title: @ElementCollection not saved by Hibernate 4.0.1
body: <p>I have class (entity) <code>A</code> which contains list of objects (entities) <code>B</code> which contains <code>Set&lt;String&gt; strings</code>.</p>
  
  <pre><code>@Entity
  @Table(name = "a")
  public class A {
  
      private int id;
      private List&lt;B&gt; bList;
  
      @Id
      @GeneratedValue(strategy = GenerationType.IDENTITY)
      @Column(name = "aId")
      public int getId() {
          return id;
      }
  
      @OneToMany(fetch = FetchType.EAGER)
      @JoinColumn(name = "aId", nullable = false)
      @Cascade({org.hibernate.annotations.CascadeType.SAVE_UPDATE})
      public List&lt;B&gt; getBList() {
          return bList;
      }
      ... setters and other stuff
  }
  </code></pre>
  
  <hr>
  
  <pre><code>@Entity
  @Table(name = "b")
  public class B {
  
      private int id;
      private int aId;
      private Set&lt;String&gt; strings;
  
      @Id
      @GeneratedValue(strategy = GenerationType.IDENTITY)
      @Column(name = "bId")
      public int getId() {
          return id;
      }
  
      @ElementCollection(fetch = FetchType.EAGER)
      @CollectionTable(name = "b_strings", joinColumns = {@JoinColumn(name = "bId")})
      @Cascade({org.hibernate.annotations.CascadeType.SAVE_UPDATE})**
      public Set&lt;String&gt; getStrings() {
          return strings;
      }
  
      @Column(name = "aId", insertable = false, updatable = false)
      public int getAId() {
          return aId;
      }
      ... setters and other stuff
  }
  </code></pre>
  
  <p>I create object <code>A</code> and then I try to save it:</p>
  
  <pre><code>A a = new A();
  List&lt;B&gt; l = new ArrayList&lt;B&gt;();
  a.setBList(l);
  B b = new B();
  l.add(b);
  b.setStrings(new HashSet&lt;String&gt;());
  b.getStrings().add("1");
  b.getStrings().add("2");
  
  b = new B();
  l.add(b);
  b.setStrings(new HashSet&lt;String&gt;());
  b.getStrings().add("3");
  
  Session session = sessionFactory.openSession();
  session.saveOrUpdate(a);
  session.close();
  </code></pre>
  
  <p><code>A</code> and <code>B</code> object is saved (inserted) but set with <code>strings</code> is not saved. I'm using Spring 3.1 and Hibernate 4.0.1. Why is hibernate ignoring <code>@ElementCollection</code>? Table is created, mysql workbech shows it as readonly...</p>