Problem looking with CastClassException on JBossConnectionFa

[karen.kramer]

Using JBoss EAP 3.4.0 with JBossMessaging 1.4.0.SP3
We are migrating from JBoss 4.2.2 GA with JBossMQ

I was able to download the example client code for a basic send/receive with a queue....the client runs perfectly:

Here is remote client code which I could run and results up to getting the Session object :

public void setupPTP()
throws JMSException,
NamingException
{

Hashtable env = new Hashtable();

env.put( Context.INITIAL_CONTEXT_FACTORY, "org.jnp.interfaces.NamingContextFactory" );
env.put( Context.PROVIDER_URL, "localhost:1099" );
env.put( Context.URL_PKG_PREFIXES, "org.jboss.naming:org.jnp.interfaces" );

InitialContext iniCtx = new InitialContext(env);

System.out.println("Here 1");
Object tmp = iniCtx.lookup("ConnectionFactory");
System.out.println("Got the tmp object: tmp is " + tmp.toString());
QueueConnectionFactory qcf = (QueueConnectionFactory) tmp;
System.out.println("Got the QueueConnectionFactory: + qcf is " + qcf.toString());

conn = qcf.createQueueConnection();
System.out.println("Got the QueueConnection: conn is " + conn.toString());
que = (Queue) iniCtx.lookup("queue/EventSubmitServiceCommandQueue");
System.out.println("Got the Que: que is " + que.toString());
session = conn.createQueueSession(false, QueueSession.AUTO_ACKNOWLEDGE);
System.out.println("Got the Session: session is " + session.toString());
conn.start();
}

RESULTS: THIS IS GOOD!
Got the tmp object: tmp is JBossConnectionFactory->ConnectionFactoryDelegate[jboss.messaging.connectionfactory:service=ConnectionFactory, SID=0]
Got the QueueConnectionFactory: + qcf is JBossConnectionFactory->ConnectionFactoryDelegate[jboss.messaging.connectionfactory:service=ConnectionFactory, SID=0]
Got the QueueConnection: conn is JBossConnection->ConnectionDelegate[13994297, ID=36-6udisckf-1-1a66ockf-7c3hoj-l1jvs4, SID=0]
Got the Que: que is JBossQueue[EventSubmitServiceCommandQueue]
Got the Session: session is JBossSession->SessionDelegate[18012736, ID=46-zxdisckf-1-1a66ockf-7c3hoj-l1jvs4]

PROBLEM
OK, so now I paste the same exact code into a java class inside of our application and I am getting a ClassCastException in the line:

QueueConnectionFactory qcf = ( QueueConnectionFactory ) tmp;

tmp is an instance of JBossConnectionFactory which (when I checked the source noticed) implements QueueConnectionFactory...so why won't it cast?

Does this have to do with the JNDI tree? Here is mine(part)

java: Namespace
+- ClusteredXAConnectionFactory (class: org.jboss.jms.client.JBossConnectionFactory)
+- jaas (class: javax.naming.Context)
| +- HsqlDbRealm (class: org.jboss.security.plugins.SecurityDomainContext)
| +- messaging (class: org.jboss.security.plugins.SecurityDomainContext)
| +- jmx-console (class: org.jboss.security.plugins.SecurityDomainContext)
| +- JmsXARealm (class: org.jboss.security.plugins.SecurityDomainContext)
+- TransactionPropagationContextImporter (class: com.arjuna.ats.internal.jbossatx.jta.PropagationContextManager)
+- JmsXA (class: org.jboss.resource.adapter.jms.JmsConnectionFactoryImpl)
+- comp.ejb3 (class: javax.naming.Context)
| NonContext: null
+- DefaultDS (class: org.jboss.resource.adapter.jdbc.WrapperDataSource)
+- StdJMSPool (class: org.jboss.jms.asf.StdServerSessionPoolFactory)
+- TransactionManager (class: com.arjuna.ats.jbossatx.jta.TransactionManagerDelegate)
+- ClusteredConnectionFactory (class: org.jboss.jms.client.JBossConnectionFactory)
+- TransactionPropagationContextExporter (class: com.arjuna.ats.internal.jbossatx.jta.PropagationContextManager)
+- ConnectionFactory (class: org.jboss.jms.client.JBossConnectionFactory)
+- DefaultJMSProvider (class: org.jboss.jms.jndi.JNDIProviderAdapter)
+- XAConnectionFactory (class: org.jboss.jms.client.JBossConnectionFactory)
+- jdbcISAC (class: org.jboss.resource.adapter.jdbc.WrapperDataSource)
+- Mail (class: javax.mail.Session)
+- jdbcScanOptics (class: org.jboss.resource.adapter.jdbc.WrapperDataSource)
+- comp.original (class: javax.namingMain.Context)
+- timedCacheFactory (class: javax.naming.Context)
Failed to lookup: timedCacheFactory, errmsg=org.jboss.util.TimedCachePolicy
+- SecurityProxyFactory (class: org.jboss.security.SubjectSecurityProxyFactory)
+- comp (class: javax.naming.Context)

Global JNDI Namespace
+- CustomerNumberAdministration (proxy: $Proxy141 implements interface com.cbc.isac.ejb20.customernumber.CustomerNumberAdministrationHome,interface javax.ejb.Handle)
+- CacheLoad (proxy: $Proxy143 implements interface com.cbc.isac.ejb20.cacheload.TpCodesHome,interface javax.ejb.Handle)
+- ClusteredXAConnectionFactory (class: org.jboss.jms.client.JBossConnectionFactory)
+- XAConnectionFactory (class: org.jboss.jms.client.JBossConnectionFactory)
+- queue (class: org.jnp.interfaces.NamingContext)
| +- ExpiryQueue (class: org.jboss.jms.destination.JBossQueue)
| +- EventSubmitServiceCommandQueue (class: org.jboss.jms.destination.JBossQueue)
| +- EventCompleteServiceCommandQueue (class: org.jboss.jms.destination.JBossQueue)
| +- EventSubmitErrorQueue (class: org.jboss.jms.destination.JBossQueue)
| +- ScanOpticsServiceCommandQueue (class: org.jboss.jms.destination.JBossQueue)
| +- testDistributedQueue (class: org.jboss.jms.destination.JBossQueue)
| +- QueueWithOwnDLQAndExpiryQueue (class: org.jboss.jms.destination.JBossQueue)
| +- EventSubmitServiceCommanQueue (class: org.jboss.jms.destination.JBossQueue)
| +- DisputeStatusErrorQueue (class: org.jboss.jms.destination.JBossQueue)
| +- ScanOpticsSerivceCommandQueue (class: org.jboss.jms.destination.JBossQueue)
| +- EventCompleteErrorQueue (class: org.jboss.jms.destination.JBossQueue)
| +- testQueue (class: org.jboss.jms.destination.JBossQueue)
| +- D (class: org.jboss.jms.destination.JBossQueue)
| +- PrivateDLQ (class: org.jboss.jms.destination.JBossQueue)
| +- C (class: org.jboss.jms.destination.JBossQueue)
| +- B (class: org.jboss.jms.destination.JBossQueue)
| +- A (class: org.jboss.jms.destination.JBossQueue)
| +- PrivateExpiryQueue (class: org.jboss.jms.destination.JBossQueue)
| +- DisputeStatusMessageQueue (class: org.jboss.jms.destination.JBossQueue)
| +- ScanOpticsErrorQueue (class: org.jboss.jms.destination.JBossQueue)
| +- DLQ (class: org.jboss.jms.destination.JBossQueue)
| +- QueueWithOwnRedeliveryDelay (class: org.jboss.jms.destination.JBossQueue)
| +- ex (class: org.jboss.jms.destination.JBossQueue)
+- EventComplete (proxy: $Proxy115 implements interface com.cbc.isac.ejb20.eventcomplete.EventCompleteHome,interface javax.ejb.Handle)
+- MessageManagement (proxy: $Proxy129 implements interface com.cbc.isac.ejb20.messagemanagement.MessageManagementHome,interface javax.ejb.Handle)
+- TransactionSynchronizationRegistry (class: com.arjuna.ats.internal.jta.transaction.arjunacore.TransactionSynchronizationRegistryImple)
+- UUIDKeyGeneratorFactory (class: org.jboss.ejb.plugins.keygenerator.uuid.UUIDKeyGeneratorFactory)
+- PaymentCalculator (proxy: $Proxy117 implements interface com.cbc.isac.ejb20.payment.PaymentCalculatorHome,interface javax.ejb.Handle)
+- ContactMaintenance (proxy: $Proxy111 implements interface com.cbc.isac.ejb20.contactinfo.ContactMaintenanceHome,interface javax.ejb.Handle)
+- HiLoKeyGeneratorFactory (class: org.jboss.ejb.plugins.keygenerator.hilo.HiLoKeyGeneratorFactory)
+- Security (proxy: $Proxy105 implements interface com.cbc.isac.ejb20.security.SecurityHome,interface javax.ejb.Handle)
+- ScanOptics (proxy: $Proxy89 implements interface com.cbc.isac.ejb20.scanoptics.ScanOpticsHome,interface javax.ejb.Handle)
+- UserTransactionSessionFactory (proxy: $Proxy14 implements interface org.jboss.tm.usertx.interfaces.UserTransactionSessionFactory)
+- DocumentMaintenance (proxy: $Proxy91 implements interface com.cbc.isac.ejb20.document.DocumentMaintenanceHome,interface javax.ejb.Handle)
+- FeeMaintenance (proxy: $Proxy107 implements interface com.cbc.isac.ejb20.feemaint.FeeMaintenanceHome,interface javax.ejb.Handle)
+- DocTemplateMaintenance (proxy: $Proxy139 implements interface com.cbc.isac.ejb20.doctemplate.DocTemplateMaintenanceHome,interface javax.ejb.Handle)
+- Inquiry (proxy: $Proxy99 implements interface com.cbc.isac.ejb20.inquiry.InquiryHome,interface javax.ejb.Handle)
+- console (class: org.jnp.interfaces.NamingContext)
| +- PluginManager (proxy: $Proxy49 implements interface org.jboss.console.manager.PluginManagerMBean)
+- EventSubmit (proxy: $Proxy119 implements interface com.cbc.isac.ejb20.eventsubmit.EventSubmitHome,interface javax.ejb.Handle)
+- PaymentUtil (proxy: $Proxy101 implements interface com.cbc.isac.ejb20.payment.PaymentUtilHome,interface javax.ejb.Handle)
+- topic (class: org.jnp.interfaces.NamingContext)
| +- testDurableTopic (class: org.jboss.jms.destination.JBossTopic)
| +- TopicWithOwnRedeliveryDelay (class: org.jboss.jms.destination.JBossTopic)
| +- testTopic (class: org.jboss.jms.destination.JBossTopic)
| +- testDistributedTopic (class: org.jboss.jms.destination.JBossTopic)
| +- TopicWithOwnDLQAndExpiryQueue (class: org.jboss.jms.destination.JBossTopic)
| +- securedTopic (class: org.jboss.jms.destination.JBossTopic)
+- StatusListsSearch (proxy: $Proxy95 implements interface com.cbc.isac.ejb20.statuslists.StatusListsSearchHome,interface javax.ejb.Handle)
+- XmlToCpuConversion (proxy: $Proxy127 implements interface com.cbc.isac.ejb20.xmltocpu.XmlToCpuConversionHome,interface javax.ejb.Handle)
+- EventAddressSearch (proxy: $Proxy135 implements interface com.cbc.isac.ejb20.search.EventAddressSearchHome,interface javax.ejb.Handle)
+- UserTransaction (class: org.jboss.tm.usertx.client.ClientUserTransaction)
+- AdverseActionMaintenance (proxy: $Proxy93 implements interface com.cbc.isac.ejb20.adverse.AdverseActionMaintenanceHome,interface javax.ejb.Handle)
+- EventCompliance (proxy: $Proxy125 implements interface com.cbc.isac.ejb20.compliance.EventComplianceHome,interface javax.ejb.Handle)
+- ReportSubmissionManager (proxy: $Proxy131 implements interface com.cbc.isac.ejb20.eventcomplete.ReportSubmissionManagerHome,interface javax.ejb.Handle)
+- DisputeMaintenance (proxy: $Proxy109 implements interface com.cbc.isac.ejb20.dispute.DisputeMaintenanceHome,interface javax.ejb.Handle)
+- ClusteredConnectionFactory (class: org.jboss.jms.client.JBossConnectionFactory)
+- ACL (proxy: $Proxy121 implements interface com.cbc.isac.ejb20.acl.ACLHome,interface javax.ejb.Handle)
+- InsertMaintenance (proxy: $Proxy123 implements interface com.cbc.isac.ejb20.insert.InsertMaintenanceHome,interface javax.ejb.Handle)
+- Iccon (proxy: $Proxy103 implements interface com.cbc.isac.ejb20.iccon.IcconHome,interface javax.ejb.Handle)
+- ACDV (proxy: $Proxy133 implements interface com.cbc.isac.ejb20.acdv.AcdvHome,interface javax.ejb.Handle)
+- EventMaintenance (proxy: $Proxy137 implements interface com.cbc.isac.ejb20.event.EventMaintenanceHome,interface javax.ejb.Handle)
+- jmx (class: org.jnp.interfaces.NamingContext)
| +- invoker (class: org.jnp.interfaces.NamingContext)
| | +- RMIAdaptor (proxy: $Proxy48 implements interface org.jboss.jmx.adaptor.rmi.RMIAdaptor,interface org.jboss.jmx.adaptor.rmi.RMIAdaptorExt)
| +- rmi (class: org.jnp.interfaces.NamingContext)
| | +- RMIAdaptor[link -> jmx/invoker/RMIAdaptor] (class: javax.naming.LinkRef)
+- ConnectionFactory (class: org.jboss.jms.client.JBossConnectionFactory)
+- HistoryMaintenance (proxy: $Proxy113 implements interface com.cbc.isac.ejb20.history.HistoryMaintenanceHome,interface javax.ejb.Handle)
+- UserAdministration (proxy: $Proxy97 implements interface com.cbc.isac.ejb20.useradmin.UserAdministrationHome,interface javax.ejb.Handle)


I've searched on the net and it doesn't appear to be a problem for anyone else, so I figured I was doing something ignorant...any help?

[peterj]

Do you by any chance have a jar file in your application that contains the javax.jmx.QueueConnectionFactory class? If so, remove that jar - you are running into a class loader issue where two different class loader loaded the same class (which makes them inherently different).

[karen.kramer]

Thanks! This was a great learning experience for me. We found that we had to "search and destroy" all classes of the package javax.jms from our application's third party jars and that fixed it. We also used Scott Stark's Debug class (source available on the net) and that was extremely useful for finding where classes were being loaded from.