package auction.dao;import auction.model.Comment;/** * Business DAO operations related to the <tt>Comment</tt> entity. * <p> * This is an empty interface, currently there are no business-oriented * data access operations for this class. However, preparing the interface * means preparing ourself for future changes. That way, no refactoring is * necessary should we add methods one day. Note that with a sensible * factory, such as the <tt>HibernateDAOFactory</tt>, no concrete implementation * of this empty interface is needed, but a parameterized <tt>GenericDAO</tt> * for Hibernate can be constructed and used. * * @see Comment * * @author Christian Bauer */public interface CommentDAO extends GenericDAO<Comment, Long> {    // Empty}