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https://issues.apache.org/jira/browse/LUCENE-2227?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-2227:
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Fix Version/s: (was: 4.3)
4.4
> separate chararrayset interface from impl
> -----------------------------------------
>
> Key: LUCENE-2227
> URL: https://issues.apache.org/jira/browse/LUCENE-2227
> Project: Lucene - Core
> Issue Type: Task
> Components: modules/analysis
> Affects Versions: 3.0
> Reporter: Robert Muir
> Priority: Minor
> Fix For: 4.4
>
>
> CharArraySet should be abstract
> the hashing implementation currently being used should instead be called
> CharArrayHashSet
> currently our 'CharArrayHashSet' is hardcoded across Lucene, but others might
> want their own impl.
> For example, implementing CharArraySet as DFA with
> org.apache.lucene.util.automaton gives faster contains(char[], int, int)
> performance, as it can do a 'fast fail' and need not hash the entire string.
> This is useful as it speeds up indexing in StopFilter.
> I did not think this would be faster but i did benchmarks over and over with
> the reuters corpus, and it is, even with english text's wierd average word
> length of 5
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