hibernate & spring, invalid identifier - spring

I have stuck on dealing with DB by using hibernate orm in spring mvc environment.
I have some tables; but I'm not gonna tell you my tables(If you want, I will edit this post)
The problem is that when hibernate runs, it generates sql - I can see the sql by configuring "hbm2_ddl auto" - but the sql has invalid identifier.
select newsreplie0_.news_article# as news6_3_4_, newsreplie0_.reply# as reply1_4_,
newsreplie0_.reply# as reply1_4_3_, newsreplie0_.account_account# as account5_4_3_,
newsreplie0_.content as content4_3_, newsreplie0_.dt as dt4_3_,
newsreplie0_.news_article# as news6_4_3_, newsreplie0_.reply_at as reply4_4_3_,
account1_.account# as account1_0_0_, account1_.email as email0_0_,
account1_.passwd as passwd0_0_, accountpro2_.account# as account1_1_1_,
accountpro2_.nickname as nickname1_1_, accountsec3_.account# as account1_2_2_,
accountsec3_.activate_key as activate2_2_2_, accountsec3_.activated as activated2_2_,
accountsec3_.enabled as enabled2_2_, accountsec3_.login_failed as login5_2_2_
from news_reply newsreplie0_
left outer join
cookingstep.account account1_ on newsreplie0_.account_account#=account1_.account#
left outer join
cookingstep.account_profile accountpro2_ on account1_.account#=accountpro2_.account#
left outer join
cookingstep.account_security accountsec3_ on account1_.account#=accountsec3_.account#
where newsreplie0_.news_article#=9
{FAILED after 4 msec}
The above statement is a sql generated by hibernate. And the error is:
java.sql.SQLSyntaxErrorException:
ORA-00904: "NEWSREPLIE0_"."ACCOUNT_ACCOUNT#": Invalid Identifier
In that exception message, there is a column called "ACCOUNT_ACCOUNT#".
It should be just "ACCOUNT#", not following "ACCOUNT_".
So, how to remove the word ?
EDIT:
Thank you all for your reply. I have asked similar question before.
And I checked out that article, it seems the problem was #JoinColumn annotation missing. Now it works out.
Here is my Entities.
Account.java for user information
package com.musicovery12.cookingstep.persistence.model;
import java.io.Serializable;
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.GenerationType;
import javax.persistence.Id;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.persistence.UniqueConstraint;
#Entity
#Table(name="account", catalog="cookingstep", uniqueConstraints= {
#UniqueConstraint(columnNames="email")
})
public class Account implements Serializable{
private static final long serialVersionUID = 1L;
private int accountId;
private String email;
private String password;
private Set<UserRole> userRoles = new HashSet<UserRole>(0);
private AccountProfile profile;
private AccountSecurity security;
private Set<News> newsList;
private Set<NewsReply> newsReplyList;
public Account() {}
#Id
#GeneratedValue(strategy=GenerationType.SEQUENCE, generator="seq_account")
#SequenceGenerator(name="seq_account", sequenceName="seq_account", allocationSize=1)
#Column(name="account#", unique=true, nullable=false)
public int getAccountId() {
return accountId;
}
public void setAccountId(int accountId) {
this.accountId = accountId;
}
#Column(name="email", unique=true, nullable=false)
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
#Column(name="passwd", nullable=false)
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
#OneToMany(mappedBy="pk.account", fetch=FetchType.EAGER, cascade=CascadeType.ALL)
public Set<UserRole> getUserRoles() {
return userRoles;
}
public void setUserRoles(Set<UserRole> userRoles) {
this.userRoles = userRoles;
}
#OneToOne(mappedBy="account", fetch=FetchType.EAGER, cascade=CascadeType.ALL)
public AccountProfile getProfile() {
return profile;
}
public void setProfile(AccountProfile profile) {
this.profile = profile;
}
#OneToOne(mappedBy="account", fetch=FetchType.EAGER, cascade=CascadeType.ALL)
public AccountSecurity getSecurity() {
return security;
}
public void setSecurity(AccountSecurity security) {
this.security = security;
}
#OneToMany(mappedBy="account", fetch=FetchType.LAZY, cascade=CascadeType.ALL)
public Set<News> getNewsList() {
return newsList;
}
public void setNewsList(Set<News> newsList) {
this.newsList = newsList;
}
#OneToMany(mappedBy="account", fetch=FetchType.LAZY, cascade=CascadeType.ALL)
public Set<NewsReply> getNewsReplyList() {
return newsReplyList;
}
public void setNewsReplyList(Set<NewsReply> newsReplyList) {
this.newsReplyList = newsReplyList;
}
}
and NewsReply.java for news community article's reply list.
package com.musicovery12.cookingstep.persistence.model;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
#Entity
#Table(name="news_reply")
public class NewsReply {
private int replyId;
private News news;
private Date date;
private String content;
private Account account;
private int replyAt;
#Id
#GeneratedValue(strategy=GenerationType.SEQUENCE, generator="gen_seq")
#SequenceGenerator(name="gen_seq", sequenceName="gen_seq", allocationSize=1)
#Column(name="reply#", unique=true, nullable=false)
public int getReplyId() {
return replyId;
}
public void setReplyId(int replyId) {
this.replyId = replyId;
}
#Temporal(TemporalType.DATE)
#Column(name="dt")
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
#Column(name="content", nullable=false)
public String getContent() {
return content;
}
public void setContent(String content) {
this.content = content;
}
#Column(name="reply_at")
public int getReplyAt() {
return replyAt;
}
public void setReplyAt(int replyAt) {
this.replyAt = replyAt;
}
#ManyToOne
public News getNews() {
return news;
}
public void setNews(News news) {
this.news = news;
}
#ManyToOne
#JoinColumn(name="account#", referencedColumnName="account#")
public Account getAccount() {
return account;
}
public void setAccount(Account account) {
this.account = account;
}
}
in NewsReply.java, there was no JoinColumn annotation to point foreing key column name.
Thank you.

#ManyToOne
#JoinColumn(name="account#", referencedColumnName="account#")
public Account getAccount() {
return account;
}
This is the problem, you tell hibernate the table has a technical name of account# what is not allowed.
What you can do is to force hibernate to use that # by defining
#ManyToOne
#JoinColumn(name="`account#`", referencedColumnName="`account#`")
public Account getAccount() {
return account;
}
But this is bad style and you have to do it on the owning-side too.
Why dont you let hibernate create the entitys for you? He is much more precisly!

Related

#RequestBody getting parameters values null

I am developing a rest API, but it provides null with #RequestBody. I went through the answers on this platform but it didn't solve my problem. I am unable to find where the problem is. I want to verify the user by validating userEmail and userPassword but didn't succeed.
#RestController
#RequestMapping("user")
public class UserController {
#Autowired
private IUserService userService;
#GetMapping("validateUser")
public ResponseEntity<Boolean> validateUser(#RequestBody Users user) {
boolean validateStatus = userService.validateUser(user.getUserEmail(), user.getUserPassword());
if (validateStatus)
return new ResponseEntity<Boolean>(validateStatus, HttpStatus.OK);
else
return new ResponseEntity<Boolean>(validateStatus, HttpStatus.UNAUTHORIZED);
}
and pojo class as this:
package com.ravionics.user.entity;
import java.io.Serializable;
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="users")
public class Users implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
#Column(name="user_Id")
private int userId;
#Column(name="user_Name")
private String userName;
#Column(name="user_Email")
private String userEmail;
#Column(name="user_Password")
private String userPassword;
public int getUserId() {
return userId;
}
public void setUserId(int userId) {
userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
userName = userName;
}
public String getUserEmail() {
return userEmail;
}
public void setUserEmail(String userEmail) {
userEmail = userEmail;
}
public String getUserPassword() {
return userPassword;
}
public void setUserPassword(String userPassword) {
userPassword = userPassword;
}
}

created_by is always set to null in the database and Version does not work properly

I am trying to implement one entity to see how Auditing works in spring. I have tow issues here:
First issue is that "created_by" field is always set to null in the database, although I have created a bean of AuditAware and set it to myself.
Second issue is that whenever I want to insert something into the country table, it forces me to provide the version number. It is not the behaviour I want as I expect version gets picked up by the spring itself
I appreciate if someone could help me to tackle these two issues.
AbstractMethodEntity is as follow:
package com.xx.xxx.hotel;
import org.springframework.data.annotation.CreatedBy;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedBy;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;
import javax.persistence.*;
import java.time.LocalDateTime;
#MappedSuperclass
#EntityListeners({ AuditingEntityListener.class })
public abstract class AbstractModelEntity<U> {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
private long id;
#Column(name = "created_by")
#CreatedBy
private U CreatedBy;
#Column(name = "create_date")
#CreatedDate
private LocalDateTime createdDate;
#Version
private long version;
#Column(name = "modified_by")
#LastModifiedBy
private U lastModifiedBy;
#Column(name = "modified_date")
#LastModifiedDate
private LocalDateTime lastModifiedDate;
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public long getVersion() {
return version;
}
public void setVersion(long version) {
this.version = version;
}
public U getCreatedBy() {
return CreatedBy;
}
public void setCreatedBy(U createdBy) {
CreatedBy = createdBy;
}
public LocalDateTime getCreatedDate() {
return createdDate;
}
public void setCreatedDate(LocalDateTime createdDate) {
this.createdDate = createdDate;
}
public U getLastModifiedBy() {
return lastModifiedBy;
}
public void setLastModifiedBy(U lastModifiedBy) {
this.lastModifiedBy = lastModifiedBy;
}
public LocalDateTime getLastModifiedDate() {
return lastModifiedDate;
}
public void setLastModifiedDate(LocalDateTime lastModifiedDate) {
this.lastModifiedDate = lastModifiedDate;
}
}
The Country entity:
package com.xx.xxx.hotel.service.country;
import com.miraftabi.hossein.hotel.AbstractModelEntity;
import org.hibernate.envers.AuditOverride;
import org.hibernate.envers.Audited;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table;
#Entity
#Audited
#AuditOverride(forClass = AbstractModelEntity.class, isAudited = true)
#Table(name = "country")
public class CountryEntity extends AbstractModelEntity<String> {
#Column(name = "name", nullable = false)
private String name;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
AuditAwareImpl file:
package com.xx.xxx.hotel.service;
import org.springframework.data.domain.AuditorAware;
import java.util.Optional;
public class AuditorAwareImpl implements AuditorAware<String> {
#Override
public Optional<String> getCurrentAuditor() {
return Optional.of("Hossein");
}
}
AuditConfiguraiton file:
package com.xx.xxx.hotel.config;
import com.xx.xxx.hotel.service.AuditorAwareImpl;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.domain.AuditorAware;
import org.springframework.data.jpa.repository.config.EnableJpaAuditing;
#Configuration
#EnableJpaAuditing(auditorAwareRef = "auditorAware")
public class AuditConfiguration {
#Bean
public AuditorAware<String> auditorAware() {
return new AuditorAwareImpl();
}
}
RepositoryConfiguration file:
package com.xx.xxx.hotel.config;
import org.springframework.context.annotation.Configuration;
import org.springframework.data.envers.repository.support.EnversRevisionRepositoryFactoryBean;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
#Configuration
#EnableJpaRepositories(repositoryFactoryBeanClass = EnversRevisionRepositoryFactoryBean.class)
public class RepositoryConfiguration {
}
CountryRevisionRepository file:
package com.xx.xxx.hotel.service.country;
import org.springframework.data.repository.history.RevisionRepository;
import org.springframework.stereotype.Repository;
#Repository
public interface CountryRevisionRepository extends RevisionRepository<CountryEntity, Long, Integer> {
}
Application.properties:
spring.jpa.hibernate.ddl-auto=update
spring.datasource.url=jdbc:mysql://localhost:3306/hotel
spring.datasource.username=${DATABASE_USERNAME}
spring.datasource.password=${DATABASE_PASSWORD}
spring.jpa.properties.hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
spring.jpa.open-in-view=false
spring.jpa.properties.hibernate.jdbc.lob.non_contextual_creation=true

Hibernate Envers unable to extend DefaultRevisionEntity

I'm trying to extend the DefaultRevisionEntity in order to add a username to the current revision entity. However, instead of simply adding the new field, it's creating a completely new table. Code is as follows
AuditRevisionEntity
package com.example.demo;
import org.hibernate.envers.DefaultRevisionEntity;
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
#Entity
#EntityListeners(AuditRevisionListener.class)
public class AuditRevisionEntity extends DefaultRevisionEntity {
private String user;
public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
}
AuditRevisionListener
package com.example.demo;
import org.hibernate.envers.RevisionListener;
public class AuditRevisionListener implements RevisionListener {
#Override
public void newRevision(Object revisionEntity) {
AuditRevisionEntity rev = (AuditRevisionEntity) revisionEntity;
rev.setUser("MYUSER");
}
}
User
package com.example.demo;
import org.hibernate.envers.Audited;
import javax.persistence.*;
import javax.validation.constraints.NotBlank;
import javax.validation.constraints.Size;
#Entity
#Audited
#Table(name = "users")
public class User {
#Id
#GeneratedValue(strategy = GenerationType.IDENTITY)
#Column(name = "id")
private Long id;
#NotBlank()
#Size(min = 1, max = 100)
#Column(name = "email")
private String email;
#NotBlank()
#Size(min = 1, max = 100)
#Column(name = "password")
private String password;
}
Resulting in
Your custom RevisionEntity is missing the required #RevisionEntity annotation.
package com.example.demo;
import org.hibernate.envers.DefaultRevisionEntity;
import javax.persistence.Entity;
import javax.persistence.EntityListeners;
#Entity
#RevisionEntity( AuditRevisionListener.class )
public class AuditRevisionEntity extends DefaultRevisionEntity {
private String user;
public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
}
More info and a code sample can be found in the Envers documentation
I believe I have fixed this with adding the table to the custom entity pointing to the main revinfo table
#Entity
#RevisionEntity( AuditRevisionListener.class )
#Table(name = "revinfo")
public class AuditRevisionEntity extends DefaultRevisionEntity {
private String user;
public String getUser() {
return user;
}
public void setUser(String user) {
this.user = user;
}
}

Hibernate Query to join two table using Jparepository

Hi all i have a small issue with joining two tables using jparepository using #query but i am getting error. please help me with this.
UserAddress.java
package com.surya_spring.example.Model;
import java.io.Serializable;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.Table;
import javax.validation.constraints.NotNull;
#Entity
#Table(name = "user_address")
//#JsonIgnoreProperties({"hibernateLazyInitializer", "handler"})
public class UserAddress implements Serializable {
/**
*
*/
private static final long serialVersionUID = -3570928575182329616L;
/*#ManyToMany(cascade = {CascadeType.ALL},fetch=FetchType.EAGER,mappedBy = "userAddress",targetEntity=UserData.class)*/
#ManyToOne(cascade=CascadeType.ALL)
#JoinColumn(name="user_id")
private UserData userdata;
#Id
#Column(name = "addr_id")
#GeneratedValue(strategy = GenerationType.AUTO)
private Long addrid;
#Column(name = "dr_no")
#NotNull
private String doorNo;
#Column(name = "strt_name")
#NotNull
private String streetName;
#Column(name = "city")
#NotNull
private String city;
#Column(name = "country")
#NotNull
private String country;
/*#OneToOne(cascade=CascadeType.ALL)
#Column(name="user_id")*/
public UserData getUserdata() {
return userdata;
}
public void setUserdata(UserData userdata) {
this.userdata = userdata;
}
public Long getAddrid() {
return addrid;
}
public void setAddrid(Long addrid) {
this.addrid = addrid;
}
public String getDoorNo() {
return doorNo;
}
public void setDoorNo(String doorNo) {
this.doorNo = doorNo;
}
public String getStreetName() {
return streetName;
}
public void setStreetName(String streetName) {
this.streetName = streetName;
}
public String getCity() {
return city;
}
public void setCity(String city) {
this.city = city;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
}
UserData.java
package com.surya_spring.example.Model;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import lombok.NonNull;
#Entity
#Table(name = "user_data")
public class UserData implements Serializable{
/**
* Serialization ID
*/
private static final long serialVersionUID = 8133309714576433031L;
/*#ManyToMany(targetEntity=UserAddress.class ,cascade= {CascadeType.ALL },fetch=FetchType.EAGER)
#JoinTable(name="userdata",joinColumns= #JoinColumn(name="userid"),inverseJoinColumns = #JoinColumn(name="userid"))
*/
#Id
#Column(name = "user_id")
#GeneratedValue(strategy = GenerationType.AUTO)
private Long userId;
#Column(name = "user_name")
#NonNull
private String userName;
#Column(name = "user_email")
#NonNull
private String userEmail;
public Long getUserId() {
return userId;
}
public void setUserId(Long userId) {
this.userId = userId;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public String getUserEmail() {
return userEmail;
}
public void setUserEmail(String userEmail) {
this.userEmail = userEmail;
}
}
Repository:
package com.surya_spring.example.Repository;
import java.util.List;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
import com.surya_spring.example.Model.UserData;
public interface UserDataRepository extends JpaRepository<UserData, Long>{
#Query(" FROM UserData where userId= :id")
public List<UserData> findBySearchTerm(#Param("id") Long id);
}
any one let me know the query to join this both the table to get city name from user_address where user_id=? joining user_data table
If you want to get the city for a user you can do:
#Query("SELECT ua.city FROM UserAddress ua WHERE ua.userdata.userId = ?1")
String findCityByUserId(Long userId);
Note that your entity names are used (like in your java classes) and not the table names in database! You do not have to do the join by yourself as you can use the properties of your domain models to access the related data

404 Error in Associate Mapping

I am developing shopping cart web app which have completed up to display product to add cart. I am trying to map every customer (One To One) to cart Entity, cart entity (one to one) to cart item Entity, and cart item entity (Many to One) to Product entity. But I got a 404 error.
Please check my code below.
Mapping plan:
Customer-----one to one------>Cart----one to one---->Cart Item----Many to one--->Product
Customer Entity
package com.model;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToOne;
import javax.validation.constraints.NotNull;
import org.hibernate.validator.constraints.NotEmpty;
#Entity
public class Customer {
#Id #GeneratedValue(strategy=GenerationType.AUTO)
#Column(name="Cid")
private int customerId;
#Column(name="password")
#NotEmpty(message="Name is mandatory")
private String password;
#Column(name="Email")
#NotEmpty(message="Name is mandatory")
private String email;
#NotEmpty(message="First Name is mandatory")
#Column(name="firstname")
private String firstName;
#NotEmpty(message="Last Name is mandatory")
#Column(name="lastname")
private String lastName;
#Column(name="Mobile")
#NotEmpty(message="Mobile is mandatory")
private String mobile;
#ManyToOne(cascade=CascadeType.ALL)
#JoinColumn(name="address_id")
private Address delAdderss;
private boolean enabled;
private String role;
#OneToOne(cascade=CascadeType.ALL)
#JoinColumn(name="cart_id")
private Cart cart;
public Cart getCart() {
return cart;
}
public void setCart(Cart cart) {
this.cart = cart;
}
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 getMobile() {
return mobile;
}
public void setMobile(String mobile) {
this.mobile = mobile;
}
public int getCustomerId() {
return customerId;
}
public void setCustomerId(int name) {
this.customerId = name;
}
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 boolean isEnabled() {
return enabled;
}
public void setEnabled(boolean enabled) {
this.enabled = enabled;
}
public String getRole() {
return role;
}
public void setRole(String role) {
this.role = role;
}
public Address getDelAdderss() {
return delAdderss;
}
public void setDelAdderss(Address delAdderss) {
this.delAdderss = delAdderss;
}
}
Cart Entity
package com.model;
import javax.persistence.CascadeType;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.OneToOne;
#Entity
public class Cart {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int cart_id;
#Column
private double total;
#Column
#OneToOne(cascade=CascadeType.ALL)
#JoinColumn(name="item_id")
private CartItem cartItem;
public int getCart_id() {
return cart_id;
}
public void setCart_id(int cart_id) {
this.cart_id = cart_id;
}
public double getTotal() {
return total;
}
public void setTotal(double total) {
this.total = total;
}
public CartItem getCartItem() {
return cartItem;
}
public void setCartItem(CartItem cartItem) {
this.cartItem = cartItem;
}
}
Cart Item Entity
package com.model;
import java.util.List;
import javax.persistence.CascadeType;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.ManyToOne;
import javax.persistence.OneToMany;
import javax.persistence.OneToOne;
#Entity
public class CartItem {
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
private int item_id;
#ManyToOne(cascade=CascadeType.ALL)
#JoinColumn(name="id")
private List<Product> product;
public int getItem_id() {
return item_id;
}
public void setItem_id(int item_id) {
this.item_id = item_id;
}
public List<Product> getProduct() {
return product;
}
public void setProduct(List<Product> product) {
this.product = product;
}
}
Product Entity
package com.model;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Transient;
import org.springframework.web.multipart.MultipartFile;
#Entity
public class Product {
#Id #GeneratedValue(strategy=GenerationType.AUTO)
private int id;
#Column
private String product_Name;
#Column
private String descripction;
#Column
private int price;
#Column
private Date mfg_Date;
#Transient
private MultipartFile image;
public MultipartFile getImage() {
return image;
}
public void setImage(MultipartFile image) {
this.image = image;
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getProduct_Name() {
return product_Name;
}
public void setProduct_Name(String product_Name) {
this.product_Name = product_Name;
}
public String getDescripction() {
return descripction;
}
public void setDescripction(String descripction) {
this.descripction = descripction;
}
public int getPrice() {
return price;
}
public void setPrice(int price) {
this.price = price;
}
public Date getMfg_Date() {
return mfg_Date;
}
public void setMfg_Date(Date mfg_Date) {
this.mfg_Date = mfg_Date;
}
}
Why are you using cart item entity, According to me it should be Customer one on one with Cart, And a Cart as one to many with Products. I think there is no need for cart items table/entity.

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