Ontop-spatial
Ontop-spatial can create virtual geospatial RDF graphs on top of your geospatial databases.
Do you want to get the most of your relational data combining them with linked geospatial data without converting them to RDF? No problem. Ontop-spatial can create virtual geospatial RDF graphs on top of your geospatial databases (Currently PostGIS, SpatiaLite and Oracle spatial are supported). Your geometries will be mapped to GeoSPARQL geometry literals using ontologies and R2RML/OBDA mappings.
Execution environment: linux
Version of the environment: Linux
Additional information: Ontop-spatial supports the following GeoSPARQL components: core, Topology vocabulary, Geometry topology extension, RDFS entailment extension, Query rewrite extension and subset of the Geometry Extension. Deciding to create virtual geospatial RDF graphs instead of materializing them does not necessarily mean that efficiency needs to be sacrificed. In fact, experimental evaluation has shown that in most cases, Ontop-spatial achieves better response times than traditional geospatial RDF stores
The project is a Maven project. Compiling, running the unit tests, building the release binaries all can be done using maven. To make it more practical we created several .sh scripts that you can run on any unix environment that has maven installed. The scripts are located in the folder 'scripts', look at that folder for more information.