public class JuausAngebot extends AbstractLaufnummerIdModel {

   // Fields

   /** The laufnummerId. */
   private LaufnummerId laufnummerId;
.....

@Override
   @Type(type = "najsre7.dao.hibernate.userType.immutable.ids.AngebotIdUT")
   @Id
   @GeneratedValue(generator = "generator")
   @GenericGenerator(name = "generator", strategy = "najsre7.model.ids.LaufnummerGenerator", parameters = {
         @Parameter(name = "allocationSize", value = "1"),
         @Parameter(name = "laufnummerType", value = "" + LaufnummerTypesConstants.ANGEBOT),
         @Parameter(name = "sequence", value = "SEQ_TANGEBOT") })
   @Column(name = "ILAUFNUMMER", unique = true, nullable = false, insertable = true, updatable = true, precision = 9, scale = 0)
   public LaufnummerId getLaufnummerId() {
      return laufnummerId;
   }

   /**
    * Sets the laufnummerId.
    *
    * @param laufnummerId the laufnummerId
    */
   @Override
   public void setLaufnummerId(LaufnummerId laufnummerId) {
      this.laufnummerId = laufnummerId;
   }

   /**
    * Gets the kurse.
    *
    * @return kurse
    */
   @OneToMany(fetch = FetchType.LAZY, mappedBy = "angebot")
   @Cascade( { CascadeType.ALL, CascadeType.DELETE_ORPHAN })
   @Valid
   public Set<Kurs> getKurse() {
      return this.kurse;
   }


//more properties
}

@ManyToOne(fetch = FetchType.EAGER)
   @JoinColumn(name = "FK_TANG_LAUFNR", unique = false, nullable = false, insertable = true, updatable = true)
   public JuausAngebot getAngebot() {
      return this.angebot;
   }