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( > GetterFieldImpl.java:43) > at > org.hibernate.tuple.component.AbstractComponentTuplizer.getPropertyValue( > AbstractComponentTuplizer.java:58) > at org.hibernate.type.ComponentType.getPropertyValue( > ComponentType.java:419) > at org.hibernate.type.ComponentType.getHashCode(ComponentType.java:242) > at > org.hibernate.engine.spi.CollectionKey.generateHashCode( > CollectionKey.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. > CollectionReferenceInitializerImpl.finishUpRow( > CollectionReferenceInitializerImpl.java:105) > at > org.hibernate.loader.plan.exec.process.internal.AbstractRowReader.readRow( > AbstractRowReader.java:121) > at > org.hibernate.loader.plan.exec.internal.EntityLoadQueryDetails$ > EntityLoaderRowReader.readRow(EntityLoadQueryDetails.java:239) > at > org.hibernate.loader.plan.exec.process.internal.ResultSetProcessorImpl. > extractResults(ResultSetProcessorImpl.java:122) > at > org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader. > executeLoad(AbstractLoadPlanBasedLoader.java:122) > at > org.hibernate.loader.plan.exec.internal.AbstractLoadPlanBasedLoader. > executeLoad(AbstractLoadPlanBasedLoader.java:86) > at > org.hibernate.loader.entity.plan.AbstractLoadPlanBasedEntityLoader.load( > AbstractLoadPlanBasedEntityLoader.java:167) > at > org.hibernate.persister.entity.AbstractEntityPersister.load( > AbstractEntityPersister.java:3967) > at > org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource( > DefaultLoadEventListener.java:508) > at > org.hibernate.event.internal.DefaultLoadEventListener.doLoad( > DefaultLoadEventListener.java:478) > at > org.hibernate.event.internal.DefaultLoadEventListener.load( > DefaultLoadEventListener.java:219) > at > org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad( > DefaultLoadEventListener.java:278) > at > org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad( > 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.throwSetIllegalArgumentExcepti > on(UnsafeFieldAccessorImpl.java:164) > at > sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentExcepti > on(UnsafeFieldAccessorImpl.java:168) > at > sun.reflect.UnsafeFieldAccessorImpl.ensureObj( > UnsafeFieldAccessorImpl.java:55) > at > sun.reflect.UnsafeObjectFieldAccessorImpl.get( > UnsafeObjectFieldAccessorImpl.java:36) > at java.lang.reflect.Field.get(Field.java:379) > at > org.hibernate.property.access.spi.GetterFieldImpl.get( > GetterFieldImpl.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().getCollectionType(). > 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 https://lists.jboss.org/mailman/listinfo/hibernate-dev
