title: @JoinFormula and @OneToMany definition - poor documentation
body: <p>I have two questions concerning @JoinFormula and @OneToMany annotations:</p>
  
  <ol>
  <li><p>How can I limit the number of result with <code>@JoinFormula</code> and <code>@OneToMany</code> annotations?</p></li>
  <li><p>How can I define that <code>id</code> in expression <code>author = id</code> refers to <code>Author.id</code>?</p>
  
  <pre><code>Author {
  
      @Id
      private Long id;
  
      @OneToMany
      @JoinFormula(value = "SELECT a FROM Article a WHERE author = id AND schedule &lt; CURRENT_TIMESTAMP()") // limit = 15
      private List&lt;Article&gt; pastArticles;
  }
  </code></pre></li>
  </ol>
  
  <p>Like this, I keep having the pastArticles empty, even when I remove the <code>schedule &lt;</code> part of the clause.</p>
  
  <p>Thanks!</p>