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Date: Mon, 30 Nov 2009 11:22:58 -0800 (PST)
From: AHMET ARSLAN <iorixxx@yahoo.com>
Subject: Re: LowerCaseFilter fails one letter (I) of Turkish alphabet
To: java-user@lucene.apache.org
In-Reply-To: <8f0ad1f30911301108w4c3e278fi9ec89c77b2b128e8@mail.gmail.com>
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> just to clarify, GreekLowerCaseFilter really shouldn't
> exist either. The
> final sigma problem it has (where there are two lowercase
> forms depending
> upon position in word), this is also solved with unicode
> case folding or
> collation. This is a perfect example of how lowercase is
> the wrong operation
> for search.
> 
> and RussianLowerCaseFilter is deprecated now, it does the
> exact same thing
> as LowerCaseFilter.

Thank you for your explanations. I just read the java-doc of org.apache.lucene.collation. If I am not wrong it is better to remove lowercasefilter completely from analyzer chain and add CollationKeyFilter with appropriate Locale right after the Tokenizer. Just as in CollationKeyAnalyzer.


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