title: Android Room, query with empty params
body: <p>I have an Android app that uses Room.
  I have the following query:</p>
  
  <pre><code>@Query("SELECT * FROM model WHERE (:someInt is null)")
  List&lt;Model&gt; myQuery(Integer someInt);
  </code></pre>
  
  <p>However, when I call it with a null value, it returns an empty List.
  The following test fails.</p>
  
  <pre><code>    List&lt;Model&gt; models = myDao.myQuery(null);
      assertFalse(models.isEmpty());
  </code></pre>
  
  <p>In the other hand when I try it using the following query it returns items.</p>
  
  <pre><code>@Query("SELECT * FROM model WHERE (:someInt is not null)")
  </code></pre>
  
  <p>Is there something that I'm missing?</p>
  
  <p>I'm using Room 2.2.5.</p>
  
  <p>Thanks,</p>