Instructions to set up Blazegraph for the Open SbD4Nano Semantic Landscape data

This repository contains instructions for using Blazegraph locally to host a SPARQL endpoint with the open SbD4Nano Semantic Landscape data. Blazegraph is no longer actively developed and Virtuoso or QLever may be more appropriate solutions.

Creating and starting

First, download the most recent blazegraph.jar release from this page. You need a Java environment, and you can start blazegraph then with:

java -jar blazegraph.jar

This will fire up a webpage and SPARQL endpoint, e.g. at http://localhost:9999/blazegraph/. Go to the Update tab and load the Turtle file of the open data. For large files, using the 'Type' "File Path or URL" is recommended. The URL https://raw.githubusercontent.com/h2020-sbd4nano/sbd-data-landscape-opendata/main/open.ttl can be used.

Querying the SPARQL endpoint

In the webinterface you can run SPARQL queries in the "Query" tab.

From the command line, the URL for the endpoint is: http://localhost:9999/blazegraph/sparql