Set<Component> firstSet;
Set<Component> secondSet

public class LineItem implements Serializable, XmlSerializable {
   private String id; // our primary key
   private String otherid; // our foreign key

   private Set<Component> firstSet; // onetomany linked with primary key
   private Set<Component> secondSet; // onetomany linked with foreign key

   @Id @Column(name="FIRSTSET_ID", insertable = false, updatable = false, nullable = false)
   public String getId() { return this.id; }
   public void setId(String i) { this.id = i; }

   @OneToMany(fetch=FetchType.EAGER)
   @JoinColumn(name="ID", referencedColumnName="FIRSTSET_ID")
   public Set<ComponentData> getFirstSet() {
      return lineItemData;
   }
   public void setFirstSet(Set<Component> c) {
      this.lineItemData = lineItemData;
   }

   @Column(name="OTHERNONPKID")
   public String getOtherid() { return otherid; }
   public void setOtherid(String o) { this.otherid = o; }

   @OneToMany(fetch=FetchType.EAGER)
   @JoinColumn(name="ID", referencedColumnName="OTHERNONPKID")
   public Set<Component> getSecondSet() {
      return secondSet;
   }
   public void setSecondSet(Set<ComponentData> s) {
      this.secondSet = secondSet;
   }