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https://issues.apache.org/jira/browse/LUCENE-4055?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13274401#comment-13274401
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Robert Muir commented on LUCENE-4055:
-------------------------------------
rough plan:
* create branch for this and LUCENE-4050, the work is related really.
* separate per commit information (SegmentList? Commit?) from per-segment
metadata (SegmentInfo? SegmentMetadata?). the latter is basically si and fi.
these names can change. maybe fi is still preserved mostly asis.
* clean up the way per-segment metadata is used in such a way that it is
abstract and minimal to what IndexWriter/MP needs, not full of codec specific
stuff.
* ensure codecs can privately write any metadat they need (eg hasProx) and that
its accessible via all codec apis.
* try to ensure codecs write things they need like hasProx to compute files()
without iterating over fieldinfos. this would be a bonus, its currently a
concern of mine.
* add a basic introspection api (like map<string,string>) for tools like luke
to be able to display codec private values.
> Refactor SegmentInfo / FieldInfo to make them extensible
> --------------------------------------------------------
>
> Key: LUCENE-4055
> URL: https://issues.apache.org/jira/browse/LUCENE-4055
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/codecs
> Reporter: Andrzej Bialecki
> Assignee: Robert Muir
> Fix For: 4.0
>
>
> After LUCENE-4050 is done the resulting SegmentInfo / FieldInfo classes
> should be made abstract so that they can be extended by Codec-s.
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