@Entity
@Inheritance(strategy = InheritanceType.JOINED)
public abstract class SectionType extends AbstractLongEntity {

    private ContainerSection parentContainerSection;
    private int orderNo;

    @ManyToOne
    @JoinColumn(name="parent_container_section_id", insertable = false, updatable = false, nullable=false)
    @ForeignKey(name = "section_type_fk_container_section")
    public ContainerSection getParentContainerSection() {
        return this.parentContainerSection;
    }

    public void setParentContainerSection(ContainerSection parentContainerSection) {
        this.parentContainerSection = parentContainerSection;
    }

   @Column(insertable = false, updatable = false)
    public int getOrderNo() {
        return this.orderNo;
    }

    public void setOrderNo(int orderNo) {
        this.orderNo = orderNo;
    }
...

@Entity
public class ContainerSection extends SectionType {

    private List<SectionType> sectionTypes = new ArrayList<SectionType>(0);

    @OneToMany
    @JoinColumn(name="parent_container_section_id", nullable=false)
    @IndexColumn(name = "orderNo")
    public List<SectionType> getSectionTypes() {
        return this.sectionTypes;
    }

    public void setSectionTypes(List<SectionType> sectionTypes) {
        this.sectionTypes = sectionTypes;
    }