testmodelpolymorphism.java

Jena推理机

/*
 * (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007 Hewlett-Packard Development Company, LP  
 * [see end of file]
 */

package com.hp.hpl.jena.rdf.model.test;

import com.hp.hpl.jena.graph.test.GraphTestBase;
import com.hp.hpl.jena.rdf.model.*;
import junit.framework.*;

public class TestModelPolymorphism extends GraphTestBase
    {
    public static TestSuite suite()
        { return new TestSuite( TestModelPolymorphism.class ); }   
        
    public TestModelPolymorphism(String name)
        {
        super(name);
        }

    public void testPoly()
        {
        Model m = ModelFactory.createDefaultModel();
        Resource r = m.createResource( "http://www.electric-hedgehog.net/a-o-s.html" );
        assertFalse( "the Resouce should not be null", r == null );
        assertTrue( "the Resource can be a Property", r.canAs( Property.class ) );
        Property p = (Property) r.as( Property.class );
        assertFalse( "the Property should not be null", p == null );
        assertFalse( "the Resource and Property should not be identical", r == p );
        }
    }


/*
 * (c) Copyright 2002, 2003, 2004, 2005, 2006, 2007 Hewlett-Packard Development Company, LP
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. The name of the author may not be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */