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From "Yonik Seeley (JIRA)" <j...@apache.org>
Subject [jira] Commented: (LUCENE-352) [PATCH] NullPointerException when using nested SpanOrQuery in SpanNotQuery
Date Tue, 16 May 2006 01:40:06 GMT
    [ http://issues.apache.org/jira/browse/LUCENE-352?page=comments#action_12402474 ] 

Yonik Seeley commented on LUCENE-352:
-------------------------------------

+1
looks fine.


> [PATCH] NullPointerException when using nested SpanOrQuery in SpanNotQuery
> --------------------------------------------------------------------------
>
>          Key: LUCENE-352
>          URL: http://issues.apache.org/jira/browse/LUCENE-352
>      Project: Lucene - Java
>         Type: Bug

>   Components: Search
>     Versions: 1.4
>  Environment: Operating System: Linux
> Platform: Other
>     Reporter: Miles Barr
>     Assignee: Hoss Man
>  Attachments: LUCENE-352-consolidated-SpanNot-NPE.patch, TestBasics.java.patch, TestBasicsPatch2.txt,
patch.txt
>
> Overview description: 
> I'm using the span query classes in Lucene to generate higher scores for 
> search results where the search terms are closer together. In certain 
> situations I want to exclude terms from the span. When I attempt to exclude 
> more than one term I get an error. 
>  
> The example query I'm using is:  
>  
> 'brighton AND tourism' -pier -contents 
>  
> I construct the query objects and the toString() version is: 
>  
> spanNot(spanNear([contents:brighton contents:tourism], 10, false), 
> spanOr([contents:pier, contents:road])) 
>   
>  
> Steps to reproduce: 
> 1. Construct a SpanNearQuery (must have at least one term, but at least two 
> makes more sense) 
> 2. Construct a SpanOrQuery containing two or more terms 
> 3. Construct a SpanNotQuery to include the first query object and exclude the 
> second (SpanOrQuery) 
> 4. Execute the search 
>  
>  
> Actual Results: 
> A null pointer exception is thrown while generating the scores within the 
> search. 
>  
> Stack trace:  
> java.lang.NullPointerException   
>         at   
> org.apache.lucene.search.spans.SpanOrQuery$1.doc(SpanOrQuery.java:174)   
>         at   
> org.apache.lucene.search.spans.SpanNotQuery$1.next(SpanNotQuery.java:75)   
>         at org.apache.lucene.search.spans.SpanScorer.next(SpanScorer.java:50)   
>         at org.apache.lucene.search.Scorer.score(Scorer.java:37)   
>         at   
> org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:92)   
>         at org.apache.lucene.search.Hits.getMoreDocs(Hits.java:64)   
>         at org.apache.lucene.search.Hits.<init>(Hits.java:43)   
>         at org.apache.lucene.search.Searcher.search(Searcher.java:33)   
>         at org.apache.lucene.search.Searcher.search(Searcher.java:27)   
>         at   
> com.runtimecollective.search.LuceneSearch.search(LuceneSearch.java:362)   
>  
>  
> Expected Resuts: 
> It executes the search and results where the first search terms (near query) 
> are close together but without the second terms (or query) appearing.

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