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Jena is a Java framework for building Semantic Web applications. It provides a programmatic environment for RDF, RDFS and OWL, SPARQL and includes a rule-based inference engine.
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/*
    (c)  Copyright 2000, 2001, 2002, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Hewlett-Packard Development Company, LP
    [See end of file]
    $Id: RDF.java,v 1.14 2008/01/02 12:07:29 andy_seaborne Exp $
*/

package com.hp.hpl.jena.vocabulary;

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

/**
    The standard RDF vocabulary.
    @author  bwm; updated by kers/daniel/christopher
    @version $Id: RDF.java,v 1.14 2008/01/02 12:07:29 andy_seaborne Exp $
*/

public class RDF{

    protected static final String uri ="http://www.w3.org/1999/02/22-rdf-syntax-ns#";

    /** returns the URI for this schema
        @return the URI for this schema
    */
    public static String getURI()
        { return uri; }

    protected static final Resource resource( String local )
        { return ResourceFactory.createResource( uri + local ); }

    protected static final Property property( String local )
        { return ResourceFactory.createProperty( uri, local ); }

    public static Property li( int i )
        { return property( "_" + i ); }

    public static final Resource Alt = resource( "Alt" );
    public static final Resource Bag = resource( "Bag" );
    public static final Resource Property = resource( "Property" );
    public static final Resource Seq = resource( "Seq" );
    public static final Resource Statement = resource( "Statement" );
    public static final Resource List = resource( "List" );
    public static final Resource nil = resource( "nil" );

    public static final Property first = property( "first" );
    public static final Property rest = property( "rest" );
    public static final Property subject = property( "subject" );
    public static final Property predicate = property( "predicate" );
    public static final Property object = property( "object" );
    public static final Property type = property( "type" );
    public static final Property value = property( "value" );

    /**
        The same items of vocabulary, but at the Node level, parked inside a
        nested class so that there's a simple way to refer to them.
    */
    public static final class Nodes
        {
        public static final Node Alt = RDF.Alt.asNode();
        public static final Node Bag = RDF.Bag.asNode();
        public static final Node Property = RDF.Property.asNode();
        public static final Node Seq = RDF.Seq.asNode();
        public static final Node Statement = RDF.Statement.asNode();
        public static final Node List = RDF.List.asNode();
        public static final Node nil = RDF.nil.asNode();
        public static final Node first = RDF.first.asNode();
        public static final Node rest = RDF.rest.asNode();
        public static final Node subject = RDF.subject.asNode();
        public static final Node predicate = RDF.predicate.asNode();
        public static final Node object = RDF.object.asNode();
        public static final Node type = RDF.type.asNode();
        public static final Node value = RDF.value.asNode();
        }

}

/*
 *  (c)   Copyright 2000, 2001, 2002, 2002, 2003, 2004, 2005, 2006, 2007, 2008 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.
 *
 * RDF.java
 *
 * Created on 28 July 2000, 18:12
 */