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https://issues.apache.org/jira/browse/LUCENE-6362?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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David Smiley updated LUCENE-6362:
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Attachment: LUCENE-6362 SPT leaf differentiate.patch
Here's the patch; a bit further along than it's original form posted
LUCENE-5579. I think all it needs is a test or two, maybe. But I think this
issue overall should wait until LUCENE-5579 as that will make this easier to
test and of course we can observe the benefit to this cell differentiation that
we trade-off in index size and some complexity.
> Differentiate within/approx SpatialPrefixTree leaf cells
> --------------------------------------------------------
>
> Key: LUCENE-6362
> URL: https://issues.apache.org/jira/browse/LUCENE-6362
> Project: Lucene - Core
> Issue Type: Improvement
> Components: modules/spatial
> Reporter: David Smiley
> Assignee: David Smiley
> Attachments: LUCENE-6362 SPT leaf differentiate.patch
>
>
> This patch enables indexed cells to be differentiated between those that are
> completely within the shape that was indexed, and those on the edge
> (intersects, not within) but reached a precision threshold. The point of
> this differentiation is to be used by the two-phase optimized predicates in
> LUCENE-5579 to be able to avoid an expensive geometry check for accuracy, in
> more cases than it is able to without this differentiation. In particular,
> if the query shape is _within_ an indexed shape, then this cell
> differentiation will enable a predicate to observe that without doing a
> geometry check.
> _note:_ patch here is moved from LUCENE-5579 as this is really an add-on
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