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https://issues.apache.org/jira/browse/LUCENE-6997?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15123528#comment-15123528
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Michael McCandless commented on LUCENE-6997:
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+1 to graduate the postings based geo impls from sandbox.
+1 to graduate into spatial3d and then rename spatial3d to spatial2 or
spatiallite or something, but I think renaming can come later / be decoupled
from graduating.
It's wonderful JTS finally has a friendly license, but it's still an external
dependency which makes spatial module heavy imo, and the numerous abstractions
in spatial are also heavy. So far [~nknize]'s geo sandbox impls have been kept
relatively straightforward by comparison, and I think we should try to keep it
that way.
> Graduate GeoUtils and postings based GeoPointField from sandbox...
> ------------------------------------------------------------------
>
> Key: LUCENE-6997
> URL: https://issues.apache.org/jira/browse/LUCENE-6997
> Project: Lucene - Core
> Issue Type: Improvement
> Reporter: Nicholas Knize
>
> {{GeoPointField}} is a lightweight dependency-free postings based geo field
> currently in sandbox. It has evolved into a very fast lightweight geo option
> that heavily leverages the optimized performance of the postings structure.
> It was originally intended to graduate to core but this does not seem
> appropriate given the variety of "built on postings" term encoding options
> (e.g., see LUCENE-6930).
> Additionally, the {{Geo*Utils}} classes are dependency free lightweight
> relational approximation utilities used by both {{GeoPointField}} and the BKD
> based {{LatLonField}} and can also be applied to benefit the lucene-spatial
> module.
> These classes have been evolving and baking for some time and are at a
> maturity level qualifying for promotion from sandbox. This will allow support
> for experimental encoding methods with (minimal) backwards compatibility -
> something sandbox does not allow.
> Since GeoPoint classes are dependency free, all GeoPointField and support and
> utility classes currently in sandbox would be promoted to the spatial3d
> package. (possibly a separate issue to rename spatial3d to spatialcore or
> spatiallite?) Such that for basic lightweight Geo support one would only need
> a handful of lucene jars. By simply adding the lucene-spatial module and its
> dependency jars users can obtain more advanced geospatial support (heatmap
> facets, full shape relations, etc).
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