Can not set java.lang.Integer field to java.lang.Integer

Question

User declaration:

@Entity
public class User {
    @Id
    @GeneratedValue
    private Integer id;
    ....

Pattern declaration:

<         


        

Answer 1

What happens if you change your HQL query to from UserPattern where user.id = :user_id and pattern.id = :pattern_id?

I think Hibernate is confusing objects and ID fields.