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via Hibernate JIRA by Kristof Jozsa, 1 year ago
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java.lang.NullPointerException: 	at org.hibernate.engine.EntityEntry.getLoadedValue(EntityEntry.java:141)	at org.hibernate.type.CollectionType.getKeyOfOwner(CollectionType.java:302)	at org.hibernate.engine.Collections.processReachableCollection(Collections.java:137)	at org.hibernate.event.def.FlushVisitor.processCollection(FlushVisitor.java:37)	at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:104)	at org.hibernate.event.def.AbstractVisitor.processValue(AbstractVisitor.java:64)	at org.hibernate.event.def.AbstractVisitor.processEntityPropertyValues(AbstractVisitor.java:58)	at org.hibernate.event.def.DefaultFlushEntityEventListener.onFlushEntity(DefaultFlushEntityEventListener.java:198)	at org.hibernate.event.def.AbstractFlushingEventListener.flushEntities(AbstractFlushingEventListener.java:190)	at org.hibernate.event.def.AbstractFlushingEventListener.flushEverythingToExecutions(AbstractFlushingEventListener.java:70)	at org.hibernate.event.def.DefaultFlushEventListener.onFlush(DefaultFlushEventListener.java:26)	at org.hibernate.impl.SessionImpl.flush(SessionImpl.java:730)	at org.hibernate.impl.SessionImpl.managedFlush(SessionImpl.java:324)	at org.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:86)