/*
 * (c) Copyright 2002, 2003 Hewlett-Packard Development Company, LP
 * [See end of file]
 */

import com.hp.hpl.jena.rdf.model.* ;
import com.hp.hpl.jena.rdql.* ;

import java.util.* ;
import java.io.* ;

public class rdql_code3
{
    static public void main(String[] argv)
    {
        try {
            Model model = ModelFactory.createDefaultModel() ;
            model.read(new FileInputStream("vc-db-1.rdf"), 
                       "http://nowhere/",
                       "RDF/XML") ;

            String queryString = "SELECT ?x, ?fname "+
            "WHERE (?x, <http://www.w3.org/2001/vcard-rdf/3.0#FN>, ?fname)" ;

            Query query = new Query(queryString) ;
            query.setSource(model);
            QueryExecution qe = new QueryEngine(query) ;

            QueryResults results = qe.exec() ;
            for ( Iterator iter = results ; iter.hasNext() ; )
            {
                ResultBinding res = (ResultBinding)iter.next() ;
                Resource r = (Resource)res.get("x") ;
                Literal l = (Literal)res.get("fname") ;
                System.out.println("Resource: "+r+"   Literal: "+l);
                for ( StmtIterator sIter = r.listProperties(); sIter.hasNext() ; )
                {
                    Statement s = sIter.nextStatement() ;
                    System.out.println("   Predicate: "+s.getPredicate()) ;
                }
                break ;
            }
            // Always close result iterator - frees work space.
            results.close() ;
            
        } catch (Exception ex)
        {
            System.err.println("Exception: "+ex) ;
            ex.printStackTrace(System.err) ;
        }
    }
}

/*
 *  (c) Copyright 2002, 2003 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.
 */