NullPointerException when updating or deleting multiple entities of same type with non-comparable IDs
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Former user June 21, 2016 at 7:48 PM
Fixed in master, 5.1, and 5.0 branches.
Former user June 21, 2016 at 7:48 PM
This affects all ID types that are not Comparable or contain an ID type that is not Comparable, types such as byte[], Byte[], char[], Character[], and UserType.
The fix only checks for a sorted ExecutableList when hibernate.order_updates=true or hibernate.order_inserts=true.
When hibernate.order_updates=true or hibernate.order_inserts=true, IncomparableComparator.INSTANCE is used for byte[], Byte[], char[], Character[]. If a UserType is used, it must implement Comparable; otherwise ClassCastException will continue to be thrown.
Hack Kampbjørn May 19, 2016 at 9:03 AM
This is not limited to byte arrays, it affects any custom type used as an ID or part of an embededId that does not implement Comparable. The solution was simple just implement Comparable.
Former user May 2, 2016 at 8:38 PM
Yes, this will be fixed in 5.0.10 and 5.1.1, within the next 3 weeks or so.
Alessandro Polverini April 30, 2016 at 5:29 PMEdited
Today this bug hit me hard.
Is there a timeline for a release that fixes this problem?
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If in composite-id is a field of type byte[] then removing more than one entity throws NullPointerException.
it doesnt work on Hibernate 4.3.0.Final, It worked on Hibernate 4.2.8.Final.
EntityManagerFactory emf = Persistence.createEntityManagerFactory("jpaDemo");
EntityManager em = emf.createEntityManager();
EntityTransaction tx = em.getTransaction();
tx.begin();
Query query = em.createQuery("select s from MyEntity s");
List l = query.getResultList();//returns 3 objects
em.remove(l.get(0));
em.remove(l.get(1));//throws exception
java.lang.NullPointerException
at org.hibernate.type.AbstractStandardBasicType.compare(AbstractStandardBasicType.java:221)
at org.hibernate.type.ComponentType.compare(ComponentType.java:230)
at org.hibernate.action.internal.EntityAction.compareTo(EntityAction.java:171)
at org.hibernate.engine.spi.ExecutableList.add(ExecutableList.java:222)
at org.hibernate.engine.spi.ActionQueue.addAction(ActionQueue.java:219)
at org.hibernate.event.internal.DefaultDeleteEventListener.deleteEntity(DefaultDeleteEventListener.java:299)
at org.hibernate.event.internal.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:160)
at org.hibernate.event.internal.DefaultDeleteEventListener.onDelete(DefaultDeleteEventListener.java:73)
at org.hibernate.internal.SessionImpl.fireDelete(SessionImpl.java:916)
at org.hibernate.internal.SessionImpl.delete(SessionImpl.java:892)
at org.hibernate.jpa.spi.AbstractEntityManagerImpl.remove(AbstractEntityManagerImpl.java:1214)
at hibernatetest.Main.test(Main.java:23)
at hibernatetest.Main.main(Main.java:9)