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https://issues.apache.org/jira/browse/LUCENE-2686?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Koji Sekiguchi updated LUCENE-2686:
-----------------------------------
Attachment: Test2LUCENE2590.java
Thanks Mike for opening this!
The attached program is what I want to do - I'd like to know which field a
match occurred. TestSubScorerFreqs of LUCENE-2590 calls BooleanScorer2.freq()
and it returns expected freq count. In my program, I get TermScorer from
BooleanScorer2 via ScorerVisitor and try to call TermScorer.freq() in collect()
method:
{code}
public void collect(int doc) throws IOException {
int freq = 0;
for( TermQueryScorer tqs : tqsSet ){
Scorer scorer = tqs.scorer;
int matchId = scorer.docID(); // matchId isn't expected
if( matchId == doc ){
freq += scorer.freq(); // this line is never executed
}
}
docCounts.put(doc + docBase, freq);
collector.collect(doc);
}
{code}
but TermScorer.docID() returns unexpected id and TermScorer.freq() isn't
executed (even if I remove "matchId == doc" condition, TermScorer.freq()
returns unexpected number anyway).
> DisjunctionSumScorer should not call .score on sub scorers until consumer
> calls .score
> --------------------------------------------------------------------------------------
>
> Key: LUCENE-2686
> URL: https://issues.apache.org/jira/browse/LUCENE-2686
> Project: Lucene - Java
> Issue Type: Bug
> Components: Search
> Reporter: Michael McCandless
> Fix For: 3.1, 4.0
>
> Attachments: Test2LUCENE2590.java
>
>
> Spinoff from java-user thread "question about Scorer.freq()" from Koji...
> BooleanScorer2 uses DisjunctionSumScorer to score only-SHOULD-clause boolean
> queries.
> But, this scorer does too much work for collectors that never call .score,
> because it scores while it's matching. It should only call .score on the
> subs when the caller calls its .score.
> This also has the side effect of messing up advanced collectors that gather
> the freq() of the subs (using LUCENE-2590).
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