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From "Uwe Schindler" <...@thetaphi.de>
Subject RE: MatchAllDocsQuery and InstantiatedIndex on Lucene 2.9.1
Date Wed, 09 Dec 2009 22:22:33 GMT
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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