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https://issues.apache.org/jira/browse/LUCENE-6328?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adrien Grand resolved LUCENE-6328.
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Resolution: Won't Fix
Fix Version/s: (was: 5.2)
(was: Trunk)
> Make Filter.clone and Filter.setBoost throw an UnsupportedOperationException
> ----------------------------------------------------------------------------
>
> Key: LUCENE-6328
> URL: https://issues.apache.org/jira/browse/LUCENE-6328
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Attachments: LUCENE-6328.patch, queryextendsfilter-20150307.patch,
> queryextendsfilter-20150307b.patch
>
>
> The rewrite process uses a combination of calls to clone() and
> setBoost(boost) in order to rewrite queries. This is a bit weird for filters
> given that they were not originally designed to care about scoring.
> Using a filter directly as a query fails unit tests today since filters do
> not pass the QueryUtils checks: it is expected that cloning and changing the
> boost results in an instance which is unequal. However existing filters do
> not take into account the getBoost() parameter inherited from Query so this
> test fails.
> I think it would be less error-prone to throw an
> UnsupportedOperationException for clone() and setBoost() on filters and
> disable the check in QueryUtils for filters.
> In order to keep rewriting working, filters could rewrite to a CSQ around
> themselves so that clone() and setBoost() would be called on the CSQ.
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