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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 33725] New: - NullPointerException when using nested SpanOrQuery in SpanNotQuery
Date Thu, 24 Feb 2005 09:52:11 GMT
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http://issues.apache.org/bugzilla/show_bug.cgi?id=33725

           Summary: NullPointerException when using nested SpanOrQuery in
                    SpanNotQuery
           Product: Lucene
           Version: 1.4
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: normal
          Priority: P2
         Component: Search
        AssignedTo: lucene-dev@jakarta.apache.org
        ReportedBy: miles@runtime-collective.com


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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