I am trying to use Spring-Data-Cassandra with UserDefinedType and Compound Query Key. I am using 1.5.0.DATACASS-172-SNAPSHOT of the spring-cql and spring-data-cassandra. The code throws below exception.
Caused by: org.springframework.cassandra.support.exception.CassandraInvalidQueryException:
String didn't validate.; nested exception is com.datastax.driver.core.exceptions.InvalidQueryException:
String didn't validate.
Below is my code
#PrimaryKeyClass
public class EmployeeIdKey implements Serializable {
#PrimaryKeyColumn(ordinal = 0, type = PrimaryKeyType.PARTITIONED,name = "id")
#CassandraType(type = DataType.Name.UUID)
private UUID id;
#PrimaryKeyColumn(ordinal = 1,type = PrimaryKeyType.CLUSTERED, name = "user_id")
#CassandraType(type = DataType.Name.TEXT)
private String userId;
public EmployeeIdKey(){
id = null;
userId = null;
}
public UUID getUuId() {
return id;
}
public void setUuId(UUID uuId) {
this.id = uuId;
}
public String getUserId() {
return userId;
}
public void setUserId(String userId) {
this.userId = userId;
}
}
Employee.java
#Table("employee")
public class Employee {
#PrimaryKey
private EmployeeIdKey id;
private Person person;
#Column("employee_no")
private String employeeNo;
#Column("email_ids")
private List<String> emailId;
//Getters and setters
}
Person.java
#UserDefinedType
public class Person {
public Person(String firstName, String lastName) {
this.firstName = firstName;
this.lastName = lastName;
}
#Column("first_name")
private String firstName;
#Column("last_name")
private String lastName;
// Getters adn setters;
}
EmployeeRepository.java
public interface EmployeeRepository extends TypedIdCassandraRepository<Employee,EmployeeIdKey> {
}
App.java
#SpringBootApplication
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class);
}
#Bean
public CommandLineRunner demo( EmployeeRepository repository) {
Employee employee = new Employee();
EmployeeIdKey key = new EmployeeIdKey();
key.setUserId("55550");
key.setUuId(UUID.randomUUID());
employee.setId(key);
List<String> emailIds = Arrays.asList("myemail#domain.com","myemail2#domain2.com");
employee.setEmailId(emailIds);
Person person = new Person("John", "Mathew");
employee.setPerson(person);
repository.save(employee);
return null;
}
}
When I use simple primary key it works well.
Related
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
I have three entity classes, I have written the query which includes join of two tables.
Table: ExpensesCategories
#Entity
#Table(name = "ExpensesCategories")
public class ExpensesCategories {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "category_id", unique = true)
private int categoryId;
#NotNull
private String categoryName;
#NotNull
private String categoryCodeInBankStats;
public int getCategoryId() {
return categoryId;
}
public void setCategoryId(int categoryId) {
this.categoryId = categoryId;
}
public String getCategoryName() {
return categoryName;
}
public void setCategoryName(String categoryName) {
this.categoryName = categoryName;
}
public String getCategoryCodeInBankStats() {
return categoryCodeInBankStats;
}
public void setCategoryCodeInBankStats(String categoryCodeInBankStats) {
this.categoryCodeInBankStats = categoryCodeInBankStats;
}
}
Table: Transactions
#Entity
#Table(name = "TransactionHistory")
public class TransactionHistory {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private int id;
#Temporal(TemporalType.DATE)
private Date dateOfTransaction;
private String transactionType;
private String refNo;
private Date valueDate;
private double withdrawalAmount;
private double depositAmount;
private double closingBalance;
#ManyToOne
#JoinColumn(name="userDetailsId", referencedColumnName="user_id")
private UserDetails userDetails;
#ManyToOne
#JoinColumn(name="expenseCategoriesId", referencedColumnName="category_id")
private ExpensesCategories expenseCategories;
public TransactionHistory(int userId, Date dateOfTransaction, String transactionType, String refNo, Date valueDate,
double withdrawalAmount, double depositAmount, double closingBalance) {
this.dateOfTransaction = dateOfTransaction;
this.transactionType = transactionType;
this.refNo = refNo;
this.valueDate = valueDate;
this.withdrawalAmount = withdrawalAmount;
this.depositAmount = depositAmount;
this.closingBalance = closingBalance;
}
public TransactionHistory() {
}
public Date getDateOfTransaction() {
return dateOfTransaction;
}
public void setDateOfTransaction(Date date) {
this.dateOfTransaction = date;
}
public String getTransactionType() {
return transactionType;
}
public void setTransactionType(String transactionType) {
this.transactionType = transactionType;
}
public String getRefNo() {
return refNo;
}
public void setRefNo(String refNo) {
this.refNo = refNo;
}
public Date getValueDate() {
return valueDate;
}
public void setValueDate(Date valueDate) {
this.valueDate = valueDate;
}
public double getWithdrawalAmount() {
return withdrawalAmount;
}
public void setWithdrawalAmount(double withdrawalAmount) {
this.withdrawalAmount = withdrawalAmount;
}
public double getDepositAmount() {
return depositAmount;
}
public void setDepositAmount(double depositAmount) {
this.depositAmount = depositAmount;
}
public double getClosingBalance() {
return closingBalance;
}
public void setClosingBalance(double closingBalance) {
this.closingBalance = closingBalance;
}
public UserDetails getUserDetails() {
return userDetails;
}
public void setUserDetails(UserDetails userDetails) {
this.userDetails = userDetails;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public ExpensesCategories getExpenseCategories() {
return expenseCategories;
}
public void setExpenseCategories(ExpensesCategories expenseCategories) {
this.expenseCategories = expenseCategories;
}
}
Table: User Details
#Entity
#Table(name = "Employee")
public class UserDetails {
#Id
#Column(name = "user_id", unique = true)
private int id;
#NotNull
private String firstname;
#NotNull
private String lastname;
#Column(unique = true)
#NotNull
private String emailaddress;
#NotNull
private String role;
public UserDetails(String firstname, String lastname, String emailaddress, String role) {
this.firstname = firstname;
this.lastname = lastname;
this.emailaddress = emailaddress;
this.role = role;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public UserDetails() {
}
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 String getEmailaddress() {
return emailaddress;
}
public void setEmailaddress(String emailaddress) {
this.emailaddress = emailaddress;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
#Override
public String toString() {
return "Employee [id=" + id + ", firstname=" + firstname + ", lastname=" + lastname + ", emailaddress="
+ emailaddress + ", role=" + role + "]";
}
I have written query like this in transaction entity.
#Query( nativeQuery=true, value="SELECT a.expense_categories_id, a.Total_withdrawal_Amount, b.category_code_in_bank_stats, b.category_name FROM (SELECT expense_categories_id , SUM(withdrawal_amount) AS Total_withdrawal_Amount FROM transaction_history GROUP BY expense_categories_id) a join expenses_categories b on a.expense_categories_id = b.category_id
")
List<Object[]> getCategorizedExpenses();
My Json Response is like:
[
[
1,
21,
"UPI",
"UPI Payments"
],
[
2,
3733.59,
"POS",
"Shopping"
]
]
But i want json response with column names as well:
[
[
expense_categories_id: 1,
Total_withdrawal_Amount: 21,
category_code_in_bank_stats: "UPI",
category_name: "UPI Payments"
],
[
expense_categories_id: 2,
Total_withdrawal_Amount: 3733.59,
category_code_in_bank_stats: "POS",
category_name: "Shopping"
]
]
Please help me out..
You would need to map the results directly to a POJO class and ad some json config:
1) Define the pojo
public ResultClass implements Serializable{
#JsonProperty("expense_categories_id")
private Integer expenseCategoriesId;
...
public ResultClass(Integer expenseCategoriesId ... // rest params){
this.expenseCategoriesId = expenseCategoriesId;
...
}
}
2) Define the mapping:
#SqlResultSetMapping(
name="myMapping",
classes={
#ConstructorResult(
targetClass=ResultClass.class,
columns={
#ColumnResult(name="expenseCategoriesId"),
#ColumnResult(name="totalWithdrawalAmount")
// further mappings ...
}
)
}
)
3) Define a native query
#NamedNativeQuery(name="TransactionHistory.myQuery"
, query="SELECT new mypackage.ResultClass(a.expense_categories_id as expeneCategoriesId ... ) from ...")
4) Define this method in the CrudRepository without the #Query annotation:
public List<ResultClass> myQuery();
Teh #SqlResultSetMapping and #NamedNativeQuery would need to be defined on one of your mapped entities.
Your native query will give you an object[][] as an result. So, it actually a mxn rows.
So,
I think you should create a class names Response
public class Response{
private Long expense_categories_id;
private Double Total_withdrawal_Amount;
private String category_code_in_bank_stats;
private String category_name;
//getters and setters for all attributes
}
List<Response> fillCategorizedExpenses(){
List<Response> response_List = new ArrayList<>();
Response response = null;
Object[][] // fill each object with by accessing their index from
//this array.
for() //iterate the object array. {
response = new Response();
response.setExpense_categories_id(value); // set all attributes.
....
....
....
response_List.add(response);
}
return response_List; //this will print as you need in your project.
}
Thank You :) Hope this might help you out.
I just want to explain following scenario.
I have Registration table for employee
It has one field like BranchAddress, and I have using table Branch for that with ManyToOne mapping.
#Entity
#Table(name = "temp_reg")
public class TemporaryRegistrationDTO {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int ID;
#Column(name = "first_name")
private String firstName;
#Column(name = "last_name")
private String lastName;
#ManyToOne(cascade=CascadeType.ALL)
private BranchDTO companyBranch;
public BranchDTO getCompanyBranch() {
return companyBranch;
}
public void setCompanyBranch(BranchDTO companyBranch) {
this.companyBranch = companyBranch;
}
public int getID() {
return ID;
}
public void setID(int iD) {
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;
}
}
#Entity
#Table(name = "company_branch")
public class BranchDTO {
#Id
#GeneratedValue ( strategy = GenerationType.AUTO)
private int branchID;
public int getBranchID() {
return branchID;
}
public void setBranchID(int branchID) {
this.branchID = branchID;
}
#ManyToOne(cascade=CascadeType.ALL)
private CountriesDTO country;
#ManyToOne(cascade=CascadeType.ALL)
private StatesDTO state;
public CountriesDTO getCountry() {
return country;
}
public void setCountry(CountriesDTO country) {
this.country = country;
}
public StatesDTO getState() {
return state;
}
public void setState(StatesDTO state) {
this.state = state;
}
}
#Entity
#Table(name = "company_countries")
public class CountriesDTO {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private int id;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
private String countryCode;
public String getCountryCode() {
return countryCode;
}
public void setCountryCode(String countryCode) {
this.countryCode = countryCode;
}
private String countryName;
public String getCountryName() {
return countryName;
}
public void setCountryName(String countryName) {
this.countryName = countryName;
}
}
#Entity
#Table(name = "company_states")
public class StatesDTO {
#Id
#GeneratedValue ( strategy = GenerationType.AUTO)
private int state_id;
private String state;
private String stateCode;
public String getState() {
return state;
}
public void setState(String state) {
this.state = state;
}
public String getStateCode() {
return stateCode;
}
public void setStateCode(String stateCode) {
this.stateCode = stateCode;
}
#Override
public String toString() {
return "StatesDTO [statesID=" + state_id + ", state=" + state + ", stateCode=" + stateCode + "]";
}
public int getState_id() {
return state_id;
}
public void setState_id(int state_id) {
this.state_id = state_id;
}
}
Now, What I want is that, whenever their is request for registration, Firstly I am checking if Branch Address is available in the Branch table. If it contains an entry already, then it will retrieve Branch row and stooping from same data to Branch Table
Now, to check for BranchDTO, I have created method in Branch Repository class.
#Query("from BranchDTO where country = :country and state = :state")
public BranchDTO existsEntry(#org.springframework.data.repository.query.Param("country") CountriesDTO country,#org.springframework.data.repository.query.Param("state") StatesDTO state);
But It reflects me following error,
object references an unsaved transient instance - save the transient instance before flushing: com.example.demo.pojo.CountriesDTO
Thank you guys
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!
I have hibernate #OneToMany mapping I am getting the mentioned error. Does not understand the reason. As getters and setters are public
Below are the entities
#Entity
#Table(name="USER_DETAILS")
public class User implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
#Column(name="USER_ID")
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
#Column(name="USER_FIRSTNAME",nullable=false, length=50)
private String userFirstName;
#Column(name="USER_LASTNAME",nullable=false, length=50)
private String userLastName;
#Column(name="USER_MIDDLENAME",length = 30)
private String userMiddleName;
#Column(name="USER_AGE")
private int userAge;
#Column(name="USER_SEX")
private String userSex;
#OneToMany(cascade=CascadeType.ALL, mappedBy="userAddress", targetEntity=Address.class)
private Set<Address> address = new HashSet<Address>();
public String getUserFirstName() {
return userFirstName;
}
public void setUserFirstName(String userFirstName) {
this.userFirstName = userFirstName;
}
public String getUserLastName() {
return userLastName;
}
public void setUserLastName(String userLastName) {
this.userLastName = userLastName;
}
public String getUserMiddleName() {
return userMiddleName;
}
public void setUserMiddleName(String userMiddleName) {
this.userMiddleName = userMiddleName;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public int getUserAge() {
return userAge;
}
public void setUserAge(int userAge) {
this.userAge = userAge;
}
public String getUserSex() {
return userSex;
}
public void setUserSex(String userSex) {
this.userSex = userSex;
}
public Set<Address> getAddress() {
return address;
}
public void setAddress(Set<Address> address) {
this.address = address;
}
}
#Entity
#Table(name = "ADDRESS")
public class Address implements Serializable {
/**
*
*/
private static final long serialVersionUID = 1L;
#Id
#Column(name = "ADDRESS_ID")
#GeneratedValue(strategy=GenerationType.AUTO)
private int id;
#Column(name = "ZIP_CODE")
private String zipCode;
#Column(name="ADDRESS_USER_ID", insertable=false, updatable=false)
private Long addressUserID;
#Column(name = "ADDRESS_SEC")
private String addressSec;
#Column(name = "STREET")
private String street;
#Column(name = "CITY")
private String city;
#Column(name = "COUNTRY")
private String country;
#ManyToOne(cascade=CascadeType.ALL, targetEntity=User.class)
#JoinColumn(name="ADDRESS_USER_ID")
private Set<User> userAddress = new HashSet<User>();
public Long getAddressUserID() {
return addressUserID;
}
public void setAddressUserID(Long addressUserID) {
this.addressUserID = addressUserID;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getZipCode() {
return zipCode;
}
public void setZipCode(String zipCode) {
this.zipCode = zipCode;
}
public Set<User> getUserAddress() {
return userAddress;
}
public void setUserAddress(Set<User> userAddress) {
this.userAddress = userAddress;
}
public String getStreet() {
return street;
}
public void setStreet(String street) {
this.street = street;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getAddressSec() {
return addressSec;
}
public void setAddressSec(String addressSec) {
this.addressSec = addressSec;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
Part of Stack Trace are:
Exception in thread "main" org.hibernate.PropertyAccessException: could not get a field value by reflection getter of com.java.hibernate.practise.User.id at... org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:62)
Caused by: java.lang.IllegalArgumentException: Can not set int field com.java.hibernate.practise.User.id to java.util.HashSet...
I am generating the schema using hibernate.hbm2ddl.auto= cerate-drop
Please guide on this.
Generally when we use 1..n bidirectional entity mapping, the owning side which is in general, the many side, should have only a single instance reference to the one side object (not a collection - that would be many to many), and the join column to use is the primary key from the on side class. We don't need to explicitly use the FK column in the many side like you are.
So if this is your relationship User [1]..[N] Address, then you should have something more like
public class User {
...
#OneToMany(mappedBy = "user", cascade=CascadeType.ALL)
private Set<Address> addresses;
}
public class Address {
// private Long addressUserID; // Don't need this property. We get it below
...
#ManyToOne
#JoinColumn(name = "USER_ID")
private User user;
}