[
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2052?page=c...
]
Francis commented on HHH-2052:
------------------------------
This happens on 3.2.3, and happens when using a Bag/OneToMany with a reference to
<properties> on both sides (A composite FK is used for the join), of course only
when tracing is enabled.
I think the offending code is here (in MessageHelper):
public static String collectionInfoString(
CollectionPersister persister,
Serializable id,
SessionFactoryImplementor factory) {
StringBuffer s = new StringBuffer();
s.append( '[' );
if ( persister == null ) {
s.append( "<unreferenced>" );
}
else {
s.append( persister.getRole() );
s.append( '#' );
if ( id == null ) {
s.append( "<null>" );
}
else {
// Need to use the identifier type of the collection owner
// since the incoming is value is actually the owner's id.
// Using the collection's key type causes problems with
// property-ref keys...
>>>> s.append(
persister.getOwnerEntityPersister().getIdentifierType().toLoggableString( id, factory ) );
}
}
s.append( ']' );
return s.toString();
Isn't it funny the frequency that there are problems with code that requires an
extensive comment?
Sorry I don't know the internals well enough to come up with a patch.
Thread [main] (Suspended (exception ClassCastException))
StringType.toString(Object) line: 44
StringType(NullableType).toLoggableString(Object, SessionFactoryImplementor) line: 218
MessageHelper.collectionInfoString(CollectionPersister, Serializable,
SessionFactoryImplementor) line: 284
OneToManyLoader(Loader).loadCollection(SessionImplementor, Serializable, Type) line:
1986
OneToManyLoader(CollectionLoader).initialize(Serializable, SessionImplementor) line: 36
OneToManyPersister(AbstractCollectionPersister).initialize(Serializable,
SessionImplementor) line: 565
DefaultInitializeCollectionEventListener.onInitializeCollection(InitializeCollectionEvent)
line: 60
SessionImpl.initializeCollection(PersistentCollection, boolean) line: 1716
PersistentBag(AbstractPersistentCollection).forceInitialization() line: 454
StatefulPersistenceContext.initializeNonLazyCollections() line: 785
QueryLoader(Loader).loadSingleRow(ResultSet, SessionImplementor, QueryParameters,
boolean) line: 294
ScrollableResultsImpl.prepareCurrentRow(boolean) line: 231
ScrollableResultsImpl.next() line: 100
DatabaseReader.parse(InputSource) line: 173
...
org.hibernate.pretty.MessageHelper.collectionInfoString tries to cast
wrong object to String, causes ClassCastException
-----------------------------------------------------------------------------------------------------------------------
Key: HHH-2052
URL:
http://opensource.atlassian.com/projects/hibernate/browse/HHH-2052
Project: Hibernate3
Issue Type: Bug
Reporter: Tree 'Huggy Bear' Hugger
Attachments: bugtest.zip
Debug level logging attempted by MessageHelper falls over when constructing a loggable
string for a mapped collection on the main entity.
Following the code in the stacktrace, I can see that MessageHelper expects the parent key
for the collection relationship to be the primary key, but it is mapped to another field
of a different type via a property-ref. Hence the ClassCastException below.
The work around is to set logging to INFO or higher.
I have also attached a pared-down zip with the maven 2 project containing the mappings
and the unit test which fails.
The following JIRA issue may be the same thing:
http://opensource.atlassian.com/projects/hibernate/browse/ANN-298
The following messages on the Hib forum demonstrate other interest in this issue:
http://forum.hibernate.org/viewtopic.php?t=949913
http://forum.hibernate.org/viewtopic.php?t=956778
http://forum.hibernate.org/viewtopic.php?t=962471
java.lang.ClassCastException: com.nomadsoft.cortex.domain.country.basic.BasicCountry
at org.hibernate.type.StringType.toString(StringType.java:44)
at org.hibernate.type.NullableType.toLoggableString(NullableType.java:168)
at org.hibernate.pretty.MessageHelper.collectionInfoString(MessageHelper.java:284)
at org.hibernate.loader.Loader.readCollectionElement(Loader.java:972)
at org.hibernate.loader.Loader.readCollectionElements(Loader.java:635)
at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:580)
at org.hibernate.loader.Loader.doQuery(Loader.java:689)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:224)
at org.hibernate.loader.Loader.loadEntity(Loader.java:1785)
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:2730)
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:862)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:799)
at org.hibernate.impl.SessionImpl.get(SessionImpl.java:792)
at
org.springframework.orm.hibernate3.HibernateTemplate$1.doInHibernate(HibernateTemplate.java:452)
at
org.springframework.orm.hibernate3.HibernateTemplate.execute(HibernateTemplate.java:366)
at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:446)
at org.springframework.orm.hibernate3.HibernateTemplate.get(HibernateTemplate.java:440)
at
com.nomadsoft.cortex.infrastructure.hibernate.HibernateCountryRepository.getById(HibernateCountryRepository.java:26)
at
com.nomadsoft.cortex.domain.country.basic.BasicCountryService.getCountry(BasicCountryService.java:34)
etc etc
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