# AGReasoningSubClassOf.java

`package com.franz.agbase.examples;
import com.franz.agbase.*;
public class AGReasoningSubClassOf {
/**
* Demonstrates basic reasoning involving rdfs:subClassOf
*
* @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("subclassof", AGPaths.TRIPLE_STORES);
// Register your namespaces
ts.registerNamespace("ex","http://example.org/");
// Add some triples to the store
ts.addStatement("!ex:A","!rdfs:subClassOf", "!ex:B");
ts.addStatement("!ex:B","!rdfs:subClassOf", "!ex:C");
ts.addStatement("!ex:a","!rdf:type", "!ex:A");
// Retrieve some triples without reasoning
TriplesIterator cc = ts.getStatements(false,"!ex:A","!rdfs:subClassOf",null);
System.out.println("Superclasses of ex:A in the store:");
AGUtils.showTriples(cc);
// Now with reasoning
cc = ts.getStatements(true,"!ex:A","!rdfs:subClassOf",null);
System.out.println("Superclasses of ex:A inferred:");
AGUtils.showTriples(cc);
// Confirm that an instance of type ex:A is an instance of its superclasses
cc = ts.getStatements(true,"!ex:a","!rdf:type",null);
System.out.println("Types of ex:a inferred:");
AGUtils.showTriples(cc);
// Close the store and disconnect from the server
ts.closeTripleStore();
ags.disable();
}
}
`

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