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org.springframework.orm.jpa.JpaSystemException: Error accessing field by reflection for persistent property

I am using Spring Boot (v 2.4.0) with Hibernate 5.4.24 and, when trying to get some information from my database, I keep getting this error message:
org.springframework.orm.jpa.JpaSystemException: Error accessing field [private int es.uc3m.orders.model.Shoppingcart.usID] by reflection for persistent property [es.uc3m.orders.model.Shoppingcart#usID] : 1; nested exception is org.hibernate.property.access.spi.PropertyAccessException: Error accessing field [private int es.uc3m.orders.model.Shoppingcart.usID] by reflection for persistent property [es.uc3m.orders.model.Shoppingcart#usID] : 1
It is kind of weird for me, because it only happens when I try to access the table Shoppingcart, since I can get informatin from the rest of the tables.
I also used the exact same entities with another project but, insetad of using Spring Boot, persistence was made with EntityManagers and it worked perfectly fine.
These are my entities:
Shoppingcart
#Entity
#NamedQuery(name="Shoppingcart.findAll", query="SELECT s FROM Shoppingcart s")
public class Shoppingcart implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private int scID;
private int usID;
//bi-directional many-to-many association to Product
#ManyToMany
#JoinTable(
name="sc_has_product"
, joinColumns={
#JoinColumn(name="scID")
}
, inverseJoinColumns={
#JoinColumn(name="productID")
}
)
private List<Product> products;
//bi-directional one-to-one association to User
#OneToOne(mappedBy="shoppingcart")
private User user;
public Shoppingcart() {
}
public int getScID() {
return this.scID;
}
public void setScID(int scID) {
this.scID = scID;
}
public int getusID() {
return this.usID;
}
public void setusID(int usID) {
this.usID = usID;
}
public List<Product> getProducts() {
return this.products;
}
public void setProducts(List<Product> products) {
this.products = products;
}
public User getUser() {
return this.user;
}
public void setUser(User user) {
this.user = user;
}
public boolean isNull() {
return getProducts().isEmpty();
}
User
#Entity
#Table(name="users")
#NamedQuery(name="User.findAll", query="SELECT u FROM User u")
public class User implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private int id;
private String address;
#Column(name="card_n")
private Long cardN;
private String city;
private String country;
private int cvv;
private String email;
private String exp;
private String name;
private String pass;
private String surname1;
private String surname2;
private String typeOfUser;
#Column(name="zip_code")
private int zipCode;
//bi-directional many-to-one association to Order
#OneToMany(mappedBy="user")
private List<Orders> orders;
//bi-directional many-to-one association to Product
#OneToMany(mappedBy="user")
private List<Product> products;
//bi-directional one-to-one association to Shoppingcart
#OneToOne(cascade=CascadeType.REMOVE)
#JoinColumn(name="ID", referencedColumnName="usID", insertable=false, updatable=false)
private Shoppingcart shoppingcart;
public User() {
}
public int getId() {
return this.id;
}
public void setId(int id) {
this.id = id;
}
public String getAddress() {
return this.address;
}
public void setAddress(String address) {
this.address = address;
}
public Long getCardN() {
return this.cardN;
}
public void setCardN(Long cardN) {
this.cardN = cardN;
}
public String getCity() {
return this.city;
}
public void setCity(String city) {
this.city = city;
}
public String getCountry() {
return this.country;
}
public void setCountry(String country) {
this.country = country;
}
public int getCvv() {
return this.cvv;
}
public void setCvv(int cvv) {
this.cvv = cvv;
}
public String getEmail() {
return this.email;
}
public void setEmail(String email) {
this.email = email;
}
public String getExp() {
return this.exp;
}
public void setExp(String exp) {
this.exp = exp;
}
public String getName() {
return this.name;
}
public void setName(String name) {
this.name = name;
}
public String getPass() {
return this.pass;
}
public void setPass(String pass) {
this.pass = pass;
}
public String getSurname1() {
return this.surname1;
}
public void setSurname1(String surname1) {
this.surname1 = surname1;
}
public String getSurname2() {
return this.surname2;
}
public void setSurname2(String surname2) {
this.surname2 = surname2;
}
public int getZipCode() {
return this.zipCode;
}
public void setZipCode(int zipCode) {
this.zipCode = zipCode;
}
public List<Orders> getOrders() {
return this.orders;
}
public void setOrders(List<Orders> orders) {
this.orders = orders;
}
public Orders addOrder(Orders order) {
getOrders().add(order);
order.setUser(this);
return order;
}
public Orders removeOrder(Orders order) {
getOrders().remove(order);
order.setUser(null);
return order;
}
public List<Product> getProducts() {
return this.products;
}
public void setProducts(List<Product> products) {
this.products = products;
}
public Product addProduct(Product product) {
getProducts().add(product);
product.setUser(this);
return product;
}
public Product removeProduct(Product product) {
getProducts().remove(product);
product.setUser(null);
return product;
}
public Shoppingcart getShoppingcart() {
return this.shoppingcart;
}
public void setShoppingcart(Shoppingcart shoppingcart) {
this.shoppingcart = shoppingcart;
}
public String getTypeOfUser() {
return typeOfUser;
}
public void setTypeOfUser(String typeOfUser) {
this.typeOfUser = typeOfUser;
}
}
This is the ShoppingcartDAO class:
public interface ShoppingCartDAO extends CrudRepository<Shoppingcart, Integer> {
#Query("SELECT s FROM Shoppingcart s JOIN User u ON u.id = s.usID AND u.id LIKE :id")
Shoppingcart findByUser(#Param("id") int id);
#Query("SELECT s FROM Shoppingcart s")
List<Shoppingcart> findAllShoppingCart();
}
And, finally, this is my ShoppingcartController class:
#RestController
#CrossOrigin
#EnableAutoConfiguration
public class ShoppingCartController {
#Autowired
ShoppingCartDAO scDAO;
#RequestMapping(value = "sc", method = RequestMethod.POST, produces = "application/json")
public ResponseEntity<?> assignShoppingCart(#RequestBody(required = true) Shoppingcart sc) {
try {
scDAO.save(sc);
return new ResponseEntity<Void>(HttpStatus.CREATED);
} catch(Exception e) {
return new ResponseEntity<Void>(HttpStatus.BAD_REQUEST);
}
}
#RequestMapping(value = "sc", method = RequestMethod.GET, produces = "application/json")
public ResponseEntity<?> getEveryShoppingCart() {
try {
List<Shoppingcart> sc = scDAO.findAllShoppingCart();
return new ResponseEntity<List<Shoppingcart>>(sc, (sc != null) ? HttpStatus.OK : HttpStatus.NOT_FOUND);
} catch(Exception e) {
System.out.println(e);
return new ResponseEntity<Void>(HttpStatus.BAD_REQUEST);
}
}
}
I am really going nuts as I can´t figure out what is going on with my code, so thank you in advance if you help me.

I finally fixed it. For those of you who are wondering how, I deleted the relationships between tables that I had, ending with:
Shoppingcart:
#Entity
public class Shoppingcart implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private int scID;
#Column(name = "usID")
private Integer userID;
public Shoppingcart() {
}
public int getScID() {
return this.scID;
}
public void setScID(int scID) {
this.scID = scID;
}
public Integer getUserID() {
return userID;
}
public void setUserID(Integer userID) {
this.userID = userID;
}
Product:
#Entity
public class Product implements Serializable {
private static final long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.IDENTITY)
private int productID;
private String category;
private String color;
private String description;
private String estadoProducto;
private String fecha;
private int orderID;
private String photo;
private double price;
private int seller;
private String sexo;
private String state = "Disponible";
private String talla;
private String title;
public Product() {
}
public int getProductID() {
return this.productID;
}
public void setProductID(int productID) {
this.productID = productID;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getColor() {
return this.color;
}
public void setColor(String color) {
this.color = color;
}
public String getDescription() {
return this.description;
}
public void setDescription(String description) {
this.description = description;
}
public String getEstadoProducto() {
return this.estadoProducto;
}
public void setEstadoProducto(String estadoProducto) {
this.estadoProducto = estadoProducto;
}
public String getFecha() {
return this.fecha;
}
public void setFecha(String fecha) {
this.fecha = fecha;
}
public String getPhoto() {
return this.photo;
}
public void setPhoto(String photo) {
this.photo = photo;
}
public double getPrice() {
return this.price;
}
public void setPrice(double price) {
this.price = price;
}
public String getSexo() {
return this.sexo;
}
public void setSexo(String sexo) {
this.sexo = sexo;
}
public String getState() {
return this.state;
}
public void setState(String state) {
this.state = state;
}
public String getTalla() {
return this.talla;
}
public void setTalla(String talla) {
this.talla = talla;
}
public String getTitle() {
return this.title;
}
public void setTitle(String title) {
this.title = title;
}
public int getOrderID() {
return orderID;
}
public void setOrderID(int orderID) {
this.orderID = orderID;
}
public int getSeller() {
return seller;
}
public void setSeller(int seller) {
this.seller = seller;
}
With this, everything worked fine, but don't ask me why, because I don't know it.

Your Getters/Setters are wrongly implemented.
Like :
Actual :
public int getusID() {
return this.usID;
}
Expected :
public int getUsID() {
return this.usID;
}
Same with setter

Update() method doesn't work in Play Framework with h2 database

I am trying to update a list of a company class I created in Play Framework.
It all works until i get to the company.update(), which doesn't save to the database as it should.
Here is my Company class:
package models;
import io.ebean.Finder;
import io.ebean.Model;
import javax.persistence.Entity;
import javax.persistence.Id;
#Entity
public class Company extends Model {
#Id
public Integer id;
public String code;
public String name;
public String adress;
public String fiscalCode;
public String bankAccount;
public static Finder<Integer, Company> find = new Finder<>(Company.class);
public String getFiscalCode() {
return fiscalCode;
}
public void setFiscalCode(String fiscalCode) {
this.fiscalCode = fiscalCode;
}
public String getBankAccount() {
return bankAccount;
}
public void setBankAccount(String bankAccount) {
this.bankAccount = bankAccount;
}
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getCode() {
return code;
}
public void setCode(String code) {
this.code = code;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getAdress() {
return adress;
}
public void setAdress(String adress) {
this.adress = adress;
}
}
And here are my update and edit methods:
public Result editCompany(Integer id){
Company company = Company.find.byId(id);
if(company == null)
{
return notFound("Company not found");
}
Form<Company> companyForm = formFactory.form(Company.class).fill(company);
return ok(editCompany.render(companyForm));
}
public Result updateCompany(){
Form<Company> companyForm = formFactory.form(Company.class).bindFromRequest();
if(companyForm.hasErrors())
{
flash("danger","Please Correct the Form Below");
return badRequest(editCompany.render(companyForm));
}
Company newcompany = companyForm.get();
Company company = Company.find.byId(newcompany.id);
if (company == null) {
flash("danger", "Book not found");
redirect(routes.CompanyController.indexCompanies());
}
company.code = newcompany.code;
company.name = newcompany.name;
company.adress = newcompany.adress;
company.fiscalCode = newcompany.fiscalCode;
company.bankAccount = newcompany.bankAccount;
company.update();
flash("success","Company Details Updated Successfully");
return redirect(routes.CompanyController.indexCompanies());
}
The new company entity has updated values, but they don't save in the database. I checked by printing to the console company.name.
I hope you can help me. Thank you!

I seem to have figured it out.
The problem goes away after using getters and setters and doing a recompile. Therefore,
company.code = newcompany.code;
company.name = newcompany.name;
company.adress = newcompany.adress;
company.fiscalCode = newcompany.fiscalCode;
company.bankAccount = newcompany.bankAccount;
becomes
company.setCode(newcompany.getCode());
company.setName(newcompany.getName());
company.setAdress(newcompany.getAdress());
company.setFiscalCode(newcompany.getFiscalCode());
company.setBankAccount(newcompany.getBankAccount());

#ElementCollection does not getting detached

My goal is to clone entity 'Product' with all its filters.
For example, I have an entity (getters and setters omitted for simplicity):
#Entity
public class Product {
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
#ElementCollection()
private List<Filter> filters = new ArrayList<Filter>();
}
And embeddable class:
#Embeddable
public class Filter {
#Column(length = 255, nullable = false)
private String name;
#Column(nullable = false)
private long variant = -1;
}
Now, if I do:
entityManager.detach(product);
product.setId(null);
productService.save(product);
I will get a copy of product entity but with filters from original product. In meanwhile original product will end up with no filters at all..
Thats how filter's table rows looks like:
Before:
product_id; name; variant
217; "f2"; 86
After:
product_id; name; variant
218; "f2"; 86
I tried detach each filter from the list but it gives me error.
How can I make it copy filters with an entity?
Edit: Added full Product and Filter code:
package com.serhiy1.model;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.*;
import org.hibernate.annotations.LazyCollection;
import org.hibernate.annotations.LazyCollectionOption;
import org.hibernate.search.annotations.Field;
import org.hibernate.search.annotations.Indexed;
import org.hibernate.search.annotations.SortableField;
import org.joda.time.DateTime;
import com.serhiy1.constraint.LocalePacker;
#Indexed
#Entity
#EntityListeners(ProductListener.class)
public class Product {
public static final int PRICE_PER_ONE = 0;
public static final int PRICE_PER_METER = 1;
#Id
#GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
private Long code;
private String name = "";
private String grouping = "";
#Field
#Column(columnDefinition="text")
private String title = "";
#Field
#Column(columnDefinition="text")
private String intro = "";
#Column(columnDefinition="text")
private String content = "";
#Field
#Column(columnDefinition="text")
private String contentHtml = "";
private String locale = "en";
private Long parentId = 0L;
private DateTime time;
private DateTime timeMod;
private Long balanceRequired = 0L;
private Integer index = 0;
#Field(name = "price_sort")
#SortableField(forField = "price_sort")
private Double price = 0.0;
private Integer pricePer;
#Transient
private long childrenCount = 0;
#Transient
private String image = "";
#Transient
private List<String> images = new ArrayList<String>();
#ManyToOne(targetEntity = User.class)
#JoinColumn(nullable = false, name = "user_id")
#LazyCollection(LazyCollectionOption.FALSE)
private User user;
#ManyToOne(targetEntity = Product.class)
#JoinColumn(nullable = true, name = "category_id")
#LazyCollection(LazyCollectionOption.FALSE)
private Product category;
#ElementCollection()
private List<Filter> filters = new ArrayList<Filter>();
#ElementCollection()
private List<Modifier> modifiers = new ArrayList<Modifier>();
public Product() {
}
#Transient
private String _title = "";
#Transient
private String _intro = "";
#Transient
private String _content = "";
#Transient
private String _contentHtml = "";
public void pack(String locale, List<String> locales) {
if(locale.contains("_")) return;
title = LocalePacker.repack(locale, _title, title, locales);
intro = LocalePacker.repack(locale, _intro, intro, locales);
content = LocalePacker.repack(locale, _content, content, locales);
contentHtml = LocalePacker.repack(locale, _contentHtml, contentHtml, locales);
}
public void unpack(String locale) {
_title = LocalePacker.unpackStr(locale, title).getOrDefault(locale, "");
_intro = LocalePacker.unpackStr(locale, intro).getOrDefault(locale, "");
_content = LocalePacker.unpackStr(locale, content).getOrDefault(locale, "");
_contentHtml = LocalePacker.unpackStr(locale, contentHtml).getOrDefault(locale, "");
}
public void copy(String landFrom, String landTo) {
title = LocalePacker.copyLang(title, landFrom, landTo);
intro = LocalePacker.copyLang(intro, landFrom, landTo);
content = LocalePacker.copyLang(content, landFrom, landTo);
contentHtml = LocalePacker.copyLang(contentHtml, landFrom, landTo);
}
public Modifier getModifier(String name) {
for(Modifier m: modifiers) {
if(m.getName().equals(name)) return m;
}
return null;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public long getCode() {
return code == null ? id : code;
}
public void setCode(long code) {
this.code = code;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGrouping() {
return grouping;
}
public void setGrouping(String grouping) {
this.grouping = grouping;
}
public String getTitle() {
return _title;
}
public void setTitle(String title) {
this._title = title;
}
public String getIntro() {
return _intro;
}
public void setIntro(String intro) {
this._intro = intro;
}
public String getContent() {
return _content;
}
public void setContent(String content) {
this._content = content;
}
public String getContentHtml() {
return _contentHtml;
}
public void setContentHtml(String contentHtml) {
this._contentHtml = contentHtml;
}
public String getLocale() {
return locale;
}
public void setLocale(String locale) {
this.locale = locale;
}
public long getParentId() {
return parentId;
}
public void setParentId(long parentId) {
this.parentId = parentId;
}
public DateTime getTime() {
return time;
}
public void setTime(DateTime time) {
this.time = time;
}
public DateTime getTimeMod() {
return timeMod;
}
public void setTimeMod(DateTime timeMod) {
this.timeMod = timeMod;
}
public long getBalanceRequired() {
return balanceRequired == null ? 0L : balanceRequired;
}
public void setBalanceRequired(long balanceRequired) {
this.balanceRequired = balanceRequired;
}
public Integer getIndex() {
//return index == null ? 1000 : index;
return index;
}
public void setIndex(Integer index) {
this.index = index;
}
public double getPrice() {
return price == null ? 0.0 : price;
}
public void setPrice(double price) {
this.price = price;
}
public int getPricePer() {
return pricePer == null ? PRICE_PER_METER : pricePer;
}
public void setPricePer(int pricePer) {
this.pricePer = pricePer;
}
public long getChildrenCount() {
return childrenCount;
}
public void setChildrenCount(long childrenCount) {
this.childrenCount = childrenCount;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
public List<String> getImages() {
return images;
}
public void setImages(List<String> images) {
this.images = images;
}
public User getUser() {
return user;
}
public void setUser(User user) {
this.user = user;
}
public Product getCategory() {
return category;
}
public void setCategory(Product category) {
this.category = category;
}
public List<Filter> getFilters() {
return filters;
}
public void setFilters(List<Filter> filters) {
this.filters = filters;
}
public List<Modifier> getModifiers() {
return modifiers;
}
public void setModifiers(List<Modifier> modifiers) {
this.modifiers = modifiers;
}
public boolean isCategory() { return price < 0; }
#Override
public String toString() {
return "Article{" +
"id=" + id +
'}';
}
}
..
package com.serhiy1.model;
import java.util.ArrayList;
import java.util.List;
import javax.persistence.Column;
import javax.persistence.Embeddable;
import javax.persistence.Transient;
#Embeddable
public class Filter {
#Column(length = 255, nullable = false)
private String name;
#Column(nullable = false)
private long variant = -1;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public long getVariant() {
return variant;
}
public void setVariant(long variant) {
this.variant = variant;
}
}

I made a mini project trying to replicate your issue.
It is a String Boot project with H2 database and JPA (Hibernate implementation).
On startup, Hibernate creates 2 tables:
create table product (
id bigint not null,
primary key (id)
)
and
create table product_filters (
product_id bigint not null,
name varchar(255) not null,
variant bigint not null
)
On product with filters creation, both tables get inserted:
insert
into
product
(id)
values
(1)
and
insert
into
product_filters
(product_id, name, variant)
values
(1, "f1", 1)
After:
entityManager.detach(product);
product.setId(null);
productService.save(product);
Hibernate issues:
delete
from
product_filters
where
product_id=1
which is normal, since filters is an ElementCollection therefore it is totally owned by the entity Product. On productService.save(product) Hibernate detects that filters collection is bound to another Product therefore deletes the old bound (from product_filter table) before creating a new one.
The only way to overcome the deletion is to recreate the collection:
List<Filter> filters = new ArrayList<Filter>();
filters.addAll(oldFilters);
product.setFilters(filters);
To sum up, here is the solution:
// To trigger the fetch
List<Filter> filters = new ArrayList<Filter>(product.getFilters());
entityManager.detach(product);
product.setId(null);
product.setFilters(filters);
productService.save(product);

hibernate session.persist(object) create more rows in database

Helo,
I have method
public void createContest(Contest c) {
session.beginTransaction();
session.persist(c);
session.getTransaction().commit();
logger.info("Contest saved successfully!");
}
I call it in one place with one object but this method save the object Contest to the database 4x. What could be the problem?
Here is Contest class:
#Entity
#Table(name = "Contest")
public class Contest implements java.io.Serializable {
#Id
#Column(name="CONTEST_ID", unique = true, nullable = false, precision = 5, scale = 0)
#GeneratedValue
private int id;
#Column(name="NAME")
private String name;
#Column(name="DATE_OF_EVENT")
private Date dateOfEvent;
#Column(name="REG_OPEN")
private Date regOpen;
#Column(name="REG_CLOSE")
private Date regClose;
#Column(name="REG_RESTRICTION")
private Boolean regRestriction;
#Column(name="CAPACITY")
private int capacity;
#OneToMany(mappedBy="upperContest")
private List<Contest> precontests;
#ManyToOne(cascade={CascadeType.ALL})
#JoinColumn(name="UPPER_CONTEST_ID")
private Contest upperContest;
#ManyToMany(cascade = {CascadeType.ALL})
#JoinTable(name="MANAGING",
joinColumns={#JoinColumn(name="CONTEST_ID")},
inverseJoinColumns={#JoinColumn(name="PERSON_ID")})
private List<Person> managers;
#OneToMany(mappedBy="contest")
private List<Team> teams;
public Contest(String name, Date dateOfEvent, Date regOpen,
Date regClose, Boolean regRestriction) {
this.name = name;
this.dateOfEvent = dateOfEvent;
this.regOpen = regOpen;
this.regClose = regClose;
this.regRestriction = regRestriction;
this.precontests = new ArrayList<Contest>();
this.managers = new ArrayList<Person>();
this.teams = new ArrayList<Team>();
}
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 Date getDateOfEvent() {
return dateOfEvent;
}
public void setDateOfEvent(Date dateOfEvent) {
this.dateOfEvent = dateOfEvent;
}
public Date getRegOpen() {
return regOpen;
}
public void setRegOpen(Date regOpen) {
this.regOpen = regOpen;
}
public Date getRegClose() {
return regClose;
}
public void setRegClose(Date regClose) {
this.regClose = regClose;
}
public Boolean getRegRestriction() {
return regRestriction;
}
public void setRegRestriction(Boolean regRestriction) {
this.regRestriction = regRestriction;
}
public int getCapacity() {
return capacity;
}
public void setCapacity(int capacity) {
this.capacity = capacity;
}
public Contest getUpperContest() {
return upperContest;
}
public void setUpperContest(Contest c) {
this.upperContest = c;
}
public List<Contest> getPrecontests() {
return precontests;
}
public void addPrecontest(Contest e) {
this.precontests.add(e);
}
public void addManager(Person p){
this.managers.add(p);
}
public void addTeam(Team t){
this.teams.add(t);
}
public List<Person> getManagers(){
return managers;
}
}
And now I have to add some text because of restrictions of stackoverflow. Such Cool. Very wow.

You haven't posted the code where you instantiate Contest and populate its fields, but upperContest is probably the cause. You have CascadeType.ALL on the mapping, so you probably are persisting one contest which has a upper contest, thus actually persisting two instances because of cascade setting. Can't know for sure without that code.

Updating an ArrayList not permanent

Good day! I'm having a problem when updating an entity. When I click the "update" button, the changes are saved. However, when I go a different page, the recently changed (or added) items are there but the old items (that should be changed or removed) are also there. Particularly the relatedTags (the name and notes are updating just fine). Why is it not persistent or permanent? Here are the models:
Tag model:
package models;
import java.sql.Timestamp;
import java.util.*;
import javax.persistence.*;
import javax.validation.*;
import play.data.Form;
import play.data.validation.Constraints.*;
import play.db.ebean.*;
import play.db.ebean.Model.Finder;
import scala.Int;
#Entity
public class Tag extends Model{
#Id
private int id;
#Required
#MaxLength(value=100)
#Column(unique=true)
private String name;
#MaxLength(value=200)
private String notes;
#OneToMany(cascade=CascadeType.ALL)
public List<RelatedTag> relatedTags = new ArrayList<RelatedTag>();
#Version
public Timestamp lastUpdate;
public static Finder<Integer, Tag> find = new Finder(Int.class, Tag.class);
public Tag() {
}
public Tag(String name, String notes){
this.name = name;
this.notes = notes;
}
public Tag(int id, String name, String notes, List<RelatedTag> relatedTags) {
this.id = id;
this.name = name;
this.notes = notes;
this.relatedTags = relatedTags;
}
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 getNotes() {
return notes;
}
public void setNotes(String notes) {
this.notes = notes;
}
public List<RelatedTag> getRelatedTags() {
return relatedTags;
}
public void setRelatedTags(List<RelatedTag> relatedTags) {
this.relatedTags = relatedTags;
}
public static List<Tag> all() {
return find.all();
}
public static void create(Tag tag){
tag.save();
}
public static void delete(int id){
find.ref(id).delete();
}
public static void update(int id, Tag tag) {
tag.update(id); // updates this entity, by specifying the entity ID
}
public static boolean exists(Tag newTag) {
for(Tag allTags : Tag.find.all()) {
if(allTags.getName().equals(newTag.getName()))
return true;
}
return false;
}
}
RelatedTag model
package models;
import java.sql.Timestamp;
import java.util.*;
import javax.persistence.*;
import javax.validation.*;
import play.data.Form;
import play.data.validation.Constraints.*;
import play.db.ebean.*;
import play.db.ebean.Model.Finder;
import scala.Int;
#Entity
public class RelatedTag extends Model {
#Id
public int rtID;
private int id; //same as Tag's id
private String relationship;
private String relatedNotes;
#Version
public Timestamp lastUpdate;
public RelatedTag() {}
public RelatedTag(int id, String relationship, String relatedNotes) {
this.id = id;
this.relationship = relationship;
this.relatedNotes = relatedNotes;
}
public void setId(int id){
this.id = id;
}
public void setRelationship(String relationship){
this.relationship = relationship;
}
public void setRelatedNotes(String relatedNotes) {
this.relatedNotes = relatedNotes;
}
public int getId(){
return id;
}
public String getRelationship(){
return relationship;
}
public String getRelatedNotes() {
return relatedNotes;
}
public static void create(List<RelatedTag> rt){
((Model) rt).save();
}
public static boolean exists(String tagRelated) {
for(Tag tag : Tag.find.all()) {
if(tagRelated.equals(tag.getName()))
return true;
}
return false;
}
public static RelatedTag findByLabel(String tagRelated, String relation, String relatedNotes) {
RelatedTag relatedTag = null;
for(Tag tag : Tag.find.all()) {
if(tagRelated.equals(tag.getName())) {
relatedTag = new RelatedTag(tag.getId(), relation, relatedNotes);
}
}
return relatedTag;
}
public static Tag findTag(int id) {
for(Tag tag : Tag.find.all()) {
if(id == tag.getId())
return tag;
}
return null;
}
}
And here is where the updating happens.
Form<Tag> filledForm = tagForm.fill(Tag.find.byId(id)).bindFromRequest();
Tag editedTag = RelatedTag.findTag(id);
if(filledForm.hasErrors()) {
return badRequest(editTagForm.render(user, editedTag, filledForm, tags));
}
else {
List<RelatedTag> relatedTagsAlloc = new ArrayList<RelatedTag>();
java.util.Map<String, String[]> map = request().body().asFormUrlEncoded();
String[] relatedTags = map.get("relatedTags.tag.name");
String[] relationship = map.get("relatedTags.relationship");
String[] relatedNotes = map.get("relatedTags.relatedNotes");
if (relatedTags != null) {
for (int i = 0; i < relatedTags.length; i++) {
if (RelatedTag.exists(relatedTags[i].trim().toLowerCase().replaceAll("\\s+", " "))) {
relatedTagsAlloc.add(RelatedTag.findByLabel(
relatedTags[i].trim().toLowerCase().replaceAll("\\s+", " "), relationship[i], relatedNotes[i].trim()));
} else {
Tag unknown = new Tag(relatedTags[i], "");
Tag.create(unknown);
relatedTagsAlloc.add(RelatedTag.findByLabel(
relatedTags[i].trim().toLowerCase().replaceAll("\\s+", " "), relationship[i], relatedNotes[i].trim()));
}
}
editedTag.getRelatedTags().clear();
}
editedTag.setName(filledForm.get().getName().toLowerCase().replaceAll("\\s+", " "));
editedTag.setRelatedTags(relatedTagsAlloc);
editedTag.update();
Application.log(user, editedTag, action);
writeToFile(editedTag);
return ok(summary.render(user, editedTag));
}
What have I been doing wrong? Please help me fix this I really need your guidance. Thank you very much!