javax.persistence.PersistenceException: Unable to build entity manager factory

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    javax.persistence.PersistenceException: Unable to build entity manager factory
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    Stack Overflow | 1 year ago | kobra
    javax.persistence.PersistenceException: Unable to build entity manager factory
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    When specifying a dynamic model mapping (in contrast to a POJO mapping) a NullPointerException is thrown when trying to build the EntityManagerFactory. It seems that Envers is trying to load the non existent POJO class (which is null for a dynamic model mapping). Here is the stack trace: javax.persistence.PersistenceException: Unable to build entity manager factory at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:82) at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:55) at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:63) ... Caused by: java.lang.NullPointerException at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:270) at org.hibernate.annotations.common.util.ReflectHelper.classForName(ReflectHelper.java:60) at org.hibernate.annotations.common.reflection.java.JavaReflectionManager.classForName(JavaReflectionManager.java:138) at org.hibernate.envers.configuration.internal.RevisionInfoConfiguration.configure(RevisionInfoConfiguration.java:324) at org.hibernate.envers.configuration.spi.AuditConfiguration.<init>(AuditConfiguration.java:119) at org.hibernate.envers.configuration.spi.AuditConfiguration.getFor(AuditConfiguration.java:180) at org.hibernate.envers.event.spi.EnversIntegrator.integrate(EnversIntegrator.java:76) at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:310) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1856) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:854) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl$4.perform(EntityManagerFactoryBuilderImpl.java:847) at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.withTccl(ClassLoaderServiceImpl.java:396) at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:846) at org.hibernate.jpa.HibernatePersistenceProvider.createEntityManagerFactory(HibernatePersistenceProvider.java:74) ... 31 more

    Hibernate JIRA | 3 years ago | Felix Feisst
    javax.persistence.PersistenceException: Unable to build entity manager factory

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    Root Cause Analysis

    1. javax.persistence.PersistenceException

      Unable to build entity manager factory

      at org.apache.tools.ant.taskdefs.ExecuteJava.execute()
    2. Ant
      UnknownElement.execute
      1. org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:195)
      2. org.apache.tools.ant.taskdefs.Java.run(Java.java:772)
      3. org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:222)
      4. org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:136)
      5. org.apache.tools.ant.taskdefs.Java.execute(Java.java:109)
      6. org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:293)
      6 frames
    3. Java RT
      Method.invoke
      1. sun.reflect.GeneratedMethodAccessor5.invoke(Unknown Source)
      2. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      3. java.lang.reflect.Method.invoke(Unknown Source)
      3 frames