[hibernate-issues] [Hibernate-JIRA] Created: (HHH-5133) Refresh causes assertion failure on OneToMany (cascaded) property with new members

[Ramon Casha (JIRA)]

Refresh causes assertion failure on OneToMany (cascaded) property with new members
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                 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)

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