Convert String or int To Enum in JPA - jpa

Question

I don't know how I can persist an entity(with enum) to the database.
When I fill my form like this;
form.setTypZamowienia(SlownikZamowienie.SENIOR)
then 666 is stored in the database. But when I try like this;
form.setTypZamowienia(SlownikZamowienie.valueOf(request.getParameter("typKlienta").trim()));
0 is stored in the database.
How do I make this work?
For any help I will be very grateful.
My enum :
public enum SlownikZamowienie
{
JUNIOR(42),
SENIOR(666),
PRINCIPAL(31416);
private final int wartosc;
SlownikZamowienie(int wartosc) {
this.wartosc = wartosc;
}
}
My Entity:
package test.jpa.domain;
import java.io.Serializable;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Enumerated;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
import test.enums.SlownikZamowienie;
#Entity
#Table(name="Piess")
public class Pies implements Serializable {
private static final Long serialVersionUID = 1L;
#Id
#GeneratedValue(strategy=GenerationType.AUTO)
#Column(name="id")
int id;
#Column(name = "imie")
String imie;
#Enumerated
#Column(name = "rasa")
SlownikZamowienie typzamowienia;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getImie() {
return imie;
}
public void setImie(String imie) {
this.imie = imie;
}
public SlownikZamowienie getTypzamowienia() {
return typzamowienia;
}
public void setTypzamowienia(SlownikZamowienie typzamowienia) {
this.typzamowienia = typzamowienia;
}
}

Answer 1

As of JPA 2.1 you can use an attribute converter (known as a UserType in the Hibernate world). See these two articles for details on how to implement such a solution:
www.thoughts-on-java.org/jpa-21-type-converter-better-way-to/
www.thoughts-on-java.org/jpa-21-how-to-implement-type-converter/