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Posted to java-user@lucene.apache.org by Dan Quaroni <dq...@OPENRATINGS.com> on 2003/10/03 23:33:39 UTC

of^1 illegal?

I'm running lucene 1.2, and when I do the following query I get the
following exception:

name:of^1

java.lang.NullPointerException
        at org.apache.lucene.queryParser.QueryParser.Term(Unknown Source)
        at org.apache.lucene.queryParser.QueryParser.Clause(Unknown Source)
        at org.apache.lucene.queryParser.QueryParser.Query(Unknown Source)
        at org.apache.lucene.queryParser.QueryParser.Clause(Unknown Source)
        at org.apache.lucene.queryParser.QueryParser.Query(Unknown Source)
        at org.apache.lucene.queryParser.QueryParser.parse(Unknown Source)
        at
SearchProduce_ModelTrainData.performQuery(SearchProduce_ModelTrainDat
a.java:610)
        at
SearchProduce_ModelTrainData.main(SearchProduce_ModelTrainData.java:3

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Re: of^1 illegal?

Posted by Steve Rowe <sa...@gwmail.syr.edu>.
Dan,

Does your Analyzer use a StopFilter?  If you're using the 
StandardAnalyzer, for example, "of" is on its list of words to filter 
(via a StopFilter instance).  If the single term in a query is 
filtered out, you're "doing" an empty query, which could cause trouble 
    not unlike that which you report.

Hope it helps,
Steve

Dan Quaroni wrote:
> I'm running lucene 1.2, and when I do the following query I get the
> following exception:
> 
> name:of^1
> 
> java.lang.NullPointerException
>         at org.apache.lucene.queryParser.QueryParser.Term(Unknown Source)
>         at org.apache.lucene.queryParser.QueryParser.Clause(Unknown Source)
>         at org.apache.lucene.queryParser.QueryParser.Query(Unknown Source)
>         at org.apache.lucene.queryParser.QueryParser.Clause(Unknown Source)
>         at org.apache.lucene.queryParser.QueryParser.Query(Unknown Source)
>         at org.apache.lucene.queryParser.QueryParser.parse(Unknown Source)
>         at
> SearchProduce_ModelTrainData.performQuery(SearchProduce_ModelTrainDat
> a.java:610)
>         at
> SearchProduce_ModelTrainData.main(SearchProduce_ModelTrainData.java:3
> 
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> To unsubscribe, e-mail: lucene-user-unsubscribe@jakarta.apache.org
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> 


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Re: of^1 illegal?

Posted by Erik Hatcher <er...@ehatchersolutions.com>.
On Friday, October 3, 2003, at 05:33  PM, Dan Quaroni wrote:
> I'm running lucene 1.2, and when I do the following query I get the
> following exception:
>
> name:of^1

Works fine with the latest CVS version, though.

What are you searching for?  Are you trying to indicate a boost factor 
of 1 (which is the default anyway)?


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