Refresh causes assertion failure on OneToMany (cascaded) property with new members ---------------------------------------------------------------------------------- Key: HHH-5133 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5133 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.5.1 Environment: Oracle 10g Reporter: Ramon Casha An entity with a OneToMany property (cascade=all) is retrieved from the DB, then a NEW instance is added to the OneToMany property. If you call refresh on the parent it will give an assertion failure because Hibernate tries to refresh the added object although it is not persistent. eg: class Child { } class Parent { @OneToMany(cascade=ALL) List<Child> children; } Parent p = em.find(Parent.class, 1); p.children.add(new Child()); em.refresh(p); This causes: org.hibernate.AssertionFailure: null identifier at org.hibernate.engine.EntityKey.<init>(EntityKey.java:61) at org.hibernate.event.def.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:102) at org.hibernate.impl.SessionImpl.fireRefresh(SessionImpl.java:1117) at org.hibernate.impl.SessionImpl.refresh(SessionImpl.java:1100) at org.hibernate.engine.CascadingAction$3.cascade(CascadingAction.java:203) at org.hibernate.engine.Cascade.cascadeToOne(Cascade.java:392) at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:335) at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:204) at org.hibernate.engine.Cascade.cascadeCollectionElements(Cascade.java:425) at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java:362) at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java:338) at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:204) at org.hibernate.engine.Cascade.cascade(Cascade.java:161) at org.hibernate.event.def.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:127) at org.hibernate.event.def.DefaultRefreshEventListener.onRefresh(DefaultRefreshEventListener.java:62) at org.hibernate.impl.SessionImpl.fireRefresh(SessionImpl.java:1108) at org.hibernate.impl.SessionImpl.refresh(SessionImpl.java:1088) at org.hibernate.ejb.AbstractEntityManagerImpl.refresh(AbstractEntityManagerImpl.java:734) at org.hibernate.ejb.AbstractEntityManagerImpl.refresh(AbstractEntityManagerImpl.java:709) -- 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