Florian,
Thanks for replying: my nutch-site.xml under webapps was wrong.
Correcting it gets me a little further. However, whether I point to an
OWL file locally (with file:) or remotely (with http://), I get the
following error (under Root Cause):
with
<name>plugin.includes</name>
<value>nutch-extensionpoints|protocol-file|protocol-http|ontology|languageidentifier|analysis-(fr|en|de)|urlfilter-regex|parse-(text|pdf|mspowerpoint|msword|msexcel|rtf|rss|html|zip)|index-basic|query-(basic|site|url)|lib-jakarta-poi|lib-lucene-analyzers|urlfilter-regex|index-basic|query-(basic|site|url)|summary-basic|iblog|scoring-opic</value>
java.lang.NoSuchFieldError: actualValueType
at
com.hp.hpl.jena.datatypes.xsd.XSDDatatype.convertValidatedDataValue(XSDDatatype.java:371)
at com.hp.hpl.jena.datatypes.xsd.XSDDatatype.parse(XSDDatatype.java:250)
at
com.hp.hpl.jena.graph.impl.LiteralLabel.setValue(LiteralLabel.java:166)
at com.hp.hpl.jena.graph.impl.LiteralLabel.<init>(LiteralLabel.java:82)
at com.hp.hpl.jena.graph.Node.createLiteral(Node.java:151)
at com.hp.hpl.jena.rdf.arp.JenaReader.convert(JenaReader.java:147)
at com.hp.hpl.jena.rdf.arp.JenaReader.convert(JenaReader.java:169)
at
com.hp.hpl.jena.rdf.arp.JenaReader$JRStatementHandler.statement(JenaReader.java:57)
at com.hp.hpl.jena.rdf.arp.ARPResource.tripleLit(ARPResource.java:190)
at com.hp.hpl.jena.rdf.arp.ARPResource.triple(ARPResource.java:172)
at
com.hp.hpl.jena.rdf.arp.ARPResource.setPredObject(ARPResource.java:146)
at
com.hp.hpl.jena.rdf.arp.ARPResource.setPredicateObject(ARPResource.java:127)
at
com.hp.hpl.jena.rdf.arp.ParserSupport.createTriple(ParserSupport.java:315)
at
com.hp.hpl.jena.rdf.arp.RDFParser.propertyEltIdAndValue(RDFParser.java:692)
at com.hp.hpl.jena.rdf.arp.RDFParser.propertyElt(RDFParser.java:647)
at com.hp.hpl.jena.rdf.arp.RDFParser.typedNode(RDFParser.java:984)
at com.hp.hpl.jena.rdf.arp.RDFParser.description(RDFParser.java:429)
at com.hp.hpl.jena.rdf.arp.RDFParser.obj(RDFParser.java:346)
at com.hp.hpl.jena.rdf.arp.RDFParser.rdf(RDFParser.java:326)
at com.hp.hpl.jena.rdf.arp.RDFParser.rdfFileSub(RDFParser.java:107)
at com.hp.hpl.jena.rdf.arp.RDFParser.rdfFile(RDFParser.java:99)
at com.hp.hpl.jena.rdf.arp.ARPFilter.parse(ARPFilter.java:314)
at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:221)
at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:209)
at com.hp.hpl.jena.rdf.arp.JenaReader.read(JenaReader.java:261)
at com.hp.hpl.jena.rdf.model.impl.ModelCom.read(ModelCom.java:206)
at
com.hp.hpl.jena.ontology.OntDocumentManager.read(OntDocumentManager.java:986)
at
com.hp.hpl.jena.ontology.OntDocumentManager.findMetadata(OntDocumentManager.java:807)
at
com.hp.hpl.jena.ontology.OntDocumentManager.initialiseMetadata(OntDocumentManager.java:781)
at
com.hp.hpl.jena.ontology.OntDocumentManager.<init>(OntDocumentManager.java:171)
at
com.hp.hpl.jena.ontology.OntDocumentManager.<init>(OntDocumentManager.java:155)
at
com.hp.hpl.jena.ontology.OntDocumentManager.<clinit>(OntDocumentManager.java:108)
at
com.hp.hpl.jena.ontology.OntModelSpec.getDocumentManager(OntModelSpec.java:247)
at
com.hp.hpl.jena.ontology.impl.OntModelImpl.getDocumentManager(OntModelImpl.java:174)
at
com.hp.hpl.jena.ontology.impl.OntModelImpl.<init>(OntModelImpl.java:145)
at
com.hp.hpl.jena.ontology.impl.OntModelImpl.<init>(OntModelImpl.java:116)
at
com.hp.hpl.jena.rdf.model.ModelFactory.createOntologyModel(ModelFactory.java:375)
at
org.apache.nutch.ontology.jena.OntologyImpl.<init>(OntologyImpl.java:81)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at
sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)
at
sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)
at java.lang.reflect.Constructor.newInstance(Constructor.java:494)
at java.lang.Class.newInstance0(Class.java:350)
at java.lang.Class.newInstance(Class.java:303)
at
org.apache.nutch.plugin.Extension.getExtensionInstance(Extension.java:151)
at
org.apache.nutch.ontology.OntologyFactory.getOntology(OntologyFactory.java:64)
at org.apache.jsp.search_jsp._jspService(search_jsp.java:118)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:92)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
at
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:162)
at
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:240)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:187)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at
org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at
org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
at
org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at
org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at
org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at
org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595)
Any thoughts from anyone out there?
Brian
On Fri, 22 Sep 2006 09:43:51 +0200, "Florian Fricker"
<[EMAIL PROTECTED]> said:
> Hey Brian,
>
> Your nutch-site.xml has two parts for ontology.
>
> First Part:
>
> <property>
> <name>extension.ontology.extension-name</name>
> <value>org.apache.nutch.ontology.jena.OntologyImpl</value>
> <description>Loads the Ontology plugin</description>
> </property>
>
> Second Part:
>
> <property>
> <name>extension.ontology.urls</name>
> <value>file:/path/to/owl/file or http://path/to/owl/file</value>
> <description>Shows the owl file</description>
> </property>
>
> Then add the onotology plugin to the nutch plugin section. It should
> look like this:
>
>
> <property>
> <name>plugin.includes</name>
>
> <value>nutch-extensionpoints|protocol-file|protocol-http|ontology|languageidentifier|analysis-(fr|en|de)|
>
> urlfilter-regex|parse-(text|pdf|mspowerpoint|msword|msexcel|rtf|rss|html|zip)|index-basic|
>
> query-(basic|site|url)|lib-jakarta-poi|lib-lucene-analyzers|scoring-opic</value>
> </property>
>
> That's it...
>
> Regards
>
>
> Brian Ulicny wrote:
> > I'm trying to get the Ontology plugin to work in an 0.8 environment.
> >
> > I set extension.ontology.extension-name to
> > org.apache.nutch.ontology.jena.OntologyImpl
> > This seemed to be the correct thing to do according to nutch-default.xml
> > which says:
> >
> > <description>Use the specified online ontology extension. If empty,
> > the first available extension will be used. The "name" here refers to
> > an 'id'
> > attribute of the 'implementation' element in the plugin descriptor XML
> > file.</description>
> >
> > The plugin.xml for ontology is:
> >
> > <plugin
> > id="ontology"
> > name="Ontology Plug-in"
> > version="1.0.0"
> > provider-name="nutch.org">
> >
> >
> > <runtime>
> > <library name="ontology.jar">
> > <export name="*"/>
> > </library>
> >
> > <library name="commons-logging-1.0.3.jar"/>
> > <library name="icu4j_2_6_1.jar"/>
> > <library name="jena-2.1.jar"/>
> >
> > </runtime>
> >
> > <requires>
> > <import plugin="nutch-extensionpoints"/>
> > </requires>
> >
> > <!-- attribute "point" is the plugin interface class -->
> > <!-- seems kinda redundant to have to define the point here too -->
> > <extension id="org.apache.nutch.ontology.jena"
> > name="Ontology Model Loader"
> > point="org.apache.nutch.ontology.Ontology">
> >
> > <!-- define all the classes that implement the point defined above
> > -->
> > <implementation id="org.apache.nutch.ontology.jena.OntologyImpl"
> > class="org.apache.nutch.ontology.jena.OntologyImpl">
> > <parameter name="pathSuffix" value=""/>
> > </implementation>
> >
> > </extension>
> >
> > </plugin>
> >
> >
> > I then set the extension.ontology.urls property to a valid (external)
> > OWL url.
> >
> > However, I get this warning, and no ontologies are loaded:
> >
> > 6 WARN OntologyFactory - Ontology extension not found:
> > 'org.apache.nutch.ontology.jena.OntologyImpl', trying the default
> >
> > What am I doing wrong?
> >
> > B Ulicny
> >
>
>
> --
> Florian Fricker [EMAIL PROTECTED]
> Wyona Inc. - Open Source Content Management - Apache Lenya
> http://www.wyona.com http://lenya.apache.org
>
--
Brian Ulicny
[EMAIL PROTECTED]
