[jboss-user] [Installation, Configuration & DEPLOYMENT] - LinkageError... and yet everything seems fine

[nicdo77]

Hi,
I have an app running under JBoss4.0.5. 
I have a quartz task, supposed to do some file parsing and then send a mail with a file attached. Before implementing this task, i didnt have any Linkage problem with my mail and activation librairies.
But now when the task launches, i get the following:
javax.ejb.EJBException: com.thalys.opalys.business.MailServiceException: loader constraints violated when linking javax/activation/DataHandler class
  | 	at com.thalys.opalys.business.ejb.MailServiceBean.sendAttachmentMail(MailServiceBean.java:53)
  | 	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:585)
  | 	at org.jboss.invocation.Invocation.performCall(Invocation.java:359)
  | 	at org.jboss.ejb.StatelessSessionContainer$ContainerInterceptor.invoke(StatelessSessionContainer.java:237)
  | 	at org.jboss.resource.connectionmanager.CachedConnectionInterceptor.invoke(CachedConnectionInterceptor.java:158)
  | 	at org.jboss.ejb.plugins.StatelessSessionInstanceInterceptor.invoke(StatelessSessionInstanceInterceptor.java:169)
  | 	at org.jboss.ejb.plugins.CallValidationInterceptor.invoke(CallValidationInterceptor.java:63)
  | 	at org.jboss.ejb.plugins.AbstractTxInterceptor.invokeNext(AbstractTxInterceptor.java:121)
  | 	at org.jboss.ejb.plugins.TxInterceptorCMT.runWithTransactions(TxInterceptorCMT.java:350)
  | 	at org.jboss.ejb.plugins.TxInterceptorCMT.invoke(TxInterceptorCMT.java:181)
  | 	at org.jboss.ejb.plugins.SecurityInterceptor.invoke(SecurityInterceptor.java:168)
  | 	at org.jboss.ejb.plugins.LogInterceptor.invoke(LogInterceptor.java:205)
  | 	at org.jboss.ejb.plugins.ProxyFactoryFinderInterceptor.invoke(ProxyFactoryFinderInterceptor.java:136)
  | 	at org.jboss.ejb.SessionContainer.internalInvoke(SessionContainer.java:648)
  | 	at org.jboss.ejb.Container.invoke(Container.java:954)
  | 	at org.jboss.ejb.plugins.local.BaseLocalProxyFactory.invoke(BaseLocalProxyFactory.java:430)
  | 	at org.jboss.ejb.plugins.local.StatelessSessionProxy.invoke(StatelessSessionProxy.java:103)
  | 	at $Proxy91.sendAttachmentMail(Unknown Source)
  | 	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:585)
  | 	at org.springframework.ejb.access.LocalSlsbInvokerInterceptor.invoke(LocalSlsbInvokerInterceptor.java:71)
  | 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:169)
  | 	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:169)
  | 	at $Proxy124.sendAttachmentMail(Unknown Source)
  | 	at com.thalys.opalys.schedule.WifiRequestSenderJob.doIt(WifiRequestSenderJob.java:55)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  | 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  | 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  | 	at java.lang.reflect.Method.invoke(Method.java:585)
  | 	at org.springframework.util.MethodInvoker.invoke(MethodInvoker.java:248)
  | 	at org.springframework.scheduling.quartz.MethodInvokingJobDetailFactoryBean$MethodInvokingJob.executeInternal(MethodInvokingJobDetailFactoryBean.java:198)
  | 	at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:90)
  | 	at org.quartz.core.JobRunShell.run(JobRunShell.java:203)
  | 	at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:520)
  | Caused by: com.thalys.opalys.business.MailServiceException: loader constraints violated when linking javax/activation/DataHandler class
  | 	at com.thalys.opalys.business.MailServiceBase.sendAttachmentMail(MailServiceBase.java:105)
  | 	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:585)
  | 	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:291)
  | 	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:180)
  | 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:147)
  | 	at org.springframework.orm.hibernate3.HibernateInterceptor.invoke(HibernateInterceptor.java:88)
  | 	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:169)
  | 	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:169)
  | 	at $Proxy124.sendAttachmentMail(Unknown Source)
  | 	at com.thalys.opalys.business.ejb.MailServiceBean.sendAttachmentMail(MailServiceBean.java:44)
  | 	... 38 more
  | Caused by: java.lang.LinkageError: loader constraints violated when linking javax/activation/DataHandler class
  | 	at org.springframework.mail.javamail.MimeMessageHelper.addAttachment(MimeMessageHelper.java:966)
  | 	at org.springframework.mail.javamail.MimeMessageHelper.addAttachment(MimeMessageHelper.java:987)
  | 	at com.thalys.opalys.business.MailServiceImpl.handleSendAttachmentMail(MailServiceImpl.java:73)
  | 	at com.thalys.opalys.business.MailServiceBase.sendAttachmentMail(MailServiceBase.java:101)
  | 	... 50 more

But i checked in my JMX console, i tried displayClassInfo() on "javax/activation/DataHandler" and i get the following
javax/activation/DataHandler Information
  | Not loaded in repository cache
  | 
  | 
  | ### Instance0 found in UCL: org.jboss.mx.loading.UnifiedClassLoader3 at 297ba3{ url=null ,addedOrder=2}
  | 
which is Ok according to the JBoss wiki available here about LinkageError: http://wiki.jboss.org/wiki/Wiki.jsp?page=ClassCastExceptions

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