[hibernate-issues] [Hibernate-JIRA] Resolved: (HHH-7101) NPE when trying to create EntityManagerFactory

NPE when trying to create EntityManagerFactory ---------------------------------------------- Key: HHH-7101 URL: https://hibernate.onjira.com/browse/HHH-7101 Project: Hibernate ORM Issue Type: Bug Components: core Affects Versions: 4.1.0 Environment: hibernate-jpa-2.0-api:1.0.1-Final; hibernate-core:4.1.0.Final; hibernate-entitymanager:4.1.0.Final Reporter: Michael Nascimento Santos Assignee: Strong Liu Labels: hibernate, jpa2 Fix For: 4.1.3 Attachments: npe4cacheable.zip A NPE is thrown for a simple pure JPA entity annotated with @Cacheable as follows: @Entity @Cacheable public class SampleEntity { @Id @GeneratedValue(strategy=GenerationType.AUTO) private Long id; } When Persistence.createEntityManagerFactory(String) is called and such entity is part of the persistence unit, this produces: java.lang.reflect.InvocationTargetException at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.codehaus.mojo.exec.ExecJavaMojo$1.run(ExecJavaMojo.java:297) at java.lang.Thread.run(Thread.java:662) Caused by: java.lang.NullPointerException at org.hibernate.annotations.CacheConcurrencyStrategy.fromAccessType(CacheConcurrencyStrategy.java:52) at org.hibernate.cfg.AnnotationBinder.determineCacheConcurrencyStrategy(AnnotationBinder.java:1044) at org.hibernate.cfg.AnnotationBinder.buildCacheMock(AnnotationBinder.java:1011) at org.hibernate.cfg.AnnotationBinder.determineCacheSettings(AnnotationBinder.java:968) at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:577) at org.hibernate.cfg.Configuration$MetadataSourceQueue.processAnnotatedClassesQueue(Configuration.java:3431) at org.hibernate.cfg.Configuration$MetadataSourceQueue.processMetadata(Configuration.java:3385) at org.hibernate.cfg.Configuration.secondPassCompile(Configuration.java:1337) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1727) at org.hibernate.ejb.EntityManagerFactoryImpl.<init>(EntityManagerFactoryImpl.java:88) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:904) at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:889) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:56) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) at org.hibernate.test.npe4cacheable.SampleEntity.main(SampleEntity.java:18) ... 6 more Hibernate should either choose some sensible default strategy or produce a clear message indicating the need to set one manually. Attached is a Maven-powered sample with Derby that can be executed with exec:java .