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https://issues.apache.org/jira/browse/LUCENE-3836?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13220093#comment-13220093
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Andrzej Bialecki edited comment on LUCENE-3836 at 3/1/12 3:22 PM:
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I think this could work, too - I would instantiate the "overlay" data in
SegmentReader, and then I'd create the "overlay" codec's format readers in
SegmentReader, using the original format readers plus the overlay data. I'll
try this approach ... I'll create a separate issue to discuss this.
(The reason I'm doing this at the codec level is that I wanted to avoid heavy
mods to SegmentReader, and it's easier to visualize how this data is re-mapped
and stacked at the level of fairly simple codec APIs).
Let's close this as won't fix for now.
was (Author: ab):
I think this could work, too - I would instantiate the "overlay" data in
SegmentReader, and then I'd create the "overlay" codec's format readers in
SegmentReader, using the original format readers plus the overlay data. I'll
try this approach ... I'll create a separate issue to discuss this.
Let's close this as won't fix for now.
> Most Codec.*Format().*Reader() methods should use SegmentReadState
> ------------------------------------------------------------------
>
> Key: LUCENE-3836
> URL: https://issues.apache.org/jira/browse/LUCENE-3836
> Project: Lucene - Java
> Issue Type: Improvement
> Components: core/codecs
> Reporter: Andrzej Bialecki
> Assignee: Andrzej Bialecki
> Fix For: 4.0
>
> Attachments: LUCENE-3836.patch
>
>
> Codec formats API for opening readers is inconsistent - sometimes it uses
> SegmentReadState, in other cases it uses individual arguments that are
> already available via SegmentReadState. This complicates extending the API,
> e.g. if additional per-segment state would need to be passed to the readers.
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