Re: [Bigdata-developers] Geonames and Blazegraph Geospatial index

[Stas M. <sma...@wi...>]

Hi!

> I was wondering if anyone has already worked on Custom Geospatial Data
> types, vocabularies etc for Geonames in Blazegraph ?

I have implementation of custom geodata in Wikidata Query Service
(https://www.mediawiki.org/wiki/Wikibase/Indexing/RDF_Dump_Format#Globe_coordinate)
but it uses single WKT literal instead of two literals. Making a single
literal custom parser should not be hard - mostly implementing
IGeoSpatialLiteralSerializer and adding suitable config as
com.bigdata.rdf.store.AbstractTripleStore.geoSpatialDatatypeConfig.
I could point you to specific code if interested.

I don't think there's currently a way to index using multiple predicates.
-- 
Stas Malyshev
sma...@wi...