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https://issues.apache.org/jira/browse/LUCENE-8332?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16501229#comment-16501229
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ASF subversion and git services commented on LUCENE-8332:
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Commit f9f5e837450e082ae7e1a82a0693760af7485a1b in lucene-solr's branch
refs/heads/master from [~dsmiley]
[ https://git-wip-us.apache.org/repos/asf?p=lucene-solr.git;h=f9f5e83 ]
LUCENE-8332: New ConcatenateGraphFilter (from CompletionTokenStream).
* Added a test for FingerprintFilter and clarified FF's end condition.
> New ConcatenateGraphTokenStream (move/rename CompletionTokenStream)
> -------------------------------------------------------------------
>
> Key: LUCENE-8332
> URL: https://issues.apache.org/jira/browse/LUCENE-8332
> Project: Lucene - Core
> Issue Type: New Feature
> Components: modules/analysis
> Reporter: David Smiley
> Assignee: David Smiley
> Priority: Major
> Attachments: LUCENE-8332.patch, LUCENE-8332.patch, LUCENE-8332.patch
>
> Time Spent: 3h 10m
> Remaining Estimate: 0h
>
> Lets move and rename the CompletionTokenStream in the suggest module into the
> analysis module renamed as ConcatenateGraphTokenStream. See comments in
> LUCENE-8323 leading to this idea. Such a TokenStream (or TokenFilter?) has
> several uses:
> * for the suggest module
> * by the SolrTextTagger for NER/ERD use cases – SOLR-12376
> * for doing complete match search efficiently
> It will need a factory – a TokenFilterFactory, even though we don't have a
> TokenFilter based subclass of TokenStream.
> It appears there is no back-compat concern in it suddenly disappearing from
> the suggest module as it's marked experimental and it only seems to be public
> now perhaps due to some technicality (it has package level constructors).
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