[jira] [Updated] (LUCENE-5666) Add UninvertingReader

["Robert Muir (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LUCENE-5666?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Muir updated LUCENE-5666:
--------------------------------

    Attachment: LUCENE-5666.patch

Patch (from diff-sources.py) showing the differences between trunk and branch.

Unfortunately I could not remove all fieldcache insanity in solr (i really tried), so there are two narrow cases where its explicitly "enabled":
* ord/rord on single-valued numeric fields
* grouping with faceting (group.facet) on single-valued numeric fields.

Otherwise no more insanity and things are a lot more flexible.

> Add UninvertingReader
> ---------------------
>
>                 Key: LUCENE-5666
>                 URL: https://issues.apache.org/jira/browse/LUCENE-5666
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Robert Muir
>             Fix For: 5.0
>
>         Attachments: LUCENE-5666.patch
>
>
> Currently the fieldcache is not pluggable at all. It would be better if everything used the docvalues apis.
> This would allow people to customize the implementation, extend the classes with custom subclasses with additional stuff, etc etc.
> FieldCache can be accessed via the docvalues apis, using the FilterReader api.



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