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https://issues.apache.org/jira/browse/LUCENE-5293?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13798965#comment-13798965
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Adrien Grand commented on LUCENE-5293:
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bq. Shall I add a check for QueryWrapperFilter.getQuery() being a TermQuery and
then use docFreq() ?
I don't like much having support for specific filters based on instanceof
calls. I really think the only two options are to consume the filter to cache
twice, or to first load into memory in another filter impl and then load it
again in an EF doc id set. And I would go for option 2 since option 1 is likely
going to be slower?
> Also use EliasFanoDocIdSet in CachingWrapperFilter
> --------------------------------------------------
>
> Key: LUCENE-5293
> URL: https://issues.apache.org/jira/browse/LUCENE-5293
> Project: Lucene - Core
> Issue Type: Improvement
> Components: core/search
> Reporter: Paul Elschot
> Priority: Minor
> Attachments: LUCENE-5293.patch
>
>
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