Community (Group Mode) Applications Data Space

Key ODS-Community to SIOC Mappings

ODS	SIOC	Sample Value
Application Instance	rdf:type	sioc:Community
Application Type	rdf:type	sioc:Community
Application Instance Name	sioc:id	"http://demo.openlinksw.com/dataspace/demo/community/demoCommunity"

Note: Default Graph URI value used in the queries below is: http://demo.openlinksw.com/dataspace

Data Space Post/Entry/Item Properties (sioc:Post predicates)

   * content
   * has_container
   * has_creator
   * id
   * link
   * links_to
   * topic (tags) 
   * has_reply (TBD)
   * reply_of  (TBD)

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX sioc:   <http://rdfs.org/sioc/ns#>
PREFIX sioct: <http://rdfs.org/sioc/types#>
SELECT distinct ?attribute
WHERE 
  {
    ?forum rdf:type sioc:Community .
    ?forum sioc:has_part ?parentf .
    ?parentf sioc:container_of ?post .
    ?post ?attribute ?o
  }
ORDER BY ?attribute

Dump of all Data Space entries for a given ODS Community

PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX sioc: <http://rdfs.org/sioc/ns#>
PREFIX dct: <http://purl.org/dc/elements/1.1/>
SELECT ?post ?title
WHERE 
  {
    ?forum rdf:type sioc:Community .
    ?forum sioc:has_part ?parentf .
    ?parentf sioc:container_of ?post .
    optional{?post dct:title ?title} .
  }

Sample Data (Live Query Results)

• Click *Here* for an Interactive-Web View of an ODS Community Data Space
• Click Here for a live SPARQL Query (via SPARQL Protocol) against a collection of Community Posts.

References

Specs

• SPARQL - Query Language
• SPARQL - Protocol
• SPARQL - XML based Results Format

FAQs

• SPARQL FAQ - Lee Feigenbaum

Presentations

• SPARQL Introduction - Dave Beckett, XTech 2004
• SPARQL Introduction - Dave Beckett, Standford University Presentation
• SPARQL Query Protocol presentation at XTech 2006 by Leigh Dodds
• SPASQL - Initiative to add SPARQL to MySQL?

Tutorials

• SPARQL Tutorial - Clark+Prasia & University of Manchester Tutorial
• Jena SPARQL Tutorial