I have a rather weird problem, which I've reached the end of my limit of
expertise. On our site, I've enabled the rss feeds, and currently all the feeds
for each community and collection (and the whole site), on the JSPUI side are
working.
The problem is the manakin side. Yesterday, there were only one community feed,
and two collection feeds working, while all the other feeds were giving an error
(I've included it below). Today, after I've restarted tomcat, three different
collection feeds are working now and all the others are gone. It seems to be
pretty random, some of them are big collections, some of them are small.
I traced it to com.sun.syndication.io.impl.RSS20Generator where it seems to be
something with the description, but all the collections and communities have
descriptions, and if they didn't, I'm assuming that the JSPUI would have made a
fuss.
Any help with this problem would be greatly appreciated.
Thanks
Jennifer
org.apache.cocoon.ProcessingException: Failed to process pipeline
at <map:serialize type="xml"> -
file:/usr/local/dspace/tomcat/webapps/manakindev/sitemap.xmap:301:32
at <map:transform type="i18n"> -
file:/usr/local/dspace/tomcat/webapps/manakindev/sitemap.xmap:297:33
at <map:generate type="DSpaceFeedGenerator"> -
file:/usr/local/dspace/tomcat/webapps/manakindev/sitemap.xmap:293:46
at
org.apache.cocoon.ProcessingException.throwLocated(ProcessingException.java:144)
at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.handleException(AbstractProcessingPipeline.java:951)
at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:381)
at
org.apache.cocoon.components.pipeline.AbstractProcessingPipeline.process(AbstractProcessingPipeline.java:480)
at
org.apache.cocoon.components.treeprocessor.sitemap.SerializeNode.invoke(SerializeNode.java:120)
at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:46)
at
org.apache.cocoon.components.treeprocessor.sitemap.PreparableMatchNode.invoke(PreparableMatchNode.java:130)
at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
at
org.apache.cocoon.components.treeprocessor.sitemap.PipelineNode.invoke(PipelineNode.java:142)
at
org.apache.cocoon.components.treeprocessor.AbstractParentProcessingNode.invokeNodes(AbstractParentProcessingNode.java:68)
at
org.apache.cocoon.components.treeprocessor.sitemap.PipelinesNode.invoke(PipelinesNode.java:92)
at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:234)
at
org.apache.cocoon.components.treeprocessor.ConcreteTreeProcessor.process(ConcreteTreeProcessor.java:176)
at
org.apache.cocoon.components.treeprocessor.TreeProcessor.process(TreeProcessor.java:252)
at org.apache.cocoon.Cocoon.process(Cocoon.java:686)
at
org.apache.cocoon.servlet.CocoonServlet.service(CocoonServlet.java:1153)
at org.dspace.app.xmlui.DSpaceCocoonServlet.service(Unknown Source)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
at
org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:190)
at
org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:283)
at
org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:767)
at
org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:697)
at
org.apache.jk.common.ChannelSocket$SocketConnection.runIt(ChannelSocket.java:889)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:686)
at java.lang.Thread.run(Thread.java:619)
Caused by: java.lang.NullPointerException
at
com.sun.syndication.io.impl.RSS20Generator.populateItem(RSS20Generator.java:71)
at
com.sun.syndication.io.impl.RSS090Generator.addItem(RSS090Generator.java:202)
at
com.sun.syndication.io.impl.RSS090Generator.addItems(RSS090Generator.java:195)
at
com.sun.syndication.io.impl.RSS091UserlandGenerator.addChannel(RSS091UserlandGenerator.java:81)
at
com.sun.syndication.io.impl.RSS091UserlandGenerator.populateFeed(RSS091UserlandGenerator.java:72)
at
com.sun.syndication.io.impl.RSS090Generator.generate(RSS090Generator.java:56)
at
com.sun.syndication.io.WireFeedOutput.outputJDom(WireFeedOutput.java:193)
at
com.sun.syndication.io.WireFeedOutput.outputW3CDom(WireFeedOutput.java:158)
at org.dspace.app.xmlui.DSpaceFeedGenerator.generate(Unknown
Source)
at
org.apache.cocoon.components.pipeline.impl.AbstractCachingProcessingPipeline.processXMLPipeline(AbstractCachingProcessingPipeline.java:369)
... 30 more
Jennifer Whalan I Systems Support Officer
Northern Territory Library I Department of Local Government, Housing and Sport
p...(08) 8922 0757 I www.ntl.nt.gov.au
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