Yonik, Am I right to say that using a RangeFilter for this purpose might be less efficient for large indexes than indexing as "__null__" since RangeFilter uses TermEnum and TermDocs and iterates through every term in the index?
Luke -----Original Message----- From: Pieter Berkel [mailto:[EMAIL PROTECTED] Sent: Friday, August 10, 2007 10:08 AM To: solr-dev@lucene.apache.org Subject: Re: indexing null values? On 10/08/07, Yonik Seeley <[EMAIL PROTECTED]> wrote: > I take that back... being able to specify open ends on the range query > via the parser is also another Solr specific thing. > This is one of the reasons why we're moving from a custom-build Lucene solution to Solr. Wouldn't foo:"" work for a string (untokenized) field? > For a tokenized field that typically eliminates whitespace, no zero > length strings would be indexed anyway. > Unfortunately the Lucene query parser doesn't accept empty string values in the query string: SEVERE: org.apache.lucene.queryParser.ParseException: Cannot parse 'article_type:""': Lexical error at line 1, column 16. Encountered: <EOF> after : "\"\"" at org.apache.lucene.queryParser.QueryParser.parse(QueryParser.java :153) at org.apache.solr.search.QueryParsing.parseQuery(QueryParsing.java :93) at org.apache.solr.handler.StandardRequestHandler.handleRequestBody( StandardRequestHandler.java:115) at org.apache.solr.handler.RequestHandlerBase.handleRequest( RequestHandlerBase.java:78) at org.apache.solr.core.SolrCore.execute(SolrCore.java:723) at org.apache.solr.servlet.SolrDispatchFilter.execute( SolrDispatchFilter.java:194) at org.apache.solr.servlet.SolrDispatchFilter.doFilter( SolrDispatchFilter.java:162) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter( ApplicationFilterChain.java:215) at org.apache.catalina.core.ApplicationFilterChain.doFilter( ApplicationFilterChain.java:188) at org.apache.catalina.core.StandardWrapperValve.invoke( StandardWrapperValve.java:210) at org.apache.catalina.core.StandardContextValve.invoke( StandardContextValve.java:174) at org.apache.catalina.core.StandardHostValve.invoke( StandardHostValve.java:127) at org.apache.catalina.valves.ErrorReportValve.invoke( ErrorReportValve.java:117) at org.apache.catalina.core.StandardEngineValve.invoke( StandardEngineValve.java:108) at org.apache.catalina.connector.CoyoteAdapter.service( CoyoteAdapter.java:151) at org.apache.coyote.http11.Http11Processor.process( Http11Processor.java:870) at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.proc essConnection (Http11BaseProtocol.java:665) at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket( PoolTcpEndpoint.java:528) at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt( LeaderFollowerWorkerThread.java:81) at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run( ThreadPool.java:685) at java.lang.Thread.run(Thread.java:619) While it would be a useful feature to have, I'm not sure if it's worth persuing the matter further. Piete
