referenced property not a (One|Many)ToOne: com.model.User.userId in mappedBy of com.model.UserSubscription.user
at org.hibernate.cfg.OneToOneSecondPass.doSecondPass(OneToOneSecondPass.java:248)
at org.hibernate.cfg.Configuration.originalSecondPassCompile(Configuration.java:1695)
at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1424)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1844)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1928)
at com.impetus.model.Check.main(Check.java:92)

In your code, user-user_subscription looks uni-directional. 'mappedby' should be used in bi-directional relationship.
You can use following code in user entity to make it bi-directional with user_subscription.
private UserSubscription userSubscription;
#OneToOne
public User getUserSubscription() {
return userSubscription;
}
Or remove mappedby from user_subscription and make it unidirectional.

Seems you are unsure of what mappedBy is used for or means. Database relationships are one sided; one table will have a foreign key reference to the target table. In JPA, you might map this relationship as a OneToOne and specify the foreign key to use with the #JoinColumn annotation:
#OneToOne(mappedBy="userId")
#JoinColumn(name = "USER_ID")
public User getUser() {
return user;
}
The Join column definition is optional, and if not used JPA will default to using the attribute name with "_" and the target entity's ID name prepended, so "USER_ID" in this case anyway.
Back to the database, because target table is referenced by the source table, this forms another implicit relationship back (the target table's ID can be used to look up the other table's foreign key). In JPA, this can be mapped again as a OneToOne or a OneToMany depending on the cardinality. If it is a OneToOne, you specify that this relationship does not define the foreign key by marking it as mappedBy the other relationship:
#OneToOne(mappedBy="user")
public UserSubscription getUserSubscription() {
return userSubscription;
}
But it is more likely a User will have multiple userSubscriptions:
#OneToMany(mappedBy="user")
public Collection<UserSubscription> getUserSubscriptions () {
return userSubscription ;
}
In both cases, you use the mappedBy to signal that there is a 'user' attribute in the target entity that defines a relationship to this entity and controls the foreign key setting in the database.
You also need to change how your define the UserSubscription->Subscription relationship, as you have defined an #Column on what appears to be a relationship. It should probably be
#OneToOne
#JoinColumn(name="Subscription_Id")
public Subscription getSubscription() {
return subscription;
}

you should have UserSubscription memeber and corrosponding gettes and setters in your User class like below:
private Set<Company> userSubscriptions = new HashSet<Company>(0);
#OneToMany(cascade = CascadeType.ALL, fetch = FetchType.LAZY, mappedBy = "user")
public Set<UserSubscription> getUserSubscriptions() {
return this.userSubscriptions ;
}
public void setUserSubscriptions(Set<UserSubscription> userSubscriptions ) {
this.userSubscriptions = userSubscriptions ;
}
and same way you should have user object as memeber in UserSubscription Entity class.
private User user;
#ManyToOne(fetch = FetchType.LAZY)
#JoinColumn(name = "USER_ID", nullable = false)
public User getUser() {
return this.user;
}
public void setUser(User user) {
this.user = user;
}

You are doing it wrong
class User {
UserSubscription userSubscription ;
#OneToOne
public UserSubscription getUserSubscription(){
return userSubscription ;
}
public void setUserSubscription(UserSubscription userSubscription ){
this.userSubscription = userSubscription ;
}
}
class UserSubscription {
#OneToOne(mappedBy="userSubscription")
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
}