title: Is that possible using queryDSL?
body: <p>There are two entities A and B relate one to many.</p>
  
  <p><a href="https://i.stack.imgur.com/Q7tET.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Q7tET.png" alt="enter image description here"></a></p>
  
  <p>I want to extract "B_2" with there parent("A_1") and children("B_1", "B_2", "B_3") of there parent. So I try my code below.</p>
  
  <pre><code>from(QB.b).join(QB.b.a, QA.a).fetch().join(QA.a.bList).fetch().where(QB.b.name.eq("B_2"));
  </code></pre>
  
  <p>But result B.a.bList are just proxy object. And it occur to N+1 problem. 
  Anyone help?</p>