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i am new to springboot and trying to get my head around hibernate mappings below is my code

and i am getting:
org.springframework.beans.factory.BeanCreationException:
Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]:
Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory;
nested exception is org.hibernate.MappingException: Could not determine type for: com.xib.assessment.model.Team, at table: agent, for columns: [org.hibernate.mapping.Column(team)]
below is my Agent.java
private Long id;
private String firstName;
private String lastName;
private String idNumber;
private Team team;
#Column(name="team")
public Team getTeam() {
return team;
}
public void setTeam(Team team) {
this.team = team;
}
#OneToOne
private Manager manager;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public Manager getManager() {
return manager;
}
public void setManager(Manager manager) {
this.manager = manager;
}
public String getIdNumber() {
return idNumber;
}
public void setIdNumber(String idNumber) {
this.idNumber = idNumber;
}
team.java
private Long teamId;
public Long getTeamId() {
return teamId;
}
public void setTeamId(Long teamId) {
this.teamId = teamId;
}
private String name;
#Column(name="agent")
private Agent agent;
#Column(name="manager")
public Manager getManager() {
return manager;
}
public void setManager(Manager manager) {
this.manager = manager;
}
#OneToOne
Manager manager;
public Agent getAgent() {
return agent;
}
public Team() {
super();
}
public void setAgent(Agent agent) {
this.agent = agent;
}
public Team(Long teamId, String name, Agent agent) {
this.teamId = teamId;
this.name = name;
this.agent = agent;
}
public String getName() {
return name;
}
public void setName(String name) {
}
manager.java
#Id
#GeneratedValue
private Long managerId;
private Team team;
#Column(name="team")
public Team getTeam() {
return team;
}
public void setTeam(Team team) {
this.team = team;
}
public Manager(Long managerId, Team team, String firstName, String lastName, String idNumber) {
super();
this.managerId = managerId;
this.team = team;
this.firstName = firstName;
this.lastName = lastName;
this.idNumber = idNumber;
}
public Manager() {
}
public String getFirstName() {
return firstName;
}
public Long getManagerId() {
return managerId;
}
public void setManagerId(Long managerId) {
this.managerId = managerId;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getIdNumber() {
return idNumber;
}
public void setIdNumber(String idNumber) {
this.idNumber = idNumber;
}
private String firstName;
private String lastName;
private String idNumber;
where :A manager can manage multiple teams, and any one team can be managed by at most 2 managers.
and : An agent can be assigned to only one team and reports to one manager.
how do you use hibernate to map the above , thank you in advance

This is an example for Team and Manager. Follow it with code style please
#Entity
class Manager {
#Id
#GeneratedValue
private Long id;
#OneToMany(mappedBy = "manager", fetch = FetchType.LAZY)
private List<Team> teams = new ArrayList<>();
}
#Entity
class Team {
#Id
#GeneratedValue
private Long id;
#ManyToOne(fetch = FetchType.LAZY)
private Manager manager;
}
Mixed field and method mapping
Don't mix mapping annotations on fields and methods. You will have unclear errors in that case.
Also you can learn a bit here
what is #JoinColumn and how it is used in Hibernate
Better to experiment with mappings using console application and checking SQL generated by Hibernate. You can use unit tests from this project for that
https://github.com/v-ladynev/hibernate-experimental

Spring Boot Hibernate CRUD REST API 404 Error

I am simply trying to create a Spring boot Hibernate CRUD REST API through this code:
EmployeController.java
#RestController
#RequestMapping("/api")
public class EmployeController {
#Autowired
private EmployeService employeService;
#GetMapping("/employe")
public List<Employe> get(){
return employeService.get();
}
}
Employe.java
#Entity
#Table(name="employe")
public class Employe {
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
#Column
private int id;
#Column
private String name;
#Column
private String gender;
#Column
private String department;
#Column
private Date dob;
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 String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public String getDepartment() {
return department;
}
public void setDepartment(String department) {
this.department = department;
}
public Date getDob() {
return dob;
}
public void setDob(Date dob) {
this.dob = dob;
}
#Override
public String toString() {
return "Employe [id=" + id + ", name=" + name + ", gender=" + gender + ", department=" + department + ", dob="
+ dob + "]";
}
}
EmployeService.java
public interface EmployeService {
List<Employe> get();
Employe get(int id);
void save(Employe employe);
void delete(int id);
}
EmployeServiceImplement.java
#Service
public class EmployeServiceImplement implements EmployeService {
#Autowired
private EmployeDAO employeDAO;
#Transactional
#Override
public List<Employe> get() {
return employeDAO.get();
}
}
EmployeDAO.java
public interface EmployeDAO {
List<Employe> get();
Employe get(int id);
void save(Employe employe);
void delete(int id);
}
EmployeDAOImplement.java
#Repository
public class EmployeDAOImplement implements EmployeDAO {
#Autowired
private EntityManager entityManager;
#Override
public List<Employe> get() {
Session currentSession = entityManager.unwrap(Session.class);
Query<Employe> query = currentSession.createQuery("from Employe", Employe.class);
List<Employe>list = query.getResultList();
return list;
}
}
I have write all the configuration related to MySQl database into the application.properties and when i run this project as Spring Boot App and go to the Postman and tried like this
and i a unable to understan why it always throws 404 error every time , can anyone tell me what i am missing in this code.

Try with this GET request, it may help you:
http://localhost:8080/api

I checked your code.
where is #RestController for your Controller file and where is #RequestMapping For your method in Controller class?
maybe you should write something like this according to your need.
tell me if you need more help.
#RestController
#RequestMapping("/api")
public class EmployeController {
#RequestMapping(value = "/employ")
public void employ() {
}
}

Instead of this -
#Override
public List get()
Use this -
#RequestMapping(value = "/Employe", method = RequestMethod.GET)
public List get()

Why projection fields are not getting set while fetching data using projection by joining two unrelated entities in JPA?

I am trying to get some specific column values using projection by joining two unrelated entities. But I am not getting any values.
Repository code is:-
#Repository
public interface PersonRepository extends CrudRepository<Person, Long> {
#Query("SELECT p.id,p.firstName,p.lastName,a.city FROM Person p INNER JOIN Address a on p.id = a.personId")
public List<PersonAndAddressSummary> findAllPersonSummary();
}
Person class
#Entity
public class Person {
#Id
private long id;
private String firstName;
private String lastName;
private long phone;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public long getPhone() {
return phone;
}
public void setPhone(long phone) {
this.phone = phone;
}
}
Address class
#Entity
public class Address {
#Id
private int id;
private String street;
private String state;
private int personId;
private String country;
private int houseNo;
private String city;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public int getPersonId() {
return personId;
}
public void setPersonId(int personId) {
this.personId = personId;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public int getHouseNo() {
return houseNo;
}
public void setHouseNo(int houseNo) {
this.houseNo = houseNo;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
}
Projection interface
public interface PersonAndAddressSummary {
public String getId();
public String getFirstName();
public String getLastName();
public String getCity();
}
After executing this Spring Boot application, the output I am getting is this.
[{"lastName":null,"firstName":null,"city":null,"id":null},{"lastName":null,"firstName":null,"city":null,"id":null},{"lastName":null,"firstName":null,"city":null,"id":null}]
Though there are records available which match perfectly for each Person in Address class(data available in person and address table).

If there is no join between two entities then you can't get data of other entity.Every repository is class specific in jpa. You have to define different projection for each class.
#Repository
public interface PersonRepository extends CrudRepository<Person, Long> {
#Query("SELECT p FROM Person p")
public List<PersonAndSummary> findAllPersonSummary();
}
#Repository
public interface AddressRepository extends CrudRepository<Address, Long> {
#Query("SELECT a FROM Address a where a.personId=:personId")
public AddressSummary findAddressSummary(#Param("personId") int personId);
}
public interface PersonSummary {
public String getId();
public String getFirstName();
public String getLastName();
}
public interface AddressSummary {
public String getCity();
}
public interface PersonAndAddressSummary extends PersonSummary, AddressSummary{
}
Now in your service class find list of personSummary. Now iterate this list and get AddressSummary by personId.
List<PersonSummary> personSummaryList = yourRepositoryName.findAllPersonSummary();
List<PersonAndAddressSummary> list = new ArrayList<>();
for(PersonSummary summary: personSummaryList){
AddressSummary addressSummary = repositoryName.findAddressSummary(summary.getId());
//now add required fields in your list
}

How to populate foreign key in table Spring + Hibernate + Spring Security

I want make a case, when user is authenticated by Spring Security and then he fill adres form I would like to automatically updated a foreign key column "adres_id" in user table. Please give me a tip how implement this in the most popular way
I how somethig like this
Address Table:
User Table:
Adres
#Entity
#Table(name="adres")
public class Adres {
#Id
#GeneratedValue(strategy = GenerationType.AUTO )
int id;
#Column(name="country", nullable=false)
private String country;
private String street;
private String postcode;
private String telephone;
private String pesel;
#OneToOne(mappedBy ="adres")
private User user;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getPostcode() {
return postcode;
}
public void setPostcode(String postcode) {
this.postcode = postcode;
}
public String getTelephone() {
return telephone;
}
public void setTelephone(String telephone) {
this.telephone = telephone;
}
public String getPesel() {
return pesel;
}
public void setPesel(String pesel) {
this.pesel = pesel;
}
public String getStreet() {
return postcode;
}
public void setStreet(String street) {
this.street = street;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
User
#Entity
#Table(name="users")
public class User {
#Id
#GeneratedValue(strategy = GenerationType.AUTO )
int id;
#Column(name="username", nullable=false)
private String username;
private String password;
private String email;
private Boolean enabled;
#OneToOne(cascade = CascadeType.ALL)
private Adres adres;
public Boolean getEnabled() {
return enabled;
}
public void setEnabled(Boolean enabled) {
this.enabled = enabled;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
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 int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
}
AdresDAO
#Repository
#Transactional
public class AdresDAOImpl implements AdresDAO{
#Autowired
SessionFactory sessionFactory;
public void addAdres(Adres adres) {
sessionFactory.getCurrentSession().save(adres);
}
public List<Adres> listAdres() {
return sessionFactory.getCurrentSession().createQuery("from Adres order by id").list();
}
public void removeAdres(int id) {
Adres adres = (Adres) sessionFactory.getCurrentSession().load(
Adres.class, id);
if (null != adres) {
sessionFactory.getCurrentSession().delete(adres);
}
}
public Adres getAdres(int id) {
return (Adres)sessionFactory.getCurrentSession().get(Adres.class, id);
}
public void editAdres(Adres adres) {
sessionFactory.getCurrentSession().update(adres);
}
}
AdresService
#Service
public class AdresServiceImpl implements AdresService{
#Autowired
AdresDAO adresDAO;
#Transactional
public void addAdres(Adres adres) {
adresDAO.addAdres(adres);
}
#Transactional
public void editAdres(Adres adres) {
adresDAO.editAdres(adres);
}
#Transactional
public List<Adres> listAdres() {
return adresDAO.listAdres();
}
#Transactional
public void removeAdres(int id) {
adresDAO.removeAdres(id);
}
#Transactional
public Adres getAdres(int id) {
return adresDAO.getAdres(id);
}
}

User unidirectional relation between User and Address if Address object does not supposed to know about its owner (generally it does not). I would prefer user id in Address table if a User have more than one Address (one-to-many relation).
But for your question you may design like that,
public class User{
...
#OneToOne(CascadeType.REMOVE)//this is for to remove address when user is removed
#JoinColumn(name="HOME_ADDRESS_ID")
private Address address;
...
}
and
public class Address {
#Id
#GeneratedValue(strategy = GenerationType.AUTO )
int id;
#Column(name="country", nullable=false)
private String country;
private String street;
private String postcode;
private String telephone;
private String pesel;
//no user object here
public int getId() {
return id;
}
...
}

JPA Entity being ignored

I'm trying to use JPA for the first time in a project. Most of my entities are working fine, but I am having trouble with one which is part of a Joined Inheritance Strategy.The entities are also being serialised by Jackson so they also have Json annotations.
The parent "User" class:
(Edit: added "Type" field)
#JsonTypeInfo(use=JsonTypeInfo.Id.NAME, include= JsonTypeInfo.As.WRAPPER_OBJECT)
#JsonTypeName("user")
#JsonSubTypes({
#JsonSubTypes.Type(name="customer", value=Customer.class),
#JsonSubTypes.Type(name="employee", value=Employee.class)})
#Entity(name = "User")
#Table(name="user")
#Inheritance(strategy = InheritanceType.JOINED)
#DiscriminatorColumn(name="type",discriminatorType = DiscriminatorType.INTEGER)
#NamedQuery(name="User.all",query = "select u from User u")
public abstract class User {
#Id
private String username;
#Column(name = "type",nullable = false)
private int type;
public User(){
}
public int getType() {
return type;
}
public void setType(int type) {
this.type = type;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public abstract Set<Order> getOrders();
}
A Child "Employee"
#JsonTypeName("employee")
#Entity(name="Employee")
#Table(name="employee")
#PrimaryKeyJoinColumn(name = "username",referencedColumnName = "username")
#DiscriminatorValue("1")
#NamedQuery(name = "Employee.all",query = "select e from Employee e")
public class Employee extends User implements Serializable{
private String username;
private String firstName;
private String lastName;
private String email;
#Convert(converter = LocalDatePersistenceConverter.class)
private LocalDate dateStarted;
#Convert(converter = LocalDatePersistenceConverter.class)
private LocalDate dateEnded;
#OneToMany(mappedBy = "employee",targetEntity = Order.class,fetch = FetchType.EAGER,cascade = CascadeType.PERSIST)
#JsonIgnore
private Set<Order> orders = new HashSet<>();
public Employee() {
}
#Override
public Set<Order> getOrders() {
return orders;
}
public void setOrders(Set<Order> orders) {
this.orders = orders;
}
public void addOrder(Order order){
orders.add(order);
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public void setEmail(String email) {
this.email = email;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getEmail() {
return email;
}
public String getDateStarted() {
if(dateStarted != null)
return dateStarted.toString();
else return null;
}
public void setDateStarted(LocalDate dateStarted) {
this.dateStarted = dateStarted;
}
public String getDateEnded() {
if(dateEnded != null)
return dateEnded.toString();
else return null;
}
public void setDateEnded(LocalDate dateEnded) {
this.dateEnded = dateEnded;
}
#Override
public String toString(){
return getUsername();
}
}
And a child "Customer":
(Edit: removed #Id field)
#JsonTypeName("customer")
#Entity(name="Customer")
#Table(name="customer")
#PrimaryKeyJoinColumn(name = "username",referencedColumnName = "username")
#DiscriminatorValue("2")
#NamedQueries({
#NamedQuery(name="Customer.all",query = "select c from Customer c")
})
public class Customer extends User implements Serializable{
public enum VIP_TYPE {NORMAL,SILVER,GOLD,DIAMOND}
#Transient
private static final int SILVER_THRESHOLD = 1000;
#Transient
private static final int GOLD_THRESHOLD = 2000;
#Transient
private static final int DIAMOND_THRESHOLD = 3000;
private String firstName;
private String lastName;
private String email;
private String address;
private String postcode;
private String mobileNumber;
private String homeNumber;
#Convert(converter = VipTypeConverter.class)
private VIP_TYPE vipGroup;
private String discount;
#OneToMany(mappedBy = "customer",targetEntity = Order.class,fetch=FetchType.EAGER,cascade = CascadeType.ALL)
#JsonIgnore
private Set<Order> orders = new HashSet<>();
public Customer() {
}
#Override
public Set<Order> getOrders() {
return orders;
}
public void setOrders(Set<Order> orders) {
this.orders = orders;
}
public void addOrder(final Order order){
orders.add(order);
updateVipGroup();
}
private void updateVipGroup() {
int sum = orders.stream().map(Order::getPayment).distinct().mapToInt(p->p.getAmmount()).sum();
if(sum > DIAMOND_THRESHOLD){
vipGroup = VIP_TYPE.DIAMOND;
return;
}
if(sum > GOLD_THRESHOLD){
vipGroup = VIP_TYPE.GOLD;
return;
}
if(sum > SILVER_THRESHOLD){
vipGroup = VIP_TYPE.SILVER;
return;
}
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public void setEmail(String email) {
this.email = email;
}
public void setAddress(String address) {
this.address = address;
}
public void setDiscount(String discount) {
this.discount = discount;
}
public void setVipGroup(VIP_TYPE vipGroup) {
this.vipGroup = vipGroup;
}
public void setHomeNumber(String homeNumber) {
this.homeNumber = homeNumber;
}
public void setMobileNumber(String mobileNumber) {
this.mobileNumber = mobileNumber;
}
public void setPostcode(String postcode) {
this.postcode = postcode;
}
public String getDiscount() {
return discount;
}
public VIP_TYPE getVipGroup() {
return vipGroup;
}
public String getFirstName() {
return firstName;
}
public String getLastName() {
return lastName;
}
public String getEmail() {
return email;
}
public String getAddress() {
return address;
}
public String getPostcode() {
return postcode;
}
public String getMobileNumber() {
return mobileNumber;
}
public String getHomeNumber() {
return homeNumber;
}
}
Persistence.xml
<?xml version="1.0" encoding="UTF-8"?>
<persistence xmlns="http://java.sun.com/xml/ns/persistence">
<persistence-unit name="local" transaction-type="JTA">
<provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
<jta-data-source>jdbc/cod</jta-data-source>
<class>com.technicalpioneers.cod.user.Customer</class>
<class>com.technicalpioneers.cod.user.Employee</class>
<class>com.technicalpioneers.cod.user.User</class>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
</persistence-unit>
</persistence>
Everything to do with "employee" works file, I can use the named query Employee.all to find all the employees in the database.
However, If I try to retrieve any customers I get errors. If I try to run the named query Customer.all I get:
java.lang.IllegalArgumentException: NamedQuery of name: Customer.all not found.
If I try to use EntityManager's find() method to find a particular customer I get:
javax.servlet.ServletException: Exception [EclipseLink-43] (Eclipse Persistence Services - 2.5.2.v20140319-9ad6abd): org.eclipse.persistence.exceptions.DescriptorException
Exception Description: Missing class for indicator field value [2] of type [class java.lang.Integer].
Descriptor: RelationalDescriptor(com.technicalpioneers.cod.user.User --> [DatabaseTable(user)])
I don't understand why the Customer entity is not being found by JPA. I've checked the user table and the "type" column is there with correct numbers, and #DescriminatorValue is set correctly. It's almost like the annotations are being ignored?
Have done many clean rebuilds and redeploys too. Any help would be very much appreciated!

I found this eventually. https://bugs.eclipse.org/bugs/show_bug.cgi?id=429992
It turns out EclipseLink will silently ignore entities with lambda expressions! Very annoying for it to not be at least mentioned in logs!
Thanks to everyone who took the time!