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https://issues.apache.org/jira/browse/LUCENE-4426?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13463038#comment-13463038
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Adrien Grand commented on LUCENE-4426:
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bq. How does this relate to NumericIndexDocValueSource?
I didn't know about this class! Maybe the new classes of my patch could replace
this one:
* the objectVal method returns an object whose type matches the ValueSource
name,
* there is the StrDocValuesFieldSource to deal with DocValues.Type.BYTES*
when they are UTF8-encoded Strings
* they use a default source when the segment has no DocValues
* they give the ability to load direct sources
(My goal is to reuse them in SOLR-3855)
bq. I am confused why the current one only handles 3 types?
Right. Strange that it is able to deal with VAR_INTS but none of FIXED_INTS_*.
> New ValueSource implementations that wrap DocValues
> ---------------------------------------------------
>
> Key: LUCENE-4426
> URL: https://issues.apache.org/jira/browse/LUCENE-4426
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/other
> Reporter: Adrien Grand
> Assignee: Adrien Grand
> Priority: Minor
> Fix For: 4.1, 5.0
>
> Attachments: LUCENE-4426.patch
>
>
> We should have ValueSource implementations that wrap DocValues in
> lucene-queries so that DocValues can be used in function queries.
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