[hibernate-issues] [Hibernate-JIRA] Created: (HHH-2052) org.hibernate.pretty.MessageHelper.collectionInfoString tries to cast wrong object to String, causes ClassCastException

[Tree 'Huggy Bear' Hugger (JIRA)]

org.hibernate.pretty.MessageHelper.collectionInfoString tries to cast wrong object to String, causes ClassCastException
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         Key: HHH-2052
         URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2052
     Project: Hibernate3
        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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