Hi, I’ve encountered a rather odd behaviour I can’t explain.
I’ve got a class that is referenced from various other classes via ManyToOne associations. Now I would like to load these Lazily. However, if I set the fetch type to lazy, I get an org.hibernate.HibernateException: HHH000142: Bytecode enhancement failed
(stacktrace below). Eagerly is no problem. I can’t work out what I am doing wrong. Any ideas as to what the problem could be?
Thanks a lot!
Stack trace:
Exception in thread "main" javax.persistence.PersistenceException: org.hibernate.HibernateException: HHH000142: Bytecode enhancement failed: xxxxx-my-problematic-class-xxxxx
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:154)
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:181)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1514)
at org.hibernate.query.internal.AbstractProducedQuery.getSingleResult(AbstractProducedQuery.java:1553)
at [...]
at org.hibernate.proxy.pojo.bytebuddy.ByteBuddyProxyFactory.getProxy(ByteBuddyProxyFactory.java:97)
at org.hibernate.tuple.entity.AbstractEntityTuplizer.createProxy(AbstractEntityTuplizer.java:701)
at org.hibernate.persister.entity.AbstractEntityPersister.createProxy(AbstractEntityPersister.java:4791)
at org.hibernate.event.internal.DefaultLoadEventListener.createProxyIfNecessary(DefaultLoadEventListener.java:362)
at org.hibernate.event.internal.DefaultLoadEventListener.proxyOrLoad(DefaultLoadEventListener.java:277)
at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:124)
at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:92)
at org.hibernate.internal.SessionImpl.fireLoad(SessionImpl.java:1257)
at org.hibernate.internal.SessionImpl.internalLoad(SessionImpl.java:1140)
at org.hibernate.type.EntityType.resolveIdentifier(EntityType.java:682)
at org.hibernate.type.EntityType.resolve(EntityType.java:464)
at org.hibernate.type.ManyToOneType.resolve(ManyToOneType.java:239)
at org.hibernate.type.EntityType.resolve(EntityType.java:457)
at org.hibernate.type.ComponentType.resolve(ComponentType.java:688)
at org.hibernate.type.Type.resolve(Type.java:487)
at org.hibernate.engine.internal.TwoPhaseLoad.doInitializeEntity(TwoPhaseLoad.java:172)
at org.hibernate.engine.internal.TwoPhaseLoad.initializeEntity(TwoPhaseLoad.java:129)
at org.hibernate.loader.Loader.initializeEntitiesAndCollections(Loader.java:1151)
at org.hibernate.loader.Loader.processResultSet(Loader.java:1010)
at org.hibernate.loader.Loader.doQuery(Loader.java:948)
at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:340)
at org.hibernate.loader.Loader.doList(Loader.java:2689)
at org.hibernate.loader.Loader.doList(Loader.java:2672)
at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2506)
at org.hibernate.loader.Loader.list(Loader.java:2501)
at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:504)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:395)
at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:220)
at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1508)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1537)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1505)
... 4 more
Caused by: java.lang.InstantiationException: xxxxx-my-problematic-class-xxxxx$HibernateProxy$xJl4Zcl9
at java.lang.Class.newInstance(Class.java:427)
at org.hibernate.proxy.pojo.bytebuddy.ByteBuddyProxyFactory.getProxy(ByteBuddyProxyFactory.java:90)
... 34 more
Caused by: java.lang.NoSuchMethodException: xxxxx-my-problematic-class-xxxxx$HibernateProxy$xJl4Zcl9.<init>()
at java.lang.Class.getConstructor0(Class.java:3082)
at java.lang.Class.newInstance(Class.java:412)
... 35 more