[hibernate-dev] Null-Pointer Exception with 5.2.14
Christian Beikov
christian.beikov at gmail.com
Mon Mar 5 07:20:58 EST 2018
I have a reproducer as well and have a partial fix already. Just doing some
more testing now to make sure some other edge cases I discovered are
handled properly.
Am 05.03.2018 13:08 schrieb "Petar Tahchiev" <paranoiabla at gmail.com>:
> I managed to reproduce it. Here's the bug: https://hibernate.atlassian.
> net/browse/HHH-12354 and here is the project to reproduce it:
> https://github.com/ptahchiev/hibernate-test-case-templates/tree/nlp
>
> 2018-03-01 10:49 GMT+02:00 Vlad Mihalcea <mihalcea.vlad at gmail.com>:
>
>> Hi Petar,
>>
>> You can use this template:
>>
>> http://in.relation.to/2016/01/14/hibernate-jpa-test-case-template/
>>
>> to create a test case that replicates the issue. You don't need to
>> provide all entities,
>> just the 4 entities that build that hierarchy you have mentioned in your
>> email.
>>
>> If you can replicate it, please open a Jira issue and attach the test
>> case so that it's easier
>> to investigate the cause and provide a fix.
>>
>> Thanks,
>> Vlad
>>
>> On Thu, Mar 1, 2018 at 10:41 AM, Petar Tahchiev <paranoiabla at gmail.com>
>> wrote:
>>
>>> Hi Christian,
>>>
>>> My model has more than 250 entities big. Here's the code that throws the
>>> NLP:
>>>
>>> Class<?> c1 = clazz1.getMappedClass();
>>> Class<?> c2 = commonPersistentClass.getMappedClass();
>>> MappedSuperclass commonMappedSuperclass = null;
>>>
>>> // First we traverse up the clazz2/commonPersistentClass super types
>>> until we find a common type
>>> while ( !c2.isAssignableFrom( c1 ) ) {
>>> if ( commonPersistentClass == null) {
>>> if ( commonMappedSuperclass.getSuperPersistentClass() == null )
>>> { // <------------------------ NLPEX happens here!!!!!!
>>> commonMappedSuperclass =
>>> commonMappedSuperclass.getSuperMappedSuperclass();
>>> commonPersistentClass = null;
>>> }
>>> else {
>>> commonPersistentClass =
>>> commonMappedSuperclass.getSuperPersistentClass();
>>> commonMappedSuperclass = null;
>>> }
>>> }
>>> else {
>>> if ( commonPersistentClass.getSuperclass() == null ) {
>>> commonMappedSuperclass =
>>> commonPersistentClass.getSuperMappedSuperclass();
>>> commonPersistentClass = null;
>>> }
>>> else {
>>> commonPersistentClass = commonPersistentClass.getSuperclass();
>>> commonMappedSuperclass = null;
>>> }
>>> }
>>> }
>>>
>>> As you can see the commonMappedSuperclass is not initialized and stays
>>> null!
>>> At this moment c1 is CustomerEntity and c2 is UserGroupEntity. The
>>> hierarchy looks like this:
>>>
>>> Principal
>>> / \
>>> Usergroup User
>>> |
>>> Customer
>>>
>>> HTH
>>>
>>>
>>>
>>> 2018-02-28 21:52 GMT+02:00 Christian Beikov <christian.beikov at gmail.com
>>> >:
>>>
>>> > Hey, I saw the comment on the issue. Thanks for reporting. Could you
>>> > maybe post the model that causes this? I'd need to create a reproducer
>>> > to be able to analyze this further.
>>> >
>>> >
>>> > Mit freundlichen Grüßen,
>>> > ------------------------------------------------------------
>>> ------------
>>> > *Christian Beikov*
>>> > Am 28.02.2018 um 20:11 schrieb Petar Tahchiev:
>>> > > Hi guys,
>>> > > I have this exception with latest 5.2.14 (my project runs fine with
>>> > 5.2.13):
>>> > >
>>> > > Caused by: javax.persistence.PersistenceException: [PersistenceUnit:
>>> > > default] Unable to build Hibernate SessionFactory
>>> > > at
>>> > > org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImp
>>> > l.persistenceException(EntityManagerFactoryBuilderImpl.java:970)
>>> > > at
>>> > > org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderI
>>> mpl.build(
>>> > EntityManagerFactoryBuilderImpl.java:895)
>>> > > at
>>> > > org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceP
>>> > rovider.createContainerEntityManagerFactory(SpringHibernateJ
>>> paPersistenceP
>>> > rovider.java:57)
>>> > > at
>>> > > org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.
>>> > createNativeEntityManagerFactory(LocalContainerEntityManagerFac
>>> > toryBean.java:365)
>>> > > at
>>> > > org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.
>>> > buildNativeEntityManagerFactory(AbstractEntityManagerFactory
>>> Bean.java:387)
>>> > > at
>>> > > org.springframework.orm.jpa.AbstractEntityManagerFactoryBe
>>> > an.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:376)
>>> > > at
>>> > > org.springframework.orm.jpa.LocalContainerEntityManagerFac
>>> > toryBean.afterPropertiesSet(LocalContainerEntityManagerFac
>>> > toryBean.java:341)
>>> > > at
>>> > > org.springframework.beans.factory.support.AbstractAutowireCa
>>> pableBeanFac
>>> > tory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1769)
>>> > > at
>>> > > org.springframework.beans.factory.support.AbstractAutowireCa
>>> pableBeanFac
>>> > tory.initializeBean(AbstractAutowireCapableBeanFactory.java:1706)
>>> > > ... 32 more
>>> > > Caused by: org.hibernate.MappingException: Could not instantiate
>>> > persister
>>> > > org.hibernate.persister.entity.SingleTableEntityPersister
>>> > > at
>>> > > org.hibernate.persister.internal.PersisterFactoryImpl.
>>> > createEntityPersister(PersisterFactoryImpl.java:112)
>>> > > at
>>> > > org.hibernate.persister.internal.PersisterFactoryImpl.
>>> > createEntityPersister(PersisterFactoryImpl.java:77)
>>> > > at
>>> > > org.hibernate.metamodel.internal.MetamodelImpl.
>>> > initialize(MetamodelImpl.java:128)
>>> > > at
>>> > > org.hibernate.internal.SessionFactoryImpl.<init>(
>>> > SessionFactoryImpl.java:300)
>>> > > at
>>> > > org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(
>>> > SessionFactoryBuilderImpl.java:460)
>>> > > at
>>> > > org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderI
>>> mpl.build(
>>> > EntityManagerFactoryBuilderImpl.java:892)
>>> > > ... 39 more
>>> > > Caused by: java.lang.NullPointerException
>>> > > at
>>> > > org.hibernate.persister.entity.AbstractPropertyMapping.
>>> > getSuperCollection(AbstractPropertyMapping.java:285)
>>> > > at
>>> > > org.hibernate.persister.entity.AbstractPropertyMapping.addPr
>>> opertyPath(
>>> > AbstractPropertyMapping.java:198)
>>> > > at
>>> > > org.hibernate.persister.entity.AbstractPropertyMapping.
>>> > initPropertyPaths(AbstractPropertyMapping.java:395)
>>> > > at
>>> > > org.hibernate.persister.entity.AbstractEntityPersister.
>>> > initOrdinaryPropertyPaths(AbstractEntityPersister.java:2300)
>>> > > at
>>> > > org.hibernate.persister.entity.AbstractEntityPersister.
>>> > initPropertyPaths(AbstractEntityPersister.java:2347)
>>> > > at
>>> > > org.hibernate.persister.entity.AbstractEntityPersister.postC
>>> onstruct(
>>> > AbstractEntityPersister.java:3906)
>>> > > at
>>> > > org.hibernate.persister.entity.SingleTableEntityPersister.<init>(
>>> > SingleTableEntityPersister.java:437)
>>> > > at sun.reflect.GeneratedConstructorAccessor94.newInstance(Unkno
>>> wn
>>> > > Source)
>>> > > at
>>> > > sun.reflect.DelegatingConstructorAccessorImpl.newInstance(
>>> > DelegatingConstructorAccessorImpl.java:45)
>>> > > at java.lang.reflect.Constructor.newInstance(Constructor.java:4
>>> 23)
>>> > > at
>>> > > org.hibernate.persister.internal.PersisterFactoryImpl.
>>> > createEntityPersister(PersisterFactoryImpl.java:96)
>>> > > ... 44 more
>>> > >
>>> > >
>>> > >
>>> > >
>>> > >
>>> >
>>> > _______________________________________________
>>> > hibernate-dev mailing list
>>> > hibernate-dev at lists.jboss.org
>>> > https://lists.jboss.org/mailman/listinfo/hibernate-dev
>>>
>>>
>>>
>>>
>>> --
>>> Regards, Petar!
>>> Karlovo, Bulgaria.
>>> ---
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>>> Key Fingerprint: A369 A7EE 61BC 93A3 CDFF 55A5 1965 8550 C311 0611
>>> _______________________________________________
>>> hibernate-dev mailing list
>>> hibernate-dev at lists.jboss.org
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>>>
>>
>>
>
>
> --
> Regards, Petar!
> Karlovo, Bulgaria.
> ---
> Public PGP Key at: http://pgp.mit.edu:11371/pks/lookup?op=get&search=
> 0x19658550C3110611
> Key Fingerprint: A369 A7EE 61BC 93A3 CDFF 55A5 1965 8550 C311 0611
>
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