Examples of org.xml.sax.XMLReader

org.xml.sax.XMLReader
axproject.org'>http://www.saxproject.org for further information.
Note: despite its name, this interface does not extend the standard Java {@link java.io.Reader Reader} interface, because reading XML is a fundamentally different activity than reading character data.

XMLReader is the interface that an XML parser's SAX2 driver must implement. This interface allows an application to set and query features and properties in the parser, to register event handlers for document processing, and to initiate a document parse.

All SAX interfaces are assumed to be synchronous: the {@link #parse parse} methods must not return until parsingis complete, and readers must wait for an event-handler callback to return before reporting the next event.

This interface replaces the (now deprecated) SAX 1.0 {@link org.xml.sax.Parser Parser} interface. The XMLReader interfacecontains two important enhancements over the old Parser interface (as well as some minor ones):
1. it adds a standard way to query and set features and properties; and
2. it adds Namespace support, which is required for many higher-level XML standards.
There are adapters available to convert a SAX1 Parser to a SAX2 XMLReader and vice-versa.
@since SAX 2.0 @author David Megginson @version 2.0.1+ (sax2r3pre1) @see org.xml.sax.XMLFilter @see org.xml.sax.helpers.ParserAdapter @see org.xml.sax.helpers.XMLReaderAdapter

    public void build(String systemId) throws SAXException {
  try {
      // Create an XMLReader (SAX parser) for processing the input
      final SAXParserFactory factory = SAXParserFactory.newInstance();
      final SAXParser parser = factory.newSAXParser();
      final XMLReader reader = parser.getXMLReader();


      build(reader, systemId);
  }
  catch (ParserConfigurationException e) {
      throw new SAXException(e);

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        _transformer = new TransformerHandlerImpl( 
    (TransformerImpl) templates.newTransformer());
    }


    private void createParent() throws SAXException {
  XMLReader parent = null;
        try {
            SAXParserFactory pfactory = SAXParserFactory.newInstance();
            pfactory.setNamespaceAware(true);
            SAXParser saxparser = pfactory.newSAXParser();
            parent = saxparser.getXMLReader();

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        Source src = null;
        if (entityResolver != null) {
            if (getFactory().getFeature(SAXSource.FEATURE)) {
                SAXParserFactory spFactory = SAXParserFactory.newInstance();
                spFactory.setNamespaceAware(true);
                XMLReader reader = spFactory.newSAXParser().getXMLReader();
                reader.setEntityResolver(entityResolver);
                src = new SAXSource(reader, new InputSource(is));
            } else {
                throw new IllegalStateException("xcatalog specified, but "
                    + "parser doesn't support SAX");
            }

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        Source src = null;
        if (entityResolver != null) {
            if (getFactory().getFeature(SAXSource.FEATURE)) {
                SAXParserFactory spFactory = SAXParserFactory.newInstance();
                spFactory.setNamespaceAware(true);
                XMLReader reader = spFactory.newSAXParser().getXMLReader();
                reader.setEntityResolver(entityResolver);
                src = new SAXSource(reader, new InputSource(is));
            } else {
                throw new IllegalStateException("xcatalog specified, but "
                    + "parser doesn't support SAX");
            }

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                    true);
        }


        // Configure the parser
        SAXParser saxParser = factory.newSAXParser();
        XMLReader xmlReader = saxParser.getXMLReader();
        xmlReader.setProperty(LEXICAL_HANDLER_PROPERTY, jspDocParser);
        xmlReader.setErrorHandler(jspDocParser);


        return saxParser;
    }

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        try {
            /**
             * SAX 2 style parser used to parse the given file.
             */
            XMLReader parser = JAXPUtils.getNamespaceXMLReader();


            String uri = null;
            if (buildFile != null) {
                uri = FILE_UTILS.toURI(buildFile.getAbsolutePath());
                inputStream = new FileInputStream(buildFile);
            } else {
                uri = url.toString();
                int pling = -1;
                if (uri.startsWith("jar:file")
                    && (pling = uri.indexOf("!/")) > -1) {
                    zf = new ZipFile(org.apache.tools.ant.launch.Locator
                                     .fromJarURI(uri), "UTF-8");
                    inputStream =
                        zf.getInputStream(zf.getEntry(uri.substring(pling + 1)));
                } else {
                    inputStream = url.openStream();
                }
            }


            inputSource = new InputSource(inputStream);
            if (uri != null) {
                inputSource.setSystemId(uri);
            }
            project.log("parsing buildfile " + buildFileName + " with URI = "
                        + uri + (zf != null ? " from a zip file" : ""),
                        Project.MSG_VERBOSE);


            DefaultHandler hb = handler;


            parser.setContentHandler(hb);
            parser.setEntityResolver(hb);
            parser.setErrorHandler(hb);
            parser.setDTDHandler(hb);
            parser.parse(inputSource);
        } catch (SAXParseException exc) {
            Location location = new Location(exc.getSystemId(), exc.getLineNumber(), exc
                                             .getColumnNumber());


            Throwable t = exc.getException();

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      fslist.add(fs);
    }


    private void fetchList(String path, boolean recur) throws IOException {
      try {
        XMLReader xr = XMLReaderFactory.createXMLReader();
        xr.setContentHandler(this);
        final URL url = new URI("http", null, fshostname, fsport,
            "/listPaths" + path, "ugi=" + ugi + (recur? "&recursive=yes" : ""),
            null).toURL();
        HttpURLConnection connection = (HttpURLConnection)url.openConnection();
        connection.setRequestMethod("GET");
        connection.connect();


        InputStream resp = connection.getInputStream();
        xr.parse(new InputSource(resp));
      } catch (SAXException e) { 
        IOException ie = new IOException("invalid xml directory content");
        ie.initCause(e);
        throw ie;
      } catch (URISyntaxException e) {

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    // TOOD: Need UtilityClassLoader here? I don't think we do; this works
    // with XML4J v3. This is a good thing, since the UtilityClassLoader writes
    // to the logger, which isn't created yet!
    SAXParserFactory factory = SAXParserFactory.newInstance();
    SAXParser parser = factory.newSAXParser();
    XMLReader reader = parser.getXMLReader();


    reader.setContentHandler(handler);
    reader.setErrorHandler(handler);
    reader
            .parse(new InputSource(UIMAFramework_impl.class
                    .getResourceAsStream("factoryConfig.xml")));
  }

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   * format.  Returns false if problems are found, true otherwise.
   */
  private boolean checkIvyXmlFile(File ivyXmlFile)
      throws ParserConfigurationException, SAXException, IOException {
    log("Scanning: " + ivyXmlFile.getPath(), verboseLevel);
    XMLReader xmlReader = XMLReaderFactory.createXMLReader();
    DependencyRevChecker revChecker = new DependencyRevChecker(ivyXmlFile); 
    xmlReader.setContentHandler(revChecker);
    xmlReader.setErrorHandler(revChecker);
    // To work around a bug in XERCES (XERCESJ-1257), we assume the XML is always UTF8, so we simply provide reader.
    CharsetDecoder decoder = Charset.forName("UTF-8").newDecoder()
        .onMalformedInput(CodingErrorAction.REPORT)
        .onUnmappableCharacter(CodingErrorAction.REPORT);
    InputStream stream = new FileInputStream(ivyXmlFile);
    xmlReader.parse(new InputSource(new BufferedReader(new InputStreamReader(stream, decoder))));
    return ! revChecker.fail;
  }

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   *           if an I/O failure occurs
   */
  public static void deserialize(InputStream aStream, CAS aCAS, boolean aLenient,
          XmiSerializationSharedData aSharedData, int aMergePoint)
          throws SAXException, IOException {
    XMLReader xmlReader = XMLReaderFactory.createXMLReader();
    XmiCasDeserializer deser = new XmiCasDeserializer(aCAS.getTypeSystem());
    ContentHandler handler = deser.getXmiCasHandler(aCAS, aLenient, aSharedData, aMergePoint);
    xmlReader.setContentHandler(handler);
    xmlReader.parse(new InputSource(aStream));
  }

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