Hi,
The only way to perform effective search with spatial index is searching
for intersection of bounding boxes. Thus most probably you will need to
apply a two step approach:
1. Find everything by bounding box intersection for a fast rough search
over index.
2. Filter the result with exact matching function.
For example:
SELECT ...
FROM my_table t
WHERE t.coord && ?
AND my_search_predicate( t.coord , ? )
Where `my_search_predicate` is your custom function [1] which in turn will
utilize all the available geospatial API of JTS Suite [2].
[1]
https://ignite.apache.org/releases/1.8.0/javadoc/org/apache/ignite/cache/query/annotations/QuerySqlFunction.html
[2]
https://github.com/locationtech/jts/blob/master/doc/JTS%20Developer%20Guide.pdf
Sergi
2017-01-27 20:03 GMT+03:00 Raja <[email protected]>:
> Hi,
>
> I have been using Ignite to store Geo Spatial data, index it and query it.
>
> Till now my need was only to query the data by a bounding box and Ignite
> has
> been great for that type of need.
>
> Please see the link below for example of bounding box query
>
> https://www.gridgain.com/resources/blog/geospatial-queries-apache-ignite
> <https://www.gridgain.com/resources/blog/geospatial-queries-apache-ignite>
>
> Now I want to query the spatial data within a given radius of a geometry
> and
> many other ways
>
> Please see below for functions/methods PostGIS supports out of the box to
> query spatial data
>
> http://postgis.net/docs/reference.html
> <http://postgis.net/docs/reference.html>
>
> Wonder if ignite supports other ways of querying spatial data other than by
> bounding box.
>
> Appreciate if you can provide me a link to documentation or samples which
> helps to understand different ways to query spatial data.
>
> Thanking you
> Raja
>
>
>
>
>
>
> --
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>
