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Nov 6, 2009, 2:26 PM
Post #1 of 2
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[jira] Commented: (LUCENE-2040) PhraseQuery weight uses IDFExplanation.getIdf() method instead of Similarity.idf() directly
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[ https://issues.apache.org/jira/browse/LUCENE-2040?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12774449#action_12774449 ]
Andi Vajda commented on LUCENE-2040:
------------------------------------
The reason for filing the bug was two-fold:
1. Uwe asked me to
2. I found it strange that a query would leverage the Explanation stuff to
derive scoring
In PyLucene, I undeprecated the idf(Collection terms, Searcher searcher) and
implemented it via the IDFExplanation.idfExplain() hack so that extenders of
Similarity don't have to see this:
public IDFExplanation idfExplain(final Collection<Term> terms,
final Searcher searcher)
{
return new IDFExplanation() {
public float getIdf()
{
return idfTerms(terms, searcher);
}
public String explain()
{
return null;
}
};
}
I guess, I'm wondering why this method was deprecated since it's come back
through an IDFExplanation backdoor ?
> PhraseQuery weight uses IDFExplanation.getIdf() method instead of Similarity.idf() directly
> -------------------------------------------------------------------------------------------
>
> Key: LUCENE-2040
> URL: https://issues.apache.org/jira/browse/LUCENE-2040
> Project: Lucene - Java
> Issue Type: Improvement
> Components: Examples
> Reporter: Andi Vajda
> Assignee: Uwe Schindler
> Priority: Minor
>
> It should use Similarity's idf() method instead.
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