Toplink Proxy Authentication with 10.1.3 problem

Question

Hi,
I'm are using Toplink Proxy Authentication in a JSF application with SessionFacade pattern and have implemented a preLogin() method of oracle.itech.pil.utils.PILSessionEventManager (which implements SessionEventListener) as described in
http://www.oracle.com/technology/products/ias/toplink/doc/1013/main/_html/dblgcfg008.htm. Due to Class Loader problem while loading of SessionEventManager, I'm explicitly loading the Class by doing this:
try {
Thread.currentThread().getContextClassLoader().loadClass("oracle.itech.pil.utils.PILSessionEventManager");
catch(Exception exp) {
System.out.println("Exception while loading class oracle.itech.pil.utils.PILSessionEventManager "+exp.toString());
The SessionEventManager is loaded by doing this:
session.getEventManager().addListener(new PILSessionEventManager());
(Encountered while using <event-listener-class>oracle.itech.pil.events.PILSessionEventManager</event-listener-class> in sessions.xml file, so removed and added the same using session.getEventManager().addListener(new PILSessionEventManager()) )
But now, I'm encountering ClassCastException during the login to my application
The below pasted exception (oracle.oc4j.rmi.OracleRemoteException: java.lang.ClassCastException: oracle.itech.pil.utils.PILSessionEventManager) is coming when invoking line (Login)session.readObject(oracle.itech.pil.model.Login.class, expression);
Code :
XMLSessionConfigLoader xmlLoader =
new XMLSessionConfigLoader("META-INF/sessions.xml");
SessionManager sessionMgr = SessionManager.getManager();
DatabaseSession session =
(DatabaseSession)sessionMgr.getSession(xmlLoader, "serverSession",
SessionFacadeEJBBean.class.getClassLoader());
// Set Listener through Java code
//session.getEventManager().addListener(new PILSessionEventManager());
new PILSessionEventManager();
System.out.println("I am at getLoginDetails after the listner...>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
Login login = null;
LoggedInBB loggedIn = null;
ExpressionBuilder builder = new ExpressionBuilder();
Expression expression = null;
// If username is not null
System.out.println("The _uname is "+_uname);
if (_uname != null) {
expression = builder.get("uname").equalsIgnoreCase(_uname).and(builder.get("empno").equalsIgnoreCase(_empNo));
if (expression != null) {
System.out.println("expression != null >>>>>>>>>>>>>>");
//login = (Login)session.readObject(oracle.itech.pil.model.Login.class, expression);
login =(oracle.itech.pil.model.Login) (session.readAllObjects(oracle.itech.pil.model.Login.class, expression)).get(0);
System.out.println("Login Object is "+login);
Exception:
[TopLink Info]: 2006.05.02 05:04:18.703--ServerSession(21707422)--TopLink, version: Oracle TopLink - 10g Release 3 (10.1.3.0.0) (Build 060118)
[TopLink Info]: 2006.05.02 05:04:22.619--ServerSession(21707422)--serverSession login successful
06/05/02 17:04:22 I am at getLoginDetails after the listner............>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
06/05/02 17:04:22 The _uname is admin
06/05/02 17:04:22 expression != null >>>>>>>>>>>>>>
[TopLink Warning]: 2006.05.02 05:04:22.639--ServerSession(21707422)--java.lang.ClassCastException: oracle.itech.pil.utils.PILSessionEventManager
oracle.oc4j.rmi.OracleRemoteException: java.lang.ClassCastException: oracle.itech.pil.utils.PILSessionEventManager
     at com.evermind.server.ejb.EJBUtils.getUserException(EJBUtils.java:333)
     at com.evermind.server.ejb.interceptor.system.AbstractTxInterceptor.convertAndHandleMethodException(AbstractTxInterceptor.java:69)
     at com.evermind.server.ejb.interceptor.system.TxSupportsInterceptor.invoke(TxSupportsInterceptor.java:39)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
     at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
     at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:86)
     at SessionFacadeEJB_StatelessSessionBeanWrapper2.getLoginDetails(SessionFacadeEJB_StatelessSessionBeanWrapper2.java:172)
     at oracle.itech.pil.backing.LoginBB.LoginButton_action(LoginBB.java:182)
     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 com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
     at oracle.adf.view.faces.component.UIXCommand.broadcast(UIXCommand.java:211)
     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:381)
     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:367)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:336)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:196)
     at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:87)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at oracle.itech.pil.utils.PILFilter.doFilter(PILFilter.java:124)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:627)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:376)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:870)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:299)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:187)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
     Nested exception is:
java.lang.ClassCastException: oracle.itech.pil.utils.PILSessionEventManager
     at oracle.toplink.sessions.SessionEventManager.preExecuteQuery(SessionEventManager.java:508)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:976)
     at oracle.toplink.publicinterface.Session.executeQuery(Session.java:938)
     at oracle.toplink.publicinterface.Session.readAllObjects(Session.java:2458)
     at oracle.itech.pil.ejb.SessionFacadeEJBBean.getLoginDetails(SessionFacadeEJBBean.java:399)
     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 com.evermind.server.ejb.interceptor.joinpoint.EJBJoinPointImpl.invoke(EJBJoinPointImpl.java:35)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
     at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
     at com.evermind.server.ejb.interceptor.system.TxSupportsInterceptor.invoke(TxSupportsInterceptor.java:37)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
     at com.evermind.server.ejb.interceptor.system.DMSInterceptor.invoke(DMSInterceptor.java:52)
     at com.evermind.server.ejb.interceptor.InvocationContextImpl.proceed(InvocationContextImpl.java:69)
     at com.evermind.server.ejb.StatelessSessionEJBObject.OC4J_invokeMethod(StatelessSessionEJBObject.java:86)
     at SessionFacadeEJB_StatelessSessionBeanWrapper2.getLoginDetails(SessionFacadeEJB_StatelessSessionBeanWrapper2.java:172)
     at oracle.itech.pil.backing.LoginBB.LoginButton_action(LoginBB.java:182)
     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 com.sun.faces.el.MethodBindingImpl.invoke(MethodBindingImpl.java:126)
     at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:72)
     at oracle.adf.view.faces.component.UIXCommand.broadcast(UIXCommand.java:211)
     at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
     at javax.faces.component.UIViewRoot.processApplication(UIViewRoot.java:381)
     at com.sun.faces.lifecycle.InvokeApplicationPhase.execute(InvokeApplicationPhase.java:75)
     at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:200)
     at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:90)
     at javax.faces.webapp.FacesServlet.service(FacesServlet.java:197)
     at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:64)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._invokeDoFilter(AdfFacesFilterImpl.java:367)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl._doFilterImpl(AdfFacesFilterImpl.java:336)
     at oracle.adfinternal.view.faces.webapp.AdfFacesFilterImpl.doFilter(AdfFacesFilterImpl.java:196)
     at oracle.adf.view.faces.webapp.AdfFacesFilter.doFilter(AdfFacesFilter.java:87)
     at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:15)
     at oracle.itech.pil.utils.PILFilter.doFilter(PILFilter.java:124)
     at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:627)
     at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:376)
     at com.evermind.server.http.HttpRequestHandler.doProcessRequest(HttpRequestHandler.java:870)
     at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:451)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:299)
     at com.evermind.server.http.AJPRequestHandler.run(AJPRequestHandler.java:187)
     at oracle.oc4j.network.ServerSocketReadHandler$SafeRunnable.run(ServerSocketReadHandler.java:260)
     at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:303)
     at java.lang.Thread.run(Thread.java:595)
Any clue why this error, which i am facing since 10 days to complete my task
Thanks In Advance
Prashant

Answer 1

James, what Venkat and Prashant are trying to do is something like this...
1. If I connect to the DB using scott/tiger then in the preLogin method of the Toplink Session Listener class, the proxy user will connect using something like admin/welcome1 and in the database audit view, the name that shows up SHOULD BE that of admin and NOT of scott. This is called proxy authentication if it works fine.
We developed the above scenario but in the audit logs, we still see scott instead of admin as the user who connected.
2. This feature is available in the DB but our objective is to use it through TopLink
Also see Toplink Proxy Authentication Not Working
I hope I was able to explain the scenario clearly.
Any help will be appreciated
Regards,
Amit