Stuff

public class Boxes {    @Id    @GeneratedValue    private Long id;    @ManyToOne    private Boards parentBoard;    @ManyToOne    private Boxes parentBox; // the root box will have parentBox == null;    @OneToMany (cascade = CascadeType.REMOVE)    @JoinTable (name = "Boxes_childboxes",             joinColumns = @JoinColumn(name="BoxId"),             inverseJoinColumns = @JoinColumn(name="childBoxId")                )    private Collection<Boxes> childBoxList = new ArrayList<Boxes>(); // the last leaf box will have childBox == null;    @OneToMany  (cascade = CascadeType.REMOVE)    private Collection<Tasks> taskList = new ArrayList<Tasks>();@Entitypublic class Tasks {    @Id    @GeneratedValue    private Long id;    @ManyToOne    private Boxes parentBox;    @ManyToMany    private Collection<TaskPrivileges> taskPrivilegesList = new ArrayList<TaskPrivileges>();    @ManyToOne    private Companies company;    private String title;    @Lob    private String description;    private String priority; // high , low, critical, normal    private String status; //completed, working, pending/queued, in problems.    @ManyToMany     private Collection <Users> userList = new ArrayList<Users>();