AGDuplicates.java
package com.franz.agbase.examples;
import com.franz.agbase.*;
public class AGDuplicates {
/**
* Demonstrates some basic facts about duplicate triples.
*
* @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("duplicates", AGPaths.TRIPLE_STORES);
// Load some triples
String ntripleFile = AGPaths.dataSources("test.nt");
System.out.println("Loading N-Triples from " + ntripleFile);
Long n = ts.loadNTriples(ntripleFile);
System.out.println("Loaded " + n + " triples.");
// Load them again
System.out.println("Loading them again from " + ntripleFile);
n = ts.loadNTriples(ntripleFile);
System.out.println("Loaded another " + n + " triples, totaling: " + ts.numberOfTriples());
// Get all triples in the store and show them -- note the duplicates.
TriplesIterator cc = ts.getStatements(null, null, null);
AGUtils.showTriples(cc);
// Close the triple store and disconnect from the server.
ts.closeTripleStore();
ags.disable();
}
}
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