Override @JoinColumn nullable value

Question

I have a lot of mapped entities, and all of them extends from an abstract class BaseEntityImpl .

In this class, I have 1 attribute company, annotated like this:

@ManyToOne(fetch=FetchType.EAGER)
@JoinColumn(name = "id_company", nullable = false)
public Company getCompany() {
    return company;
}

In only one of the subclasses ( Company to be precise), I want this attribute to be NULLEABLE.

But overriding the setter

@ManyToOne(fetch=FetchType.EAGER)
@JoinColumn(name = "id_company", nullable = true)
@Override
public Company getCompany() {
    return company;
}

leads me to this error:

Caused by: org.hibernate.MappingException: Duplicate property mapping of company found in ar.com.test.entity.Company

Is there any way, besides not extending for this class, and explicitly defining all attributes/getters/setters in the Company class to achieve this?

Thank you so much!

Answer 1

Have you tried looking at @AssociationOverride ?

@Entity
@AssociationOverride(name="company",
                     joinColumns=@JoinColumn(name="id_company", nullable=true))
public class Company extends BaseEntityImpl {
   ....
}