I have a column annotated with @Transient in my application.
I can’t delete the annotation without breaking some services of the application.

However, for new features, I need it.

I tried some things with inheritance
(@Inheritance(strategy = InheritanceType.SINGLE_TABLE))
but didn’t achieve good results.

My final solution was to duplicate the entity mapping of the table, creating two entities for one table. I removed the attribute from the parent class and reassigned it to the child class.

@MappedSuperclass
public abstract classe A { 
   private String attributeA
}
@MappedSuperclass
public abstract classe B extends A { 
   private String attributeB
}

@Entity
@Table(name = "exemple")
public class C extends B {
    private String noTransient
}

@Entity
@Table(name = "exemple")
public class D extends B {
    //this class doesnt need the attribute
    @Transient
    private String noTransient
}

In this case, my old entity with the @Transient is now C, the olds services of the application are working as before, and new entity D is used for my new services.

I’m pretty sure that i can find a better solution, can you give me your opinion