/** Check for required facilities. If not available, an exception will be thrown. */
public TemplatesPool(boolean templateCaching) throws Exception {
final TransformerFactory tFactory = TransformerFactory.newInstance();
final String processorClass = tFactory.getClass().getName();
/*
* Only report XSLT processor class once.
*/
if (!reportedProcessors.contains(processorClass)) {
logger.info("XSLT transformer factory: " + processorClass);
reportedProcessors.add(processorClass);
}
if (!tFactory.getFeature(SAXSource.FEATURE) || !tFactory.getFeature(SAXResult.FEATURE)) {
throw new Exception("Required source types not supported by the transformer factory.");
}
if (!tFactory.getFeature(SAXResult.FEATURE) || !tFactory.getFeature(StreamResult.FEATURE)) {
throw new Exception("Required result types not supported by the transformer factory.");
}
if (!(tFactory instanceof SAXTransformerFactory)) {
throw new Exception(
"TransformerFactory not an instance of SAXTransformerFactory: "
+ tFactory.getClass().getName());
}
this.tFactory = ((SAXTransformerFactory) tFactory);
this.tFactory.setErrorListener(new StylesheetErrorListener());
this.templateCaching = templateCaching;
}
public AssemblingParser(EntityResolver er, InputSource in) throws ConfigException {
this.er = er;
this.main = in;
factory = SAXParserFactory.newInstance();
factory.setNamespaceAware(true);
TransformerFactory tf = TransformerFactory.newInstance();
if (!tf.getFeature(SAXSource.FEATURE) || !tf.getFeature(SAXResult.FEATURE))
throw new ConfigException("XSLT not supported");
transfactory = (SAXTransformerFactory) tf;
}
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 an XMLFilter for each stylesheet.
XMLFilter xmlFilter1 = saxTFactory.newXMLFilter(new StreamSource("foo1.xsl"));
XMLFilter xmlFilter2 = saxTFactory.newXMLFilter(new StreamSource("foo2.xsl"));
XMLFilter xmlFilter3 = saxTFactory.newXMLFilter(new StreamSource("foo3.xsl"));
// Create an XMLReader.
XMLReader reader = XMLReaderFactory.createXMLReader();
// xmlFilter1 uses the XMLReader as its reader.
xmlFilter1.setParent(reader);
// xmlFilter2 uses xmlFilter1 as its reader.
xmlFilter2.setParent(xmlFilter1);
// xmlFilter3 uses xmlFilter2 as its reader.
xmlFilter3.setParent(xmlFilter2);
// xmlFilter3 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);
xmlFilter3.setContentHandler(serializer.asContentHandler());
// Perform the series of transformations as follows:
// - transformer3 gets its parent (transformer2) as the XMLReader/XMLFilter
// and calls transformer2.parse(new InputSource("foo.xml")).
// - transformer2 gets its parent (transformer1) as the XMLReader/XMLFilter
// and calls transformer1.parse(new InputSource("foo.xml")).
// - transformer1 gets its parent (reader, a SAXParser) as the XMLReader
// and calls reader.parse(new InputSource("foo.xml")).
// - reader parses the XML document and sends the SAX parse events to transformer1,
// which performs transformation 1 and sends the output to transformer2.
// - transformer2 parses the transformation 1 output, performs transformation 2, and
// sends the output to transformer3.
// - transformer3 parses the transformation 2 output, performs transformation 3,
// and sends the output to the serializer.
xmlFilter3.parse(new InputSource("foo.xml"));
}
}
protected void setHandler(Result result, Source stylesheet) throws MarcException {
try {
TransformerFactory factory = TransformerFactory.newInstance();
if (!factory.getFeature(SAXTransformerFactory.FEATURE))
throw new UnsupportedOperationException("SAXTransformerFactory is not supported");
SAXTransformerFactory saxFactory = (SAXTransformerFactory) factory;
if (stylesheet == null) handler = saxFactory.newTransformerHandler();
else handler = saxFactory.newTransformerHandler(stylesheet);
handler.getTransformer().setOutputProperty(OutputKeys.METHOD, "xml");
handler.setResult(result);
} catch (Exception e) {
throw new MarcException(e.getMessage(), e);
}
}
@Override
public int doEndTag() throws JspException {
try {
// set up our DocumentBuilder
if (dbf == null) {
dbf = DocumentBuilderFactory.newInstance();
dbf.setNamespaceAware(true);
dbf.setValidating(false);
}
db = dbf.newDocumentBuilder();
// if we've gotten a filter, set up a transformer to support it
if (filter != null) {
if (tf == null) {
tf = TransformerFactory.newInstance();
}
if (!tf.getFeature(SAXTransformerFactory.FEATURE)) {
throw new JspTagException(Resources.getMessage("PARSE_NO_SAXTRANSFORMER"));
}
SAXTransformerFactory stf = (SAXTransformerFactory) tf;
th = stf.newTransformerHandler();
}
// produce a Document by parsing whatever the attributes tell us to use
Document d;
Object xmlText = this.xml;
if (xmlText == null) {
// if the attribute was specified, use the body as 'xml'
if (bodyContent != null && bodyContent.getString() != null) {
xmlText = bodyContent.getString().trim();
} else {
xmlText = "";
}
}
if (xmlText instanceof String) {
d = parseStringWithFilter((String) xmlText, filter);
} else if (xmlText instanceof Reader) {
d = parseReaderWithFilter((Reader) xmlText, filter);
} else {
throw new JspTagException(Resources.getMessage("PARSE_INVALID_SOURCE"));
}
// we've got a Document object; store it out as appropriate
// (let any exclusivity or other constraints be enforced by TEI/TLV)
if (var != null) {
pageContext.setAttribute(var, d, scope);
}
if (varDom != null) {
pageContext.setAttribute(varDom, d, scopeDom);
}
return EVAL_PAGE;
} catch (SAXException ex) {
throw new JspException(ex);
} catch (IOException ex) {
throw new JspException(ex);
} catch (ParserConfigurationException ex) {
throw new JspException(ex);
} catch (TransformerConfigurationException ex) {
throw new JspException(ex);
}
}
public int process() throws TransformerException, IOException, SAXException {
ZipInputStream zis = new ZipInputStream(input);
final ZipOutputStream zos = new ZipOutputStream(output);
final OutputStreamWriter osw = new OutputStreamWriter(zos);
Thread.currentThread().setContextClassLoader(getClass().getClassLoader());
TransformerFactory tf = TransformerFactory.newInstance();
if (!tf.getFeature(SAXSource.FEATURE) || !tf.getFeature(SAXResult.FEATURE)) {
return 0;
}
SAXTransformerFactory saxtf = (SAXTransformerFactory) tf;
Templates templates = null;
if (xslt != null) {
templates = saxtf.newTemplates(xslt);
}
// configuring outHandlerFactory
// ///////////////////////////////////////////////////////
EntryElement entryElement = getEntryElement(zos);
ContentHandler outDocHandler = null;
switch (outRepresentation) {
case BYTECODE:
outDocHandler =
new OutputSlicingHandler(new ASMContentHandlerFactory(zos), entryElement, false);
break;
case MULTI_XML:
outDocHandler =
new OutputSlicingHandler(new SAXWriterFactory(osw, true), entryElement, true);
break;
case SINGLE_XML:
ZipEntry outputEntry = new ZipEntry(SINGLE_XML_NAME);
zos.putNextEntry(outputEntry);
outDocHandler = new SAXWriter(osw, false);
break;
}
// configuring inputDocHandlerFactory
// /////////////////////////////////////////////////
ContentHandler inDocHandler;
if (templates == null) {
inDocHandler = outDocHandler;
} else {
inDocHandler =
new InputSlicingHandler(
"class",
outDocHandler,
new TransformerHandlerFactory(saxtf, templates, outDocHandler));
}
ContentHandlerFactory inDocHandlerFactory = new SubdocumentHandlerFactory(inDocHandler);
if (inDocHandler != null && inRepresentation != SINGLE_XML) {
inDocHandler.startDocument();
inDocHandler.startElement("", "classes", "classes", new AttributesImpl());
}
int i = 0;
ZipEntry ze;
while ((ze = zis.getNextEntry()) != null) {
update(ze.getName(), n++);
if (isClassEntry(ze)) {
processEntry(zis, ze, inDocHandlerFactory);
} else {
OutputStream os = entryElement.openEntry(getName(ze));
copyEntry(zis, os);
entryElement.closeEntry();
}
i++;
}
if (inDocHandler != null && inRepresentation != SINGLE_XML) {
inDocHandler.endElement("", "classes", "classes");
inDocHandler.endDocument();
}
if (outRepresentation == SINGLE_XML) {
zos.closeEntry();
}
zos.flush();
zos.close();
return i;
}
