We aren't using the new multi-threaded aggregator. Our Jetspeed code is 2.1-dev and is from July-05-2006. The stack trace is correct. I can send you the full stack trace if you like.
Thanks, Raman -----Original Message----- From: David Sean Taylor [mailto:[EMAIL PROTECTED] Sent: Thursday, January 25, 2007 1:31 PM To: Jetspeed Users List Subject: Re: NullPointerException when calling PortletURLImpl.toString() in websphere 6.0 Are you using the SVN head? If the error is in the (ct instanceof Worker) block, then it would appears that you have the new multi-threaded aggregator enabled. However, the stack trace below doesn't quite follow. Is that the correct stack trace? Tallamraju, Raman wrote: > I traced it down to > org.apache.jetspeed.engine.servlet.ServletRequestImpl.java: > > public Object getAttribute( String name ) > { > Object value = null; > > // In parallel mode, first look up from the worker. > > Thread ct = Thread.currentThread(); > > if (ct instanceof Worker) > { > value = **** CurrentWorkerContext.getAttribute(name); ***** > } > > // If no attribute found, then look up from the request > if (null == value) > { > value = getAttributeInternal(name); > } > > return value; > } > > That's where the getAttribute call then moves to the worker thread > (Websphere's com.ibm.ws.webcontainer.srt.SRTServletRequest) which then > throws a NullPointerException. > > Hope this is helpful. > > Thanks, > Raman > >> -----Original Message----- >> From: Tallamraju, Raman >> Sent: Thursday, January 25, 2007 10:51 AM >> To: 'Jetspeed Users List'; Jetspeed Developers List >> Cc: Siva, Jawahar; Sie, Yang; Gile, Abeba >> Subject: NullPointerException when calling >> PortletURLImpl.toString() in websphere 6.0 >> >> Hi All, >> >> We're seeing some strange behavior when calling toString() on a >> PortletURLImpl object. Here are the details: >> >> We have a PortletURL class variable in one of our portlets that is set >> to response.createActionURL() in this portlet's doView method. In >> another method which is eventually called from doView (via a few calls >> up to doViews of the parent classes), we try to call toString() on >> this PortletURL object - this has been producing a >> NullPointerException for us lately even though the PortletURL object >> itself isn't null. >> >> We did some more digging and followed it up to Pluto's >> PortletURLImpl.toString() method. This method has the following code >> in it: >> >> PortletURLProvider urlProvider = >> InformationProviderAccess.getDynamicProvider(servletRequest).getPortle >> tURLProvider(portletWindow); >> >> We've identified the >> InformationProviderAccess.getDynamicProvider(servletRequest) call as >> being the culprit that's throwing the NullPointerException. This >> happens randomly (there seems to be some evidence that supports a >> relation to load - but not conclusive yet) and we don't know why. We >> did some searching online and looks like other users have seen this >> issue in the Websphere environment & they indicate that WAS's >> threading model might have something to do with it: >> >> http://www-128.ibm.com/developerworks/forums/dw_thread.jsp?forum=168&t >> hread=136143&cat=9 >> http://mail-archives.apache.org/mod_mbox/cocoon-dev/200309.mbox/%3C200 >> [EMAIL PROTECTED] >> http://www-128.ibm.com/developerworks/forums/dw_thread.jsp?message=174 >> 709&cat=10&thread=26484&treeDisplayType=expandtree&forum=176 >> >> Have any of you seen this issue? Any pointers about the cause/solution >> would be much appreciated. >> >> Thanks, >> Raman >> >> Here's our WAS info: >> >> IBM WebSphere Application Server - ND, 6.0.2.0 >> Build Number: o0526.07 >> >> This portlet happens to extend PortletSelector from Jetspeed 2.0 which >> basically uses gems.browser.BrowserPortlet. Here's the relevant >> portion of the stack trace: >> >> logs/bosPortal.log.1:2007-01-23 11:11:12,274 [WebContainer : 2] ERROR >> org.apache.portals.gems.browser.BrowserPortlet - : PortletInventory >> processAction caused exception. >> logs/bosPortal.log.1-java.lang.NullPointerException >> logs/bosPortal.log.1- at >> com.ibm.ws.webcontainer.srt.SRTServletRequest.getAttribute(SRTServletR >> equest.java(Compiled Code)) >> logs/bosPortal.log.1- at >> javax.servlet.ServletRequestWrapper.getAttribute(ServletRequestWrapper >> .java(Inlined Compiled Code)) >> logs/bosPortal.log.1- at >> org.apache.jetspeed.engine.servlet.ServletRequestImpl.getAttribute(Ser >> vletRequestImpl.java(Compiled Code)) >> logs/bosPortal.log.1- at >> org.apache.jetspeed.services.information.InformationProviderServiceImp >> l.getDynamicProvider(InformationProviderServiceImpl.java(Inlined >> Compiled Code)) >> logs/bosPortal.log.1- at >> org.apache.pluto.services.information.InformationProviderAccess.getDyn >> amicProvider(InformationProviderAccess.java(Inlined Compiled Code)) >> logs/bosPortal.log.1- at >> org.apache.pluto.core.impl.PortletURLImpl.toString(PortletURLImpl.java >> (Compiled Code)) >> logs/bosPortal.log.1- at >> org.apache.jetspeed.container.url.impl.JetspeedPortletURL.toString(Jet >> speedPortletURL.java(Compiled Code)) >> logs/bosPortal.log.1- at >> com.fmr.fimt.bosportal.portlet.portletinventory.PortletInventory.getRo >> ws(PortletInventory.java(Compiled Code)) >> logs/bosPortal.log.1- at >> com.fmr.fimt.bosportal.portlet.selector.PortletSelector.getRows(Portle >> tSelector.java(Compiled Code)) >> >> > -- David Sean Taylor Bluesunrise Software [EMAIL PROTECTED] [office] +01 707 773-4646 [mobile] +01 707 529 9194 --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
