Override @ManyToOne targetEntity for @Embedded with interfaces

I have used a workable solution to this for a while now, but it includes a minor case of vendor lock-in. I have found no way of doing this with JPA annotations only, but there is a Hibernate-specific annotation @Target that does the trick. I have done something like you have, with the expected results. However, I didn't use your other annotations so I can't guarantee it will turn out to work as you expect.

Nothing strange going on in the Embeddable classes:

public interface PointsInt extends Serializable {
    int offensivePoints();

    int defensivePoints();

}

@Embeddable
public class Points implements PointsInt {
    private int def;
    private int off;
    public int offensivePoints() { return off; }

    public int defensivePoints() { return def; }

}

But in the consuming class, we use Hibernate's @Target:

import javax.persistence.*;
import org.hibernate.annotations.Target;

@Entity
public class Series extends LongIdEntity implements Serializable {

    @Embedded
    @Target(Points.class)
    private PointsInt points;
    // I prefer to declare my annotations on fields rather than methods
}

Result:

mysql> describe series;
+-----------------+-------------+------+-----+---------+----------------+
| Field           | Type        | Null | Key | Default | Extra          |
+-----------------+-------------+------+-----+---------+----------------+
| id              | bigint(20)  | NO   | PRI | NULL    | auto_increment |
| def             | int(11)     | YES  |     | NULL    |                |
| off             | int(11)     | YES  |     | NULL    |                |
+-----------------+-------------+------+-----+---------+----------------+
3 rows in set (0.12 sec)