[Building Sakai] Samigo: Failed Import of Test Questions Throws Exception in Question Pool

[Stoufer,R M]

We have an instructor who attempted to upload a file created in WebCT to a Test/Quizzes question pool and it failed.  Now an exception is thrown everytime he tries to do something with the question pool.

I saw a virtually identical situation in the January 2010 archives which recommended looking at the sam_questionpool_t table.  I didn't find how the issue was resolved though.  Could anyone shed some light on the how to fix this problem?

The trace follows:

org.sakaiproject.portal.api.PortalHandlerException: org.sakaiproject.tool.api.ToolException
    at org.sakaiproject.portal.charon.handlers.ToolHandler.doPost(ToolHandler.java:70)
caused by: org.sakaiproject.tool.api.ToolException
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1216)
caused by: javax.servlet.ServletException
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
caused by: java.lang.NullPointerException
    at org.sakaiproject.tool.assessment.ui.bean.questionpool.QuestionPoolBean$titleComparator.compare(QuestionPoolBean.java:227)
    at java.util.Arrays.mergeSort(Arrays.java:1284)
    at java.util.Arrays.sort(Arrays.java:1223)
    at java.util.Collections.sort(Collections.java:159)
    at org.sakaiproject.tool.assessment.ui.bean.questionpool.QuestionPoolBean.sortQpoolsByProperty(QuestionPoolBean.java:241)
    at org.sakaiproject.tool.assessment.ui.bean.questionpool.QuestionPoolBean.sortPoolByLevel(QuestionPoolBean.java:1975)
    at org.sakaiproject.tool.assessment.ui.bean.questionpool.QuestionPoolBean.setQpDataModelByLevel(QuestionPoolBean.java:2071)
    at org.sakaiproject.tool.assessment.ui.listener.questionpool.QuestionPoolListener.processAction(QuestionPoolListener.java:50)
    at javax.faces.event.ActionEvent.processListener(ActionEvent.java:57)
    at javax.faces.component.UIComponentBase.broadcast(UIComponentBase.java:649)
    at javax.faces.component.UICommand.broadcast(UICommand.java:297)
    at javax.faces.component.UIViewRoot.broadcastEvents(UIViewRoot.java:267)
    at javax.faces.component.UIViewRoot.processDecodes(UIViewRoot.java:307)
    at com.sun.faces.lifecycle.ApplyRequestValuesPhase.execute(ApplyRequestValuesPhase.java:79)
    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 org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:565)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:461)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:399)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
    at org.sakaiproject.jsf.util.SamigoJsfTool.dispatch(SamigoJsfTool.java:285)
    at org.sakaiproject.jsf.util.JsfTool.doPost(JsfTool.java:256)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:679)
    at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:461)
    at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:364)
    at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:301)
    at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(ActiveToolComponent.java:479)
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(SkinnableCharonPortal.java:1216)
    at org.sakaiproject.portal.charon.handlers.ToolHandler.doTool(ToolHandler.java:188)
    at org.sakaiproject.portal.charon.handlers.ToolHandler.doGet(ToolHandler.java:93)
    at org.sakaiproject.portal.charon.handlers.ToolHandler.doPost(ToolHandler.java:70)
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.doPost(SkinnableCharonPortal.java:1059)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:647)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:616)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
    at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:200)
    at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:291)
    at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:775)
    at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:704)
    at org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:897)
    at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
    at java.lang.Thread.run(Thread.java:595)


user: dd70a870-84ff-43a2-a996-afd601f1617c

usage-session: 048ca573-79ba-495d-ab48-b89bf0e5bbeb

time: May 25, 2010 09:02:32


*******************************

R. Michael Stoufer
Computer Programmer/Analyst Manager
Office of Academic Technology
University of Florida
352-846-0583

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