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From "Robert Muir (JIRA)" <>
Subject [jira] Commented: (SOLR-2211) Create Solr FilterFactory for Lucene StandardTokenizer with UAX#29 support
Date Tue, 09 Nov 2010 00:30:06 GMT


Robert Muir commented on SOLR-2211:

Great, I look forward to the results.

By the way, on SOLR-2210 i also added the ICU filters, you could consider replacing LowerCaseFilterFactory
with ICUNormalizer2Factory (just use the defaults).
In addition to better lowercasing (e.g. ß -> ss), this would also bring the advantages
described in

Alternatively, if you are already using both LowerCaseFilterFactory and ASCIIFoldingFilterFactory,
you can replace both with ICUFoldingFilterFactory,
which goes further and also incorporates

> Create Solr FilterFactory for Lucene StandardTokenizer with  UAX#29 support
> ---------------------------------------------------------------------------
>                 Key: SOLR-2211
>                 URL:
>             Project: Solr
>          Issue Type: New Feature
>    Affects Versions: 3.1
>            Reporter: Tom Burton-West
>            Assignee: Robert Muir
>            Priority: Minor
>             Fix For: 3.1, 4.0
>         Attachments: SOLR-2211.patch
> The Lucene 3.x StandardTokenizer with UAX#29 support provides benefits for non-English
tokenizing.  Presently it can be invoked by using the StandardTokenizerFactory and setting
the Version to 3.1.  However, it would be useful to be able to use the improved unicode processing
without necessarily including the ip address and email address processing of StandardAnalyzer.
  A FilterFactory that allowed the use of the StandardTokenizer with UAX#29 support on its
own would be useful.

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