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From Bingtao Yin <ybts...@gmail.com>
Subject Re: More Spatial Relations
Date Sat, 02 Jun 2018 00:38:49 GMT
Hi David,

Thanks for you reply.

Compared to the prefix tree, implementation through doc-value seems slow.
It needs to load shapes from doc-value for all docs and check each with the
query shape.


2018-06-02 3:31 GMT+08:00 David Smiley <david.w.smiley@gmail.com>:

> Hi Bingtao,
>
> > If I want to implement query for other relations, should I just serialize
> shape to binary format(e.g. wkb) and fall back to jts?
>
> Yes.  There's a lot already there but you'd need to subclass some stuff to
> add some other predicates.  See CompositeSpatialStrategy and
> ShapeValuesPredicate.  You could cast the value, a Shape, to a JtsGeometry
> (a Spatial4j shape) and then call getGeom() to get the underlying JTS
> Geometry instance.  If you find you need to fork entire classes then feel
> free to suggest improvements to the extensibility.
>
> ~ David
>
> On Tue, May 29, 2018 at 10:52 PM Bingtao Yin <ybtsdst@gmail.com> wrote:
>
> > Hi guys,
> >
> > Currently only limited spatial relations are supported(e.g.
> > withins/intersects in prefix tree). In DE-9IM, there are abount 8
> > relations.
> >
> > If I want to implement query for other relations, should I just serialize
> > shape to binary format(e.g. wkb) and fall back to jts?
> >
> > Any development plan on other relations? or will BKD tree support ogc
> > geometries and DE-9IM relations?
> >
> --
> Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker
> LinkedIn: http://linkedin.com/in/davidwsmiley | Book:
> http://www.solrenterprisesearchserver.com
>

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