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https://issues.apache.org/jira/browse/LUCENE-4694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13592819#comment-13592819
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Uwe Schindler commented on LUCENE-4694:
---------------------------------------
Mike: If you really, really want to move it up:
- Make fields() abstract in IndexReader, only add the final methods that
delegate to the abstract one
- leave fields() abstract in AtomicReader and CompositeReader, too
- add the MultiFields implementation into BaseCompositeReader -> and only there
(maybe final)
The current patch is as worse as IndexReader before the split into
composite/atomic! IndexReader is an abstract class without concrete
implementations. The final methods only delegate to abstract methods, so they
are no "implementations".
> Add back IndexReader.fields() -> Multi*, or discourage term vectors in some
> better way
> --------------------------------------------------------------------------------------
>
> Key: LUCENE-4694
> URL: https://issues.apache.org/jira/browse/LUCENE-4694
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
> Attachments: LUCENE-4694.patch
>
>
> Users can easily get term vectors from any indexreader, but not postings
> lists. this encourages them to do really slow things: like pulling term
> vectors for every single document.
> this is really really so much worse than going through multifields or
> whatever.
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