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https://issues.apache.org/jira/browse/LUCENE-8145?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16347062#comment-16347062
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Alan Woodward commented on LUCENE-8145:
---------------------------------------

I should add that this is just a refactoring, and in particular passage scores 
are not changed.

> UnifiedHighlighter should use single OffsetEnum rather than List<OffsetEnum>
> ----------------------------------------------------------------------------
>
>                 Key: LUCENE-8145
>                 URL: https://issues.apache.org/jira/browse/LUCENE-8145
>             Project: Lucene - Core
>          Issue Type: Improvement
>          Components: modules/highlighter
>            Reporter: Alan Woodward
>            Assignee: Alan Woodward
>            Priority: Minor
>         Attachments: LUCENE-8145.patch
>
>
> The UnifiedHighlighter deals with several different aspects of highlighting: 
> finding highlight offsets, breaking content up into snippets, and passage 
> scoring.  It would be nice to split this up so that consumers can use them 
> separately.
> As a first step, I'd like to change the API of FieldOffsetStrategy to return 
> a single unified OffsetsEnum, rather than a collection of them.  This will 
> make it easier to expose the OffsetsEnum of a document directly from the 
> highlighter, bypassing snippet extraction and scoring.



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