title: Merge and lazy loading
body: <p>Hi I hope you can help me with this question:  </p>
  
  <pre><code>Student
  ...
  @ManyToOne
  Mentor
  
  
  Mentor
  ...
  @OneToMany
  Student
  </code></pre>
  
  <p>Is there any difference in using merge on a student when:</p>
  
  <p>Mentor is lazy:
  @ManyToOne(fetch=FetchType.LAZY,cascade = CascadeType.MERGE))</p>
  
  <p>Mentor is eager:
  @ManyToOne(fetch=FetchType.EAGER,cascade = CascadeType.MERGE))</p>