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Mike Sokolov commented on LUCENE-5620: -------------------------------------- bq whether you have field1:UPPER->0 and field1:upper->0, or field1:UPPER->0 and field2:upper->0 makes no difference. Yes, I see that. But if you have field1:lower->0 *and* field2:lower->0 then you have doubled the number of postings required, and most terms in English are going to be lower-case only. > LowerCaseFilter.preserveOriginal > -------------------------------- > > Key: LUCENE-5620 > URL: https://issues.apache.org/jira/browse/LUCENE-5620 > Project: Lucene - Core > Issue Type: Improvement > Reporter: Mike Sokolov > Attachments: LUCENE-5620.patch > > > Following closely the model of LUCENE-5437 (which worked on > ASCIIFoldingFilter), this patch adds the ability to preserve the original > token to LowerCaseFilter. This is useful if you want an all-lowercase search > term to match without regard to case, while search terms with uppercase > letters match in a case-sensitive manner. -- This message was sent by Atlassian JIRA (v6.2#6252) --------------------------------------------------------------------- To unsubscribe, e-mail: dev-unsubscr...@lucene.apache.org For additional commands, e-mail: dev-h...@lucene.apache.org