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Posted to dev@lucene.apache.org by "Endymion Dylan (JIRA)" <ji...@apache.org> on 2014/12/02 23:44:12 UTC
[jira] [Commented] (LUCENE-4378) QueryParsers do not support
negative boosts
[ https://issues.apache.org/jira/browse/LUCENE-4378?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14232255#comment-14232255 ]
Endymion Dylan commented on LUCENE-4378:
----------------------------------------
I +1 this feature. It's very very very useful to the project I'm currently developing...
> QueryParsers do not support negative boosts
> -------------------------------------------
>
> Key: LUCENE-4378
> URL: https://issues.apache.org/jira/browse/LUCENE-4378
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Hoss Man
> Attachments: LUCENE-4378-test.patch
>
>
> Negative query boosts have been supported at the "Query" object level for a long time (resulting in negative scores for matching documents), but evidently we never updated the QueryParsers to know about this - attempting to specify a negative boost in the query string results in a parse error.
> we should probably add this to the parser grammer(s)
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