[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-3843) @Audited and @ManyToMany relation problem - after modyfing an Entity: org.hibernate.NonUniqueObjectException with message: "a different object with the same identifier value was already associated with the session ...

@Audited and @ManyToMany relation problem - after modyfing an Entity: org.hibernate.NonUniqueObjectException with message: "a different object with the same identifier value was already associated with the session ... ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Key: HHH-3843 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3843 Project: Hibernate Core Issue Type: Bug Components: envers Affects Versions: 3.3.1 Environment: envers.jar 1.2.0, Hibernate 3.3.1, postgresql-8.3, jboss-4.2.3 Reporter: Michał Maryniak Assignee: Lukasz Antoniak Fix For: 4.0.0.next Attachments: enverse.7z, enverse.zip, envers-many2many_ticket3843.zip There is a problem with unidirectional @ManyToMany relation. This case is different than the one with inheritance: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3830. The example is trival and code is as simple as it can be. A single Person can have many roles, and one Role can by assigned to many Person entities. @Entity @Audited public class Person implements Serializable { (...) @ManyToMany public List<Role> getRoles() { return roles; } (...) } and @Entity @Audited public class Role implements Serializable { (...) } And here comes a use case: 1) I create role 'admin' 2) I create role 'user' 3) I create person 'john' and add him a role 'admin' 4) I edit 'john' and add him second role 'user' and I got an exception: org.hibernate.NonUniqueObjectException with message: "a different object with the same identifier value was already associated with the session: [Person_Role_AUD#{roles_id=1, Person_id=5, REV=DefaultRevisionEntity(id = 7, revisionDate = 2009-04-01 10:46:32)}]" If I add one role and remove the second one, or if I only remove a role - an Exception does not occur. I attached a zip file with this simple SEAM project generated by seam-gen 2.1.1 GA. I haven't included jar files, but project requires jar's "generated" with seam-gen (2.1.1) and following jar's have been replaced with new ones: 2008-06-13 13:09 313˙898 dom4j.jar 1.6.1 2009-03-23 13:01 285˙158 envers.jar 1.2.0-hibernate-3.3 2008-08-20 11:27 279˙714 hibernate-annotations.jar 3.4.0.GA 2008-08-20 11:31 66˙993 hibernate-commons-annotations.jar 3.1.0.GA 2008-08-20 12:19 119˙292 hibernate-entitymanager.jar 3.4.0.GA 2008-12-04 14:39 304˙236 hibernate-search.jar 3.1.0.GA 2008-09-10 14:01 62˙574 hibernate-validator.jar 3.1.0.GA 2008-09-10 13:27 2˙766˙130 hibernate.jar from hibernate-distribution-3.3.1.GA-dist 2008-06-13 13:09 13˙236 jta.jar 1.1 (from hibernate-distribution-3.3.1.GA-dist) 2008-12-04 14:41 818˙961 lucene-core.jar 2.4.0 701827 - 2008-10-05 16:44:37 2008-08-19 20:40 17˙384 slf4j-api.jar 1.5.2 If you wish - I can attach a file with my oryginal jar - but it would be a realy big file ;-)