Hi Vlad, I have created the following pull request with the test case: https://github.com/hibernate/hibernate-orm/pull/1786
Thanks, Marcello On 8 February 2017 at 15:35, Vlad Mihalcea <mihalcea.v...@gmail.com> wrote: > Hi, > > You can send us a Pull Request on GitHub with a test case that replicates > it, so we can discuss and integrate it. > > Vlad > > On Wed, Feb 8, 2017 at 10:11 PM, Marcello Romano <marcell...@gmail.com> > wrote: > >> Hi, >> >> A one-to-many association is causing Hibernate to >> throw the following exception when loading an entity via >> Session.get(domainClass, identifier), under the following conditions: >> >> 1. the association collection is annotated with @Fetch(FetchMode.JOIN) >> 2. the association's join column is referencing a non-primary key of the >> owning entity >> 3. the association's join column value is referencing a non-existing >> record >> of the associated table (the "many" side). >> >> Caused by: org.hibernate.property.access.spi.PropertyAccessException: >> Error >> accessing field [protected java.lang.Long ...] by reflection for >> persistent >> property [...] : 1GBE4E1E04 >> at >> org.hibernate.property.access.spi.GetterFieldImpl.get(Getter >> FieldImpl.java:43) >> at >> org.hibernate.tuple.component.AbstractComponentTuplizer.getP >> ropertyValue(AbstractComponentTuplizer.java:58) >> at org.hibernate.type.ComponentType.getPropertyValue(ComponentT >> ype.java:419) >> at org.hibernate.type.ComponentType.getHashCode(ComponentType.java:242) >> at >> org.hibernate.engine.spi.CollectionKey.generateHashCode(Coll >> ectionKey.java:64) >> at org.hibernate.engine.spi.CollectionKey.<init>(CollectionKey.java:58) >> at org.hibernate.engine.spi.CollectionKey.<init>(CollectionKey.java:43) >> at >> org.hibernate.engine.loading.internal.CollectionLoadContext. >> getLoadingCollection(CollectionLoadContext.java:95) >> at >> org.hibernate.loader.plan.exec.process.internal.CollectionRe >> ferenceInitializerImpl.finishUpRow(CollectionReferenc >> eInitializerImpl.java:105) >> at >> org.hibernate.loader.plan.exec.process.internal.AbstractRowR >> eader.readRow(AbstractRowReader.java:121) >> at >> org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetai >> ls$EntityLoaderRowReader.readRow(EntityLoadQueryDetails.java:239) >> at >> org.hibernate.loader.plan.exec.process.internal.ResultSetPro >> cessorImpl.extractResults(ResultSetProcessorImpl.java:122) >> at >> org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBase >> dLoader.executeLoad(AbstractLoadPlanBasedLoader.java:122) >> at >> org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBase >> dLoader.executeLoad(AbstractLoadPlanBasedLoader.java:86) >> at >> org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntity >> Loader.load(AbstractLoadPlanBasedEntityLoader.java:167) >> at >> org.hibernate.persister.entity.AbstractEntityPersister.load( >> AbstractEntityPersister.java:3967) >> at >> org.hibernate.event.internal.DefaultLoadEventListener.loadFr >> omDatasource(DefaultLoadEventListener.java:508) >> at >> org.hibernate.event.internal.DefaultLoadEventListener.doLoad >> (DefaultLoadEventListener.java:478) >> at >> org.hibernate.event.internal.DefaultLoadEventListener.load(D >> efaultLoadEventListener.java:219) >> at >> org.hibernate.event.internal.DefaultLoadEventListener.proxyO >> rLoad(DefaultLoadEventListener.java:278) >> at >> org.hibernate.event.internal.DefaultLoadEventListener.doOnLo >> ad(DefaultLoadEventListener.java:121) >> at >> org.hibernate.event.internal.DefaultLoadEventListener.onLoad >> (DefaultLoadEventListener.java:89) >> at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1129) >> at org.hibernate.internal.SessionImpl.access$2600(SessionImpl.java:164) >> at >> org.hibernate.internal.SessionImpl$IdentifierLoadAccessImpl. >> load(SessionImpl.java:2696) >> at org.hibernate.internal.SessionImpl.get(SessionImpl.java:975) >> ... >> Caused by: java.lang.IllegalArgumentException: Can not set ... to >> java.lang.String >> at >> sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException( >> UnsafeFieldAccessorImpl.java:164) >> at >> sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException( >> UnsafeFieldAccessorImpl.java:168) >> at >> sun.reflect.UnsafeFieldAccessorImpl.ensureObj(UnsafeFieldAcc >> essorImpl.java:55) >> at >> sun.reflect.UnsafeObjectFieldAccessorImpl.get(UnsafeObjectFi >> eldAccessorImpl.java:36) >> at java.lang.reflect.Field.get(Field.java:379) >> at >> org.hibernate.property.access.spi.GetterFieldImpl.get(Getter >> FieldImpl.java:39) >> ... 44 more >> >> >> The problem is that when initializing the collection, Hibernate is not >> able >> to retrieve the association key value in >> CollectionReferenceInitializerImpl.finishUpRow and will fall back to use >> the entity owner's primary key instead, causing the >> IllegalArgumentException. >> >> We have noticed that there is a related open issue: >> https://hibernate.atlassian.net/browse/HHH-9370 >> >> We have worked around this issue by changing the way optionalKey is >> retrieved in CollectionReferenceInitializerImpl.finishUpRow, >> foreignKeyPropertyName ); >> >> ResultSetProcessingContext.EntityReferenceProcessingState ownerState = >> context.getOwnerProcessingState( (Fetch) collectionReference ); >> Serializable optionalKey = >> collectionReference.getCollectionPersister().getCollectionTy >> pe().getKeyOfOwner(ownerState.getEntityInstance(), >> context.getSession()); >> >> >> Although this seems to work for us, we would like to collaborate to have >> this fixed upstream, if you believe this is actually caused by a bug and >> not by using Hibernate associations in the wrong way. >> >> Thanks, >> Marcello >> _______________________________________________ >> hibernate-dev mailing list >> hibernate-dev@lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/hibernate-dev >> > > _______________________________________________ hibernate-dev mailing list hibernate-dev@lists.jboss.org 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