@OrderBy does NOT force List semantics instead of Bag semant

bigm25 · **Joined:** Tue Mar 28, 2006 4:03 pm **Posts:** 11

The Hibernate Annotations Reference says (in Table 2.1), that when mapping a relation with a java.util.List, List semantics will be used (instead of Bag semantics) if theres is EITHER an @OrderBy OR an @IndexColumn annotation.

But for this relation:

Code:

  @OneToMany
  @OrderBy(value="seqno")
  public List<Child> getChildren() {
    return children;
  }

hibernate still applies Bag semantics. (PersistentBag).

When annotating with @IndexColumn

Code:

  @OneToMany
  @IndexColumn(name="seqno")
  public List<Child> getChildren() {
    return children;
  }

Hibernate indeed uses List semantics (PersistentList).

I digged into org.hibernate.cfg.annotations.CollectionBinder, and indeed it looks like @OrderBy is only used to generate an SQL "order by", but has NO effect on List/Bag semantics.

Could sbdy please verify this?

Rgds,

M

My Versions:

* JBoss 4.0.4RC1
* Hibernate Annotations 3.1beta8
* Hibernate EntityManager 3.1beta6

emmanuel · **Posted:** Sun Apr 16, 2006 12:14 pm

The doc is wrong, I've fixed it. thanks.