A Semantika Endpoint to enable data query through HTTP service
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Semantika Sesame

This project aims to setup a Semantika SPARQL endpoint through Sesame Workbench. The endpoint uses the underlying database system to answer SPARQL queries from users.

Latest release: 1.2 (build 17) is available! (July 8, 2014)

Easy Installation

To test the installation: In the workbench page, create "New repository" using the left menu. A "New Repository" page appears with "Type: Semantika Virtual RDF Store" shows in the drop-down menu.

Creating an Endpoint

Below is an example for creating an endpoint for our Semantika-MusicBrainz project.

  • To create an endpoint, you will need a configuration file that provides the application resources.
   <application-factory name="musicbrainz-endpoint">
         <property name="connection.url">jdbc:h2:tcp://localhost/mbzdb</property>
         <property name="connection.driver_class">org.h2.Driver</property>
         <property name="connection.username">sa</property>
         <property name="connection.password"></property>
      <mapping-source resource="file:///home/user/musicbrainz/res/artist.tml.xml" strict-parsing="false"/>

Notice that the URL protocol file:// is used to locate the mapping resource at /home/user/musicbrainz/res/artist.tml.xml

  • Complete the "New Repository" form by filling the ID, title and configuration file location.

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  • Once the endpoint was succesfully created, make a query using the "Query" menu item. The example asks for all artists that performed as a solo artist and each name.

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  • Check the returned results.

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Need Help?

Check our Wikipage for a brief introduction. Need more help? Join OBDA Semantika Forum.