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AGReasoningHasValue.java

package com.franz.agbase.examples;



import com.franz.agbase.*;



public class AGReasoningHasValue {



    /**

     * Demonstrates reasoning involving owl:TransitiveProperty

     * 

     * @param args unused

     * @throws AllegroGraphException 

     */

    public static void main(String[] args) throws AllegroGraphException {

        // Connect to server, which must already be running.

        AllegroGraphConnection ags = new AllegroGraphConnection();

        try {

            ags.enable();

        } catch (Exception e) {

            throw new AllegroGraphException("Server connection problem", e);

        }



        // Create fresh triple-store for this example.

        AllegroGraph ts = ags.renew("transitiveproperty", AGPaths.TRIPLE_STORES);

        

        // Register your namespaces

        ts.registerNamespace("ex","http://example.org/");

        

        // Load relevant triples from an ontology

        AGLoadNtriples.loadNTriplesWithTiming(ts,AGPaths.dataSources("space-mission-atlantis.ntriples"));

        

        // Add some data

        ts.addStatement("!ex:mission1","!rdf:type","!ex:AtlantisMission");

        

        // Demonstrate hasValue reasoning

        String query = "PREFIX ex: <http://example.org/> " +

            "SELECT ?shuttle WHERE { ex:mission1 ex:shuttleUsed ?shuttle }";

        SPARQLQuery sq = new SPARQLQuery();

        sq.setTripleStore(ts);

        sq.setQuery(query);

        sq.setIncludeInferred(true);

        sq.setHasValue(true);

        AGSparqlSelect.doSparqlSelect(sq);



        // Close the triple store and disconnect from the server.

        ts.closeTripleStore();

        ags.disable();

    }



}
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