[Building Sakai] Error on Export from Lesson tool

[Charles Hedrick]

What is the line of code? Here’s the region:

          for (ForumItem item: items) {

            ret.add(item.id);

x           List<ForumAttachment> attachments = item.attachments;
            for (ForumAttachment attach: attachments) {
                // this code is to identify attachments that aren't in the normal                                              
                // site resources. In that case we have to make a copy of it                                                   
                String url = null;

In my copy, line 219 is what I’ve marked with an X. I don’t see how it could be null, since ret.add(item.id) would fail. But if the line numbers are off, for the For statement is failing then you want to add an if


            ret.add(item.id);

            List<ForumAttachment> attachments = item.attachments;
            if (attachments != null)
            for (ForumAttachment attach: attachments) {
                // this code is to identify attachments that aren't in the normal                                            
                // site resources. In that case we have to make a copy of it                                                 
                String url = null;


On May 6, 2014, at 4:08 PM, Omer A Piperdi <omer at rice.edu> wrote:

> We are seeing the following error message when a user choose 'Export CC' 
> on Lesson tool. (on sakai 2.9.x with Lessonbuilder 1.4.3-SNAPSHOT on 
> Oracle).
> 
> Anyone see this before??
> 
> Thanks
> Omer
> 
> 
> ----
> '[An error occurred handling this RSF request]'
> 
> With following stack trace in catalina.out
> 
> 2014-05-06 14:58:28,667  WARN http-bio-8443-exec-328 PonderUtilCore - 
> Error servicing SakaiRSF request
> Target exception of class java.lang.NullPointerException
> Successive lines until stack trace show causes progressing to exception 
> site:
> Error invoking init method handle on bean rootHandlerBean
> java.lang.NullPointerException
>         at 
> org.sakaiproject.lessonbuildertool.ccexport.ForumsExport.getEntitiesInSite(ForumsExport.java:219)
>         at 
> org.sakaiproject.lessonbuildertool.ccexport.CCExport.addAllForums(CCExport.java:456)
>         at 
> org.sakaiproject.lessonbuildertool.ccexport.CCExport.doExport(CCExport.java:193)
>         at 
> org.sakaiproject.lessonbuildertool.tool.beans.ReportHandlerHook.handle(ReportHandlerHook.java:65)
>         at 
> org.sakaiproject.lessonbuilder.util.RootHandlerBeanOverride.handle(RootHandlerBeanOverride.java:27)
>         at sun.reflect.GeneratedMethodAccessor3351.invoke(Unknown Source)
>         at 
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
>         at java.lang.reflect.Method.invoke(Method.java:601)
>         at 
> uk.org.ponder.reflect.JDKReflectiveCache.invokeMethod(JDKReflectiveCache.java:23)
>         at 
> uk.org.ponder.reflect.JDKReflectiveCache.invokeMethod(JDKReflectiveCache.java:17)
>         at 
> uk.org.ponder.reflect.JDKReflectiveCache.invokeMethod(JDKReflectiveCache.java:77)
>         at 
> uk.org.ponder.rsac.support.RSACBeanLocatorImpl.createBean(RSACBeanLocatorImpl.java:553)
>         at 
> uk.org.ponder.rsac.support.RSACBeanLocatorImpl.access$000(RSACBeanLocatorImpl.java:75)
>         at 
> uk.org.ponder.rsac.support.RSACBeanLocatorImpl$1.run(RSACBeanLocatorImpl.java:449)
>         at 
> uk.org.ponder.rsac.RSACErrorBridge.invokeRunnable(RSACErrorBridge.java:38)
>         at 
> uk.org.ponder.rsac.support.RSACBeanLocatorImpl.createBean(RSACBeanLocatorImpl.java:447)
>         at 
> uk.org.ponder.rsac.support.RSACBeanLocatorImpl.getLocalBean(RSACBeanLocatorImpl.java:348)
>         at 
> uk.org.ponder.rsac.support.RSACBeanLocatorImpl.getBean(RSACBeanLocatorImpl.java:379)
>         at 
> uk.org.ponder.rsac.support.PerRequestInfo$1.locateBean(PerRequestInfo.java:49)
>         at 
> uk.ac.cam.caret.sakai.rsf.servlet.ReasonableSakaiServlet.service(ReasonableSakaiServlet.java:65)
>         at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
>         at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
>         at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
>         at 
> org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:634)
>         at 
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
>         at 
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
>         at 
> org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:749)
>         at 
> org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:487)
>         at 
> org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
>         at 
> org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:339)
> 
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