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Posted to dev@lucene.apache.org by "Ere Maijala (JIRA)" <ji...@apache.org> on 2018/01/03 11:00:00 UTC
[jira] [Updated] (SOLR-11811) Support for defining a Unicode set
filter when using ICUFoldingFilter
[ https://issues.apache.org/jira/browse/SOLR-11811?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ere Maijala updated SOLR-11811:
-------------------------------
Flags: Patch
Attachment: SOLR-11811.patch
Attached a patch.
> Support for defining a Unicode set filter when using ICUFoldingFilter
> ---------------------------------------------------------------------
>
> Key: SOLR-11811
> URL: https://issues.apache.org/jira/browse/SOLR-11811
> Project: Solr
> Issue Type: Improvement
> Security Level: Public(Default Security Level. Issues are Public)
> Components: Schema and Analysis
> Reporter: Ere Maijala
> Priority: Minor
> Labels: ICUFoldingFilterFactory
> Attachments: SOLR-11811.patch
>
>
> ne a Unicode set filter, ICUFoldingFilterFactory does not support it. A filter allows one to e.g. exclude a set of characters from being folded. E.g. for Finnish and Swedish the filter could be defined like this:
> <filter class="solr.ICUFoldingFilterFactory" filter="[^åäöÅÄÖ]"/>
> (Note: An additional MappingCharFilterFactory for lowercasing the characters excluded from folding would be needed for perfect results.)
> I'll add a patch that does this similar to ICUNormalizer2FilterFactory. Applies at least to master and branch_7x.
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