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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: Trace.java 470245 2006-11-02 06:34:33Z minchau $
*/
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.stream.StreamResult;
import javax.xml.transform.stream.StreamSource;
import org.apache.xalan.trace.PrintTraceListener;
import org.apache.xalan.trace.TraceManager;
import org.apache.xalan.transformer.TransformerImpl;
/**
* Sample for demonstrating Xalan "trace" interface.
* Usage: run in Trace directory: java Trace
* For an extensions trace sample, run in extensions
* directory: java Trace 3-java-namespace
*/
public class Trace
{
public static void main (String[] args)
throws java.io.IOException,
TransformerException, TransformerConfigurationException,
java.util.TooManyListenersException,
org.xml.sax.SAXException
{
String fileName = "foo";
if (args.length > 0)
fileName = args[0];
// Set up a PrintTraceListener object to print to a file.
java.io.FileWriter fw = new java.io.FileWriter("events.log");
java.io.PrintWriter pw = new java.io.PrintWriter(fw, true);
PrintTraceListener ptl = new PrintTraceListener(pw);
// Print information as each node is 'executed' in the stylesheet.
ptl.m_traceElements = true;
// Print information after each result-tree generation event.
ptl.m_traceGeneration = true;
// Print information after each selection event.
ptl.m_traceSelection = true;
// Print information whenever a template is invoked.
ptl.m_traceTemplates = true;
// Print information whenever an extension call is made.
ptl.m_traceExtension = true;
// Set up the transformation
TransformerFactory tFactory = TransformerFactory.newInstance();
Transformer transformer = tFactory.newTransformer(new StreamSource(fileName + ".xsl"));
// Cast the Transformer object to TransformerImpl.
if (transformer instanceof TransformerImpl)
{
TransformerImpl transformerImpl = (TransformerImpl)transformer;
// Register the TraceListener with a TraceManager associated
// with the TransformerImpl.
TraceManager trMgr = transformerImpl.getTraceManager();
trMgr.addTraceListener(ptl);
// Perform the transformation --printing information to
// the events log during the process.
transformer.transform
( new StreamSource(fileName + ".xml"),
new StreamResult(new java.io.FileWriter(fileName + ".out")) );
}
// Close the PrintWriter and FileWriter.
pw.close();
fw.close();
System.out.println("**The output is in " + fileName + ".out; the log is in events.log ****");
}
}
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