Why do I get a ClassCastException when I use narrow() in
This code works in a non-cluster environment, but when I switch to HA-JNDI. I am getting a ClassCastException error on the server. I am using the "all" configuration. Is there something else that I have to do? I am getting this with our Servlets, from our swing Console application the clustering is working fine. Does the servlets need the jboss-all.jar? Thanks in advance.
Error on server:
Caused by: java.lang.ClassCastException
at com.sun.corba.se.internal.javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:293)
at javax.rmi.PortableRemoteObject.narrow(PortableRemoteObject.java:134)
at com.metamatrix.common.comm.platform.rmi.apiimpl.PlatformServerConnectionFactory.connectToLogonAPI(PlatformServerConnectionFactory.java:106)
at com.metamatrix.common.comm.platform.rmi.apiimpl.PlatformServerConnectionFactory.establishConnection(PlatformServerConnectionFactory.java:52)
Error on the Client:
Client library may not match server vendor or version for server mm://:. Client code loaded from plugin: null, initial context factory: org.jnp.interfaces.NamingContextFactory.null
private LogonAPI connectToLogonAPI(Properties props) throws CommunicationException {
Context ctx = null;
Hashtable h = new Hashtable();
if ( CommPlatformPlugin.DEBUG ) {
Object[] params = new Object[]{props};
CommPlatformPlugin.Util.log(IStatus.INFO,
MessageFormat.format(
"PlatformServerConnectionFactory.connectToLogonAPI - connection properties: {0}", //$NON-NLS-1$
params));
}
String PROVIDER_URL = props.getProperty(SERVER_URL_PROP);
if ( PROVIDER_URL == null || PROVIDER_URL.trim().length() == 0 ) {
throw new CommunicationException(
CommPlatformPlugin.Util.getString(
"PlatformServerConnectionFactory.Missing_required_property") + SERVER_URL_PROP); //$NON-NLS-1$
}
String INITIAL_CTX_FACT = props.getProperty(INIT_CTX_FACT_PROP);
if ( INITIAL_CTX_FACT == null || INITIAL_CTX_FACT.trim().length() == 0 ) {
INITIAL_CTX_FACT = NetUtils.getAppserverInitialContextFactoryName();
props.setProperty(INIT_CTX_FACT_PROP, INITIAL_CTX_FACT);
}
h.put(Context.INITIAL_CONTEXT_FACTORY, INITIAL_CTX_FACT);
h.put(Context.PROVIDER_URL, NetUtils.convertURLByInitailContext(INITIAL_CTX_FACT, PROVIDER_URL));
try {
ctx = new InitialContext(h);
LogonAPIHome home;
try {
home = (LogonAPIHome) PortableRemoteObject.narrow(ctx.lookup(LOGON_API_HOME), LogonAPIHome.class);
} catch (ClassCastException e) {
throw handleClassCastExceptionFromJndiLookup(PROVIDER_URL, INITIAL_CTX_FACT, e);
}
return home.create();
} catch (java.rmi.RemoteException re) {
throw new CommunicationException(re,
CommPlatformPlugin.Util.getString(
"PlatformServerConnectionFactory.Error_comunicating_with_LogonAPI")); //$NON-NLS-1$
} catch (javax.naming.NamingException ne) {
throw new CommunicationException(ne,
CommPlatformPlugin.Util.getString(
"PlatformServerConnectionFactory.Error_comunicating_with_LogonAPI")); //$NON-NLS-1$
} catch (javax.ejb.CreateException ce) {
throw new CommunicationException(ce,
CommPlatformPlugin.Util.getString(
"PlatformServerConnectionFactory.Error_comunicating_with_LogonAPI")); //$NON-NLS-1$
} finally {
if ( ctx != null ) {
try {
ctx.close();
} catch (Exception e) {
}
}
}
}