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https://issues.apache.org/jira/browse/LUCENE-8778?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16848181#comment-16848181
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Tomoko Uchida commented on LUCENE-8778:
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Thanks for the comment, I will rethink the implementation of the SPI loader.
About the compatibility with Elasticsearch: this was also in my mind, however,
I am not sure that we should introduce complexity for allowing multiple names
or aliases (camel casing for backward compatibility and snake casing for
Elasticsearch style). I imagine it will require time and effort to migrate
their whole analysis framework, so I cannot think that they are interested in
the move just for using Lucene's factories...
> Define analyzer SPI names as static final fields and document the names in
> Javadocs
> -----------------------------------------------------------------------------------
>
> Key: LUCENE-8778
> URL: https://issues.apache.org/jira/browse/LUCENE-8778
> Project: Lucene - Core
> Issue Type: Task
> Components: modules/analysis
> Reporter: Tomoko Uchida
> Priority: Minor
> Attachments: ListAnalysisComponents.java, SPINamesGenerator.java,
> Screenshot from 2019-04-26 02-17-48.png, TestSPINames.java
>
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Each built-in analysis component (factory of tokenizer / char filter / token
> filter) has a SPI name but currently this is not documented anywhere.
> The goals of this issue:
> * Define SPI names as static final field for each analysis component so that
> users can get the component by name (via {{NAME}} static field.) This also
> provides compile time safety.
> * Officially document the SPI names in Javadocs.
> * Add proper source validation rules to ant {{validate-source-patterns}}
> target so that we can make sure that all analysis components have correct
> field definitions and documentation
> and,
> * Lookup SPI names on the new {{NAME}} fields. Instead deriving those from
> class names.
> (Just for quick reference) we now have:
> * *19* Tokenizers ({{TokenizerFactory.availableTokenizers()}})
> * *6* CharFilters ({{CharFilterFactory.availableCharFilters()}})
> * *118* TokenFilters ({{TokenFilterFactory.availableTokenFilters()}})
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