Add support for hiragana_uppercase & katakana_uppercase token filters in kuromoji analysis plugin #106553
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… in kuromoji analysis plugin
benwtrent
added
>enhancement
:Search/Analysis
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Pinging @elastic/es-search (Team:Search) |
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Builds are failing due to the two new token filters created via: apache/lucene#12915 Since the original idea was to expose those in ES, I decided to do that and fix the failing test. |
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The test failure is fixed by: apache/lucene#13195 Will rerun CI once new snapshot is pulled in. |
…s/lucene_snapshot
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Thanks Ben! LGTM. |
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This adds support for
hiragana_uppercaseandkatakana_uppercaseprovided in the new lucene release.Sutegana (捨て仮名) is small letter of hiragana and katakana in Japanese. In the old Japanese text, sutegana (捨て仮名) is not used unlikely to modern one. For example:
So it's meaningful to normalize sutegana to normal (uppercase) characters if we search against the corpus which includes old Japanese text such as patents, legal documents, contract policies, etc.
Related to: apache/lucene#12915