AGISWCASWC2007.java
package com.franz.agbase.examples;
import com.franz.agbase.*;
public class AGISWCASWC2007 {
/**
* Demonstrates loading and querying of the ISWC+ASWC 2007 RDF data set.
*
* @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 a fresh triple store
AllegroGraph ts = ags.renew("iwscawsc2007", AGPaths.TRIPLE_STORES);
// Load the data
AGLoadRDF.loadRDFWithTiming(ts,AGPaths.dataSources("iswc-aswc-2007-complete.rdf"));
// Index the triple store for faster querying
AGIndexAllTriples.indexAllTriplesWithTiming(ts);
// Query the data set for a summary of the business intelligence
// tutorial being taught by Jans Aasman
String query =
"PREFIX tutorial: <http://data.semanticweb.org/conference/iswc-aswc/2007/tutorial/> " +
"PREFIX ical: <http://www.w3.org/2002/12/cal/ical#> " +
"SELECT ?summary " +
"WHERE { tutorial:business-intelligence ical:summary ?summary }";
// Query the store and show the results
SPARQLQuery sq = new SPARQLQuery();
sq.setTripleStore(ts);
sq.setQuery(query);
AGSparqlSelect.doSparqlSelect(sq);
// Close the triple store and disconnect from the server.
ts.closeTripleStore();
ags.disable();
}
}
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