Thread: [Hibernate-issues] [Hibernate-JIRA] Created: (HHH-874) org.hibernate.AssertionFailure: null owner on

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  A new issue has been created in JIRA.

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View the issue:
  http://opensource.atlassian.com/projects/hibernate/browse/HHH-874

Here is an overview of the issue:
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        Key: HHH-874
    Summary: org.hibernate.AssertionFailure: null owner only with EntityMode.DOM4J
       Type: Bug

     Status: Unassigned
   Priority: Major

 Original Estimate: Unknown
 Time Spent: Unknown
  Remaining: Unknown

    Project: Hibernate3
 Components: 
             core
   Versions:
             3.1 beta 2

   Assignee: 
   Reporter: Martin Caslavsky

    Created: Wed, 17 Aug 2005 7:39 AM
    Updated: Wed, 17 Aug 2005 7:39 AM
Environment: Hibernate up to 3.1 beta 2, SQL Server

Description:
ERROR - an assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session)
org.hibernate.AssertionFailure: null owner
	at org.hibernate.collection.PersistentElementHolder.<init>(PersistentElementHolder.java:61)
	at org.hibernate.type.SetType.instantiate(SetType.java:23)
	at org.hibernate.engine.CollectionLoadContext.getLoadingCollection(CollectionLoadContext.java:101)
	at org.hibernate.loader.Loader.readCollectionElement(Loader.java:990)
	at org.hibernate.loader.Loader.readCollectionElements(Loader.java:635)
	at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:579)
	at org.hibernate.loader.Loader.doQuery(Loader.java:689)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:223)
	at org.hibernate.loader.Loader.loadCollection(Loader.java:1916)
	at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:36)
	at org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:520)
	at org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
	at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1555)
	at org.hibernate.type.CollectionType.getCollection(CollectionType.java:501)
	at org.hibernate.type.CollectionType.resolveKey(CollectionType.java:335)
	at org.hibernate.type.CollectionType.resolve(CollectionType.java:329)
	at org.hibernate.engine.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:113)
	at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:842)
	at org.hibernate.loader.Loader.doQuery(Loader.java:717)
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:223)
	at org.hibernate.loader.Loader.loadEntity(Loader.java:1782)
	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:47)
	at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:41)
	at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:2705)
	at org.hibernate.event.def.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:365)
	at org.hibernate.event.def.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:346)
	at org.hibernate.event.def.DefaultLoadEventListener.load(DefaultLoadEventListener.java:123)
	at org.hibernate.event.def.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:177)
	at org.hibernate.event.def.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:87)
	at org.hibernate.impl.SessionImpl.fireLoad(SessionImpl.java:774)
	at org.hibernate.impl.SessionImpl.internalLoad(SessionImpl.java:746)
	at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:266)
	at org.hibernate.type.EntityType.resolve(EntityType.java:303)
	at org.hibernate.type.EntityType.nullSafeGet(EntityType.java:217)
	at org.hibernate.impl.IteratorImpl.postNext(IteratorImpl.java:93)
	at org.hibernate.impl.IteratorImpl.next(IteratorImpl.java:120)
	at ProduktCon.result(ProduktCon.java:42)
	at AbstractCon.go(AbstractCon.java:114)
	at Datacon.main(Datacon.java:31)

ProduktCon.java:
    protected void result() {
        Session session4 = factory.openSession().getSession(EntityMode.DOM4J);

        Query query = session4.createQuery("select p from Produkt as p");
        for (Iterator it = query.iterate(); it.hasNext();) {
            Element e = (Element) it.next(); // LINE 42
        }
    }

Produkt.hbm.xml:
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>

    <class name="Produkt" table="eshop_prod" node="product">
        <id name="produkt" type="string" unsaved-value="any" column="produkt" node="@id"/>
        <property name="cislo" column="Katalogove_cislo" node="@cislo"/>
        <property name="popis" column="popis" node="name"/>
        <property name="poznamka" column="poznamka" node="anotace"/>
        <property name="text" column="text" node="descr"/>
        <property name="zaruka" column="zaruka" node="@zaruka"/>
        <property name="vyrobce" column="vyrobce" node="vyrobce"/>
        <property name="dodavatel" column="dodavatel" node="dodavatel"/>
        <property name="zarazeni" column="zarazeni" node="@zarazeni" />
        <property name="dostupnost" column="Carovy_kod_vlastni" node="@dostupnost" />
        <set name="kategorie" embed-xml="true" node=".">
            <key column="produkt"/>
            <one-to-many class="Kategorie"/>
        </set>
        <set name="related" embed-xml="true" node="." where="typ_souvislosti=0">
            <key column="produkt"/>
            <one-to-many class="Related"/>
        </set>
        <set name="item" embed-xml="true" node=".">
            <key column="vyrobek"/>
            <one-to-many class="Item"/>
        </set>
        <set name="variant" embed-xml="true" node=".">
            <key column="prod_id"/>
            <one-to-many class="Variant"/>
        </set>
    </class>

</hibernate-mapping>

Last executed SQL statement:
Hibernate: select variant0_.prod_id as prod5_1_, variant0_.produkt as produkt1_, variant0_.produkt as produkt4_0_, variant0_.Katalogove_cislo as Katalogove2_4_0_, variant0_.Udaj_1 as Udaj3_4_0_, variant0_.Udaj_2 as Udaj4_4_0_ from data0001.dbo.eshop_variant variant0_ where variant0_.prod_id=?

This error occurs only with EntityMode.DOM4J.
Also when removed <set name="variant" ... > everything works OK.

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Thread: [Hibernate-issues] [Hibernate-JIRA] Created: (HHH-874) org.hibernate.AssertionFailure: null owner on

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