Merging a persistent object leads to cascading failure in collections --------------------------------------------------------------------- Key: HHH-2373 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2373 Project: Hibernate3 Type: Bug Components: core Versions: 3.2.1 Reporter: Emmanuel Bernard class Empire { ... @OneToMany(cascade.ALL) public Set<Colony> colonies; } Then roman = (Empire) em.get( Empire.class, roman.getId() ); Colony gaule = new Colony(); roman.getColonies().add(gaule); em.merge( roman ); //If commented, will work em.flush(); em.clear(); roman =(Empire) em.get(Empire.class, roman.getId() ); assertEquals( 1, roman.getColonies().size() ); I believe the issue is about having a persistent copy of gaule (according to the merge API), not part of roman.getColonies() (colonies containing the transient gaule object) -- 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