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From David Smiley <david.w.smi...@gmail.com>
Subject Re: More Spatial Relations
Date Sat, 02 Jun 2018 02:49:06 GMT
For predicates other than "intersects", that is true :-/  Any help you
might be interested in offering here is most welcome.

On Fri, Jun 1, 2018 at 8:38 PM Bingtao Yin <ybtsdst@gmail.com> wrote:

> 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
> >
>
-- 
Lucene/Solr Search Committer, Consultant, Developer, Author, Speaker
LinkedIn: http://linkedin.com/in/davidwsmiley | Book:
http://www.solrenterprisesearchserver.com

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