1 2 Previous Next 18 Replies Latest reply on Nov 1, 2010 5:11 AM by Daniel Winz

    hibernate-mapping ClassNotFoundException

    Daniel Winz Newbie

      Hello,

       

      the deployment of a web project with a hibernate-mapping runs into a ClassNotFoundException

       

      2010-09-11 10:15:41,575 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] (HDScanner) Error installing to Start: name=persistence.unit:unitName=#timetracker-persistence state=Create
      javax.persistence.PersistenceException: [PersistenceUnit: timetracker-persistence] class or package not found
          at org.hibernate.ejb.Ejb3Configuration.addNamedAnnotatedClasses(Ejb3Configuration.java:1067)
          ...
      Caused by: java.lang.ClassNotFoundException: timetracker.impl.ProjectImpl from BaseClassLoader@...
      ...
      DEPLOYMENTS IN ERROR:
        Deployment "persistence.unit:unitName=#timetracker-persistence" is in error due to the following reason(s): java.lang.ClassNotFoundException: timetracker.impl.ProjectImpl
      

       

      The class that cannot be found is referenced by my hbm.xml

       

      <?xml version="1.0" encoding="UTF-8"?>
      <!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
      
      <hibernate-mapping auto-import="false">
      
          <class name="timetracker.impl.ProjectImpl" table="`project`">
      
              <id type="long" name="e_id" column="e_id" access="org.eclipse.emf.teneo.hibernate.mapping.identifier.IdentifierPropertyHandler">
                  <meta attribute="syntheticId">true</meta>
                  <generator class="native"/>
              </id>
      
              <property name="bezeichnung" lazy="false" insert="true" update="true" not-null="false" unique="false" type="java.lang.String">
                  <column not-null="false" unique="false" name="`bezeichnung`"/>
              </property>
              
              <property name="nummer" lazy="false" insert="true" update="true" not-null="false" unique="false" type="java.lang.String">
                  <column not-null="false" unique="false" name="`nummer`"/>
              </property>
          </class>
      
      </hibernate-mapping>
      

       

      The class is existing at the deployed war. Why the class cannot be found? May it be caused by wrong class loading order?

       

      Thanks,

      Daniel

        • 1. Re: hibernate-mapping ClassNotFoundException
          Daniel Winz Newbie

          The hbm.xml described above gets processed correctly:

          2010-09-12 12:10:52,790 DEBUG [org.hibernate.cfg.AnnotationConfiguration] (HDScanner) Process hbm files
          2010-09-12 12:10:52,790 INFO  [org.hibernate.cfg.HbmBinder] (HDScanner) Mapping class: timetracker.impl.ProjectImpl -> project
          2010-09-12 12:10:52,790 DEBUG [org.hibernate.cfg.HbmBinder] (HDScanner) Mapped property: e_id -> e_id
          2010-09-12 12:10:52,790 DEBUG [org.hibernate.cfg.HbmBinder] (HDScanner) Mapped property: bezeichnung -> bezeichnung
          2010-09-12 12:10:52,790 DEBUG [org.hibernate.cfg.HbmBinder] (HDScanner) Mapped property: nummer -> nummer

           

          Furthermore the debug log about the startup of the persistence-unit indicates correct classpath settings (root WEB-INF/classes where timetracker.impl.ProjectImpl resides):

          2010-09-12 12:10:52,743 DEBUG [org.hibernate.ejb.Ejb3Configuration] (HDScanner) Processing PersistenceUnitInfo [
               name: timetracker-persistence
               persistence provider classname: org.hibernate.ejb.HibernatePersistence
               classloader: BaseClassLoader@69e49f{vfszip:/D:/Entwicklung/jboss-5.1.0.GA/server/default/deploy/timetracker.war/}
               Temporary classloader: null
               excludeUnlistedClasses: false
               JTA datasource: org.jboss.resource.adapter.jdbc.WrapperDataSource@19f20e5
               Non JTA datasource: null
               Transaction type: JTA
               PU root URL: vfszip:/D:/Entwicklung/jboss-5.1.0.GA/server/default/deploy/timetracker.war/WEB-INF/classes/

           

          BUT, still I get the ClassNotFoundException! Why?

           

          There is a warning that may stick together with the error:

          2010-09-12 12:10:52,759 WARN  [org.hibernate.ejb.Ejb3Configuration] (HDScanner) Persistence provider caller does not implements the EJB3 spec correctly. PersistenceUnitInfo.getNewTempClassLoader() is null.
          • 2. Re: hibernate-mapping ClassNotFoundException
            jaikiran pai Master

            Please post the (exact) entire exception stacktrace. Also post the output of:

             

            jar -tf timetracker.war

             

            And which version of JBoss AS is this? Looking at the logs, it appears to be 5.1.0. Is that right?

             

            Daniel Winz wrote:


            There is a warning that may stick together with the error:

            2010-09-12 12:10:52,759 WARN  [org.hibernate.ejb.Ejb3Configuration] (HDScanner) Persistence provider caller does not implements the EJB3 spec correctly. PersistenceUnitInfo.getNewTempClassLoader() is null.

            You can ignore that log message.

            • 3. Re: hibernate-mapping ClassNotFoundException
              Daniel Winz Newbie

              Yes I am runnning JBoss 5.1.0 AS.

               

              Output of "jar -tf timetracker.war":

               

              META-INF/MANIFEST.MF
              META-INF/
              WEB-INF/
              WEB-INF/classes/
              WEB-INF/classes/META-INF/
              WEB-INF/classes/META-INF/persistence.xml
              WEB-INF/classes/timetracker/
              WEB-INF/classes/timetracker/Operator.java
              WEB-INF/classes/timetracker/Project.java
              WEB-INF/classes/timetracker/TimetrackerFactory.java
              WEB-INF/classes/timetracker/TimetrackerPackage.java
              WEB-INF/classes/timetracker/impl/
              WEB-INF/classes/timetracker/impl/OperatorImpl.java
              WEB-INF/classes/timetracker/impl/ProjectImpl.java
              WEB-INF/classes/timetracker/impl/TimetrackerBean.java
              WEB-INF/classes/timetracker/impl/TimetrackerFactoryImpl.java
              WEB-INF/classes/timetracker/impl/TimetrackerPackageImpl.java
              WEB-INF/classes/timetracker/impl/TimetrackerService.java
              WEB-INF/classes/timetracker/impl/OperatorImpl.class
              WEB-INF/classes/timetracker/impl/ProjectImpl.class
              WEB-INF/classes/timetracker/impl/TimetrackerBean.class
              WEB-INF/classes/timetracker/impl/TimetrackerFactoryImpl.class
              WEB-INF/classes/timetracker/impl/TimetrackerPackageImpl.class
              WEB-INF/classes/timetracker/impl/TimetrackerService.class
              WEB-INF/classes/timetracker/util/
              WEB-INF/classes/timetracker/util/TimetrackerAdapterFactory.java
              WEB-INF/classes/timetracker/util/TimetrackerSwitch.java
              WEB-INF/classes/timetracker/util/TimetrackerAdapterFactory$1.class
              WEB-INF/classes/timetracker/util/TimetrackerAdapterFactory.class
              WEB-INF/classes/timetracker/util/TimetrackerSwitch.class
              WEB-INF/classes/timetracker/validation/
              WEB-INF/classes/timetracker/validation/OperatorValidator.java
              WEB-INF/classes/timetracker/validation/ProjectValidator.java
              WEB-INF/classes/timetracker/validation/OperatorValidator.class
              WEB-INF/classes/timetracker/validation/ProjectValidator.class
              WEB-INF/classes/timetracker/Operator.class
              WEB-INF/classes/timetracker/Project.class
              WEB-INF/classes/timetracker/TimetrackerFactory.class
              WEB-INF/classes/timetracker/TimetrackerPackage$Literals.class
              WEB-INF/classes/timetracker/TimetrackerPackage.class
              WEB-INF/classes/persistence/
              WEB-INF/classes/persistence/TestTimetrackerPersistence.java
              WEB-INF/classes/persistence/TestTimetrackerPersistence.class
              WEB-INF/classes/ProjectImpl.hbm.xml
              WEB-INF/faces-config.xml
              WEB-INF/lib/
              WEB-INF/web.xml
              

               

              Exception stacktrace:

               

              2010-09-12 12:10:52,790 ERROR [org.jboss.kernel.plugins.dependency.AbstractKernelController] (HDScanner) Error installing to Start: name=persistence.unit:unitName=#timetracker-persistence state=Create
              org.hibernate.MappingException: entity class not found: ProjectImpl
                  at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:165)
                  at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:847)
                  at org.hibernate.ejb.Ejb3Configuration.configure(Ejb3Configuration.java:385)
                  at org.hibernate.ejb.HibernatePersistence.createContainerEntityManagerFactory(HibernatePersistence.java:126)
                  at org.jboss.jpa.deployment.PersistenceUnitDeployment.start(PersistenceUnitDeployment.java:301)
                  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.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59)
                  at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150)
                  at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)
                  at org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:241)
                  at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:47)
                  at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerContextAction.java:109)
                  at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:70)
                  at org.jboss.kernel.plugins.dependency.LifecycleAction.installActionInternal(LifecycleAction.java:221)
                  at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54)
                  at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42)
                  at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
                  at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
                  at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
                  at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
                  at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
                  at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
                  at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
                  at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
                  at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:774)
                  at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:540)
                  at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:121)
                  at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:51)
                  at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
                  at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:50)
                  at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:171)
                  at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1439)
                  at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1157)
                  at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1178)
                  at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1098)
                  at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
                  at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1631)
                  at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:934)
                  at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
                  at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:984)
                  at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:822)
                  at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:553)
                  at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:781)
                  at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:702)
                  at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
                  at org.jboss.system.server.profileservice.hotdeploy.HDScanner.scan(HDScanner.java:362)
                  at org.jboss.system.server.profileservice.hotdeploy.HDScanner.run(HDScanner.java:255)
                  at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:441)
                  at java.util.concurrent.FutureTask$Sync.innerRunAndReset(FutureTask.java:317)
                  at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:150)
                  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$101(ScheduledThreadPoolExecutor.java:98)
                  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.runPeriodic(ScheduledThreadPoolExecutor.java:181)
                  at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:205)
                  at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
                  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
                  at java.lang.Thread.run(Thread.java:619)
              Caused by: java.lang.ClassNotFoundException: timetracker.impl.ProjectImpl from BaseClassLoader@5b38d6{VFSClassLoaderPolicy@f0a755{name=vfsfile:/D:/Entwicklung/jboss-5.1.0.GA/server/default/conf/jboss-service.xml domain=ClassLoaderDomain@17082d8{name=DefaultDomain parentPolicy=BEFORE parent=org.jboss.bootstrap.NoAnnotationURLClassLoader@14c1103} roots=[MemoryContextHandler@24761471[path= context=vfsmemory://5c4o02s-q8vka-gdzqrt41-1-gdzqrxqv-7 real=vfsmemory://5c4o02s-q8vka-gdzqrt41-1-gdzqrxqv-7], DelegatingHandler@23991545[path=hibernate-annotations.jar context=file:/D:/Entwicklung/jboss-5.1.0.GA/server/default/lib/
              
              • 4. Re: hibernate-mapping ClassNotFoundException
                jaikiran pai Master

                Daniel Winz wrote:

                 

                Caused by: java.lang.ClassNotFoundException: timetracker.impl.ProjectImpl from BaseClassLoader@5b38d6{VFSClassLoaderPolicy@f0a755{name=vfsfile:/D:/Entwicklung/jboss-5.1.0.GA/server/default/conf/jboss-service.xml domain=ClassLoaderDomain@17082d8{name=DefaultDomain parentPolicy=BEFORE parent=org.jboss.bootstrap.NoAnnotationURLClassLoader@14c1103} roots=[MemoryContextHandler@24761471[path= context=vfsmemory://5c4o02s-q8vka-gdzqrt41-1-gdzqrxqv-7 real=vfsmemory://5c4o02s-q8vka-gdzqrt41-1-gdzqrxqv-7], DelegatingHandler@23991545[path=hibernate-annotations.jar context=file:/D:/Entwicklung/jboss-5.1.0.GA/server/default/lib/

                That last line doesn't look right. It looks like it's not picking up the .war classloader. Can you please post (or attach, if the stacktrace and logs are big) the entire exception stacktrace?

                • 5. Re: hibernate-mapping ClassNotFoundException
                  Daniel Winz Newbie

                  I've just recognized that I now get a

                  org.hibernate.MappingException

                  instead of the initial

                  javax.persistence.PersistenceException

                   

                  Meanwhile I added "Class-Path: WEB-INF/classes" to the  META-INF/MANIFEST.MF.

                  • 6. Re: hibernate-mapping ClassNotFoundException
                    Daniel Winz Newbie

                    Find attached the entire log.

                    • 7. Re: hibernate-mapping ClassNotFoundException
                      Daniel Winz Newbie

                      Anyway both exceptions (MappingException and PersistenceException) are

                      Caused by: java.lang.ClassNotFoundException: timetracker.impl.ProjectImpl from BaseClassLoader@...
                      
                      • 8. Re: hibernate-mapping ClassNotFoundException
                        jaikiran pai Master
                        2010-09-12 12:09:02,358 INFO  [org.hibernate.ejb.Version] (main) Hibernate EntityManager 3.2.0.GA
                        2010-09-12 12:09:02,436 INFO  [org.hibernate.cfg.annotations.Version] (main) Hibernate Annotations 3.2.0.GA
                        2010-09-12 12:09:02,451 INFO  [org.hibernate.cfg.Environment] (main) Hibernate 3.3.1.GA

                         

                        Are you packaging your own version of Hibernate or have you changed the version that's available in JBoss AS? The Hibernate entitymanager and Hibernate annotations versions, that are logged, aren't the same which are shipped by default in AS.

                        • 9. Re: hibernate-mapping ClassNotFoundException
                          Daniel Winz Newbie

                          I newly installed jboss to get a clean environment, now a newer version of hibernate is logged, but the error resists ...

                           

                          2010-09-13 11:14:49,351 INFO  [org.jboss.jpa.deployment.PersistenceUnitDeployment] (main) Starting persistence unit persistence.unit:unitName=#timetracker-persistence
                          2010-09-13 11:14:49,468 INFO  [org.hibernate.cfg.annotations.Version] (main) Hibernate Annotations 3.4.0.GA
                          2010-09-13 11:14:49,501 INFO  [org.hibernate.cfg.Environment] (main) Hibernate 3.3.1.GA
                          2010-09-13 11:14:49,514 INFO  [org.hibernate.cfg.Environment] (main) hibernate.properties not found
                          2010-09-13 11:14:49,524 INFO  [org.hibernate.cfg.Environment] (main) Bytecode provider name : javassist
                          2010-09-13 11:14:49,539 INFO  [org.hibernate.cfg.Environment] (main) using JDK 1.4 java.sql.Timestamp handling
                          2010-09-13 11:14:49,724 INFO  [org.hibernate.annotations.common.Version] (main) Hibernate Commons Annotations 3.1.0.GA
                          2010-09-13 11:14:49,738 INFO  [org.hibernate.ejb.Version] (main) Hibernate EntityManager 3.4.0.GA
                          2010-09-13 11:14:49,803 INFO  [org.hibernate.ejb.Ejb3Configuration] (main) Processing PersistenceUnitInfo [
                              name: timetracker-persistence
                              ...]
                          2010-09-13 11:14:49,890 WARN  [org.hibernate.ejb.Ejb3Configuration] (main) Persistence provider caller does not implement the EJB3 spec correctly. PersistenceUnitInfo.getNewTempClassLoader() is null.
                          2010-09-13 11:14:50,050 INFO  [org.hibernate.cfg.HbmBinder] (main) Mapping class: Project -> project
                          2010-09-13 11:14:50,304 INFO  [org.hibernate.cfg.HbmBinder] (main) Mapping class: Operator -> operator
                          2010-09-13 11:14:50,308 INFO  [org.hibernate.cfg.HbmBinder] (main) Mapping collection: Operator.project -> operator_project
                          2010-09-13 11:14:50,394 WARN  [org.hibernate.cfg.AnnotationConfiguration] (main) Unable to apply constraints on DDL for timetracker.impl.OperatorImpl
                          java.lang.ClassNotFoundException: timetracker.impl.OperatorImpl from BaseClassLoader@1dd040a{VFSClassLoaderPolicy@134329b{name=vfsfile:/D:/Entwicklung/jboss-5.1.0.GA/server/default/conf/jboss-service.xml domain=ClassLoaderDomain@19e733e{name=DefaultDomain
                          
                          • 10. Re: hibernate-mapping ClassNotFoundException
                            jaikiran pai Master

                            Entire logs please.

                            • 12. Re: hibernate-mapping ClassNotFoundException
                              Daniel Winz Newbie

                              I've extended log4j settings to DEBUG level for hibernate. Find attached the deployement log.

                               

                              If I interpret right the classloader that is initially provided for the war (BaseClassLoader@1161d05) differs from the one that tries to load the classes OperatorImpl and ProjectImpl (BaseClassLoader@12bed82) ...

                               

                              2010-09-13 19:53:08,160 DEBUG [org.hibernate.ejb.Ejb3Configuration] (HDScanner) Processing PersistenceUnitInfo [
                                  name: timetracker-persistence
                                  persistence provider classname: org.hibernate.ejb.HibernatePersistence
                                  classloader: BaseClassLoader@1161d05{vfszip:/D:/Entwicklung/jboss-5.1.0.GA/server/default/deploy/timetracker.war/}
                                  Temporary classloader: null
                                  excludeUnlistedClasses: false
                                  JTA datasource: org.jboss.resource.adapter.jdbc.WrapperDataSource@34ab3e
                                  Non JTA datasource: null
                                  Transaction type: JTA
                                  PU root URL: vfszip:/D:/Entwicklung/jboss-5.1.0.GA/server/default/deploy/timetracker.war/WEB-INF/classes/
                                  Jar files URLs []
                                  Managed classes names []
                                  Mapping files names []
                                  Properties [
                                      hibernate.connection.autocommit: false
                                      hibernate.jndi.java.naming.factory.url.pkgs: org.jboss.naming:org.jnp.interfaces
                                      hibernate.cache.provider_class: org.hibernate.cache.HashtableCacheProvider
                                      hibernate.transaction.manager_lookup_class: org.hibernate.transaction.JBossTransactionManagerLookup
                                      hibernate.jndi.java.naming.factory.initial: org.jnp.interfaces.NamingContextFactory
                                      hibernate.dialect: org.hibernate.dialect.HSQLDialect
                                      hibernate.format_sql: true
                                      hibernate.jacc.ctx.id: timetracker.war
                                      hibernate.session_factory_name: persistence.unit:unitName=#timetracker-persistence
                                      hibernate.cache.region_prefix: persistence.unit:unitName=#timetracker-persistence
                                      hibernate.bytecode.use_reflection_optimizer: false
                                      hibernate.show_sql: true
                                      hibernate.bytecode.provider: javassist
                                      hibernate.connection.release_mode: after_statement]
                              

                               

                              Error:

                              2010-09-13 19:53:08,238 WARN  [org.hibernate.cfg.AnnotationConfiguration] (HDScanner) Unable to apply constraints on DDL for timetracker.impl.OperatorImpl
                              java.lang.ClassNotFoundException: timetracker.impl.OperatorImpl from BaseClassLoader@12bed82{VFSClassLoaderPolicy@f60f20{name=vfsfile:/D:/Entwicklung/jboss-5.1.0.GA/server/default/conf/jboss-service.xml ...
                              
                              • 13. Re: hibernate-mapping ClassNotFoundException
                                jaikiran pai Master

                                Yes, the stacktrace suggests it's using the wrong classloader:

                                 

                                Caused by: java.lang.ClassNotFoundException: timetracker.impl.OperatorImpl from BaseClassLoader@fb78af{VFSClassLoaderPolicy@1b030d8...
                                    at org.jboss.classloader.spi.base.BaseClassLoader.loadClass(BaseClassLoader.java:448) 
                                    at java.lang.ClassLoader.loadClass(ClassLoader.java:248) 
                                    at java.lang.Class.forName0(Native Method) 
                                    at java.lang.Class.forName(Class.java:247) 
                                    at org.hibernate.annotations.common.util.ReflectHelper.classForName(ReflectHelper.java:78) 
                                    at org.hibernate.annotations.common.reflection.java.JavaReflectionManager.classForName(JavaReflectionManager.java:79) 
                                    at org.hibernate.ejb.EventListenerConfigurator.configure(EventListenerConfigurator.java:181) 
                                    ... 63 more

                                 

                                 

                                The code in org.hibernate.annotations.common.uti.ReflectHelper.classForName looks like this:

                                 

                                public static Class classForName(String name, Class caller) throws ClassNotFoundException {
                                    try {
                                      ClassLoader contextClassLoader = Thread.currentThread().getContextClassLoader();
                                      if (contextClassLoader != null)
                                        return contextClassLoader.loadClass(name);
                                    }
                                    catch (Throwable e)
                                    {
                                    }
                                    return Class.forName(name, true, caller.getClassLoader());
                                  }

                                 

                                So someone, somewhere is setting the TCCL to null or the real exception is being eaten up without being logged. If you have a debugger, it would be a good idea to see what's going on in that code.

                                • 14. Re: hibernate-mapping ClassNotFoundException
                                  Daniel Winz Newbie

                                  I am new to JBoss. I can remote debug after deployment but I don't have any idea how to debug deployment itself.

                                   

                                  But I unlimeted some more log4j settings to DEBUG and got real large logfile (19MB unzipped) ...

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