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Java > Open Source Codes > com > hp > hpl > jena > rdf > model > RDFVisitor


1 /*
2   (c) Copyright 2003, 2004, 2005 Hewlett-Packard Development Company, LP
3   [See end of file]
4   $Id: RDFVisitor.java,v 1.3 2005/02/21 12:14:23 andy_seaborne Exp $
5 */
6
7 package com.hp.hpl.jena.rdf.model;
8
9 /**
10     @author kers
11     The interface for visiting (ie type-dispatching) an RDF Node.
12 */
13 public interface RDFVisitor
14     {
15     /**
16         Method to call when visiting a blank node r with identifier id.
17         @param r the blank RDF node being visited
18         @param id the identifier of that node
19         @return value to be returned from the visit
20     */
21     Object JavaDoc visitBlank( Resource r, AnonId id );
22     
23     /**
24         Method to call when visiting a URI node r with the given uri.
25         @param r the URI node being visited
26         @param uri the URI string of that node
27         @return value to be returned from the visit
28     */
29     Object JavaDoc visitURI( Resource r, String JavaDoc uri );
30     
31     /**
32         Method to call when visiting a literal RDF node l.
33         @param l the RDF Literal node
34         @return a value to be returned from the visit
35     */
36     Object JavaDoc visitLiteral( Literal l );
37     }
38
39
40 /*
41     (c) Copyright 2002, 2003, 2004, 2005 Hewlett-Packard Development Company, LP
42     All rights reserved.
43
44     Redistribution and use in source and binary forms, with or without
45     modification, are permitted provided that the following conditions
46     are met:
47
48     1. Redistributions of source code must retain the above copyright
49        notice, this list of conditions and the following disclaimer.
50
51     2. Redistributions in binary form must reproduce the above copyright
52        notice, this list of conditions and the following disclaimer in the
53        documentation and/or other materials provided with the distribution.
54
55     3. The name of the author may not be used to endorse or promote products
56        derived from this software without specific prior written permission.
57
58     THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
59     IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
60     OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
61     IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
62     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
63     NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
64     DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
65     THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
66     (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
67     THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
68 */
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