JPA - Mapping collections

    @ElementCollection
    @CollectionTable(name = "t_itineraris_desc",
                     joinColumns = {@JoinColumn(name = "it_codi")})
    @MapKeyColumn(name = "it_desc_idioma", columnDefinition = "bpchar", length=2)
    @Column(name = "it_desc_nom")
    private Map<String, String> names = new HashMap<String, String>();


    @OneToMany(mappedBy="identity.itinerary")
    @OrderColumn(name="it_elem_ordre")
    private List<ItineraryFeature> features =
               new ArrayList<ItineraryFeature>();