Message Title

After the latest envers classloader changes
HHH-10365 - Karaf feature hibernate-envers fails to create EntityManagerFactory Closed
hibernate is unable to build the SessionFactory for this case:
2016-06-06T12:44:16,834 | ERROR | pa.managed-jpa]) | 7   - org.apache.felix.configadmin   - 1.8.8      | configadmin                      | [org.osgi.service.cm.ManagedService, id=167, bundle=29/mvn:org.apache.aries.jpa/org.apache.aries.jpa.container/2.3.0]: Unexpected problem updating configuration org.apache.aries.jpa.managed-jpa
javax.persistence.PersistenceException: [PersistenceUnit: managed-jpa] Unable to build Hibernate SessionFactory
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.persistenceException(EntityManagerFactoryBuilderImpl.java:961) [123:org.hibernate.core:5.2.0.Final]
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:891) [123:org.hibernate.core:5.2.0.Final]
	at org.hibernate.osgi.OsgiPersistenceProvider.createContainerEntityManagerFactory(OsgiPersistenceProvider.java:96) [125:org.hibernate.osgi:5.2.0.Final]
	at org.apache.aries.jpa.container.impl.ManagedEMF.createAndPublishEMF(ManagedEMF.java:129) [29:org.apache.aries.jpa.container:2.3.0]
	at org.apache.aries.jpa.container.impl.ManagedEMF.updated(ManagedEMF.java:125) [29:org.apache.aries.jpa.container:2.3.0]
	at org.apache.felix.cm.impl.helper.ManagedServiceTracker.updated(ManagedServiceTracker.java:189) [7:org.apache.felix.configadmin:1.8.8]
	at org.apache.felix.cm.impl.helper.ManagedServiceTracker.updateService(ManagedServiceTracker.java:152) [7:org.apache.felix.configadmin:1.8.8]
	at org.apache.felix.cm.impl.helper.ManagedServiceTracker.provideConfiguration(ManagedServiceTracker.java:85) [7:org.apache.felix.configadmin:1.8.8]
	at org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceUpdate.provide(ConfigurationManager.java:1444) [7:org.apache.felix.configadmin:1.8.8]
	at org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceUpdate.run(ConfigurationManager.java:1400) [7:org.apache.felix.configadmin:1.8.8]
	at org.apache.felix.cm.impl.UpdateThread.run0(UpdateThread.java:143) [7:org.apache.felix.configadmin:1.8.8]
	at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:110) [7:org.apache.felix.configadmin:1.8.8]
	at java.lang.Thread.run(Thread.java:745) [?:?]
Caused by: org.hibernate.MappingException: Unable to instantiate custom type: org.hibernate.type.EnumType
	at org.hibernate.type.TypeFactory.custom(TypeFactory.java:207) ~[?:?]
	at org.hibernate.type.TypeFactory.custom(TypeFactory.java:193) ~[?:?]
	at org.hibernate.type.TypeFactory.byClass(TypeFactory.java:107) ~[?:?]
	at org.hibernate.type.TypeResolver.heuristicType(TypeResolver.java:112) ~[?:?]
	at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:401) ~[?:?]
	at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:383) ~[?:?]
	at org.hibernate.mapping.Property.isValid(Property.java:226) ~[?:?]
	at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:595) ~[?:?]
	at org.hibernate.mapping.RootClass.validate(RootClass.java:265) ~[?:?]
	at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:329) ~[?:?]
	at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:475) ~[?:?]
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:888) ~[?:?]
	... 11 more
Caused by: org.hibernate.HibernateException: Enum class not found: org.broken.datatype.DataTypeEnum
	at org.hibernate.type.EnumType.setParameterValues(EnumType.java:108) ~[?:?]
	at org.hibernate.type.TypeFactory.injectParameters(TypeFactory.java:142) ~[?:?]
	at org.hibernate.type.TypeFactory.custom(TypeFactory.java:203) ~[?:?]
	at org.hibernate.type.TypeFactory.custom(TypeFactory.java:193) ~[?:?]
	at org.hibernate.type.TypeFactory.byClass(TypeFactory.java:107) ~[?:?]
	at org.hibernate.type.TypeResolver.heuristicType(TypeResolver.java:112) ~[?:?]
	at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:401) ~[?:?]
	at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:383) ~[?:?]
	at org.hibernate.mapping.Property.isValid(Property.java:226) ~[?:?]
	at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:595) ~[?:?]
	at org.hibernate.mapping.RootClass.validate(RootClass.java:265) ~[?:?]
	at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:329) ~[?:?]
	at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:475) ~[?:?]
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:888) ~[?:?]
	... 11 more
Caused by: java.lang.ClassNotFoundException: org.broken.datatype.DataTypeEnum not found by org.hibernate.core [123]
	at org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation(BundleWiringImpl.java:1574) ~[?:?]
	at org.apache.felix.framework.BundleWiringImpl.access$400(BundleWiringImpl.java:79) ~[?:?]
	at org.apache.felix.framework.BundleWiringImpl$BundleClassLoader.loadClass(BundleWiringImpl.java:2018) ~[?:?]
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ~[?:?]
	at java.lang.Class.forName0(Native Method) ~[?:?]
	at java.lang.Class.forName(Class.java:348) ~[?:?]
	at org.hibernate.internal.util.ReflectHelper.classForName(ReflectHelper.java:151) ~[?:?]
	at org.hibernate.type.EnumType.setParameterValues(EnumType.java:105) ~[?:?]
	at org.hibernate.type.TypeFactory.injectParameters(TypeFactory.java:142) ~[?:?]
	at org.hibernate.type.TypeFactory.custom(TypeFactory.java:203) ~[?:?]
	at org.hibernate.type.TypeFactory.custom(TypeFactory.java:193) ~[?:?]
	at org.hibernate.type.TypeFactory.byClass(TypeFactory.java:107) ~[?:?]
	at org.hibernate.type.TypeResolver.heuristicType(TypeResolver.java:112) ~[?:?]
	at org.hibernate.mapping.SimpleValue.getType(SimpleValue.java:401) ~[?:?]
	at org.hibernate.mapping.SimpleValue.isValid(SimpleValue.java:383) ~[?:?]
	at org.hibernate.mapping.Property.isValid(Property.java:226) ~[?:?]
	at org.hibernate.mapping.PersistentClass.validate(PersistentClass.java:595) ~[?:?]
	at org.hibernate.mapping.RootClass.validate(RootClass.java:265) ~[?:?]
	at org.hibernate.boot.internal.MetadataImpl.validate(MetadataImpl.java:329) ~[?:?]
	at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:475) ~[?:?]
	at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:888) ~[?:?]
	... 11 more
It seems the org.hibernate.core bundle tries to lookup the class DataTypeEnum with the wrong classloader, looking only in it's own bundle and imports, not in the bundle providing the persistence context (managed-jpa in this case, which has the class in it's imports).