Hibernate Inheritance and Spring Boot

Question

What is the proper way to have an abstract class A, inherited by abstract class B, inherited by class C using Hibernate and Spring Boot?

@Entity 
@Inheritance 
abstract class A{} 

@Entity
@Inheritance
abstract class B extends A{}

@Entity 
@Inheritance 
final class C entends B{}

The problem is I have an exception "Caused by: org.postgresql.util.PSQLException: ERROR: column something(from class A) does not exist". Are my annotations wrong?

Have you tried @MappedSuperclass? Also, entities shouldn't be final — crizzis
– crizzis, Commented Jun 9, 2020 at 12:59

Eliaquim Tchitalacumbi · Accepted Answer · 2020-06-09 14:29:00Z

1

As far as I know, the abstract class should not be an Entity. You cannot instanciate it. Try

@MappedSuperclass
public abstract class A {
}

@MappedSuperclass
public abstract class B extends A {
}

@Entity
public class C extends B {
}

And, like he said, class C should not be final.

answered Jun 9, 2020 at 14:29

Eliaquim Tchitalacumbi

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