Examples of org.xml.sax.ContentHandler

org.xml.sax.ContentHandler
axproject.org'>http://www.saxproject.org for further information.
This is the main interface that most SAX applications implement: if the application needs to be informed of basic parsing events, it implements this interface and registers an instance with the SAX parser using the {@link org.xml.sax.XMLReader#setContentHandler setContentHandler} method. The parser uses the instance to report basic document-related events like the start and end of elements and character data.

The order of events in this interface is very important, and mirrors the order of information in the document itself. For example, all of an element's content (character data, processing instructions, and/or subelements) will appear, in order, between the startElement event and the corresponding endElement event.

This interface is similar to the now-deprecated SAX 1.0 DocumentHandler interface, but it adds support for Namespaces and for reporting skipped entities (in non-validating XML processors).

Implementors should note that there is also a ContentHandler class in the java.net package; that means that it's probably a bad idea to do
```
import java.net.*; import org.xml.sax.*; 
```
In fact, "import ...*" is usually a sign of sloppy programming anyway, so the user should consider this a feature rather than a bug.
@since SAX 2.0 @author David Megginson @version 2.0.1+ (sax2r3pre1) @see org.xml.sax.XMLReader @see org.xml.sax.DTDHandler @see org.xml.sax.ErrorHandler

        InputStream input = ExcelParserTest.class.getResourceAsStream(
                "/test-documents/testEXCEL.xls");
        try {
            Metadata metadata = new Metadata();
            StringWriter writer = new StringWriter();
            ContentHandler handler = new WriteOutContentHandler(writer);
            new ExcelParser().parse(input, handler, metadata);


            assertEquals(
                    "application/vnd.ms-excel",
                    metadata.get(Metadata.CONTENT_TYPE));

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        InputStream input = WordParserTest.class.getResourceAsStream(
                "/test-documents/testWORD.doc");
        try {
            Metadata metadata = new Metadata();
            StringWriter writer = new StringWriter();
            ContentHandler handler = new WriteOutContentHandler(writer);
            new WordParser().parse(input, handler, metadata);


            assertEquals(
                    "application/msword",
                    metadata.get(Metadata.CONTENT_TYPE));

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        InputStream input = PowerPointParserTest.class.getResourceAsStream(
                "/test-documents/testPPT.ppt");
        try {
            Metadata metadata = new Metadata();
            StringWriter writer = new StringWriter();
            ContentHandler handler = new WriteOutContentHandler(writer);
            new PowerPointParser().parse(input, handler, metadata);


            assertEquals(
                    "application/vnd.ms-powerpoint",
                    metadata.get(Metadata.CONTENT_TYPE));

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        new File("build/test-files").mkdirs();
        File obrFile = new File("build/test-files/obr-sources.xml");
        FileOutputStream out = new FileOutputStream(obrFile);
        try {
            ContentHandler hanlder = OBRXMLWriter.newHandler(out, "UTF-8", true);
            OBRXMLWriter.writeBundles(bundles, hanlder);
        } finally {
            out.close();
        }

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            out = new FileOutputStream(file);
        } catch (FileNotFoundException e) {
            throw new BuildException(file + " was not found", e);
        }


        ContentHandler hd;
        try {
            hd = OBRXMLWriter.newHandler(out, encoding, indent);
        } catch (TransformerConfigurationException e) {
            throw new BuildException("Sax configuration error: " + e.getMessage(), e);
        }

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            // JAXB
            marshaller.setListener(new AtomMarshallingListener(handler));
            // perform the marshaling so that our marshaler (xml serializer)
            // will receive all the
            // SAX events
            ContentHandler xmlSerializer = handler.asContentHandler();
            marshaller.marshal(jaxbObject, xmlSerializer);
        } catch (JAXBException e) {
            throw new RestException("failed to marshal object (" + jaxbObject.getClass().getName()
                + ")", e);
        }

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   * @throws CoreException
   */
  public static void serialize(DotCorpus dotCorpus, OutputStream out) throws CoreException {


    XMLSerializer xmlSerializer = new XMLSerializer(out, true);
    ContentHandler xmlSerHandler = xmlSerializer.getContentHandler();


    try {
      xmlSerHandler.startDocument();
      xmlSerHandler.startElement("", CONFIG_ELEMENT, CONFIG_ELEMENT, new AttributesImpl());


      for (String corpusFolder : dotCorpus.getCorpusFolderNameList()) {
        AttributesImpl corpusFolderAttributes = new AttributesImpl();
        corpusFolderAttributes.addAttribute("", "",CORPUS_FOLDER_ATTRIBUTE, "", corpusFolder);


        xmlSerHandler.startElement("", CORPUS_ELEMENT, CORPUS_ELEMENT, corpusFolderAttributes);
        xmlSerHandler.endElement("", CORPUS_ELEMENT, CORPUS_ELEMENT);
      }


      for (AnnotationStyle style : dotCorpus.getAnnotationStyles()) {
        AttributesImpl styleAttributes = new AttributesImpl();
        styleAttributes
                .addAttribute("", "", STYLE_TYPE_ATTRIBUTE, "", style.getAnnotation());
        styleAttributes.addAttribute("", "", STYLE_STYLE_ATTRIBUTE, "", style.getStyle()
                .name());


        Color color = style.getColor();
        Integer colorInt = new Color(color.getRed(), color.getGreen(), color.getBlue()).getRGB();
        styleAttributes.addAttribute("", "", STYLE_COLOR_ATTRIBUTE, "", colorInt.toString());
        styleAttributes.addAttribute("", "", STYLE_LAYER_ATTRIBUTE, "",
                Integer.toString(style.getLayer()));


        xmlSerHandler.startElement("", STYLE_ELEMENT, STYLE_ELEMENT, styleAttributes);
        xmlSerHandler.endElement("", STYLE_ELEMENT, STYLE_ELEMENT);
      }


      if (dotCorpus.getTypeSystemFileName() != null) {
        AttributesImpl typeSystemFileAttributes = new AttributesImpl();
        typeSystemFileAttributes.addAttribute("", "", TYPESYTEM_FILE_ATTRIBUTE, "", dotCorpus
                .getTypeSystemFileName());


        xmlSerHandler.startElement("", TYPESYSTEM_ELEMENT, TYPESYSTEM_ELEMENT, typeSystemFileAttributes);
        xmlSerHandler.endElement("", TYPESYSTEM_ELEMENT, TYPESYSTEM_ELEMENT);
      }


      for (String folder : dotCorpus.getCasProcessorFolderNames()) {
        AttributesImpl taggerConfigAttributes = new AttributesImpl();
        taggerConfigAttributes.addAttribute("", "", CAS_PROCESSOR_FOLDER_ATTRIBUTE, "", folder);


        xmlSerHandler.startElement("", CAS_PROCESSOR_ELEMENT, CAS_PROCESSOR_ELEMENT, taggerConfigAttributes);
        xmlSerHandler.endElement("", CAS_PROCESSOR_ELEMENT, CAS_PROCESSOR_ELEMENT);
      }


      if (dotCorpus.getEditorLineLengthHint() != DotCorpus.EDITOR_LINE_LENGTH_HINT_DEFAULT) {
        AttributesImpl editorLineLengthHintAttributes = new AttributesImpl();
        editorLineLengthHintAttributes.addAttribute("", "", EDITOR_LINE_LENGTH_ATTRIBUTE, "",
                Integer.toString(dotCorpus.getEditorLineLengthHint()));


        xmlSerHandler.startElement("", EDITOR_ELEMENT, EDITOR_ELEMENT, editorLineLengthHintAttributes);
        xmlSerHandler.endElement("", EDITOR_ELEMENT, EDITOR_ELEMENT);
      }


      xmlSerHandler.endElement("", CONFIG_ELEMENT, CONFIG_ELEMENT);
      xmlSerHandler.endDocument();
    } catch (SAXException e) {
      String message = (e.getMessage() != null ? e.getMessage() : "");


      IStatus s = new Status(IStatus.ERROR, CasEditorPlugin.ID, IStatus.OK, message, e);
      throw new CoreException(s);

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                throw new SAXException(e);
            }


            ContentHandlerFactory chFactory = foNode.getContentHandlerFactory();
            if (chFactory != null) {
                ContentHandler subHandler = chFactory.createContentHandler();
                if (subHandler instanceof ObjectSource 
                        && foNode instanceof ObjectBuiltListener) {
                    ((ObjectSource) subHandler).setObjectBuiltListener(
                            (ObjectBuiltListener) foNode);
                }
                
                subHandler.startDocument();
                subHandler.startElement(namespaceURI, localName, 
                        rawName, attlist);
                depth = 1;
                delegate = subHandler;
            }

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    public void testBasicScript() throws Exception
    {
        MockControl control = newControl(ContentHandler.class);
        control.setDefaultMatcher(new SAXEqualsMatcher());


        ContentHandler mock = (ContentHandler) control.getMock();


        mock.setDocumentLocator(HiveMindBuilder.GROOVY_LOCATOR);


        AttributesImpl attrs = new AttributesImpl();


        attrs.addAttribute("", "id", "id", "", "basic");
        attrs.addAttribute("", "version", "version", "", "1.0.0");


        mock.startElement("", "module", "module", attrs);
        mock.endElement("", "module", "module");


        replayControls();


        Script script = new GroovyShell().parse("processor.module(id:'basic', version:'1.0.0')");

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          String encoding = format.getProperty(OutputKeys.ENCODING);          
          xoh = new ToXMLSAXHandler(handler, (LexicalHandler)handler, encoding);
      }
      else if (outputTarget instanceof SAXResult)
      {
        ContentHandler handler = ((SAXResult) outputTarget).getHandler();
        
        if (null == handler)
           throw new IllegalArgumentException(
             "handler can not be null for a SAXResult");

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