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From Karl Wettin <karl.wet...@gmail.com>
Subject Re: MatchAllDocsQuery and InstantiatedIndex on Lucene 2.9.1
Date Thu, 10 Dec 2009 20:20:04 GMT
https://issues.apache.org/jira/browse/LUCENE-2144

9 dec 2009 kl. 23.22 skrev Uwe Schindler:

> This is a bug in InstantiatedIndex. The termDoc(null) was added to  
> get all
> documents. This was never implemented in Instantiated Index. Can you  
> open an
> issue?
>
> There maybe other queries fail because of this (e.g.
> FieldCacheRangeFilter,...).
>
> -----
> Uwe Schindler
> H.-H.-Meier-Allee 63, D-28213 Bremen
> http://www.thetaphi.de
> eMail: uwe@thetaphi.de
>
>> -----Original Message-----
>> From: Jason Fennell [mailto:jdfennell@gmail.com]
>> Sent: Wednesday, December 09, 2009 7:48 PM
>> To: java-user@lucene.apache.org
>> Subject: MatchAllDocsQuery and InstantiatedIndex on Lucene 2.9.1
>>
>> I'm trying to upgrade our application from Lucene 2.4.1 to Lucene  
>> 2.9.1.
>> I've been using an InstantiatedIndex to do a bunch of unit testing,  
>> but am
>> running into a some problems with Lucene 2.9.1.
>> In particular, when I try to run a MatchAllDocsQuery on my
>> InstantiatedIndex
>> (which worked fine on 2.4.1) a NullPointerException is raised.  I  
>> think I
>> tracked down the problem in the Lucene source.
>>
>> In the 2.9.1 MatchAllDocsQuery, the MatchAllScorer retrieves  
>> termDocs from
>> the IndexReader passed to it with
>>
>> reader.termDocs(null)
>>
>> which I assume is supposed to return all termDocs.  However,  
>> tracing this
>> call down
>>
>> IndexReader.termDocs(term) calls InstantiatedTermDocs.seek(
>> term) calls InstantiatedIndex.findTerm(term)
>>
>> which is implemented as
>>
>> InstantiatedTerm findTerm(Term term) {
>>    return findTerm(term.field(), term.text());
>> }
>>
>> which, since term is null, results in a NullPointerException.  This  
>> seems
>> to
>> me like an bug either in the MatchAllDocsQuery implementation (the  
>> version
>> in 2.4.1 did not use termDocs, so did not pass through this null),  
>> or a
>> bug
>> in the implementation of InstantiatedIndex.
>>
>> Any suggestions on what I can do about this?  I definitely can't  
>> get rid
>> of
>> the MatchAllDocsQuery and don't really want to move back to a slow
>> RAMDirectory.
>
>
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