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https://issues.apache.org/jira/browse/LUCENE-7416?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Uwe Schindler updated LUCENE-7416:
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Attachment: LUCENE-7146-simplific1.patch
Here my simplification for the first part without crazy hash set copying. This
just joins both sets, uses distict (its just top optimze) and then
anyOf(Predicate) with a predicate that does a set.contains() on the mustnot.
> BooleanQuery rewrite optimizations
> ----------------------------------
>
> Key: LUCENE-7416
> URL: https://issues.apache.org/jira/browse/LUCENE-7416
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/search
> Affects Versions: master (7.0)
> Reporter: Spyros Kapnissis
> Priority: Minor
> Fix For: master (7.0), 6.3
>
> Attachments: LUCENE-7146-simplific1.patch, LUCENE-7146.patch
>
>
> A couple of BooleanQuery rewrites / optimizations.
> First, as discussed on the user group, a BooleanQuery with a query that is
> both a SHOULD and a FILTER can be rewritten as a single MUST query, but care
> must be taken to decrement minShouldMatch by 1.
> Another case is if a query is both required (MUST or FILTER) and MUST_NOT at
> the same time, it can be converted to a MatchNoDocsQuery (although I haven't
> discussed this yet so hopefully I'm not missing something!).
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