001: /*
002: * (c) Copyright 2003, 2004, Hewlett-Packard Development Company, LP
003: * All rights reserved.
004: * [See end of file]
005: * $Id: Tutorial10.java,v 1.3 2005/10/06 17:49:05 andy_seaborne Exp $
006: */
007: package jena.examples.rdf;
008:
009: import com.hp.hpl.jena.rdf.model.*;
010: import com.hp.hpl.jena.util.FileManager;
011: import com.hp.hpl.jena.vocabulary.*;
012:
013: import java.io.InputStream;
014: import java.io.InputStreamReader;
015: import java.io.PrintWriter;
016:
017: /** Tutorial 10 - demonstrate a container
018: *
019: * @author bwm - updated by kers/Daniel
020: * @version Release='$Name: $' Revision='$Revision: 1.3 $' Date='$Date: 2005/10/06 17:49:05 $'
021: */
022: public class Tutorial10 extends Object {
023:
024: static final String inputFileName = "vc-db-1.rdf";
025:
026: public static void main(String args[]) {
027: // create an empty model
028: Model model = ModelFactory.createDefaultModel();
029:
030: // use the class loader to find the input file
031: InputStream in = FileManager.get().open(inputFileName);
032: if (in == null) {
033: throw new IllegalArgumentException("File: " + inputFileName
034: + " not found");
035: }
036:
037: // read the RDF/XML file
038: model.read(new InputStreamReader(in), "");
039:
040: // create a bag
041: Bag smiths = model.createBag();
042:
043: // select all the resources with a VCARD.FN property
044: // whose value ends with "Smith"
045: StmtIterator iter = model.listStatements(new SimpleSelector(
046: null, VCARD.FN, (RDFNode) null) {
047: public boolean selects(Statement s) {
048: return s.getString().endsWith("Smith");
049: }
050: });
051: // add the Smith's to the bag
052: while (iter.hasNext()) {
053: smiths.add(iter.nextStatement().getSubject());
054: }
055:
056: // print the graph as RDF/XML
057: model.write(new PrintWriter(System.out));
058: System.out.println();
059:
060: // print out the members of the bag
061: NodeIterator iter2 = smiths.iterator();
062: if (iter2.hasNext()) {
063: System.out.println("The bag contains:");
064: while (iter2.hasNext()) {
065: System.out.println(" "
066: + ((Resource) iter2.next())
067: .getRequiredProperty(VCARD.FN)
068: .getString());
069: }
070: } else {
071: System.out.println("The bag is empty");
072: }
073: }
074: }
075:
076: /*
077: * (c) Copyright 2003, 2004 Hewlett-Packard Development Company, LP
078: * All rights reserved.
079: *
080: * Redistribution and use in source and binary forms, with or without
081: * modification, are permitted provided that the following conditions
082: * are met:
083: * 1. Redistributions of source code must retain the above copyright
084: * notice, this list of conditions and the following disclaimer.
085: * 2. Redistributions in binary form must reproduce the above copyright
086: * notice, this list of conditions and the following disclaimer in the
087: * documentation and/or other materials provided with the distribution.
088: * 3. The name of the author may not be used to endorse or promote products
089: * derived from this software without specific prior written permission.
090: *
091: * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
092: * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
093: * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
094: * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
095: * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
096: * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
097: * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
098: * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
099: * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
100: * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
101: */
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