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https://issues.apache.org/jira/browse/LUCENE-1799?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Muir updated LUCENE-1799:
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Attachment: LUCENE-1799.patch
attached is a simple prototype for encoding terms as BOCU-1
So while I don't think things like wildcard, etc will work due to the nature of
BOCU-1, term and phrase queries should work fine, and it maintains UTF-8 order
so sorting is fine, and range queries should work once we fix TermRangeQuery to
use byte.
the impl is probably a bit slow (uses charset api) as its just for playing
around.
note: I didnt check the box because of the patent thing, (not sure it even
applies since i use the icu impl here), but either way i dont want to involve
myself with that.
> Unicode compression
> -------------------
>
> Key: LUCENE-1799
> URL: https://issues.apache.org/jira/browse/LUCENE-1799
> Project: Lucene - Java
> Issue Type: New Feature
> Components: Store
> Affects Versions: 2.4.1
> Reporter: DM Smith
> Priority: Minor
> Attachments: LUCENE-1799.patch
>
>
> In lucene-1793, there is the off-topic suggestion to provide compression of
> Unicode data. The motivation was a custom encoding in a Russian analyzer. The
> original supposition was that it provided a more compact index.
> This led to the comment that a different or compressed encoding would be a
> generally useful feature.
> BOCU-1 was suggested as a possibility. This is a patented algorithm by IBM
> with an implementation in ICU. If Lucene provide it's own implementation a
> freely avIlable, royalty-free license would need to be obtained.
> SCSU is another Unicode compression algorithm that could be used.
> An advantage of these methods is that they work on the whole of Unicode. If
> that is not needed an encoding such as iso8859-1 (or whatever covers the
> input) could be used.
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