code: /*
   * 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.
   */
  /*
   * $Id$
   */
  
  import java.io.IOException;
  
  import javax.xml.transform.TransformerConfigurationException;
  import javax.xml.transform.TransformerException;
  import javax.xml.transform.TransformerFactory;
  import javax.xml.transform.sax.SAXResult;
  import javax.xml.transform.sax.SAXSource;
  import javax.xml.transform.sax.SAXTransformerFactory;
  import javax.xml.transform.sax.TransformerHandler;
  import javax.xml.transform.stream.StreamSource;
  
  import org.apache.xml.serializer.Serializer;
  import org.apache.xml.serializer.SerializerFactory;
  import org.apache.xml.serializer.OutputPropertiesFactory;
  import org.xml.sax.SAXException;
  import org.xml.sax.XMLReader;
  import org.xml.sax.helpers.XMLReaderFactory;
  
    /**
     * This example shows how to chain a series of transformations by
     * piping SAX events from one Transformer to another. Each Transformer
     * operates as a SAX2 XMLFilter/XMLReader.
     */
  public class Pipe
  {
  	public static void main(String[] args)
  	throws TransformerException, TransformerConfigurationException, 
           SAXException, IOException	   
  	{
      // Instantiate  a TransformerFactory.
    	TransformerFactory tFactory = TransformerFactory.newInstance();
      // Determine whether the TransformerFactory supports The use uf SAXSource 
      // and SAXResult
      if (tFactory.getFeature(SAXSource.FEATURE) && tFactory.getFeature(SAXResult.FEATURE))
      { 
        // Cast the TransformerFactory to SAXTransformerFactory.
        SAXTransformerFactory saxTFactory = ((SAXTransformerFactory) tFactory);	  
        // Create a TransformerHandler for each stylesheet.
        TransformerHandler tHandler1 = saxTFactory.newTransformerHandler(new StreamSource("foo1.xsl"));
        TransformerHandler tHandler2 = saxTFactory.newTransformerHandler(new StreamSource("foo2.xsl"));
        TransformerHandler tHandler3 = saxTFactory.newTransformerHandler(new StreamSource("foo3.xsl"));
      
        // Create an XMLReader.
  	    XMLReader reader = XMLReaderFactory.createXMLReader();
        reader.setContentHandler(tHandler1);
        reader.setProperty("http://xml.org/sax/properties/lexical-handler", tHandler1);
  
        tHandler1.setResult(new SAXResult(tHandler2));
        tHandler2.setResult(new SAXResult(tHandler3));
  
        // transformer3 outputs SAX events to the serializer.
        java.util.Properties xmlProps = OutputPropertiesFactory.getDefaultMethodProperties("xml");
        xmlProps.setProperty("indent", "yes");
        xmlProps.setProperty("standalone", "no");
        Serializer serializer = SerializerFactory.getSerializer(xmlProps);
        serializer.setOutputStream(System.out);
        tHandler3.setResult(new SAXResult(serializer.asContentHandler()));
  
  	    // Parse the XML input document. The input ContentHandler and output ContentHandler
        // work in separate threads to optimize performance.   
        reader.parse("foo.xml");
      }
    }
  }
  