[jira] [Updated] (LUCENE-6304) Add MatchNoDocsQuery that matches no documents

["Lee Hinman (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-6304?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lee Hinman updated LUCENE-6304:
-------------------------------
    Attachment: LUCENE-6304.patch

Patch that adds the MatchNoDocsQuery and uses it for empty SimpleQueryParser queries as well as when a BooleanQuery is rewritten and has no clauses.

> Add MatchNoDocsQuery that matches no documents
> ----------------------------------------------
>
>                 Key: LUCENE-6304
>                 URL: https://issues.apache.org/jira/browse/LUCENE-6304
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: core/search
>    Affects Versions: 5.0
>            Reporter: Lee Hinman
>            Priority: Minor
>         Attachments: LUCENE-6304.patch
>
>
> As a followup to LUCENE-6298, it would be nice to have an explicit MatchNoDocsQuery to indicate that no documents should be matched. This would hopefully be a better indicator than a BooleanQuery with no clauses or (even worse) null.



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