Hibernate: org.hibernate.MappingException: Could not determine type for: java.util.Set

Question

I am trying to use Set in hibernate. The problem I don't know to how to write annotation on the Set table.

    @Entity
    @Table(name="user_settings")
    public class UserSettings {
    @Id
    @GeneratedValue
    private int id;
    private int userid;
    protected Set<Integer>foreignLanguageId;
    public UserSettings() {   

    }
    public UserSettings(int userid, int nativeLanguageId,
            Set<Integer> foreignLanguageId, Date birthday) {
        this.userid = userid;
        this.nativeLanguageId = nativeLanguageId;
        this.foreignLanguageId = foreignLanguageId;
        this.birthday = birthday;
    }

    @OneToMany
    @JoinColumn(name="userid", nullable=false)// This annotation
    public Set<Integer> getForeignLanguageId() {
        return foreignLanguageId;
    }

Error:

org.hibernate.MappingException: Could not determine type for: java.util.Set, at table: user_settings, for columns: [org.hibernate.mapping.Column(foreignLanguageId)]
at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:314)...........

I think you should change protected to private for your foreignLanguageId variable and use getters and setters along with it, so it can be mapped in hibernate. — cнŝdk
– cнŝdk, Commented May 23, 2016 at 16:03

v.ladynev · Accepted Answer · 2016-05-23 15:45:45Z

0

You should to use entity to make an association not id

@Entity
@Table(name="user_settings")
public class UserSettings {

    private Set<Language> foreignLanguages;

    @OneToMany
    @JoinColumn(name="fk_user_setting", nullable = false)
    public Set<Language> getForeignLanguages() {
        return foreignLanguages;
    }

}

if you want to use Integer you can use @ElementCollection

@Entity
@Table(name="user_settings")
public class UserSettings {

    private Set<Integer> foreignLanguages;

    @ElementCollection
    public Set<Integer> getForeignLanguages() {
        return foreignLanguages;
    }

}

answered May 23, 2016 at 15:45

v.ladynev

20.1k9 gold badges50 silver badges70 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Lay Leangsros Over a year ago

I put: @ElementCollection, but it is still not working, I am using hibernate 4. I will try to create class Language now. Thx.

v.ladynev Over a year ago

@LayLeangsros It should work even with Hibernate 3. Please, add to the question your code with @ElementCollection and a stack trace.

Collectives™ on Stack Overflow

Hibernate: org.hibernate.MappingException: Could not determine type for: java.util.Set

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related