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https://issues.apache.org/jira/browse/UIMA-2327?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13185518#comment-13185518
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Joern Kottmann commented on UIMA-2327:
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Sounds like a bug to me. Do you want to provide a patch?
JavaDoc is here:
http://lucene.apache.org/java/2_9_1/api/contrib-highlighter/org/apache/lucene/search/highlight/QueryScorer.html#init(org.apache.lucene.analysis.TokenStream)
There it says it could also return null, in this case we need to continue using
the existing TokenStream.
> Prospective Search in Lucas
> ---------------------------
>
> Key: UIMA-2327
> URL: https://issues.apache.org/jira/browse/UIMA-2327
> Project: UIMA
> Issue Type: Question
> Components: Sandbox-Lucas
> Affects Versions: 2.3.1Addons
> Reporter: Yanna Kang
>
> I would like to use UIMA Lucas to perform a prospective search. When the
> search query is a phrase query, ProspectiveSearchAE.process() could not find
> the matching tokens even if there are matches in the document. It worked well
> for boolean queries.
> In org.apache.uima.lucas.ProspectiveSearchAE line 189, the original code is
> scorer.init(tokenStream). I suspect that we need to do tokenStream =
> scorer.init(tokenStream). The original tokenStream was consumed in the
> scorer.init(tokenStream). If we want to consume it again (as the code did),
> we need to use the returned tokenStream, which has been reset to the
> beginning.
> I am a newbie to Lucas. Please correct me if I am wrong.
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