@Override
protected void renderMergedOutputModel(
		Map<String, Object> model, HttpServletRequest request, HttpServletResponse response)
		throws Exception {

	Templates templates = this.cachedTemplates;
	if (templates == null) {
		templates = loadTemplates();
	}

	Transformer transformer = createTransformer(templates);
	configureTransformer(model, response, transformer);
	configureResponse(model, response, transformer);
	Source source = null;
	try {
		source = locateSource(model);
		if (source == null) {
			throw new IllegalArgumentException("Unable to locate Source object in model: " + model);
		}
		transformer.transform(source, createResult(response));
	}
	finally {
		closeSourceIfNecessary(source);
	}
}
 

/**
 * javax.xml.transform.sax.SAXTransformerFactory implementation.
 * Create an XMLFilter that uses the given source as the
 * transformation instructions.
 *
 * @param templates The source of the transformation instructions.
 * @return An XMLFilter object, or null if this feature is not supported.
 * @throws TransformerConfigurationException
 */
@Override
public XMLFilter newXMLFilter(Templates templates)
    throws TransformerConfigurationException
{
    try {
        return new com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter(templates);
    }
    catch (TransformerConfigurationException e1) {
        if (_errorListener != null) {
            try {
                _errorListener.fatalError(e1);
                return null;
            }
            catch (TransformerException e2) {
                new TransformerConfigurationException(e2);
            }
        }
        throw e1;
    }
}
 

/**
 * Create an XMLFilter that uses the given source as the
 * transformation instructions. Uses
 * com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 */
public XMLFilter newXMLFilter(Source src)
    throws TransformerConfigurationException {
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    Templates templates = _xsltcFactory.newTemplates(src);
    if (templates == null ) return null;
    return newXMLFilter(templates);
}
 

@Test
public void testConcurrentTransformations() throws Exception {
    final TransformerFactory tf = TransformerFactory.newInstance();
    final Source xslsrc = new StreamSource(new StringReader(XSL));
    final Templates tmpl = tf.newTemplates(xslsrc);
    concurrentTestPassed.set(true);

    // Execute multiple TestWorker tasks
    for (int id = 0; id < THREADS_COUNT; id++) {
        EXECUTOR.execute(new TransformerThread(tmpl.newTransformer(), id));
    }
    // Initiate shutdown of previously submitted task
    EXECUTOR.shutdown();
    // Wait for termination of submitted tasks
    if (!EXECUTOR.awaitTermination(THREADS_COUNT, TimeUnit.SECONDS)) {
        // If not all tasks terminates during the time out force them to shutdown
        EXECUTOR.shutdownNow();
    }
    // Check if all transformation threads generated the correct namespace prefix
    assertTrue(concurrentTestPassed.get());
}
 

public XMLFilter newXMLFilter(Templates templates)
    throws TransformerConfigurationException {
    try {
        return new com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter(templates);
    }
    catch(TransformerConfigurationException e1) {
        if (_xsltcFactory == null) {
            createXSLTCTransformerFactory();
        }
        ErrorListener errorListener = _xsltcFactory.getErrorListener();
        if(errorListener != null) {
            try {
                errorListener.fatalError(e1);
                return null;
            }
            catch( TransformerException e2) {
                new TransformerConfigurationException(e2);
            }
        }
        throw e1;
    }
}
 

@Test
public void testConcurrentTransformations() throws Exception {
    final TransformerFactory tf = TransformerFactory.newInstance();
    final Source xslsrc = new StreamSource(new StringReader(XSL));
    final Templates tmpl = tf.newTemplates(xslsrc);
    concurrentTestPassed.set(true);

    // Execute multiple TestWorker tasks
    for (int id = 0; id < THREADS_COUNT; id++) {
        EXECUTOR.execute(new TransformerThread(tmpl.newTransformer(), id));
    }
    // Initiate shutdown of previously submitted task
    EXECUTOR.shutdown();
    // Wait for termination of submitted tasks
    if (!EXECUTOR.awaitTermination(THREADS_COUNT, TimeUnit.SECONDS)) {
        // If not all tasks terminates during the time out force them to shutdown
        EXECUTOR.shutdownNow();
    }
    // Check if all transformation threads generated the correct namespace prefix
    assertTrue(concurrentTestPassed.get());
}
 

/**
 * Create an XMLFilter that uses the given source as the
 * transformation instructions. Uses
 * com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 */
public XMLFilter newXMLFilter(Source src)
    throws TransformerConfigurationException {
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    Templates templates = _xsltcFactory.newTemplates(src);
    if (templates == null ) return null;
    return newXMLFilter(templates);
}
 

public XMLFilter newXMLFilter(Templates templates)
    throws TransformerConfigurationException {
    try {
        return new com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter(templates);
    }
    catch(TransformerConfigurationException e1) {
        if (_xsltcFactory == null) {
            createXSLTCTransformerFactory();
        }
        ErrorListener errorListener = _xsltcFactory.getErrorListener();
        if(errorListener != null) {
            try {
                errorListener.fatalError(e1);
                return null;
            }
            catch( TransformerException e2) {
                new TransformerConfigurationException(e2);
            }
        }
        throw e1;
    }
}
 

/**
 * Create a Templates object that from the input stylesheet
 * Uses the com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 * @param source the stylesheet.
 * @return A Templates object.
 */
public Templates newTemplates(Source source)
    throws TransformerConfigurationException
{
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    _currFactory = _xsltcFactory;
    return _currFactory.newTemplates(source);
}
 

@Override
protected void renderMergedOutputModel(
		Map<String, Object> model, HttpServletRequest request, HttpServletResponse response)
		throws Exception {

	Templates templates = this.cachedTemplates;
	if (templates == null) {
		templates = loadTemplates();
	}

	Transformer transformer = createTransformer(templates);
	configureTransformer(model, response, transformer);
	configureResponse(model, response, transformer);
	Source source = null;
	try {
		source = locateSource(model);
		if (source == null) {
			throw new IllegalArgumentException("Unable to locate Source object in model: " + model);
		}
		transformer.transform(source, createResult(response));
	}
	finally {
		closeSourceIfNecessary(source);
	}
}
 

/**
 * javax.xml.transform.sax.SAXTransformerFactory implementation.
 * Create an XMLFilter that uses the given source as the
 * transformation instructions.
 *
 * @param templates The source of the transformation instructions.
 * @return An XMLFilter object, or null if this feature is not supported.
 * @throws TransformerConfigurationException
 */
@Override
public XMLFilter newXMLFilter(Templates templates)
    throws TransformerConfigurationException
{
    try {
        return new com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter(templates);
    }
    catch (TransformerConfigurationException e1) {
        if (_errorListener != null) {
            try {
                _errorListener.fatalError(e1);
                return null;
            }
            catch (TransformerException e2) {
                new TransformerConfigurationException(e2);
            }
        }
        throw e1;
    }
}
 

/**
 * Create a Templates object that from the input stylesheet
 * Uses the com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 * @param source the stylesheet.
 * @return A Templates object.
 */
public Templates newTemplates(Source source)
    throws TransformerConfigurationException
{
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    _currFactory = _xsltcFactory;
    return _currFactory.newTemplates(source);
}
 

/**
 * Create an XMLFilter that uses the given source as the
 * transformation instructions. Uses
 * com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 */
public XMLFilter newXMLFilter(Source src)
    throws TransformerConfigurationException {
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    Templates templates = _xsltcFactory.newTemplates(src);
    if (templates == null ) return null;
    return newXMLFilter(templates);
}
 

public XMLFilter newXMLFilter(Templates templates)
    throws TransformerConfigurationException {
    try {
        return new com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter(templates);
    }
    catch(TransformerConfigurationException e1) {
        if (_xsltcFactory == null) {
            createXSLTCTransformerFactory();
        }
        ErrorListener errorListener = _xsltcFactory.getErrorListener();
        if(errorListener != null) {
            try {
                errorListener.fatalError(e1);
                return null;
            }
            catch( TransformerException e2) {
                new TransformerConfigurationException(e2);
            }
        }
        throw e1;
    }
}
 

public Object getObject(final String... command) throws Exception {
	final Object templates = Gadgets.createTemplatesImpl(command);

	String zeroHashCodeStr = "f5a5a608";

	HashMap map = new HashMap();
	map.put(zeroHashCodeStr, "foo");

	InvocationHandler tempHandler = (InvocationHandler) Reflections.getFirstCtor(Gadgets.ANN_INV_HANDLER_CLASS).newInstance(
       Override.class, map);
	Reflections.setFieldValue(tempHandler, "type", Templates.class);
	Templates proxy = Gadgets.createProxy(tempHandler, Templates.class);

	LinkedHashSet set = new LinkedHashSet(); // maintain order
	set.add(templates);
	set.add(proxy);

	Reflections.setFieldValue(templates, "_auxClasses", null);
	Reflections.setFieldValue(templates, "_class", null);

	map.put(zeroHashCodeStr, templates); // swap in real object

	return set;
}
 

/**
 * Create an XMLFilter that uses the given source as the
 * transformation instructions. Uses
 * com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 */
public XMLFilter newXMLFilter(Source src)
    throws TransformerConfigurationException {
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    Templates templates = _xsltcFactory.newTemplates(src);
    if (templates == null ) return null;
    return newXMLFilter(templates);
}
 

/**
 * javax.xml.transform.sax.SAXTransformerFactory implementation.
 * Create an XMLFilter that uses the given source as the
 * transformation instructions.
 *
 * @param templates The source of the transformation instructions.
 * @return An XMLFilter object, or null if this feature is not supported.
 * @throws TransformerConfigurationException
 */
@Override
public XMLFilter newXMLFilter(Templates templates)
    throws TransformerConfigurationException
{
    try {
        return new com.sun.org.apache.xalan.internal.xsltc.trax.TrAXFilter(templates);
    }
    catch (TransformerConfigurationException e1) {
        if (_errorListener != null) {
            try {
                _errorListener.fatalError(e1);
                return null;
            }
            catch (TransformerException e2) {
                new TransformerConfigurationException(e2);
            }
        }
        throw e1;
    }
}
 

/**
 * Create a Templates object that from the input stylesheet
 * Uses the com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 * @param source the stylesheet.
 * @return A Templates object.
 */
public Templates newTemplates(Source source)
    throws TransformerConfigurationException
{
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    _currFactory = _xsltcFactory;
    return _currFactory.newTemplates(source);
}
 

/**
 * Create an XMLFilter that uses the given source as the
 * transformation instructions. Uses
 * com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 */
public XMLFilter newXMLFilter(Source src)
    throws TransformerConfigurationException {
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    Templates templates = _xsltcFactory.newTemplates(src);
    if (templates == null ) return null;
    return newXMLFilter(templates);
}
 

@OnScheduled
public void onScheduled(final ProcessContext context) {
    final ComponentLog logger = getLogger();
    final Integer cacheSize = context.getProperty(CACHE_SIZE).asInteger();
    final Long cacheTTL = context.getProperty(CACHE_TTL_AFTER_LAST_ACCESS).asTimePeriod(TimeUnit.SECONDS);

    if (cacheSize > 0) {
        CacheBuilder cacheBuilder = CacheBuilder.newBuilder().maximumSize(cacheSize);
        if (cacheTTL > 0) {
            cacheBuilder = cacheBuilder.expireAfterAccess(cacheTTL, TimeUnit.SECONDS);
        }

        cache = cacheBuilder.build(
           new CacheLoader<String, Templates>() {
               public Templates load(String path) throws TransformerConfigurationException {
                   return newTemplates(path);
               }
           });
    } else {
        cache = null;
        logger.warn("Stylesheet cache disabled because cache size is set to 0");
    }
}
 

/**
 * Load the {@link Templates} instance for the stylesheet at the configured location.
 */
private Templates loadTemplates() throws ApplicationContextException {
	Source stylesheetSource = getStylesheetSource();
	try {
		Templates templates = getTransformerFactory().newTemplates(stylesheetSource);
		return templates;
	}
	catch (TransformerConfigurationException ex) {
		throw new ApplicationContextException("Can't load stylesheet from '" + getUrl() + "'", ex);
	}
	finally {
		closeSourceIfNecessary(stylesheetSource);
	}
}
 

/**
 * javax.xml.transform.sax.TransformerFactory implementation.
 * Process the Source into a Templates object, which is a a compiled
 * representation of the source. Note that this method should not be
 * used with XSLTC, as the time-consuming compilation is done for each
 * and every transformation.
 *
 * @return A Templates object that can be used to create Transformers.
 * @throws TransformerConfigurationException
 */
@Override
public Transformer newTransformer(Source source) throws
    TransformerConfigurationException
{
    final Templates templates = newTemplates(source);
    final Transformer transformer = templates.newTransformer();
    if (_uriResolver != null) {
        transformer.setURIResolver(_uriResolver);
    }
    return(transformer);
}
 

public TrAXFilter(Templates templates)  throws
    TransformerConfigurationException
{
    _templates = templates;
    _transformer = (TransformerImpl) templates.newTransformer();
    _transformerHandler = new TransformerHandlerImpl(_transformer);
    _useServicesMechanism = _transformer.useServicesMechnism();
}
 

private static String xform(final String xml, final String xsl) throws Exception {
    final TransformerFactory tf = TransformerFactory.newInstance();
    final Source xslsrc = new StreamSource(new File(xsl));
    final Templates tmpl = tf.newTemplates(xslsrc);
    final Transformer t = tmpl.newTransformer();

    StringWriter writer = new StringWriter();
    final Source src = new StreamSource(new File(xml));
    final Result res = new StreamResult(writer);

    t.transform(src, res);
    return writer.toString();
}
 

/**
 * Get a TransformerHandler object that can process SAX ContentHandler
 * events based on a transformer specified by the stylesheet Source.
 * Uses com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 */
public TransformerHandler newTransformerHandler(Templates templates)
    throws TransformerConfigurationException
{
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    return _xsltcFactory.newTransformerHandler(templates);
}
 

/**
 * Get a TransformerHandler object that can process SAX ContentHandler
 * events based on a transformer specified by the stylesheet Source.
 * Uses com.sun.org.apache.xalan.internal.xsltc.trax.TransformerFactory.
 */
public TransformerHandler newTransformerHandler(Templates templates)
    throws TransformerConfigurationException
{
    if (_xsltcFactory == null) {
        createXSLTCTransformerFactory();
    }
    if (_errorlistener != null) {
        _xsltcFactory.setErrorListener(_errorlistener);
    }
    if (_uriresolver != null) {
        _xsltcFactory.setURIResolver(_uriresolver);
    }
    return _xsltcFactory.newTransformerHandler(templates);
}
 

@Test
public void testReuseTemplates() throws Exception {
    final TransformerFactory tf = TransformerFactory.newInstance();
    final Source xslsrc = new StreamSource(new StringReader(XSL));
    final Templates tmpl = tf.newTemplates(xslsrc);
    for (int i = 0; i < TRANSF_COUNT; i++) {
        checkResult(doTransformation(tmpl.newTransformer()));
    }
}
 

/**
 * javax.xml.transform.sax.TransformerFactory implementation.
 * Process the Source into a Templates object, which is a a compiled
 * representation of the source. Note that this method should not be
 * used with XSLTC, as the time-consuming compilation is done for each
 * and every transformation.
 *
 * @return A Templates object that can be used to create Transformers.
 * @throws TransformerConfigurationException
 */
@Override
public Transformer newTransformer(Source source) throws
    TransformerConfigurationException
{
    final Templates templates = newTemplates(source);
    final Transformer transformer = templates.newTransformer();
    if (_uriResolver != null) {
        transformer.setURIResolver(_uriResolver);
    }
    return(transformer);
}
 

private String testTransform(String xsl) throws Exception {
    //Prepare sources for transormation
    Source src = new StreamSource(new StringReader(xml));
    Source xslsrc = new StreamSource(new StringReader(xslPre + xsl + xslPost));
    //Create factory, template and transformer
    TransformerFactory tf = TransformerFactory.newInstance();
    Templates tmpl = tf.newTemplates(xslsrc);
    Transformer t = tmpl.newTransformer();
    //Prepare output stream
    StringWriter xmlResultString = new StringWriter();
    StreamResult xmlResultStream = new StreamResult(xmlResultString);
    //Transform
    t.transform(src, xmlResultStream);
    return xmlResultString.toString().trim();
}
 

@Test
public void testReuseTemplates() throws Exception {
    final TransformerFactory tf = TransformerFactory.newInstance();
    final Source xslsrc = new StreamSource(new StringReader(XSL));
    final Templates tmpl = tf.newTemplates(xslsrc);
    for (int i = 0; i < TRANSF_COUNT; i++) {
        checkResult(doTransformation(tmpl.newTransformer()));
    }
}