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Home » Modeling » EMF » [Teneo] Hibernate refresh failed with parent/child relationship
[Teneo] Hibernate refresh failed with parent/child relationship [message #431740] Thu, 23 July 2009 13:22 Go to next message
koloale is currently offline koloaleFriend
Messages: 41
Registered: July 2009
Member
Hello!
I have the following model with parent/child relationship:

public interface ColocationGroup extends EObject {
/**
@model id="true" annotation="teneo.jpa appinfo='@Id
@GeneratedValue(strategy=SEQUENCE, generator=\"ColoGroupGen\")'"
*/
Long getId();

/**
@model opposite="parent" containment="true" annotation="teneo.jpa
appinfo='@OneToMany(fetch=EAGER)\r\n@Cascade({PERSIST, DELETE, REMOVE,
LOCK, REPLICATE, EVICT, REFRESH, DELETE_ORPHAN})'"
*/
EList<Colocation> getColocation();

}

public interface Colocation extends EObject {
/**
@model id="true"
*/
Long getId();

/**
@model opposite="colocation" transient="false" annotation="teneo.jpa
appinfo='@ManyToOne(fetch=EAGER)'"
*/
ColocationGroup getParent();
}

The following test code:

@Test
public void testRefresh() {
ColocationGroup parent =
ColocationFactory.eINSTANCE.createColocationGroup();

Colocation colo = ColocationFactory.eINSTANCE.createColocation();
parent.getColocation().add(colo);
sessionFactory.getCurrentSession().save(parent);
sessionFactory.getCurrentSession().save(colo);
sessionFactory.getCurrentSession().flush();
sessionFactory.getCurrentSession().clear();

sessionFactory.getCurrentSession().refresh(parent);
}

java.util.ConcurrentModificationException
at java.util.AbstractList$Itr.checkForComodification(AbstractLi st.java:372)
at java.util.AbstractList$Itr.next(AbstractList.java:343)
at
org.hibernate.collection.AbstractPersistentCollection$Iterat orProxy.next(AbstractPersistentCollection.java:555)
at org.hibernate.engine.Cascade.cascadeCollectionElements(Casca de.java:296)
at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java: 242)
at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java :219)
at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:16 9)
at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
at
org.hibernate.event.def.DefaultRefreshEventListener.onRefres h(DefaultRefreshEventListener.java:99)
at
org.hibernate.event.def.DefaultRefreshEventListener.onRefres h(DefaultRefreshEventListener.java:39)
at org.hibernate.impl.SessionImpl.fireRefresh(SessionImpl.java: 902)
at org.hibernate.impl.SessionImpl.refresh(SessionImpl.java:886)
at com.phorm.cms.model.dao.GroupDaoTest.testRefresh(GroupDaoTes t.java:97)

It seems that during cascading ColocationGroup.colocation association
'colo' entity is initialized with the new ColocationGroup object
different from 'parent' that cause removing 'colo' form
parent.getColocation() collection that eventually leads to
ConcurrentModificationException exception. Looks like a bug, is there
any way to fix it?

Thank you,
Alexey
Re: [Teneo] Hibernate refresh failed with parent/child relationship [message #431741 is a reply to message #431740] Thu, 23 July 2009 14:47 Go to previous message
Martin Taal is currently offline Martin TaalFriend
Messages: 5468
Registered: July 2009
Senior Member
Hi Alexey,
Hmm, I think I need to debug this, seems like a bi-directional association relation issue.
Can you open a bugzilla with a small test model which reproduces this (and the code below)?

gr. Martin

koloale wrote:
> Hello!
> I have the following model with parent/child relationship:
>
> public interface ColocationGroup extends EObject {
> /**
> @model id="true" annotation="teneo.jpa appinfo='@Id
> @GeneratedValue(strategy=SEQUENCE, generator=\"ColoGroupGen\")'"
> */
> Long getId();
>
> /**
> @model opposite="parent" containment="true" annotation="teneo.jpa
> appinfo='@OneToMany(fetch=EAGER)\r\n@Cascade({PERSIST, DELETE, REMOVE,
> LOCK, REPLICATE, EVICT, REFRESH, DELETE_ORPHAN})'"
> */
> EList<Colocation> getColocation();
>
> }
>
> public interface Colocation extends EObject {
> /**
> @model id="true"
> */
> Long getId();
>
> /**
> @model opposite="colocation" transient="false" annotation="teneo.jpa
> appinfo='@ManyToOne(fetch=EAGER)'"
> */
> ColocationGroup getParent();
> }
>
> The following test code:
>
> @Test
> public void testRefresh() {
> ColocationGroup parent =
> ColocationFactory.eINSTANCE.createColocationGroup();
>
> Colocation colo = ColocationFactory.eINSTANCE.createColocation();
> parent.getColocation().add(colo);
> sessionFactory.getCurrentSession().save(parent);
> sessionFactory.getCurrentSession().save(colo);
> sessionFactory.getCurrentSession().flush();
> sessionFactory.getCurrentSession().clear();
>
> sessionFactory.getCurrentSession().refresh(parent);
> }
>
> java.util.ConcurrentModificationException
> at
> java.util.AbstractList$Itr.checkForComodification(AbstractLi st.java:372)
> at java.util.AbstractList$Itr.next(AbstractList.java:343)
> at
> org.hibernate.collection.AbstractPersistentCollection$Iterat orProxy.next(AbstractPersistentCollection.java:555)
>
> at
> org.hibernate.engine.Cascade.cascadeCollectionElements(Casca de.java:296)
> at org.hibernate.engine.Cascade.cascadeCollection(Cascade.java: 242)
> at org.hibernate.engine.Cascade.cascadeAssociation(Cascade.java :219)
> at org.hibernate.engine.Cascade.cascadeProperty(Cascade.java:16 9)
> at org.hibernate.engine.Cascade.cascade(Cascade.java:130)
> at
> org.hibernate.event.def.DefaultRefreshEventListener.onRefres h(DefaultRefreshEventListener.java:99)
>
> at
> org.hibernate.event.def.DefaultRefreshEventListener.onRefres h(DefaultRefreshEventListener.java:39)
>
> at org.hibernate.impl.SessionImpl.fireRefresh(SessionImpl.java: 902)
> at org.hibernate.impl.SessionImpl.refresh(SessionImpl.java:886)
> at
> com.phorm.cms.model.dao.GroupDaoTest.testRefresh(GroupDaoTes t.java:97)
>
> It seems that during cascading ColocationGroup.colocation association
> 'colo' entity is initialized with the new ColocationGroup object
> different from 'parent' that cause removing 'colo' form
> parent.getColocation() collection that eventually leads to
> ConcurrentModificationException exception. Looks like a bug, is there
> any way to fix it?
>
> Thank you,
> Alexey


--

With Regards, Martin Taal

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