BPM Custom Worklist Implementation

Question

Hi everyone,
I am working on BPM custom worklist application. I followed the steps to create a sample page with using TaskList task flow as explained in [BPM User's Guide|http://docs.oracle.com/cd/E23943_01/user.1111/e15175/bpmug_ws_taskflows.htm#BACFBHAE]. But when I browse to the sample page that contains TaskList task flow, it just renendered a blank page and the below exception trace is thrown on SOA console. I guess it's coming from security related issue. Does anyone know what the cause of the problem is? Thanks in advance.
<Aug 15, 2012 1:45:46 AM EDT> <Notice> <Diagnostics> <BEA-320068> <Watch 'UncheckedException' with severity 'Notice' on server 'soa_server1' has triggered at Aug 15, 2012 1:45:46 AM EDT. Notification details:                                                                                                                                                 
WatchRuleType: Log                                                                                                                                                              
WatchRule: (SEVERITY = 'Error') AND ((MSGID = 'WL-101020') OR (MSGID = 'WL-101017') OR (MSGID = 'WL-000802') OR (MSGID = 'BEA-101020') OR (MSGID = 'BEA-101017') OR (MSGID = 'BEA-000802'))                                                                                                                                                                      
WatchData: DATE = Aug 15, 2012 1:45:46 AM EDT SERVER = soa_server1 MESSAGE = [ServletContext@8620404[app:bpmUI_application1 module:bpmUI-ViewController-context-root path:/bpmUI-ViewController-context-root spec-version:2.5]] Servlet failed with Exception                                                                                                    
java.lang.NullPointerException                                                                                                                                                  
        at oracle.adfinternal.view.faces.context.RichPhaseListener.afterPhase(RichPhaseListener.java:352)                                                                       
        at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:472)                                                                          
        at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:222)
        at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
        at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
        at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
        at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:301)
        at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
        at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:205)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
        at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:179)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
        at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:106)
        at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
        at oracle.adfinternal.view.faces.activedata.AdsFilter.doFilter(AdsFilter.java:60)
        at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl$FilterListChain.doFilter(TrinidadFilterImpl.java:446)
        at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl._doFilterImpl(TrinidadFilterImpl.java:271)
        at org.apache.myfaces.trinidadinternal.webapp.TrinidadFilterImpl.doFilter(TrinidadFilterImpl.java:177)
        at org.apache.myfaces.trinidad.webapp.TrinidadFilter.doFilter(TrinidadFilter.java:92)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
        at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)
        at java.security.AccessController.doPrivileged(Native Method)
        at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
        at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:442)
        at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)
        at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)
        at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
        at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:139)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
        at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
        at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3730)
        at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3696)
        at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
        at weblogic.security.service.SecurityManager.runAs(SecurityManager.java:120)
        at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2273)
        at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2179)
        at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1490)
        at weblogic.work.ExecuteThread.execute(ExecuteThread.java:256)
        at weblogic.work.ExecuteThread.run(ExecuteThread.java:221)Regards,
K.Hein

Answer 1

I started to work on my custom worklist client using this explanation: http://download.oracle.com/docs/cd/E15523_01/integration.1111/e10224/bp_worklistcust.htm#CIHDAABE
I tried the code from Example 28-1 (I'm calling it from main method of a test class) but I'm stuck with this stack trace:
Exception in thread "main" java.lang.NoClassDefFoundError: oracle/j2ee/ws/common/jaxws/ServiceDelegateImpl
     at oracle.bpel.services.workflow.client.WorkflowServiceClientFactory.getWorkflowServiceClient(WorkflowServiceClientFactory.java:144)
     at Execute.main(Execute.java:19)
Caused by: java.lang.ClassNotFoundException: oracle.j2ee.ws.common.jaxws.ServiceDelegateImpl
     at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
     at java.security.AccessController.doPrivileged(Native Method)
     at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
     at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
     at java.lang.ClassLoader.loadClass(ClassLoader.java:252)
     at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:320)
     ... 2 more
Web logic and SOA server are up and running.
I guess there has to be at least some config file but in the link I gave at the beginning I can't find any explanation how to write it.
Is there any better tutorial or explanation?
Please help :)