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From "david.stuart@progressivealliance.co.uk" <david.stu...@progressivealliance.co.uk>
Subject NPE in MoreLikeThis referenced doc not found and debugQuery=True
Date Thu, 10 Dec 2009 13:04:21 GMT
Hi All,

When I do a specific MLT search on a document with debugQuery=True I am getting
a NullPoniterException both on screen and in my catalina logs. The query is as
follows

http://localhost:8080/solr2/select/?mlt.minwl=3&mlt.fl=body&mlt.mintf=1&mlt.maxwl=15&mlt.maxqt=20&version=1.2&rows=5&mlt.mindf=1&fl=nid,title,path,url,digest,teaser&start=0&q=nid:16036&qt=mlt&debugQuery=true

Is this desired behavior? 

java.lang.RuntimeException: java.lang.NullPointerException
    at org.apache.solr.search.QueryParsing.toString(QueryParsing.java:470)
    at
org.apache.solr.util.SolrPluginUtils.doStandardDebug(SolrPluginUtils.java:399)
    at
org.apache.solr.handler.MoreLikeThisHandler.handleRequestBody(MoreLikeThisHandle
r.java:189)
    at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java
:131)
    at org.apache.solr.core.SolrCore.execute(SolrCore.java:1204)
    at
org.apache.solr.servlet.SolrDispatchFilter.execute(SolrDispatchFilter.java:303)
    at
org.apache.solr.servlet.SolrDispatchFilter.doFilter(SolrDispatchFilter.java:232)
    at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilt
erChain.java:235)
    at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.
java:206)
    at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:2
33)
    at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:1
91)
    at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
    at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109
)
    at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
    at
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:845)
    at
org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Pr
otocol.java:583)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
    at java.lang.Thread.run(Thread.java:637)
Caused by: java.lang.NullPointerException
    at org.apache.solr.search.QueryParsing.toString(QueryParsing.java:439)
    at org.apache.solr.search.QueryParsing.toString(QueryParsing.java:467)
    ... 18 more
  

Apologies if this has been discussed or deemed desired, but thought I would
mention this and offer a patch as a entry into helping with the project.

Regards,

Dave
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