API Guide: REST and SPARQL

REST APIs

Articles API

REST interface version 0.3 to serve crawled articles and tweets, all the articles are indexed by the semantic third party API (TagMe API):

• JSON API: http://hypermedia.projectchronos.eu/visualize/articles/?api=true
• HTML page: http://hypermedia.projectchronos.eu/visualize/articles/

RDF/N3 APIs

The Web resources stored in the datastore and the entities in the Taxonomy need to be served also as NTRIPLES (see The GraphShard):

• example from WebResource model: http://hypermedia.projectchronos.eu/data/webresource/4504628272037888
• example from Taxonomy concept: http://hypermedia.projectchronos.eu/data/concept/infrared+telescopes

Components API

REST interface version 0.1 for components implemented! With some hypermedia flavor also (:

Check these URLs:

• entrypoint: http://hypermedia.projectchronos.eu/database/cots/
• by family: http://hypermedia.projectchronos.eu/database/cots/Spacecraft_Detector
• single: http://hypermedia.projectchronos.eu/database/cots/2545522e7a064d71be00f048c30b6e74

experimental version

• an experiment of swagger documented API at http://mild-ql.appspot.com , the repo here

REST Hypermedia API

• entrypoint: http://hypermedia.projectchronos.eu/hypermedia/spacecraft/

Taxonomy API

• entrypoint: http://taxonomy.projectchronos.eu
• taxonomy: http://taxonomy.projectchronos.eu/concepts/
• space resources: http://taxonomy.projectchronos.eu/space/
• space sensors: http://taxonomy.projectchronos.eu/sensors/

Graph API

• to be implemented

SPARQL API

• Retrieve all the planets:

hypermedia.projectchronos.eu/sparql?query=SELECT * WHERE { ?planet <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://ontology.projectchronos.eu/astronomy/Planet>. } 

• Retrieve all the planetary bodies (satellites)

hypermedia.projectchronos.eu/sparql?query=SELECT * WHERE { ?satellites <http://ontology.projectchronos.eu/astronomy/orbitsPlanet> ?planet} 

• Retrieve other bodies orbiting Sun

hypermedia.projectchronos.eu/sparql?query=SELECT * WHERE{?s <http://ontology.projectchronos.eu/astronomy/orbiting> <http://ontology.projectchronos.eu/solarsystem/Sun>.?s a ?type .FILTER (?type != <http://ontology.projectchronos.eu/astronomy/Planet>)}