[hibernate-issues] [Hibernate-JIRA] Commented: (HHH-4289) Version increment not triggered on @OneToOne property modification having inverse owner

Version increment not triggered on @OneToOne property modification having inverse owner --------------------------------------------------------------------------------------- Key: HHH-4289 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4289 Project: Hibernate Core Issue Type: Bug Components: annotations Environment: Hibernate 3.3.1.GA , Microsoft SQL Server Reporter: Guenther Demetz Priority: Minor Attachments: Testcase.jar In the revised "Java Persistence with Hibernate" book by Christian Bauer and Gavin King on page 464 there's written following about versioning: "If you use Hibernate as JPA provider ... every value-typed property modification .. triggers a version increment." Now I saw that Version increment indeed is not triggered on @OneToOne properties having an inverse owner (= mappedBy setted). This allows several concurrent transactions to set the association from same object towards different targets without having a OptimistickLockException at commit. This violates the ToOne policy! (Hibernate detects the inconsistency later when loading the property from database: org.hibernate.HibernateException: More than one row with the given identifier was found) Please see attached junit-testcase for reproducing the problem. regards Guenther Demetz