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https://issues.apache.org/jira/browse/LUCENE-4044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13421095#comment-13421095
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Hoss Man commented on LUCENE-4044:
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bq. it would be pretty much a win for everyone to simplify this syntax and make 
these analysis modules real plugins (I'm frustrated with things like SOLR-3623 
/ the hassle people have to go thru to use some of the lucene analyzers)

Just to clarify: i believe you're saying that this would simplify things for 
end users because it would mean one less jar people need to load in (ie: bundle 
the FooTokenizerFactory in the same jar as the FooTokenizer so no need to a 
special solr contrib containing just the factory) ... correct?

And in theory it would simplify things for developers because if we can remove 
things like contrib/solr/analysis-extras then things like SOLR-3664 are 
problematic in fewer situations.

But (unless i'm missing something) nothing in this approach would actually 
eliminate the requirement that Solr users configure {{<lib ... />}} directives 
to load these external jars (and any third party dependencies) to get the 
factories+impls+third-party-deps ... correct?
                
> Add NamedSPILoader support to TokenizerFactory, TokenFilterFactory and 
> CharFilterFactory
> ----------------------------------------------------------------------------------------
>
>                 Key: LUCENE-4044
>                 URL: https://issues.apache.org/jira/browse/LUCENE-4044
>             Project: Lucene - Core
>          Issue Type: Sub-task
>          Components: modules/analysis
>            Reporter: Chris Male
>             Fix For: 4.0
>
>         Attachments: LUCENE-4044.patch
>
>
> In LUCENE-2510 I want to move all the analysis factories out of Solr and into 
> the directories with what they create.  This is going to hamper Solr's 
> existing strategy for supporting {{solr.*}} package names, where it replaces 
> {{solr}} with various pre-defined package names.  One way to tackle this is 
> to use NamedSPILoader so we simply look up {{StandardTokenizerFactory}} for 
> example, and find it wherever it is, as long as it is defined as a service.  
> This is similar to how we support Codecs currently.
> As noted by Robert in LUCENE-2510, this would also have the benefit of 
> meaning configurations could be less verbose, would aid in fully decoupling 
> the analysis module from Solr, and make the analysis factories easier to 
> interact with.

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