I am trying to override the default-generated column names for a (non-entity) collection of Map<String, String>

An example would the definition of 'myMap' in:

@Entity
public class MyClass {

private Long id;
private Map<String, String> myMap = new HashMap<String, String>();

@Id @GeneratedValue
public Long getId() {
return id;
}

@CollectionOfElements()
public Map<String, String> getMyMap() {
return myMap;
}
}

This results in the schema definition:

create table my_class_my_map
(my_class bigint not null, element varchar(255), mapkey varchar(255), primary key (my_class, mapkey)) type=InnoDB;

However, I would like the auto-generated column names "my_class" and "element" to be user defined.

I reaslise that the column "mapkey" can be defined using:
@org.hibernate.annotations.MapKey(columns = { @Column(name = "my_column_name_here") })

And I *suspect* that what I want to achieve can be accomplished using the annotation:
@AttributeOverride
but nothing works that I have tried so far.

Is there a Hibernate guru out there that can help me?

just use @Column to override element
and @JoinColumn to override the pk / fk

Thank you for your help, emmanuel, I am half way there!


overrode the default name of 'element' in the 'Map' table.

However, I did not have any luck with:

It seemed to have no effect.
I was wondering if I needed to specify attributes other than just 'name' in the @JoinColumn?

Ah sorry, this is indeed
@JoinTable(joinColumns=@JoinColumn(...)