Hibernate mapping: ignore a super class field

Question

I have a class A and class B

public class A{
int f1;
int f2;
int f2;
}

public class B extends A{
}

my question is how to ignore a field for example 'f2', in the table mapped to B?

Answer 1

I will try to answer assuming the edit I have made to your post is approved. In the code below I am ignoring the field f2 from class A i.e. superclass of B using AttributeOverride.

@Entity
@AttributeOverride(name = "f2", column = @Column(name = "f2_col", insertable = false, updatable = false)
public class B extends A{
}

If you want to read about it further, refer to AttributeOverride.

AttributeOverride with insertable = false, updatable = false should help, but it also depends on your inheritance strategy. It just helps making mapped fields inherited from a superclass transient, so that some other subclass can use it but it will be ignored for this particular sub class.