fop/src/org/apache/fop/tools/xslt/Xalan1Transform.java

/*
 * The Apache Software License, Version 1.1
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 * reserved.
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 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
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 *  any, must include the following acknowlegement:
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 *    Apache Software Foundation (http://www.apache.org/)."
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package org.apache.fop.tools.xslt;

import org.apache.xalan.xslt.*;

import java.io.FileInputStream;
import java.io.InputStream;
import java.util.Hashtable;
import org.w3c.dom.Document;

/**
 * Handles xslt tranformations via Xalan1 (non-trax)
 */

public class Xalan1Transform
{
    /** Cache of compiled stylesheets (filename, StylesheetRoot) */
    private static Hashtable _stylesheetCache = new Hashtable();

    public static StylesheetRoot getStylesheet(String xsltFilename, 
					       boolean cache)
	throws org.xml.sax.SAXException
    {
	if (cache && _stylesheetCache.containsKey(xsltFilename)) {
	    return (StylesheetRoot)_stylesheetCache.get(xsltFilename);
	}
	
	// Use XSLTProcessor to instantiate an XSLTProcessor.
	XSLTProcessor processor = XSLTProcessorFactory.getProcessor();
	
	XSLTInputSource xslSheet = new XSLTInputSource (xsltFilename);

	// Perform the transformation.
	StylesheetRoot compiledSheet =
	    processor.processStylesheet(xslSheet);
	if (cache) {
	    _stylesheetCache.put(xsltFilename, compiledSheet);
	}
	return compiledSheet;
    }

    public static void transform(String xmlSource, String xslURL,
                           String outputFile) 
	throws java.io.IOException,
	       java.net.MalformedURLException,
	       org.xml.sax.SAXException
    {
	try {
	    javax.xml.parsers.DocumentBuilder docBuilder =
		javax.xml.parsers.DocumentBuilderFactory.newInstance().
		newDocumentBuilder();
	    Document doc = docBuilder.parse(new FileInputStream(xmlSource));
	    transform(doc,xslURL,outputFile);
	}
	catch (javax.xml.parsers.ParserConfigurationException ex){
	    throw new org.xml.sax.SAXException(ex);
	}

    }
    
    public static void transform(Document xmlSource, 
				 String xslURL,
				 String outputFile) 
	throws java.io.IOException,
	       java.net.MalformedURLException, 
	       org.xml.sax.SAXException
    {

        XSLTResultTarget xmlResult = new XSLTResultTarget (outputFile);

	StylesheetRoot stylesheet = getStylesheet(xslURL,true);
	
        // Perform the transformation.
        stylesheet.process(XSLTProcessorFactory.getProcessor(),
			   xmlSource, xmlResult);
    }
    
       public static void transform(String  xmlSource, 
				 String xslURL,
				 java.io.Writer outputFile) 
	throws java.io.IOException,
	       java.net.MalformedURLException, 
	       org.xml.sax.SAXException
    {

        XSLTInputSource source = new XSLTInputSource (xmlSource);
        XSLTResultTarget xmlResult = new XSLTResultTarget (outputFile);

	StylesheetRoot stylesheet = getStylesheet(xslURL,true);
	
        // Perform the transformation.
        stylesheet.process(XSLTProcessorFactory.getProcessor(),
			   source, xmlResult);
    }

    public static void transform(Document xmlSource, 
				 InputStream xsl,
				 Document outputDoc) 
	throws java.io.IOException,
	       java.net.MalformedURLException, 
	       org.xml.sax.SAXException
    {

	XSLTInputSource source = new XSLTInputSource (xmlSource); 
	XSLTInputSource xslSheet = new XSLTInputSource(xsl);
	XSLTResultTarget xmlResult = new XSLTResultTarget (outputDoc);
	
	
        // Perform the transformation.
	XSLTProcessor processor = XSLTProcessorFactory.getProcessor();
	
        processor.process(source, xslSheet, xmlResult);
    }
}