title: tomcat 7 Spring 3.1 Eclipselink 2.3
body: <p>I am trying to develop my first spring application and deploy it to tomcat 7. I created the project configuration and every thing was working fine. I faced a problem when I changed a onetoone field fetch mode to LAZY.</p>
  
  <p>I think the problem is with load-time-weaving</p>
  
  <p>following are the configuration:</p>
  
  <pre><code>&lt;bean id="scholarDataSource" class="org.apache.tomcat.jdbc.pool.DataSource" destroy-method="close"&gt;
      ...
  &lt;/bean&gt;
  
  &lt;bean id="scholarEmf" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"&gt;
      &lt;property name="dataSource" ref="scholarDataSource" /&gt;
      &lt;property name="packagesToScan" value="edu.najah.scholar.spring.entities" /&gt;
      &lt;property name="jpaVendorAdapter"&gt;
          &lt;bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaVendorAdapter"&gt;
              &lt;property name="showSql" value="true"/&gt;
              &lt;property name="generateDdl" value="true"/&gt;
              &lt;property name="databasePlatform" value="org.eclipse.persistence.platform.database.oracle.Oracle11Platform"/&gt;
          &lt;/bean&gt;
      &lt;/property&gt;
      &lt;property name="jpaDialect"&gt;
          &lt;bean class="org.springframework.orm.jpa.vendor.EclipseLinkJpaDialect" /&gt;
      &lt;/property&gt;        
      &lt;property name="loadTimeWeaver"&gt;
          &lt;bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" /&gt;
      &lt;/property&gt;
  &lt;/bean&gt;
  
  
  &lt;bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager"&gt;
      &lt;property name="entityManagerFactory" ref="scholarEmf" /&gt;
  &lt;/bean&gt;
  
  &lt;tx:annotation-driven transaction-manager="txManager"/&gt;
  &lt;context:component-scan base-package="edu.najah.scholar.spring" /&gt;
  &lt;context:load-time-weaver /&gt;
  </code></pre>
  
  <p>and I added the following to META-INF/context.xml</p>
  
  <pre><code>&lt;Loader loaderClass="org.springframework.instrument.classloading.tomcat.TomcatInstrumentableClassLoader"/&gt;
  </code></pre>
  
  <p>THE FOLLOWING ERROR IS RAISED IN THE FIRST REQUEST:</p>
  
  <pre><code>org.springframework.web.util.NestedServletException: Request processing failed; nested exception is javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.IntegrityException
  Descriptor Exceptions: 
  ---------------------------------------------------------
  
  Exception [EclipseLink-60] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The method [_persistence_set_translation_vh] or [_persistence_get_translation_vh] is not defined in the object [edu.najah.scholar.entities.Node].
  Internal Exception: java.lang.NoSuchMethodException: edu.najah.scholar.entities.Node._persistence_get_translation_vh()
  Mapping: org.eclipse.persistence.mappings.OneToOneMapping[translation]
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --&gt; [DatabaseTable(SCHOLAR.NODE)])
  
  Exception [EclipseLink-218] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: A NullPointerException would have occurred accessing a non-existent weaved _vh_ method [_persistence_get_translation_vh].  The class was not weaved properly - for EE deployments, check the module order in the application.xml deployment descriptor and verify that the module containing the persistence unit is ahead of any other module that uses it.
  
  Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The table [NODE] is not present in this descriptor.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --&gt; [DatabaseTable(SCHOLAR.JOURANL)])
  
  Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The table [NODE] is not present in this descriptor.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --&gt; [DatabaseTable(SCHOLAR.JOURANL)])
  
  Exception [EclipseLink-41] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: A non-read-only mapping must be defined for the sequence number field.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.JournalIssue --&gt; [DatabaseTable(SCHOLAR.NODE), DatabaseTable(SCHOLAR.JOURNAL_ISSUE)])
  
  Runtime Exceptions: 
  ---------------------------------------------------------
  
  java.lang.NullPointerException
  
      org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
      org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
  
  
  root cause 
  
  javax.persistence.PersistenceException: Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.IntegrityException
  Descriptor Exceptions: 
  ---------------------------------------------------------
  
  Exception [EclipseLink-60] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The method [_persistence_set_translation_vh] or [_persistence_get_translation_vh] is not defined in the object [edu.najah.scholar.entities.Node].
  Internal Exception: java.lang.NoSuchMethodException: edu.najah.scholar.entities.Node._persistence_get_translation_vh()
  Mapping: org.eclipse.persistence.mappings.OneToOneMapping[translation]
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --&gt; [DatabaseTable(SCHOLAR.NODE)])
  
  Exception [EclipseLink-218] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: A NullPointerException would have occurred accessing a non-existent weaved _vh_ method [_persistence_get_translation_vh].  The class was not weaved properly - for EE deployments, check the module order in the application.xml deployment descriptor and verify that the module containing the persistence unit is ahead of any other module that uses it.
  
  Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The table [NODE] is not present in this descriptor.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --&gt; [DatabaseTable(SCHOLAR.JOURANL)])
  
  Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The table [NODE] is not present in this descriptor.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --&gt; [DatabaseTable(SCHOLAR.JOURANL)])
  
  Exception [EclipseLink-41] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: A non-read-only mapping must be defined for the sequence number field.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.JournalIssue --&gt; [DatabaseTable(SCHOLAR.NODE), DatabaseTable(SCHOLAR.JOURNAL_ISSUE)])
  
  Runtime Exceptions: 
  ---------------------------------------------------------
  
  java.lang.NullPointerException
  
      org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:501)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:290)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:268)
      sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      java.lang.reflect.Method.invoke(Method.java:601)
      org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:376)
      org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:517)
      $Proxy33.createEntityManager(Unknown Source)
      org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:234)
      $Proxy43.find(Unknown Source)
      edu.najah.scholar.spring.dao.NodeDaoImpl.find(NodeDaoImpl.java:43)
      edu.najah.scholar.spring.bo.NodeBoImpl.find(NodeBoImpl.java:38)
      edu.najah.scholar.spring.controller.JounralController.test(JounralController.java:91)
      sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      java.lang.reflect.Method.invoke(Method.java:601)
      org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
      org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
      org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
      org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
      org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
      org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
      org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
  
  
  root cause 
  
  Exception [EclipseLink-0] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.IntegrityException
  Descriptor Exceptions: 
  ---------------------------------------------------------
  
  Exception [EclipseLink-60] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The method [_persistence_set_translation_vh] or [_persistence_get_translation_vh] is not defined in the object [edu.najah.scholar.entities.Node].
  Internal Exception: java.lang.NoSuchMethodException: edu.najah.scholar.entities.Node._persistence_get_translation_vh()
  Mapping: org.eclipse.persistence.mappings.OneToOneMapping[translation]
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --&gt; [DatabaseTable(SCHOLAR.NODE)])
  
  Exception [EclipseLink-218] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: A NullPointerException would have occurred accessing a non-existent weaved _vh_ method [_persistence_get_translation_vh].  The class was not weaved properly - for EE deployments, check the module order in the application.xml deployment descriptor and verify that the module containing the persistence unit is ahead of any other module that uses it.
  
  Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The table [NODE] is not present in this descriptor.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --&gt; [DatabaseTable(SCHOLAR.JOURANL)])
  
  Exception [EclipseLink-93] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: The table [NODE] is not present in this descriptor.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Journal --&gt; [DatabaseTable(SCHOLAR.JOURANL)])
  
  Exception [EclipseLink-41] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: A non-read-only mapping must be defined for the sequence number field.
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.JournalIssue --&gt; [DatabaseTable(SCHOLAR.NODE), DatabaseTable(SCHOLAR.JOURNAL_ISSUE)])
  
  Runtime Exceptions: 
  ---------------------------------------------------------
  
  java.lang.NullPointerException
  
      org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:535)
      org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:476)
      org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.initializeDescriptors(DatabaseSessionImpl.java:435)
      org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.postConnectDatasource(DatabaseSessionImpl.java:673)
      org.eclipse.persistence.internal.sessions.DatabaseSessionImpl.login(DatabaseSessionImpl.java:631)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryProvider.login(EntityManagerFactoryProvider.java:208)
      org.eclipse.persistence.internal.jpa.EntityManagerSetupImpl.deploy(EntityManagerSetupImpl.java:472)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.getDatabaseSession(EntityManagerFactoryDelegate.java:188)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryDelegate.createEntityManagerImpl(EntityManagerFactoryDelegate.java:277)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManagerImpl(EntityManagerFactoryImpl.java:290)
      org.eclipse.persistence.internal.jpa.EntityManagerFactoryImpl.createEntityManager(EntityManagerFactoryImpl.java:268)
      sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      java.lang.reflect.Method.invoke(Method.java:601)
      org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.invokeProxyMethod(AbstractEntityManagerFactoryBean.java:376)
      org.springframework.orm.jpa.AbstractEntityManagerFactoryBean$ManagedEntityManagerFactoryInvocationHandler.invoke(AbstractEntityManagerFactoryBean.java:517)
      $Proxy33.createEntityManager(Unknown Source)
      org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:234)
      $Proxy43.find(Unknown Source)
      edu.najah.scholar.spring.dao.NodeDaoImpl.find(NodeDaoImpl.java:43)
      edu.najah.scholar.spring.bo.NodeBoImpl.find(NodeBoImpl.java:38)
      edu.najah.scholar.spring.controller.JounralController.test(JounralController.java:91)
      sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      java.lang.reflect.Method.invoke(Method.java:601)
      org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
      org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
      org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
      org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
      org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
      org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
      org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
  
  
  note The full stack trace of the root cause is available in the Apache Tomcat/7.0.22 logs.
  </code></pre>
  
  <p>IN THE NEXT REQUESTS THE FOLLOWING ERROR RAISED:</p>
  
  <pre><code>org.springframework.web.util.NestedServletException: Request processing failed; nested exception is Exception [EclipseLink-44] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: Missing class indicator field from database row [ArrayRecord(
      SCHOLAR.NODE.ID =&gt; 407
      SCHOLAR.NODE.LANG =&gt; ar
      SCHOLAR.NODE.OWNER =&gt; null
      SCHOLAR.NODE.TRANSLATION_ID =&gt; 408)].
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --&gt; [DatabaseTable(SCHOLAR.NODE)])
      org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:894)
      org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
  
  
  root cause 
  
  Exception [EclipseLink-44] (Eclipse Persistence Services - 2.3.0.v20110604-r9504): org.eclipse.persistence.exceptions.DescriptorException
  Exception Description: Missing class indicator field from database row [ArrayRecord(
      SCHOLAR.NODE.ID =&gt; 407
      SCHOLAR.NODE.LANG =&gt; ar
      SCHOLAR.NODE.OWNER =&gt; null
      SCHOLAR.NODE.TRANSLATION_ID =&gt; 408)].
  Descriptor: RelationalDescriptor(edu.najah.scholar.entities.Node --&gt; [DatabaseTable(SCHOLAR.NODE)])
      org.eclipse.persistence.exceptions.DescriptorException.missingClassIndicatorField(DescriptorException.java:945)
      org.eclipse.persistence.descriptors.InheritancePolicy.classFromRow(InheritancePolicy.java:341)
      org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:597)
      org.eclipse.persistence.internal.descriptors.ObjectBuilder.buildObject(ObjectBuilder.java:568)
      org.eclipse.persistence.queries.ObjectLevelReadQuery.buildObject(ObjectLevelReadQuery.java:733)
      org.eclipse.persistence.queries.ReadObjectQuery.registerResultInUnitOfWork(ReadObjectQuery.java:774)
      org.eclipse.persistence.queries.ReadObjectQuery.executeObjectLevelReadQuery(ReadObjectQuery.java:455)
      org.eclipse.persistence.queries.ObjectLevelReadQuery.executeDatabaseQuery(ObjectLevelReadQuery.java:1097)
      org.eclipse.persistence.queries.DatabaseQuery.execute(DatabaseQuery.java:829)
      org.eclipse.persistence.queries.ObjectLevelReadQuery.execute(ObjectLevelReadQuery.java:1056)
      org.eclipse.persistence.queries.ReadObjectQuery.execute(ReadObjectQuery.java:416)
      org.eclipse.persistence.queries.ObjectLevelReadQuery.executeInUnitOfWork(ObjectLevelReadQuery.java:1144)
      org.eclipse.persistence.internal.sessions.UnitOfWorkImpl.internalExecuteQuery(UnitOfWorkImpl.java:2863)
      org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1501)
      org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1483)
      org.eclipse.persistence.internal.sessions.AbstractSession.executeQuery(AbstractSession.java:1443)
      org.eclipse.persistence.internal.jpa.EntityManagerImpl.executeQuery(EntityManagerImpl.java:820)
      org.eclipse.persistence.internal.jpa.EntityManagerImpl.findInternal(EntityManagerImpl.java:760)
      org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:653)
      org.eclipse.persistence.internal.jpa.EntityManagerImpl.find(EntityManagerImpl.java:532)
      sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      java.lang.reflect.Method.invoke(Method.java:601)
      org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:365)
      $Proxy43.find(Unknown Source)
      sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      java.lang.reflect.Method.invoke(Method.java:601)
      org.springframework.orm.jpa.SharedEntityManagerCreator$SharedEntityManagerInvocationHandler.invoke(SharedEntityManagerCreator.java:240)
      $Proxy43.find(Unknown Source)
      edu.najah.scholar.spring.dao.NodeDaoImpl.find(NodeDaoImpl.java:43)
      edu.najah.scholar.spring.bo.NodeBoImpl.find(NodeBoImpl.java:38)
      edu.najah.scholar.spring.controller.JounralController.test(JounralController.java:91)
      sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
      sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
      java.lang.reflect.Method.invoke(Method.java:601)
      org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
      org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
      org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
      org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:900)
      org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:827)
      org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:882)
      org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:778)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
      javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
  
  
  note The full stack trace of the root cause is available in the Apache Tomcat/7.0.22 logs.
  </code></pre>
  
  <p>NOTE: i AM USING A polymorphic query (querying a parent entity class)</p>
  
  <p>anyone can point me to the right direction to configure my app to right weaving the entity classes?</p>
  
  <p>NOTE: I tested the same query on glassfish (using EJB sessionfacade) and it works fine.</p>