title: Upload data to a collection (pojo list) of App engine data store
body: <p>I have a GAE entity (via JPA) of the following form:</p>
  
  <pre><code>@Entity
  public class QuestionDB {
  
    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Key key;
  
    private String question;
  
    private ArrayList&lt;String&gt; options;
  
    private int answer;
  }
  </code></pre>
  
  <p>How can I bulk upload data to this DB? I am trying to use the data upload mechanism using csv files as shown <a href="https://cloud.google.com/developers/articles/how-to-build-mobile-app-with-app-engine-backend-tutorial#cus" rel="nofollow">here</a>
  . Also what structure of csv should be to incorporate the list of string? </p>