@OrderColumn无法按插入顺序对arraylist排序

需要ArrayList按对象保存到数据库的顺序保存对象。使用@OrderColumn来实现这一点,但由于某种原因,它无法按从早到晚排序。

Watching.class

  @ManyToMany(cascade = CascadeType.ALL,
      targetEntity = Ticker.class,
      fetch = FetchType.LAZY)
  @JoinTable(name="watching_ticker",
      joinColumns = @JoinColumn(name="watching_id"),
      inverseJoinColumns= @JoinColumn(name="ticker_id"))
  @OrderBy("id desc")
  private List<Ticker> tickers;

...

Ticker.class
  @JsonIgnore
    @ManyToMany
    @JoinTable(name ="watching_ticker",
        joinColumns = @JoinColumn(name ="ticker_id"),
        inverseJoinColumns = @JoinColumn(name = "watching_id"))
  protected Set<Watching> watchings;

..

Tester

Account account;
AccountService accountService;
    Ticker ticker;
    Ticker tickerTwo;

  @Before
  public void setUp() throws Exception {
    account = ...
        ticker = ...;
      tickerTwo = ...;
    ....
    }

  @Test
  public void testSave() {

    Watching watching = account.getWatching();
    watching.getTickers().add(ticker);
    watching.getTickers().add(tickerTwo);


    Watching saved = accountService.save(account).getWatching();


    Ticker one = saved.getTickers().get(0);
    int size = saved.getTickers().size();
    assertEquals(2, size);
    Assert.assertEquals(one, tickerTwo); <-- fails
  }