Show AbstractDemo.java syntax highlighted
/*
* Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
*
* This software is open source.
* See the bottom of this file for the licence.
*
* $Id: AbstractDemo.java,v 1.1 2006/12/31 13:09:49 hanjun Exp $
*/
package org.dom4j.samples;
import org.dom4j.Document;
import org.dom4j.DocumentException;
import org.dom4j.io.OutputFormat;
import org.dom4j.io.XMLWriter;
/**
* An abstract base class for the demo programs.
*
* @author <a href="mailto:james.strachan@metastuff.com">James Strachan </a>
* @version $Revision: 1.1 $
*/
public abstract class AbstractDemo {
/** The format of XML / HTML that is output by the demo program */
protected OutputFormat format = new OutputFormat();
/** The writer of XML */
protected XMLWriter writer;
public AbstractDemo() {
}
protected static void run(AbstractDemo demo, String[] args) {
try {
demo.run(args);
} catch (DocumentException e) {
System.out.println("Exception occurred: " + e);
Throwable nestedException = e.getNestedException();
if (nestedException != null) {
System.out.println("NestedException: " + nestedException);
nestedException.printStackTrace();
} else {
e.printStackTrace();
}
} catch (Throwable t) {
System.out.println("Exception occurred: " + t);
t.printStackTrace();
}
}
public void run(String[] args) throws Exception {
if (args.length < 1) {
printUsage("no XML document URL specified");
return;
}
int idx = format.parseOptions(args, 0);
if (idx >= args.length) {
printUsage("no XML document URL specified");
return;
} else {
writer = createXMLWriter();
Document document = parse(args[idx]);
process(document);
}
}
protected Document parse(String xmlFile) throws Exception {
throw new RuntimeException(
"parse(String xmlFile) not implemented in this demo");
}
protected void process(Document document) throws Exception {
getXMLWriter().write(document);
getXMLWriter().flush();
}
protected void print(String text) {
System.out.print(text);
}
protected void println(String text) {
System.out.println(text);
}
protected void printUsage(String text) {
println("Usage: java " + getClass().getName() + " " + text);
}
protected XMLWriter getXMLWriter() throws Exception {
if (writer == null) {
writer = createXMLWriter();
}
return writer;
}
/**
* A Factory Method to create an <code>XMLWriter</code> instance allowing
* derived classes to change this behaviour
*/
protected XMLWriter createXMLWriter() throws Exception {
return new XMLWriter(System.out, format);
}
}
/*
* 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: AbstractDemo.java,v 1.1 2006/12/31 13:09:49 hanjun Exp $
*/
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