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https://issues.apache.org/jira/browse/LUCENE-3451?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13113528#comment-13113528
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Chris Male commented on LUCENE-3451:
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bq. Can we throw an exc if a BQ or BF has only MUST_NOT clauses, since we
cannot handle it?
+1. Hit this problem myself many times when first using Solr and Lucene.
> Remove special handling of pure negative Filters in BooleanFilter
> (inconsistentToBQ+broken)
> -------------------------------------------------------------------------------------------
>
> Key: LUCENE-3451
> URL: https://issues.apache.org/jira/browse/LUCENE-3451
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Uwe Schindler
> Assignee: Uwe Schindler
> Fix For: 4.0
>
> Attachments: LUCENE-3451.patch
>
>
> We should at least in Lucene 4.0 remove the hack in BooleanFilter that allows
> pure negative Filter clauses. This is not supported by BooleanQuery and
> confuses users (I think that's the problem in LUCENE-3450).
> The hack is buggy, as it does not respect deleted documents and returns them
> in its DocIdSet.
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