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https://issues.apache.org/jira/browse/LUCENE-3832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218341#comment-13218341
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Michael McCandless commented on LUCENE-3832:
--------------------------------------------
Sorry, what I meant was: we already have (and use, from tests only) this
algorithm, in
{{lucene/test-framework/src/java/org/apache/lucene/util/automaton/DaciukMihovAutomatonBuilder.java}}.
I agree we should promote it to core: it seems quite useful!
Actually I think there are slight differences vs the attached patch (looks like
Robert cutover to CharsRef/BytesRef), so I guess we need to reconcile those...
or maybe just move the existing one from test-framework to
StringUnionOperations (if there are no *important* differences :) ).
> Port BasicAutomata.stringUnion from Brics to Lucene
> ---------------------------------------------------
>
> Key: LUCENE-3832
> URL: https://issues.apache.org/jira/browse/LUCENE-3832
> Project: Lucene - Java
> Issue Type: Improvement
> Reporter: Dawid Weiss
> Assignee: Dawid Weiss
> Priority: Trivial
> Fix For: 3.6, 4.0
>
> Attachments: LUCENE-3832.patch
>
>
> Brics has my code to build Automaton from a set of sorted strings in one step
> (Daciuk/Mihov's algorithm again). This should be easily portable to Lucene
> and is quite useful.
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