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https://issues.apache.org/jira/browse/LUCENE-6226?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14369657#comment-14369657
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Paul Elschot commented on LUCENE-6226:
--------------------------------------
For example, suppose the query is a nested proximity query:
{code}
near(unordered, 7,
near(ordered, 1, "new", "york"),
near(unordered, 4, "fish", "restaurant")
)
{code}
Somehow the actual distance between "fish" and "restaurant" needs to be
reflected in the document score.
The only way to do that is that the interval/span for that has its own score
value.
> Add interval iterators to Scorer
> --------------------------------
>
> Key: LUCENE-6226
> URL: https://issues.apache.org/jira/browse/LUCENE-6226
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Fix For: Trunk, 5.1
>
> Attachments: LUCENE-6226.patch, LUCENE-6226.patch, LUCENE-6226.patch,
> LUCENE-6226.patch, LUCENE-6226.patch, LUCENE-6226.patch, LUCENE-6226.patch
>
>
> This change will allow Scorers to expose which positions within a document
> they have matched, via a new IntervalIterator interface. Consumers get the
> iterator by calling intervals() on the Scorer, then call reset(docId)
> whenever the scorer has advanced and nextInterval() to iterate through
> positions. Once all matching intervals on the current document have been
> exhausted, nextInterval() returns false.
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