org.dom4j.samples.VisitorDemo2.java Source code

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Here is the source code for org.dom4j.samples.VisitorDemo2.java

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/*
 * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
 * 
 * This software is open source. 
 * See the bottom of this file for the licence.
 * 
 * $Id: VisitorDemo2.java,v 1.4 2005/01/29 14:52:57 maartenc Exp $
 */

package org.dom4j.samples;

import org.dom4j.Document;
import org.dom4j.DocumentFactory;
import org.dom4j.io.SAXReader;

/**
 * This demo uses the Visitor Pattern in DOM4J to display the effect of changing
 * the {@link DocumentFactory}used when reading a DOM4J object model from a
 * {@link SAXReader}.
 * 
 * @author <a href="mailto:james.strachan@metastuff.com">James Strachan </a>
 * @version $Revision: 1.4 $
 */
public class VisitorDemo2 extends VisitorDemo {

    /** The DocumentFactory class name to use */
    protected String documentFactoryClassName;

    public static void main(String[] args) {
        run(new VisitorDemo2(), args);
    }

    public VisitorDemo2() {
    }

    public void run(String[] args) throws Exception {
        if (args.length < 1) {
            printUsage("<XML document URL> [<Document Factory Class Name>]");
            return;
        }

        String xmlFile = args[0];

        documentFactoryClassName = (args.length > 1) ? args[1] : null;

        Document document = parse(xmlFile);
        process(document);
    }

    protected SAXReader createSAXReader() throws Exception {
        println("Using SAX parser: " + System.getProperty("org.xml.sax.driver", "default"));

        SAXReader answer = new SAXReader();
        if (documentFactoryClassName != null) {
            try {
                Class theClass = Class.forName(documentFactoryClassName);
                DocumentFactory factory = (DocumentFactory) theClass.newInstance();
                if (factory != null) {
                    println("DocumentFactory:  " + factory);
                    answer.setDocumentFactory(factory);
                }
            } catch (Exception e) {
                println("ERROR: Failed to create an instance of DocumentFactory: " + documentFactoryClassName);
                println("Exception: " + e);
                e.printStackTrace();
            }
        }
        return answer;
    }
}

/*
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided that the
 * following conditions are met:
 * 
 * 1. Redistributions of source code must retain copyright statements and
 * notices. Redistributions must also contain a copy of this document.
 * 
 * 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 "DOM4J" must not be used to endorse or promote products derived
 * from this Software without prior written permission of MetaStuff, Ltd. For
 * written permission, please contact dom4j-info@metastuff.com.
 * 
 * 4. Products derived from this Software may not be called "DOM4J" nor may
 * "DOM4J" appear in their names without prior written permission of MetaStuff,
 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
 * 
 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
 * 
 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESSED 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 METASTUFF, LTD. OR ITS CONTRIBUTORS 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.
 * 
 * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
 * 
 * $Id: VisitorDemo2.java,v 1.4 2005/01/29 14:52:57 maartenc Exp $
 */