6:45 p.m.
[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2432?page=c...
]
Oleg Gorobets commented on HHH-2432:
------------------------------------
The bug still remains with 3.2.5 and tested with Oracle 10g. I've created test case
to reproduce the bug (see attach).
Seems like Hibernate couldn't determine collection owner when owner entity has a
composite id and collection references owner with property-ref.
To reproduce the bug:
1) auto-create tables with hibernate.hbm2ddl.auto=update option
2) fill in tables with test data (e.g one preference with several values)
3) try to load and read preference values from tables with simple code below (I've
done this with Spring hibernate template).
UserPreference userPreference = (UserPreference)
hibernateTemplate.loadAll(UserPreference.class).get(0);
System.out.println(userPreference.getValues());
Reading preference values will throw an exception:
org.hibernate.PropertyAccessException: could not get a field value by reflection getter of
org.sibutu.kernel.security.entity.UserPreference$Id.userId
at
org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:35)
at
org.hibernate.tuple.component.AbstractComponentTuplizer.getPropertyValue(AbstractComponentTuplizer.java:64)
at
org.hibernate.tuple.component.AbstractComponentTuplizer.getPropertyValues(AbstractComponentTuplizer.java:70)
at
org.hibernate.tuple.component.PojoComponentTuplizer.getPropertyValues(PojoComponentTuplizer.java:86)
at org.hibernate.type.ComponentType.getPropertyValues(ComponentType.java:353)
at org.hibernate.type.ComponentType.getHashCode(ComponentType.java:184)
at org.hibernate.engine.EntityKey.generateHashCode(EntityKey.java:104)
at org.hibernate.engine.EntityKey.<init>(EntityKey.java:48)
at
org.hibernate.engine.StatefulPersistenceContext.getCollectionOwner(StatefulPersistenceContext.java:678)
at org.hibernate.loader.Loader.readCollectionElement(Loader.java:993)
at org.hibernate.loader.Loader.readCollectionElements(Loader.java:646)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:591)
at org.hibernate.loader.Loader.doQuery(Loader.java:701)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
at org.hibernate.loader.Loader.loadCollection(Loader.java:1994)
at org.hibernate.loader.collection.CollectionLoader.initialize(CollectionLoader.java:36)
at
org.hibernate.persister.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:565)
at
org.hibernate.event.def.DefaultInitializeCollectionEventListener.onInitializeCollection(DefaultInitializeCollectionEventListener.java:60)
at org.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:1716)
at
org.hibernate.collection.AbstractPersistentCollection.forceInitialization(AbstractPersistentCollection.java:454)
at
org.hibernate.engine.StatefulPersistenceContext.initializeNonLazyCollections(StatefulPersistenceContext.java:797)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:241)
at org.hibernate.loader.Loader.doList(Loader.java:2220)
at org.hibernate.loader.Loader.listUsingQueryCache(Loader.java:2136)
at org.hibernate.loader.Loader.list(Loader.java:2096)
at org.hibernate.loader.criteria.CriteriaLoader.list(CriteriaLoader.java:94)
at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1569)
at org.hibernate.impl.CriteriaImpl.list(CriteriaImpl.java:283)
at
org.springframework.orm.hibernate3.HibernateTemplate$5.doInHibernate(HibernateTemplate.java:520)
at
org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:366)
at
org.springframework.orm.hibernate3.HibernateTemplate.loadAll(HibernateTemplate.java:516)
...
Caused by: java.lang.IllegalArgumentException
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(Unknown Source)
at sun.reflect.UnsafeObjectFieldAccessorImpl.get(Unknown Source)
at java.lang.reflect.Field.get(Unknown Source)
at
org.hibernate.property.DirectPropertyAccessor$DirectGetter.get(DirectPropertyAccessor.java:32)
... 33 more
After some investigation:
When Loader class tries to get owner of collection with
owner = persistenceContext.getCollectionOwner( collectionRowKey, persister );
at org.hibernate.loader.Loader.readCollectionElement(Loader.java:993)
it passes Long value (which is part of a primary key of AA_USER_PR_VALUES table) as
collectionRowKey and then AbstractComponentTuplizer applies composite-id's getters
(getUserId(),getKey()) on this Long value causing the exception
at
org.hibernate.tuple.component.AbstractComponentTuplizer.getPropertyValue(AbstractComponentTuplizer.java:64)
Collection Mapping via "property-ref" on non-pk-column
crashes
--------------------------------------------------------------
Key: HHH-2432
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2432
Project: Hibernate3
Issue Type: Bug
Components: core
Environment: 3.2.2, Sybase DB
Reporter: Stefan Krinkel
Hi,
when using the following example, Hibernate attempts to pull a "getTownId()" on
an Integer!
2 Tables, Village and Councillor. Village has a comp. ID (TownId, VillageId), Councillor
uses
just the TownId-Part. To accomplish that, TOWN_ID is mapped twice (first in comp.key,
second
as "townCode"), to be able to do a 'property-ref'.
When doing an ordinary "village.getCouncillors()" there's an
IllegalArgumentException which
roots to BasicPropertyAccessor.java:145
public Object get(Object target) throws HibernateException {
try {
return method.invoke(target, null);
}
Here target is (Integer) townId and method is "VillageId.getTownId".
<id name="id" type="integer">
<column name="COUNCILLOR_ID" />
<generator class="identity"/>
</id>
<property name="TOWN" type="integer" >
<column name="TOWN_ID" not-null="true" />
</property>
==============================================
<composite-id name="VillageId" class="Table1Id">
<key-property name="townId" type="integer">
<column name="TOWN_ID" />
</key-property>
<key-property name="villageId" type="integer">
<column name="VILLAGE_ID" />
</key-property>
</composite-id>
<property name="townCode" type="integer" insert="false"
update="false">
<column name="TOWN_ID" />
</property>
<bag name="councillors" outer-join="false"
inverse="false" >
<key property-ref="townCode">
<column name="TOWN_ID" not-null="true" />
</key>
<one-to-many class="COUNCILLOR" />
</bag>
Needless to say, it's a legacy database, so wildly changing tables is out of question
for me, it has to
work with hibernate.
Thanks
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