Getting null pointer exception while running the UI project

Hi,
I created a new ADF UI project. I added a jspx, taskflow and jsff. The jsff is added in the taskflow. I dragged and dropped the TF as a region in the jspx. While running the jspx, I am getting a NPE. If I comment out the region, I see the jspx getting loaded. I tried changing the activation property of the taskflow in the page def as immediate. But I still get the exception. Please find below the complete stacktrace.
Any pointers to this will be highly appreciated.
java.lang.NullPointerException
at oracle.adf.model.binding.DCBindingContainerDef.createExecutables(DCBindingContainerDef.java:740)
at oracle.adf.model.binding.DCBindingContainerDef.initializeBindingContainer(DCBindingContainerDef.java:872)
at oracle.adf.model.binding.DCBindingContainerDef.createBindingContainer(DCBindingContainerDef.java:1092)
at oracle.adf.controller.internal.binding.RegionUtils.findOrCreateBindingContainer(RegionUtils.java:140)
at oracle.adf.controller.internal.binding.RegionUtils.getCurrentBindingContainer(RegionUtils.java:96)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.getCurrentBindingContainer(TaskFlowRegionModelViewPort.java:1093)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelLocal.getCurrentBindingContainer(TaskFlowRegionModelLocal.java:12)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.doProcessBeginRegion(TaskFlowRegionModelViewPort.java:280)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.processBeginRegion(TaskFlowRegionModelViewPort.java:157)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelLocal.processBeginRegion(TaskFlowRegionModelLocal.java:12)
at oracle.adf.controller.internal.binding.TaskFlowRegionController.doRegionRefresh(TaskFlowRegionController.java:224)
at oracle.adf.controller.internal.binding.TaskFlowRegionController.refreshRegion(TaskFlowRegionController.java:119)
at oracle.adf.model.binding.DCBindingContainer.internalRefreshControl(DCBindingContainer.java:3211)
at oracle.adf.model.binding.DCBindingContainer.refresh(DCBindingContainer.java:2883)
at oracle.adf.controller.v2.lifecycle.PageLifecycleImpl.prepareRender(PageLifecycleImpl.java:565)
at oracle.adf.controller.faces.lifecycle.FacesPageLifecycle.prepareRender(FacesPageLifecycle.java:82)
at oracle.adf.controller.v2.lifecycle.Lifecycle$9.execute(Lifecycle.java:224)
at oracle.adfinternal.controller.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:197)
at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.access$400(ADFPhaseListener.java:34)
at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener$5.before(ADFPhaseListener.java:516)
at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.beforePhase(ADFPhaseListener.java:76)
at oracle.adfinternal.controller.faces.lifecycle.ADFLifecyclePhaseListener.beforePhase(ADFLifecyclePhaseListener.java:44)
at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:378)
at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:237)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
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:208)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:128)
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.wcps.client.PersonalizationFilter.doFilter(PersonalizationFilter.java:75)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.webcenter.content.integration.servlets.ContentServletFilter.doFilter(ContentServletFilter.java:168)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:180)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:163)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
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:2277)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
<LifecycleImpl> <_handleException> ADF_FACES-60098:Faces lifecycle receives unhandled exceptions in phase RENDER_RESPONSE 6
java.lang.NullPointerException
at oracle.adf.model.binding.DCBindingContainerDef.createExecutables(DCBindingContainerDef.java:740)
at oracle.adf.model.binding.DCBindingContainerDef.initializeBindingContainer(DCBindingContainerDef.java:872)
at oracle.adf.model.binding.DCBindingContainerDef.createBindingContainer(DCBindingContainerDef.java:1092)
at oracle.adf.controller.internal.binding.RegionUtils.findOrCreateBindingContainer(RegionUtils.java:140)
at oracle.adf.controller.internal.binding.RegionUtils.getCurrentBindingContainer(RegionUtils.java:96)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.getCurrentBindingContainer(TaskFlowRegionModelViewPort.java:1093)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelLocal.getCurrentBindingContainer(TaskFlowRegionModelLocal.java:12)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.doProcessBeginRegion(TaskFlowRegionModelViewPort.java:280)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelViewPort.processBeginRegion(TaskFlowRegionModelViewPort.java:157)
at oracle.adf.controller.internal.binding.TaskFlowRegionModelLocal.processBeginRegion(TaskFlowRegionModelLocal.java:12)
at oracle.adf.controller.internal.binding.TaskFlowRegionController.doRegionRefresh(TaskFlowRegionController.java:224)
at oracle.adf.controller.internal.binding.TaskFlowRegionController.refreshRegion(TaskFlowRegionController.java:119)
at oracle.adf.model.binding.DCBindingContainer.internalRefreshControl(DCBindingContainer.java:3211)
at oracle.adf.model.binding.DCBindingContainer.refresh(DCBindingContainer.java:2883)
at oracle.adf.controller.v2.lifecycle.PageLifecycleImpl.prepareRender(PageLifecycleImpl.java:565)
at oracle.adf.controller.faces.lifecycle.FacesPageLifecycle.prepareRender(FacesPageLifecycle.java:82)
at oracle.adf.controller.v2.lifecycle.Lifecycle$9.execute(Lifecycle.java:224)
at oracle.adfinternal.controller.lifecycle.LifecycleImpl.executePhase(LifecycleImpl.java:197)
at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.access$400(ADFPhaseListener.java:34)
at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener$5.before(ADFPhaseListener.java:516)
at oracle.adfinternal.controller.faces.lifecycle.ADFPhaseListener.beforePhase(ADFPhaseListener.java:76)
at oracle.adfinternal.controller.faces.lifecycle.ADFLifecyclePhaseListener.beforePhase(ADFLifecyclePhaseListener.java:44)
at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl._executePhase(LifecycleImpl.java:378)
at oracle.adfinternal.view.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:237)
at javax.faces.webapp.FacesServlet.service(FacesServlet.java:266)
at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:300)
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:208)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.adfinternal.view.faces.webapp.rich.RegistrationFilter.doFilter(RegistrationFilter.java:128)
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.wcps.client.PersonalizationFilter.doFilter(PersonalizationFilter.java:75)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.webcenter.content.integration.servlets.ContentServletFilter.doFilter(ContentServletFilter.java:168)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.adf.library.webapp.LibraryFilter.doFilter(LibraryFilter.java:180)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.security.jps.ee.http.JpsAbsFilter$1.run(JpsAbsFilter.java:119)
at java.security.AccessController.doPrivileged(Native Method)
at oracle.security.jps.util.JpsSubject.doAsPrivileged(JpsSubject.java:315)
at oracle.security.jps.ee.util.JpsPlatformUtil.runJaasMode(JpsPlatformUtil.java:460)
at oracle.security.jps.ee.http.JpsAbsFilter.runJaasMode(JpsAbsFilter.java:103)
at oracle.security.jps.ee.http.JpsAbsFilter.doFilter(JpsAbsFilter.java:171)
at oracle.security.jps.ee.http.JpsFilter.doFilter(JpsFilter.java:71)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at oracle.dms.servlet.DMSServletFilter.doFilter(DMSServletFilter.java:163)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.RequestEventsFilter.doFilter(RequestEventsFilter.java:27)
at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:56)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.wrapRun(WebAppServletContext.java:3715)
at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3681)
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:2277)
at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2183)
at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1454)
at weblogic.work.ExecuteThread.execute(ExecuteThread.java:209)
at weblogic.work.ExecuteThread.run(ExecuteThread.java:178)
<Feb 28, 2013 12:42:40 PM IST> <Error> <HTTP> <BEA-101020> <[ServletContext@162032[app:Sales module:Sales-SalesForecastingForecastsPublicUiFuse-context-root path:/Sales-SalesForecastingForecastsPublicUiFuse-context-root spec-version:2.5]] Servlet failed with Exception
java.lang.NullPointerException
at oracle.adf.model.binding.DCBindingContainerDef.createExecutables(DCBindingContainerDef.java:740)
at oracle.adf.model.binding.DCBindingContainerDef.initializeBindingContainer(DCBindingContainerDef.java:872)
at oracle.adf.model.binding.DCBindingContainerDef.createBindingContainer(DCBindingContainerDef.java:1092)
at oracle.adf.controller.internal.binding.RegionUtils.findOrCreateBindingContainer(RegionUtils.java:140)
at oracle.adf.controller.internal.binding.RegionUtils.getCurrentBindingContainer(RegionUtils.java:96)
Truncated. see log file for complete stacktrace
>
Thanks,
James

Hi,
it's difficult to say what is wrong while creating the region. pls read out this doc http://docs.oracle.com/cd/E21764_01/web.1111/b31974/taskflows_regions.htm for the correct steps. you can also paste your code.
~Abhijit

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