Main.java example

Explorer
jena-master
/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// Package
///////////////
package jena.examples.ontology.describeClass;


// Imports
///////////////
import java.util.Iterator;

import org.apache.jena.ontology.*;
import org.apache.jena.rdf.model.ModelFactory;


/**
 * <p>
 * Execution wrapper for describe-class example
 * </p>
 */
public class Main {
    // Constants
    //////////////////////////////////

    // Static variables
    //////////////////////////////////

    // Instance variables
    //////////////////////////////////

    // Constructors
    //////////////////////////////////

    // External signature methods
    //////////////////////////////////

    public static void main( String[] args ) {
        // read the argument file, or the default
        String source = (args.length == 0) ? "http://www.w3.org/2001/sw/WebOnt/guide-src/wine" : args[0];

        OntModel m = ModelFactory.createOntologyModel( OntModelSpec.OWL_MEM, null );

        // we have a local copy of the wine ontology
        addFoodWineAltPaths( m.getDocumentManager() );

        // read the source document
        m.read( source );

        DescribeClass dc = new DescribeClass();

        if (args.length >= 2) {
            // we have a named class to describe
            OntClass c = m.getOntClass( args[1] );
            dc.describeClass( System.out, c );
        }
        else {
            for (Iterator<OntClass> i = m.listClasses();  i.hasNext(); ) {
                // now list the classes
                dc.describeClass( System.out, i.next() );
            }
        }
    }


    // Internal implementation methods
    //////////////////////////////////

    /**
     * Add alternate paths to save downloading the default ontologies from the Web
     */
    protected static void addFoodWineAltPaths( OntDocumentManager odm ) {
        odm.addAltEntry( "http://www.w3.org/2001/sw/WebOnt/guide-src/wine",
                         "file:testing/reasoners/bugs/wine.owl" );
        odm.addAltEntry( "http://www.w3.org/2001/sw/WebOnt/guide-src/wine.owl",
                         "file:testing/reasoners/bugs/wine.owl" );
        odm.addAltEntry( "http://www.w3.org/2001/sw/WebOnt/guide-src/food",
                         "file:testing/reasoners/bugs/food.owl" );
        odm.addAltEntry( "http://www.w3.org/2001/sw/WebOnt/guide-src/food.owl",
                         "file:testing/reasoners/bugs/food.owl" );
    }

    //==============================================================================
    // Inner class definitions
    //==============================================================================

}