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Posted to issues@lucene.apache.org by "Alan Woodward (Jira)" <ji...@apache.org> on 2019/11/26 13:30:00 UTC

[jira] [Created] (LUCENE-9068) Build FuzzyQuery automata up-front

Alan Woodward created LUCENE-9068:
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             Summary: Build FuzzyQuery automata up-front
                 Key: LUCENE-9068
                 URL: https://issues.apache.org/jira/browse/LUCENE-9068
             Project: Lucene - Core
          Issue Type: Improvement
            Reporter: Alan Woodward
            Assignee: Alan Woodward


FuzzyQuery builds a set of levenshtein automata (one for each possible edit distance) at rewrite time, and passes them between different TermsEnum invocations using an attribute source.  This seems a bit needlessly complicated, and also means that things like visiting a query end up building the automata again.  We should instead build the automata at query construction time, which is how AutomatonQuery does it.



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