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https://issues.apache.org/jira/browse/LUCENE-5181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13750086#comment-13750086
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Jon Stewart commented on LUCENE-5181:
-------------------------------------
{quote}
How does highlighting fit into this?
{quote}
1. It's convenient to have the Passage snippet, for showing context around the
term matches.
2. It's very unclear how to actually retrieve term matches per doc given a
TopDocs result set. This was the subject of recent [mailing list
traffic|http://search-lucene.com/m/XhEx62ewjeQ/hits+coordinates&subj=How+to+get+hits+coordinates+in+Lucene+4+4+0],
and the PostingsHighlighter was suggested as the efficient way to do this,
which led to this JIRA being opened.
> Passage knows its own docID
> ---------------------------
>
> Key: LUCENE-5181
> URL: https://issues.apache.org/jira/browse/LUCENE-5181
> Project: Lucene - Core
> Issue Type: Improvement
> Affects Versions: 4.4
> Reporter: Jon Stewart
> Priority: Minor
>
> The new PostingsHighlight package allows for retrieval of term matches from a
> query if one creates a class that extends PassageFormatter and overrides
> format(). However, class Passage does not have a docID field, nor is this
> provided via PassageFormatter.format(). Therefore, it's very difficult to
> know which Document contains a given Passage.
> It would suffice for PassageFormatter.format() to be passed the docID as a
> parameter. From the code in PostingsHighlight, this seems like it would be
> easy.
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