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https://issues.apache.org/jira/browse/LUCENE-2034?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12784434#action_12784434
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Robert Muir commented on LUCENE-2034:
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{quote}
This has been discussed already and we haven't had much of a success though. I
can not remember the issue (robert can you remember the factory issue?) but it
was basically based on a factory pattern. This would also be my approach to it.
That way we could get rid of almost every analyzer. I use such a pattern myself
which works quite well.
{quote}
I think the only issue is that if I were to design such a thing, it would look
just like how the analysis factories work in Solr... (already a solved
problem)... maybe I am missing something?
> Massive Code Duplication in Contrib Analyzers - unifly the analyzer ctors
> -------------------------------------------------------------------------
>
> Key: LUCENE-2034
> URL: https://issues.apache.org/jira/browse/LUCENE-2034
> Project: Lucene - Java
> Issue Type: Improvement
> Components: contrib/analyzers
> Affects Versions: 2.9
> Reporter: Simon Willnauer
> Assignee: Robert Muir
> Priority: Minor
> Fix For: 3.1
>
> Attachments: LUCENE-2034,patch, LUCENE-2034,patch, LUCENE-2034.patch,
> LUCENE-2034.patch, LUCENE-2034.patch, LUCENE-2034.patch, LUCENE-2034.patch,
> LUCENE-2034.txt
>
>
> Due to the variouse tokenStream APIs we had in lucene analyzer subclasses
> need to implement at least one of the methodes returning a tokenStream. When
> you look at the code it appears to be almost identical if both are
> implemented in the same analyzer. Each analyzer defnes the same inner class
> (SavedStreams) which is unnecessary.
> In contrib almost every analyzer uses stopwords and each of them creates his
> own way of loading them or defines a large number of ctors to load stopwords
> from a file, set, arrays etc.. those ctors should be removed / deprecated and
> eventually removed.
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