# AGReasoningDomainRange.java

`package com.franz.agbase.examples;
import com.franz.agbase.*;
public class AGReasoningDomainRange {
/**
* Demonstrates reasoning involving rdfs:domain and rdfs:range
*
* @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("domainrange", AGPaths.TRIPLE_STORES);
// Register your namespaces
ts.registerNamespace("ex","http://example.org/");
// Add some triples to the store
ts.addStatement("!ex:a","!ex:p", "!ex:b");
ts.addStatement("!ex:p","!rdfs:domain", "!ex:D");
ts.addStatement("!ex:p","!rdfs:range", "!ex:R");
// Retrieve some triples without reasoning (none in this case)
TriplesIterator cc = ts.getStatements(false,null,"!rdf:type",null);
System.out.println("Retrieving all rdf:type's in the store (should be none):");
AGUtils.showTriples(cc);
// Now demonstrate reasoning
cc = ts.getStatements(true,"!ex:a","!rdf:type",null);
System.out.println("Inferring the rdf:type of ex:a");
AGUtils.showTriples(cc);
cc = ts.getStatements(true,"!ex:b","!rdf:type",null);
System.out.println("Inferring the rdf:type of ex:b");
AGUtils.showTriples(cc);
// Close the triple store and disconnect from the server.
ts.closeTripleStore();
ags.disable();
}
}
`

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