Sort collection using one-to-one field

[Kerry Wilson]

How can I sort a collection using a value in a one-to-one field? I have the mapping setup to join but the following does not work:

   <set inverse="true" name="books" order-by="genre.title asc">
   
   class Author {
      private Set<Book> books;
   }

   class Book {
       private Genre genre;
   }

   class Genre {
       private String title;
   }

the order by clause appears in the query but is not prepended with the generated table alias (ie, genre_2.title asc). The order-by works fine when using any field in Book.

Is this possible?