Version increment not triggered on @OneToOne property modification having inverse owner --------------------------------------------------------------------------------------- Key: ANN-843 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-843 Project: Hibernate Annotations Issue Type: Bug Affects Versions: 3.4.0.GA 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 -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira