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https://issues.apache.org/jira/browse/LUCENE-3366?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13081388#comment-13081388
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Robert Muir commented on LUCENE-3366:
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well its not "unfinished", the right decision might be to ultimately remove it.
and we could deprecate it in 4.9 and remove it in 5.0 if this is the case, no
one's indexes will be broken as it wouldnt have done anything.
but I don't like what happens with thai etc right now if someone uses
StandardAnalyzer.
> StandardFilter only works with ClassicTokenizer and only when version < 3.1
> ---------------------------------------------------------------------------
>
> Key: LUCENE-3366
> URL: https://issues.apache.org/jira/browse/LUCENE-3366
> Project: Lucene - Java
> Issue Type: Improvement
> Components: modules/analysis
> Affects Versions: 3.3
> Reporter: David Smiley
>
> The StandardFilter used to remove periods from acronyms and apostrophes-S's
> where they occurred. And it used to work in conjunction with the
> StandardTokenizer. Presently, it only does this with ClassicTokenizer and
> when the lucene match version is before 3.1. Here is a excerpt from the code:
> {code:lang=java}
> public final boolean incrementToken() throws IOException {
> if (matchVersion.onOrAfter(Version.LUCENE_31))
> return input.incrementToken(); // TODO: add some niceties for the new
> grammar
> else
> return incrementTokenClassic();
> }
> {code}
> It seems to me that in the great refactor of the standard tokenizer,
> LUCENE-2167, something was forgotten here. I think that if someone uses the
> ClassicTokenizer then no matter what the version is, this filter should do
> what it used to do. And the TODO suggests someone forgot to make this filter
> do something useful for the StandardTokenizer. Or perhaps that idea should
> be discarded and this class should be named ClassicTokenFilter.
> In any event, the javadocs for this class appear out of date as there is no
> mention of ClassicTokenizer, and the wiki is out of date too.
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