examples.java

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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: Examples.java 470245 2006-11-02 06:34:33Z minchau $
 */
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.Reader;
import java.io.UnsupportedEncodingException;
import java.util.Properties;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.OutputKeys;
import javax.xml.transform.Result;
import javax.xml.transform.Source;
import javax.xml.transform.Templates;
import javax.xml.transform.Transformer;
import javax.xml.transform.TransformerConfigurationException;
import javax.xml.transform.TransformerException;
import javax.xml.transform.TransformerFactory;
import javax.xml.transform.dom.DOMResult;
import javax.xml.transform.dom.DOMSource;
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.StreamResult;
import javax.xml.transform.stream.StreamSource;

import org.w3c.dom.Node;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;
import org.xml.sax.XMLFilter;
import org.xml.sax.XMLReader;
import org.xml.sax.helpers.XMLReaderFactory;
/**
 * Some examples to show how the Simple API for Transformations
 * could be used.
 * 
 * Xalan Developers: please see 
 * xml-xalan/test/java/src/org/apache/qetest/trax/ExamplesTest.java
 * when updating this file, and update that test file as well.
 *
 * @author <a href="mailto:[e-mail]">Scott Boag</a>
 */
public class Examples
{
  /**
   * Method main
   */
  public static void main(String argv[])
          throws TransformerException, TransformerConfigurationException, IOException, SAXException,
                 ParserConfigurationException, FileNotFoundException
  {
    System.out.println("\n\n==== exampleSimple ====");
    try {
        exampleSimple1("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleSimple2 (see foo.out) ====");
    try {
        exampleSimple2("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleFromStream ====");
    try {
        exampleFromStream("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleFromReader ====");
    try {
        exampleFromReader("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleUseTemplatesObj ====");
    try {
        exampleUseTemplatesObj("xml/foo.xml", "xml/baz.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleContentHandlerToContentHandler ====");
    try {
        exampleContentHandlerToContentHandler("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleXMLReader ====");
    try {
        exampleXMLReader("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleXMLFilter ====");
    try {
        exampleXMLFilter("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleXMLFilterChain ====");
    try {
        exampleXMLFilterChain("xml/foo.xml", "xsl/foo.xsl", "xsl/foo2.xsl", "xsl/foo3.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleDOM2DOM ====");
    try {
        exampleDOM2DOM("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleParam ====");
    try {
        exampleParam("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleTransformerReuse ====");
    try {
        exampleTransformerReuse("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleOutputProperties ====");
    try {
        exampleOutputProperties("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleUseAssociated ====");
    try {
        exampleUseAssociated("xml/foo.xml");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleContentHandler2DOM ====");
    try {
        exampleContentHandler2DOM("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleAsSerializer ====");
    try {
        exampleAsSerializer("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 
    
    System.out.println("\n\n==== exampleContentHandler2DOM ====");
    try {
        exampleContentHandler2DOM("xml/foo.xml", "xsl/foo.xsl");
    } catch( Exception ex ) { 
        handleException(ex);
    } 

    System.out.println("\n==== done! ====");
  }
  
  /**
   * Show the simplest possible transformation from system id 
   * to output stream.
   */
  public static void exampleSimple1(String sourceID, String xslID)
    throws TransformerException, TransformerConfigurationException
  {
    // Create a transform factory instance.
    TransformerFactory tfactory = TransformerFactory.newInstance();
    
    // Create a transformer for the stylesheet.
    Transformer transformer 
      = tfactory.newTransformer(new StreamSource(xslID));
    
    // Transform the source XML to System.out.
    transformer.transform( new StreamSource(sourceID),
                           new StreamResult(new OutputStreamWriter(System.out)));
  }
  
  /**
   * Show the simplest possible transformation from File 
   * to a File.
   */
  public static void exampleSimple2(String sourceID, String xslID)
    throws TransformerException, TransformerConfigurationException
  {
    // Create a transform factory instance.
    TransformerFactory tfactory = TransformerFactory.newInstance();
    
    // Create a transformer for the stylesheet.
    Transformer transformer 
      = tfactory.newTransformer(new StreamSource(xslID));
    
    // Transform the source XML to foo.out.
    transformer.transform( new StreamSource(new File(sourceID)),
                           new StreamResult(new File("foo.out")));
  }

  
  /**
   * Show simple transformation from input stream to output stream.
   */
  public static void exampleFromStream(String sourceID, String xslID)
    throws TransformerException, TransformerConfigurationException,
           FileNotFoundException
  {
    // Create a transform factory instance.
    TransformerFactory tfactory = TransformerFactory.newInstance();

    InputStream xslIS = new BufferedInputStream(new FileInputStream(xslID));
    StreamSource xslSource = new StreamSource(xslIS);
    // Note that if we don't do this, relative URLs can not be resolved correctly!
    xslSource.setSystemId(xslID);

    // Create a transformer for the stylesheet.
    Transformer transformer = tfactory.newTransformer(xslSource);
    
    InputStream xmlIS = new BufferedInputStream(new FileInputStream(sourceID));
    StreamSource xmlSource = new StreamSource(xmlIS);
    // Note that if we don't do this, relative URLs can not be resolved correctly!
    xmlSource.setSystemId(sourceID);
    
    // Transform the source XML to System.out.
    transformer.transform( xmlSource, new StreamResult(new OutputStreamWriter(System.out)));
  }
  
  /**
   * Show simple transformation from reader to output stream.  In general 
   * this use case is discouraged, since the XML encoding can not be 
   * processed.
   */
  public static void exampleFromReader(String sourceID, String xslID)
    throws TransformerException, TransformerConfigurationException,
           FileNotFoundException, UnsupportedEncodingException
  {
    // Create a transform factory instance.
    TransformerFactory tfactory = TransformerFactory.newInstance();

    // Note that in this case the XML encoding can not be processed!
    Reader xslReader = new BufferedReader(new InputStreamReader(new FileInputStream(xslID), "UTF-8"));
    StreamSource xslSource = new StreamSource(xslReader);
    // Note that if we don't do this, relative URLs can not be resolved correctly!