@Embeddable
public class EmbeddableWithCodes {
    @Embedded
    private SimpleEmbeddable code1;
    @Embedded
    private SimpleEmbeddable code2;
    private String name;
...

@Entity
@Table(name = "TEST_SIMPLE_PERSON")
@SecondaryTable(name = "SECONDARY_PERSON")
public class SimplePerson {
    ...
    @Embedded
    @AttributeOverrides({@AttributeOverride(name = "code1.code", column = @Column(table = SECONDARY, name = "CODE1")),
            @AttributeOverride(name = "code2.code", column = @Column(table = SECONDARY, name = "CODE2")),
            @AttributeOverride(name = "name", column = @Column(table = SECONDARY, name = "NAME"))})
    private EmbeddableWithCodes embeddableWithCodes;
    ...