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Java > Open Source Codes > jena > examples > rdf > Tutorial07


1 /*
2  * (c) Copyright 2003, 2004, Hewlett-Packard Development Company, LP
3  * All rights reserved.
4  * [See end of file]
5  * $Id: Tutorial07.java,v 1.1 2005/03/12 13:52:28 andy_seaborne Exp $
6  */
7 package jena.examples.rdf ;
8
9 import com.hp.hpl.jena.rdf.model.*;
10 import com.hp.hpl.jena.util.FileManager;
11 import com.hp.hpl.jena.vocabulary.*;
12
13 import java.io.*;
14
15 /** Tutorial 7 - selecting the VCARD resources
16  *
17  * @author bwm - updated by kers/Daniel
18  * @version Release='$Name: $' Revision='$Revision: 1.1 $' Date='$Date: 2005/03/12 13:52:28 $'
19  */
20 public class Tutorial07 extends Object JavaDoc {
21     
22     static final String JavaDoc inputFileName = "vc-db-1.rdf";
23     
24     public static void main (String JavaDoc args[]) {
25         // create an empty model
26 Model model = ModelFactory.createDefaultModel();
27        
28         // use the FileManager to find the input file
29 InputStream in = FileManager.get().open(inputFileName);
30         if (in == null) {
31             throw new IllegalArgumentException JavaDoc( "File: " + inputFileName + " not found");
32         }
33         
34         // read the RDF/XML file
35 model.read( in, "");
36         
37         // select all the resources with a VCARD.FN property
38 ResIterator iter = model.listSubjectsWithProperty(VCARD.FN);
39         if (iter.hasNext()) {
40             System.out.println("The database contains vcards for:");
41             while (iter.hasNext()) {
42                 System.out.println(" " + iter.nextResource()
43                                               .getRequiredProperty(VCARD.FN)
44                                               .getString() );
45             }
46         } else {
47             System.out.println("No vcards were found in the database");
48         }
49     }
50 }
51
52 /*
53  * (c) Copyright 2003, 2004 Hewlett-Packard Development Company, LP
54  * All rights reserved.
55  *
56  * Redistribution and use in source and binary forms, with or without
57  * modification, are permitted provided that the following conditions
58  * are met:
59  * 1. Redistributions of source code must retain the above copyright
60  * notice, this list of conditions and the following disclaimer.
61  * 2. Redistributions in binary form must reproduce the above copyright
62  * notice, this list of conditions and the following disclaimer in the
63  * documentation and/or other materials provided with the distribution.
64  * 3. The name of the author may not be used to endorse or promote products
65  * derived from this software without specific prior written permission.
66  *
67  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
68  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
69  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
70  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
71  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
72  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
73  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
74  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
75  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
76  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
77  */
78
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