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From "Karl Wright (JIRA)" <>
Subject [jira] [Commented] (LUCENE-6607) Move geo3d to Lucene's sandbox module
Date Wed, 01 Jul 2015 03:25:04 GMT


Karl Wright commented on LUCENE-6607:

As I understand it, the idea is to construct a field type that represents a geo3d point. 
In order to be able to use BKD to search for objects in geo3d shapes, you'd obviously need
geo3d math.

Nicholas has gone to some lengths to, in essence, create a minimal 2-D geo implementation
sufficient to support GeoPoint field types and BKD.  Mike has built the support intended for
this.  It seemed reasonable to do the same thing with geo3d as well.

So either: (1) we build true geo types into core, or (2) we add geo field types to modules/spatial.
 I don't know if (2) is in fact a reasonable thing to do, however.

> Move geo3d to Lucene's sandbox module
> -------------------------------------
>                 Key: LUCENE-6607
>                 URL:
>             Project: Lucene - Core
>          Issue Type: Improvement
>            Reporter: Michael McCandless
>            Assignee: Michael McCandless
>             Fix For: 5.3, Trunk
> Geo3d is a powerful low-level geo API, recording places on the earth's surface in the
index in three dimensions (as 3 separate numbers) and offering fast shape intersection/distance
testing at search time.
> [~daddywri] originally contributed this in LUCENE-6196, and we put it in spatial module,
but I think a more natural place for it, for now anyway, is Lucene's sandbox module: it's
very new, its APIs/abstractions are very much in flux (and the higher standards for abstractions
in the spatial module cause disagreements: LUCENE-6578), [~daddywri] and others could iterate
faster on changes in sandbox, etc.
> This would also un-block issues like LUCENE-6480, allowing GeoPointField and BKD trees
to also use geo3d.

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