[Building Sakai] Lessons Tool NullPointerException

Jaco Gillman jaco at opencollab.co.za
Thu Jan 9 04:53:17 PST 2014


Hi all

We have installed a new Sakai 2.9.3 version and came across the
NullPointerException
exception below. Have someone else came across the same issue?


stack trace:


org.sakaiproject.portal.api.PortalHandlerException:
org.sakaiproject.tool.api.ToolException: org.apache.jasper.JasperException:
An exception occurred processing JSP page /jsp/dfReviseTopicSettingsAttach.jsp
at line 89

86:                     </h:panelGrid>
87:                     <%-- //designNote: rendered attr below should
resolve to false only if there is no prior short description
88:                                     and if there is server property
(TBD) saying not to use it  - below just checking for pre-existing short
description--%>
89:                     <h:panelGrid columns="1"  columnClasses="longtext"
rendered="#{ForumTool.showTopicShortDescription}">
90:                             <h:panelGroup>
91:                                     <h:outputLabel id="outputLabel1"
for="topic_shortDescription"  value="#{msgs.cdfm_shortDescription}" />
92:


Stacktrace:
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.
doGet(SkinnableCharonPortal.java:894)
caused by: org.sakaiproject.tool.api.ToolException:
org.apache.jasper.JasperException:
An exception occurred processing JSP page /jsp/dfReviseTopicSettingsAttach.jsp
at line 89

86:                     </h:panelGrid>
87:                     <%-- //designNote: rendered attr below should
resolve to false only if there is no prior short description
88:                                     and if there is server property
(TBD) saying not to use it  - below just checking for pre-existing short
description--%>
89:                     <h:panelGrid columns="1"  columnClasses="longtext"
rendered="#{ForumTool.showTopicShortDescription}">
90:                             <h:panelGroup>
91:                                     <h:outputLabel id="outputLabel1"
for="topic_shortDescription"  value="#{msgs.cdfm_shortDescription}" />
92:


Stacktrace:
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(
SkinnableCharonPortal.java:1483)
caused by: org.apache.jasper.JasperException: An exception occurred
processing JSP page /jsp/dfReviseTopicSettingsAttach.jsp at line 89

86:                     </h:panelGrid>
87:                     <%-- //designNote: rendered attr below should
resolve to false only if there is no prior short description
88:                                     and if there is server property
(TBD) saying not to use it  - below just checking for pre-existing short
description--%>
89:                     <h:panelGrid columns="1"  columnClasses="longtext"
rendered="#{ForumTool.showTopicShortDescription}">
90:                             <h:panelGroup>
91:                                     <h:outputLabel id="outputLabel1"
for="topic_shortDescription"  value="#{msgs.cdfm_shortDescription}" />
92:


Stacktrace:
    at org.apache.jasper.servlet.JspServletWrapper.service(
JspServletWrapper.java:455)
caused by: javax.servlet.ServletException: javax.servlet.jsp.JspException:
javax.faces.el.EvaluationException: javax.faces.el.EvaluationException:
Error getting property 'showTopicShortDescription' from bean of type
org.sakaiproject.tool.messageforums.DiscussionForumTool:
java.lang.NullPointerException
    at org.apache.jasper.runtime.PageContextImpl.handlePageException(
PageContextImpl.java:841)
caused by: javax.faces.el.EvaluationException:
javax.faces.el.EvaluationException:
Error getting property 'showTopicShortDescription' from bean of type
org.sakaiproject.tool.messageforums.DiscussionForumTool:
java.lang.NullPointerException
    at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:143)
caused by: javax.faces.el.EvaluationException: Error getting property
'showTopicShortDescription' from bean of type org.sakaiproject.tool.
messageforums.DiscussionForumTool: java.lang.NullPointerException
    at com.sun.faces.el.impl.ArraySuffix.evaluate(ArraySuffix.java:187)
caused by: java.lang.NullPointerException
    at org.sakaiproject.tool.messageforums.DiscussionForumTool.
getShowTopicShortDescription(DiscussionForumTool.java:7789)
    at sun.reflect.GeneratedMethodAccessor2287.invoke(null:-1)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(
DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at com.sun.faces.el.PropertyResolverImpl.getValue(
PropertyResolverImpl.java:99)
    at com.sun.faces.el.impl.ArraySuffix.evaluate(ArraySuffix.java:187)
    at com.sun.faces.el.impl.ComplexValue.evaluate(ComplexValue.java:171)
    at com.sun.faces.el.impl.ExpressionEvaluatorImpl.evaluate(
ExpressionEvaluatorImpl.java:263)
    at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:160)
    at com.sun.faces.el.ValueBindingImpl.getValue(ValueBindingImpl.java:143)
    at javax.faces.component.UIComponentBase.isRendered(
UIComponentBase.java:335)
    at javax.faces.webapp.UIComponentTag.shouldBeSuppressed(
UIComponentTag.java:1289)
    at javax.faces.webapp.UIComponentTag.doStartTag(UIComponentTag.java:497)
    at com.sun.faces.taglib.html_basic.PanelGridTag.doStartTag(
PanelGridTag.java:442)
    at org.apache.jsp.jsp.dfReviseTopicSettingsAttach_jsp._jspx_meth_h_
005fpanelGrid_005f1(dfReviseTopicSettingsAttach_jsp.java:1502)
    at org.apache.jsp.jsp.dfReviseTopicSettingsAttach_jsp._jspService(
dfReviseTopicSettingsAttach_jsp.java:451)
    at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at org.apache.jasper.servlet.JspServletWrapper.service(
JspServletWrapper.java:432)
    at org.apache.jasper.servlet.JspServlet.serviceJspFile(
JspServlet.java:390)
    at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:334)
    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.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:412)
    at org.apache.catalina.core.ApplicationDispatcher.forward(
ApplicationDispatcher.java:339)
    at com.sun.faces.context.ExternalContextImpl.dispatch(
ExternalContextImpl.java:346)
    at com.sun.faces.application.ViewHandlerImpl.renderView(
ViewHandlerImpl.java:152)
    at org.sakaiproject.jsf.app.SakaiViewHandler.renderView(
SakaiViewHandler.java:159)
    at com.sun.faces.lifecycle.RenderResponsePhase.execute(
RenderResponsePhase.java:107)
    at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:245)
    at com.sun.faces.lifecycle.LifecycleImpl.render(LifecycleImpl.java:137)
    at javax.faces.webapp.FacesServlet.service(FacesServlet.java:214)
    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:412)
    at org.apache.catalina.core.ApplicationDispatcher.forward(
ApplicationDispatcher.java:339)
    at org.sakaiproject.tool.messageforums.MessageForumsFilePickerServlet
.dispatch(MessageForumsFilePickerServlet.java:166)
    at org.sakaiproject.jsf.util.JsfTool.doGet(JsfTool.java:241)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    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)
    at org.sakaiproject.tool.impl.ActiveToolComponent$MyActiveTool.forward(
ActiveToolComponent.java:511)
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.forwardTool(
SkinnableCharonPortal.java:1483)
    at org.sakaiproject.portal.charon.handlers.ToolHandler.
doTool(ToolHandler.java:213)
    at org.sakaiproject.portal.charon.handlers.ToolHandler.
doGet(ToolHandler.java:96)
    at org.sakaiproject.portal.charon.SkinnableCharonPortal.
doGet(SkinnableCharonPortal.java:894)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:621)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:728)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:305)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:210)
    at org.sakaiproject.util.RequestFilter.doFilter(RequestFilter.java:695)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(
ApplicationFilterChain.java:243)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(
ApplicationFilterChain.java:210)
    at org.apache.catalina.core.StandardWrapperValve.invoke(
StandardWrapperValve.java:222)
    at org.apache.catalina.core.StandardContextValve.invoke(
StandardContextValve.java:123)
    at org.apache.catalina.authenticator.AuthenticatorBase.invoke(
AuthenticatorBase.java:502)
    at org.apache.catalina.core.StandardHostValve.invoke(
StandardHostValve.java:171)
    at org.apache.catalina.valves.ErrorReportValve.invoke(
ErrorReportValve.java:100)
    at org.apache.catalina.valves.AccessLogValve.invoke(
AccessLogValve.java:953)
    at org.apache.catalina.core.StandardEngineValve.invoke(
StandardEngineValve.java:118)
    at org.apache.catalina.connector.CoyoteAdapter.service(
CoyoteAdapter.java:408)
    at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:200)
    at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.
process(AbstractProtocol.java:603)
    at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.
run(JIoEndpoint.java:310)
    at java.util.concurrent.ThreadPoolExecutor$Worker.
runTask(ThreadPoolExecutor.java:895)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(
ThreadPoolExecutor.java:918)
    at java.lang.Thread.run(Thread.java:662)


Regards,

*Jaco Gillman*

Java Developer

opencollab

*Tel*: +27 21 970 4017  |  *Fax*: +27 21 914 3098

*Email*: jaco at opencollab.co.za  |  *Skype*: gillmanjc

*Web*: www.opencollab.co.za

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