[ http://issues.apache.org/jira/browse/NUTCH-287?page=all ]
Stefan Groschupf closed NUTCH-287:
----------------------------------
Resolution: Won't Fix
http://www.mail-archive.com/nutch-user%40lucene.apache.org/msg04696.html
> Exception when searching with sort
> ----------------------------------
>
> Key: NUTCH-287
> URL: http://issues.apache.org/jira/browse/NUTCH-287
> Project: Nutch
> Type: Bug
> Components: searcher
> Versions: 0.8-dev
> Reporter: Stefan Neufeind
> Priority: Critical
>
> Running a search with &sort=url works.
> But when using &sort=title I get the following exception.
> 2006-05-25 14:04:25 StandardWrapperValve[jsp]: Servlet.service() for servlet
> jsp threw exception
> java.lang.RuntimeException: Unknown sort value type!
> at
> org.apache.nutch.searcher.IndexSearcher.translateHits(IndexSearcher.java:157)
> at
> org.apache.nutch.searcher.IndexSearcher.search(IndexSearcher.java:95)
> at org.apache.nutch.searcher.NutchBean.search(NutchBean.java:239)
> at org.apache.jsp.search_jsp._jspService(search_jsp.java:257)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
> org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:324)
> at
> org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:292)
> at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:236)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:252)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:214)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:198)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:152)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:118)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:102)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:104)
> at
> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:520)
> at
> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:929)
> at
> org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:160)
> 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:684)
> at java.lang.Thread.run(Thread.java:595)
> What is in those lines is:
> WritableComparable sortValue; // convert value to writable
> if (sortField == null) {
> sortValue = new FloatWritable(scoreDocs[i].score);
> } else {
> Object raw = ((FieldDoc)scoreDocs[i]).fields[0];
> if (raw instanceof Integer) {
> sortValue = new IntWritable(((Integer)raw).intValue());
> } else if (raw instanceof Float) {
> sortValue = new FloatWritable(((Float)raw).floatValue());
> } else if (raw instanceof String) {
> sortValue = new UTF8((String)raw);
> } else {
> throw new RuntimeException("Unknown sort value type!");
> }
> }
> So I thought that maybe raw is an instance of something "strange" and tried
> raw.getClass().getName() or also raw.toString() to track the cause down - but
> that always resulted in a NullPointerException. So it seems I'm having raw
> being null for some strange reason.
> When I try with "title2" (or something none-existing) I get a different error
> that title2 is unknown / not indexed. So I suspect that title should be fine
> here ...
> If there is any information I can help out with, let me know.
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