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https://issues.apache.org/jira/browse/SOLR-815?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12641757#action_12641757
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Koji Sekiguchi commented on SOLR-815:
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Thank you for your great patch on this ticket (and SOLR-814) and I'm sorry for
late reply. There is definitely such requirements in Japan.
I think this type of normalization can be done in Reader, not TokenFilter. And
in my project, I'm using extended Tokenizer which
reads chars from "MappingReader", the MappingReader solves this type of
character mapping (and mapping rule can be read from mapping.txt etc).
I've been thinking my methods (hard coded) can be more general. I'll open a new
ticket for it soon.
> Add new Japanese half-width/full-width normalizaton Filter and Factory
> ----------------------------------------------------------------------
>
> Key: SOLR-815
> URL: https://issues.apache.org/jira/browse/SOLR-815
> Project: Solr
> Issue Type: New Feature
> Components: search
> Affects Versions: 1.3
> Reporter: Todd Feak
> Assignee: Koji Sekiguchi
> Priority: Minor
> Attachments: SOLR-815.patch, SOLR-815.patch
>
>
> Japanese Katakana and Latin alphabet characters exist as both a "half-width"
> and "full-width" version. This new Filter normalizes to the full-width
> version to allow searching and indexing using both.
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