@Entity
@Indexed
public class BusinessUnit implements Serializable {
  // there are some fields but they are not realevant and ...
  @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL, mappedBy = "businessUnit")
  @CollectionOfElements
  @IndexedEmbedded
  private Collection<BuAddress> addresses = new HashSet<BuAddress>();
  // blablah
}

@Entity
@Embeddable
public class BuAddress implements Serializable {
  // there are some fields but they are not realevant and ...
  @Column(name = "ADR_RUE", length = 100)
  @Field(store = Store.YES)
  private String rue;
  // Some other fields ...
  @ManyToOne(fetch = FetchType.EAGER)
  @JoinColumn(name = "BUSINESS_UNIT_ID")
  @ContainedIn
  private BusinessUnit businessUnit;
}

    // @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL, mappedBy = "businessUnit")
@CollectionOfElements(fetch = FetchType.EAGER)
@IndexedEmbedded
private Collection<BuAddress> addresses = new HashSet<BuAddress>();

@Entity
@Indexed
public class BusinessUnit implements Serializable {

    private static final long serialVersionUID = 6381933189791412636L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(nullable = false, name = "BU_ID")
    private Integer id;
    @Column(name = "BU_ENNUMB", length = 100)
    private String entityNumber;
    @Column(name = "BU_MAIL", length = 200)
    private String email;
    @Column(name = "BU_WEB", length = 512)
    private String website;
    @Column(name = "BU_GSM", length = 20)
    private String gsm;
    @Column(name = "BU_TEL", length = 20)
    private String tel;
    @Column(name = "BU_FAX", length = 20)
    private String fax;
    @Column(name = "BU_VAL")
    private Boolean validity;
    @Column(name = "MODIFDATE")
    private Date modifyDate;
    @Column(name = "CREATIONDATE")
    private Date creationDate;
    // Associtations
    @OneToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "ARTINFO_ID")
    @Fetch(FetchMode.JOIN)
    @IndexedEmbedded
    private ArtisanInfo artisanInfo;
    // @OneToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL, mappedBy = "businessUnit")
    @CollectionOfElements(fetch = FetchType.EAGER)
    @IndexedEmbedded
    private Collection<BuAddress> addresses = new HashSet<BuAddress>();
    @ManyToOne(fetch = FetchType.LAZY)
    @JoinColumn(name = "KBOENTR_ID")
    private KboEnterprise enterprise;
    @ManyToMany
    @JoinTable(name = "SELECTEDCAT", joinColumns = @JoinColumn(name = "BU_ID"), inverseJoinColumns =    @JoinColumn(name = "CAT_ID"))
    private Set<Categories> categories = new HashSet<Categories>();

    ...
}

@Entity
// @Indexed
public class BuAddress implements Serializable {

    private static final long serialVersionUID = -1145537123252752661L;

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    @Column(nullable = false, name = "ADR_ID")
    private Integer id;
    @Column(name = "ADR_LANG", length = 5)
    private String lang;
    @Column(name = "ADR_RUE", length = 100)
    @Field(store = Store.YES)
    private String rue;
    @Column(name = "ADR_NUM", length = 5)
    private String numero;
    @Column(name = "ADR_BTE", length = 5)
    private String boite;
    @Column(name = "ADR_CODE", length = 5)
    private String codepostal;
    @Column(name = "ADR_LOC", length = 5)
    @Field
    private String localite;
    @Column(name = "ADR_PAY", length = 5)
    private String pays;
    // Associations
    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "COMMUNE_ID")
    @Fetch(FetchMode.JOIN)
    @IndexedEmbedded
    private Commune commune;

    @ManyToOne(fetch = FetchType.EAGER)
    @JoinColumn(name = "BUSINESS_UNIT_ID")
    @ContainedIn
    private BusinessUnit businessUnit;
 
   ...

}