/**
* Parse an XML Catalog stream.
*
* @param catalog The catalog to which this catalog file belongs
* @param is The input stream from which the catalog will be read
* @throws MalformedURLException Improper fileUrl
* @throws IOException Error reading catalog file
* @throws CatalogException A Catalog exception
*/
public void readCatalog(Catalog catalog, InputStream is) throws IOException, CatalogException {
// Create an instance of the parser
if (parserFactory == null && parserClass == null) {
debug.message(1, "Cannot read SAX catalog without a parser");
throw new CatalogException(CatalogException.UNPARSEABLE);
}
debug = catalog.getCatalogManager().debug;
EntityResolver bResolver = catalog.getCatalogManager().getBootstrapResolver();
this.catalog = catalog;
try {
if (parserFactory != null) {
SAXParser parser = parserFactory.newSAXParser();
SAXParserHandler spHandler = new SAXParserHandler();
spHandler.setContentHandler(this);
if (bResolver != null) {
spHandler.setEntityResolver(bResolver);
}
parser.parse(new InputSource(is), spHandler);
} else {
Parser parser =
(Parser)
Class.forName(
parserClass,
true,
loader != null ? loader : this.getClass().getClassLoader())
.newInstance();
parser.setDocumentHandler(this);
if (bResolver != null) {
parser.setEntityResolver(bResolver);
}
parser.parse(new InputSource(is));
}
} catch (ClassNotFoundException cnfe) {
throw new CatalogException(CatalogException.UNPARSEABLE);
} catch (IllegalAccessException iae) {
throw new CatalogException(CatalogException.UNPARSEABLE);
} catch (InstantiationException ie) {
throw new CatalogException(CatalogException.UNPARSEABLE);
} catch (ParserConfigurationException pce) {
throw new CatalogException(CatalogException.UNKNOWN_FORMAT);
} catch (SAXException se) {
Exception e = se.getException();
// FIXME: there must be a better way
UnknownHostException uhe = new UnknownHostException();
FileNotFoundException fnfe = new FileNotFoundException();
if (e != null) {
if (e.getClass() == uhe.getClass()) {
throw new CatalogException(CatalogException.PARSE_FAILED, e.toString());
} else if (e.getClass() == fnfe.getClass()) {
throw new CatalogException(CatalogException.PARSE_FAILED, e.toString());
}
}
throw new CatalogException(se);
}
}
public void parse() throws IOException, SAXException, ParserConfigurationException {
// parser stuff figured out with great ease thanks to java examples in a nutshell By David
// Flanagan
// http://www.oreilly.com/catalog/jenut2/chapter/ch19.html
// Create a JAXP "parser factory" for creating SAX parsers
SAXParserFactory spf = SAXParserFactory.newInstance();
// Configure the parser factory for the type of parsers we require
spf.setValidating(false); // No validation required
// Now use the parser factory to create a SAXParser object
// Note that SAXParser is a JAXP class, not a SAX class
javax.xml.parsers.SAXParser sp = spf.newSAXParser();
// Create a SAX input source for the file argument
org.xml.sax.InputSource input = new InputSource(new FileReader(this.xmlFileLocation));
// Give the InputSource an absolute URL for the file, so that
// it can resolve relative URLs in a <!DOCTYPE> declaration, e.g.
input.setSystemId("file://" + new File(this.xmlFileLocation).getAbsolutePath());
// Finally, tell the parser to parse the input and notify the handler
// sp.parse(input, this);
// Instead of using the SAXParser.parse() method, which is part of the
// JAXP API, we could also use the SAX1 API directly. Note the
// difference between the JAXP class javax.xml.parsers.SAXParser and
// the SAX1 class org.xml.sax.Parser
//
org.xml.sax.Parser parser = sp.getParser(); // Get the SAX parser
if (this.resolveEntities) {
parser.setEntityResolver(this);
} else {
parser.setEntityResolver(new SAXFakeEntityResolver());
}
parser.setDocumentHandler(this); // Set main handler
parser.setErrorHandler(errorHandler); // Set error handler
parser.parse(input); // Parse!
}
/**
* Parse the content given {@link org.xml.sax.InputSource} as XML using the specified {@link
* org.xml.sax.HandlerBase}. <i> Use of the DefaultHandler version of this method is recommended
* as the HandlerBase class has been deprecated in SAX 2.0</i>
*
* @param is The InputSource containing the content to be parsed.
* @param hb The SAX HandlerBase to use.
* @throws IllegalArgumentException If the <code>InputSource</code> object is <code>null</code>.
* @throws IOException If any IO errors occur.
* @throws SAXException If any SAX errors occur during processing.
* @see org.xml.sax.DocumentHandler
*/
public void parse(InputSource is, HandlerBase hb) throws SAXException, IOException {
if (is == null) {
throw new IllegalArgumentException("InputSource cannot be null");
}
Parser parser = this.getParser();
if (hb != null) {
parser.setDocumentHandler(hb);
parser.setEntityResolver(hb);
parser.setErrorHandler(hb);
parser.setDTDHandler(hb);
}
parser.parse(is);
}
public void parse(InputSource paramInputSource, HandlerBase paramHandlerBase)
throws SAXException, IOException {
if (paramInputSource == null) {
throw new IllegalArgumentException("InputSource cannot be null");
}
Parser localParser = getParser();
if (paramHandlerBase != null) {
localParser.setDocumentHandler(paramHandlerBase);
localParser.setEntityResolver(paramHandlerBase);
localParser.setErrorHandler(paramHandlerBase);
localParser.setDTDHandler(paramHandlerBase);
}
localParser.parse(paramInputSource);
}
public void setEntityResolver(EntityResolver resolver) {
_parser.setEntityResolver(resolver);
}
