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https://issues.apache.org/jira/browse/LUCENE-3474?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13117857#comment-13117857
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Robert Muir commented on LUCENE-3474:
-------------------------------------

{quote}
This means on any addition to the scorer API (eg I've long wanted for
caller to declare up front whether they need scores computed vs "only
matching", ie MTQWF and CSQ would pass false), we break the API. But
I think that's actually fine, even in 3.x: making your own Scorer is
very expert.
{quote}

Just as an FYI: we already have an issue open for that too: LUCENE-3331

But I don't think we will see real gains from that with StandardCodec/DocsEnum 
today?

                
> pass liveDocs Bits down in scorercontext, instead of Weights pulling from the 
> reader 
> -------------------------------------------------------------------------------------
>
>                 Key: LUCENE-3474
>                 URL: https://issues.apache.org/jira/browse/LUCENE-3474
>             Project: Lucene - Java
>          Issue Type: Task
>    Affects Versions: 4.0
>            Reporter: Robert Muir
>            Assignee: Robert Muir
>         Attachments: LUCENE-3474.patch, LUCENE-3474.patch, LUCENE-3474.patch, 
> LUCENE-3474.patch
>
>
> Spinoff from LUCENE-1536, this would allow filters to work in a more flexible 
> way (besides just cleaning up)

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