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https://issues.apache.org/jira/browse/LUCENE-2621?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13120899#comment-13120899
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Robert Muir commented on LUCENE-2621:
-------------------------------------
yeah another alternative name to FieldCodec would be something like
PostingsFormat (or similar).
Because there is a big difference between PreFlex (which is actually a codec),
and Memory/Pulsing.
as far as the current patch: yeah its missing a lot... because as soon as I
started digging here I thought, well we have to probably try to fix these codec
classes first before going further. Really I would like for some of the stuff
like shared docstores to be private to PreFlex codec, part of fixing the
files() issue.
Same with the merging, this bulk copying of index inputs should be in codec as
well. Currently its not only wrong as you noted, but makes assumptions about
the implementation. But i didn't want to just shove this into CodecProvider
since it doesnt really belong there.
Finally, I do think the CodecProvider has a place after we fix these names. But
I dont think it should be really any more than name -> Codec resolution...
currently it does too much. But to fix this, we really want to remove all the
special per-field map, etc stuff it has... and this means factoring
PerFieldCodecWrapper back out into codecs (in my opinion this should be
PerFieldPostingsFormat, and just an 'ordinary' Codec). And for that to work
correctly, we need FieldInfos reading/writing under codec control so that this
per-field stuff can be private to PerFieldPostingsFormat....
So there is a ton to do, although I made a branch I'm kinda concerned about
doing a bunch of renaming and keeping things in sync... maybe I should ignore
this though. But for now I've been trying to figure out any way we can do this
in individual incremental steps/issues directly on trunk, its always nice to
make progress that way.
> Extend Codec to handle also stored fields and term vectors
> ----------------------------------------------------------
>
> Key: LUCENE-2621
> URL: https://issues.apache.org/jira/browse/LUCENE-2621
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/index
> Affects Versions: 4.0
> Reporter: Andrzej Bialecki
> Assignee: Robert Muir
> Labels: gsoc2011, lucene-gsoc-11, mentor
> Attachments: LUCENE-2621_rote.patch
>
>
> Currently Codec API handles only writing/reading of term-related data, while
> stored fields data and term frequency vector data writing/reading is handled
> elsewhere.
> I propose to extend the Codec API to handle this data as well.
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