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Access Ontop end point with Twinkle
elemguzel edited this page Apr 23, 2015
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Ontop can be used as SPARQL end-point by running Sesame Workbench. The ways to run Ontop as SPARQL end-point are remarked here. Accessing Ontop end-point with Twinkle SPARQL Query tool is explained as following:
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First of all we need to add a new repository to Sesame Workbench.
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Repositories -> New Repository
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Give a name and id to the new repository.
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Add the ontology and the mapping file to repository.
Then we can see the new repository on the repository list.
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At the second step;
- download Twinkle from here and add Ontop end-point as a remote service to etc/config.n3 file.
<http://localhost:8080/openrdf-sesame/repositories/1> a sources:Endpoint ; rdfs:label "Ontop end-point".
After adding Ontop end-point we can see it at the Remote Services list.
[[attachments/AccessOntopWithTwinkle/twinkle-1.png]]
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Click the Ontop end-point item on the Remote Services list. Now we are ready to test it with the following query:
PREFIX : <http://meraka/moss/exampleBooks.owl#>
SELECT ?x ?y ?name
WHERE {?x a :Book; :title ?y; :writtenBy ?z. ?z :name ?name.}