title: Sugar ORM cannot bulk delete
body: <p>I am using <a href="http://satyan.github.io/sugar/" rel="nofollow">Sugar ORM</a> in my app. It works ok except one action, that is, I cannot bulk delete.</p>
  
  <p>My class is like this</p>
  
  <pre><code>public class Person extends SugarRecord&lt;Person&gt; {
  
  String name;
  String image;
  String companyLFirst;
  String companyLSecond;
  String grade;
  int ranking;
  
  public Person(Context context) {
      super(context);
  }
  
      public Person(Context context, String name, String image, String companyL1, String companyL2, String grade,
          int ranking) {
      super(context);
      setName(name);
      setCompanyL1(companyL1);
      setCompanyL2(companyL2);
      setImage(image);
      setGrade(grade);
      setRanking(ranking);
      }
  //getters and setters below
  }
  </code></pre>
  
  <p>I can save, I can listAll, but cannot deleteAll:</p>
  
  <pre><code>Person.deleteAll(Person.class);//does nothing, data is not getting deleted
  </code></pre>
  
  <p>Has anybody used deleteAll of Sugar ORM? Does it work actually?</p>