Hi. I thought of using an external library (Geotools Library) to translate only GeoSPARQL functions to the functions supported by this library. So it is not limited to the postgres utilization (Postgis). However, this implementation (using geotools library) may require much modification of the original code
I'll check on the extension to determine what would be the best alternative. in order to perform the least amount of modifications to the original code. Thanks for your suggestions.
