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https://issues.apache.org/jira/browse/LUCENE-9204?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17351032#comment-17351032
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Alan Woodward commented on LUCENE-9204:
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I've opened two more prepatory PRs:
* https://github.com/apache/lucene/pull/150 adds specialised two-phase
disjunction handling for Spans and removes Spans related references in the core
search classes.
* https://github.com/apache/lucene/pull/151 adds a base class for testing
Matches to the test framework so that we can move Spans related matches tests
out of core
> Do interval queries do everything span queries do? Should we maybe
> eventually deprecate/remove span queries?
There are some subtle differences, around scoring and handling of payloads.
[~jpountz] suggested to me elsewhere that we should maybe provide wrapper
classes that translate between the two. I would generally suggest that people
should use intervals because they have more predictable behaviour (and we know
that they behave 'correctly', up to a mathematical definition of correct), but
I may be biased because I wrote them :)
> Move span queries to the queries module
> ---------------------------------------
>
> Key: LUCENE-9204
> URL: https://issues.apache.org/jira/browse/LUCENE-9204
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Alan Woodward
> Assignee: Alan Woodward
> Priority: Major
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> We have a slightly odd situation currently, with two parallel query
> structures for building complex positional queries: the long-standing span
> queries, in core; and interval queries, in the queries module. Given that
> interval queries solve at least some of the problems we've had with Spans, I
> think we should be pushing users more towards these implementations. It's
> counter-intuitive to do that when Spans are in core though. I've opened this
> issue to discuss moving the spans package as a whole to the queries module.
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