title: Delete a child from a @OneToMany relationship
body: <p>In a One-To-Many relationship, how can I delete a child element without having to find and load up the parent, removing the element, update parent, THEN delete the child? To further illustrate my problem, I have the two classes Foo (parent) and Don (child of Don):</p>
  
  <pre><code>@Entity
  public class Foo {
      @Id
      @GeneratedValue
      private int id;
  
      @OneToMany
      private List&lt;Don&gt; dons;
  
      public int getId() {
          return id;
      }
  
      public List&lt;Don&gt; getDons() {
          // (loads dons as because lazy loading)
          return dons;
      }
  }
  
  @Entity
  public class Don {
      @Id
      @GeneratedValue
      private int id;
  
      public int getId() {
          return id;
      }
  }
  </code></pre>
  
  <p>If I have a Don instance with several Foos referring to it, I would get the following exception:</p>
  
  <blockquote>
    <p>Cannot delete or update a parent row: a foreign key constraint fails</p>
  </blockquote>
  
  <p>I know I can remove the instance from Foo, but is there a way to remove Don instances without finding Foos? (as of performance)</p>