MappedSuperclass + M:N relation + PostUpdateListener = AssertionFailure: collection [xyz] was not processed by flush() ---------------------------------------------------------------------------------------------------------------------- Key: HHH-2751 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2751 Project: Hibernate3 Issue Type: Bug Affects Versions: 3.2.4.sp1, 3.2.4, 3.2.3, 3.2.2, 3.2.1 Environment: Windows-XP, Jboss 4.2 GA, Hibernate 3.2.1GA, EJB3 Reporter: S.Schnabl Attachments: Hibernate-TestCase.rar For more details see the attached testcase. I'm sorry, but in the short of time i only got a testcase for jboss-server 4.2. Please deploy the server.ear from /release-directory and then call the /src/client/TestCaseClient.java. Explanation: I have two entities A.class and B.class defined, both inheriting from an common (empty) abstract MappedSuperclass. A and B having a m:n relation between each other. Furthermore there is an PostUpdateListener, which iterates through all properties of updated entities. Testcase: Both entities are linked with each (m:n), now i do an update of a simple property of entity A --> MyPostUpdateListener will be called, which iterates through each property of the updated entity(ies). In case of this property was a collection (= property of the m:n relation), the listener furthermore iterates through this collection and get the id of each object in the collection. Doing so will raise following exception : Caused by: org.hibernate.AssertionFailure: collection [com.qualitype.testcase.server.ejb.entity.EntityB.entitiesOfA] was not processed by flush() at org.hibernate.engine.CollectionEntry.postFlush(CollectionEntry.java:205) at org.hibernate.event.def.AbstractFlushingEventListener.postFlush(AbstractFlushingEventListener.java:333) at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:28) at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:1000) at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:338) at org.hibernate.ejb.AbstractEntityManagerImpl$1.beforeCompletion(AbstractEntityManagerImpl.java:515) ... 29 more Summarized these error will only occur, in case we are inherating from a mappedSuperClass, having a m:n relation and having the listener touching the collection-elements. But these scenario isn'n very uncommon. We are using hibernate-event listener system for auditing-purposes, so you should understand that touching ever (element in the) collectin is necessary for audit-purposes. Seems for me like a bug. Need this fixed asap ... -- 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