Hi!
I have a form and a grid component on one of my pages (the grid is
outside the form). All operates normally (using Jetty) unless I leave
it for 10 minutes. If I then attempt to perform a submit I get the
Null Pointer Exception listed below. It only happens on pages with the
grid component. My Jetty session timeout (in webdefault.xml) is set
to 30 minutes.
I'm not quite sure how to proceed in tracking the problem down as the
error is taking place in Grid. The ten minutes suggests a timeout -
but where?
Help appreciated.
Thanks,
p.
java.lang.NullPointerException
Stack trace
*
org.apache.tapestry5.corelib.components.GridColumns.setupRender(GridColumns.java:112)
*
org.apache.tapestry5.corelib.components.GridColumns.setupRender(GridColumns.java)
*
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$13$1.run(ComponentPageElementImpl.java:495)
*
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.invoke(ComponentPageElementImpl.java:917)
*
org.apache.tapestry5.internal.structure.ComponentPageElementImpl.access$200(ComponentPageElementImpl.java:50)
*
org.apache.tapestry5.internal.structure.ComponentPageElementImpl$13.render(ComponentPageElementImpl.java:499)
*
org.apache.tapestry5.internal.services.RenderQueueImpl.run(RenderQueueImpl.java:72)
*
org.apache.tapestry5.internal.services.PageRenderQueueImpl.render(PageRenderQueueImpl.java:121)
*
org.apache.tapestry5.services.TapestryModule$19.renderMarkup(TapestryModule.java:1200)
*
org.apache.tapestry5.services.TapestryModule$29.renderMarkup(TapestryModule.java:1580)
*
org.apache.tapestry5.services.TapestryModule$28.renderMarkup(TapestryModule.java:1561)
*
org.apache.tapestry5.services.TapestryModule$27.renderMarkup(TapestryModule.java:1543)
*
org.apache.tapestry5.services.TapestryModule$26.renderMarkup(TapestryModule.java:1525)
*
org.apache.tapestry5.services.TapestryModule$25.renderMarkup(TapestryModule.java:1495)
*
org.apache.tapestry5.internal.services.PageMarkupRendererImpl.renderPageMarkup(PageMarkupRendererImpl.java:64)
*
org.apache.tapestry5.internal.services.PageResponseRendererImpl.renderPageResponse(PageResponseRendererImpl.java:57)
*
org.apache.tapestry5.internal.services.PageRenderRequestHandlerImpl.handle(PageRenderRequestHandlerImpl.java:59)
*
org.apache.tapestry5.services.TapestryModule$35.handle(TapestryModule.java:1779)
*
org.apache.tapestry5.internal.services.PageRenderDispatcher.process(PageRenderDispatcher.java:92)
*
org.apache.tapestry5.internal.services.PageRenderDispatcher.dispatch(PageRenderDispatcher.java:71)
*
org.apache.tapestry5.services.TapestryModule$17.service(TapestryModule.java:1029)
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