Re: [hibernate-dev] Can a transient attribute be overridden to be persistent in a subclass?

I *think* the following is valid, but I need confirmation. This mapping does seem to work for Hibernate. A transient attribute, Employee#title, gets overridden as a persistent attribute, Editor#title, stored in a column named "e_title". Writer#title is also transient, but Writer#group uses the same "e_title" column as a foreign key. That foreign key value is used to populate Writer#title. @Entity @Table(name="Employee") @Inheritance(strategy = InheritanceType.SINGLE_TABLE) @DiscriminatorColumn(name="department") public abstract class Employee { private String name; private String title; @Id public String getName() { return name; } @Transient public String getTitle() { return title; } protected void setName(String name) { this.name = name; } protected void setTitle(String title) { this.title = title; } } @Entity public class Editor extends Employee { @Column(name = "e_title") public String getTitle() { return super.getTitle(); } public void setTitle(String title) { super.setTitle( title ); } } @Entity public class Writer extends Employee { private Group group; @ManyToOne(optional = false) @JoinColumn(name = "e_title") public Group getGroup() { return group; } public void setGroup(Group group) { this.group = group; setTitle( group.getName() ); } } In 4.2, the above mapping worked with Employee#title being persistent, but does not work in 5.3. Section 2.2 Persistent Fields and Properties of the spec says: "Entity subclasses may override the property accessor methods. However, portable applications must not override the object/relational mapping metadata that applies to the persistent fields or properties of entity superclasses." Would overriding a transient attribute be portable? If not, is that something Hibernate would/should support? Thanks, Gail _______________________________________________ hibernate-dev mailing list hibernate-dev(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/hibernate-dev