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

        try {
            tHandler = this.tfactory.newTransformerHandler();
        } catch (TransformerConfigurationException e) {
            logger.error("Unable to create new transformer handler.", e);
        }
        final ContentHandler ch;
        if ( this.needsNamespacesAsAttributes ) {
            final NamespaceAsAttributes nsPipeline = new NamespaceAsAttributes(tHandler, this.logger);
            ch = nsPipeline;
        } else {
            ch = tHandler;

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        final ProcessingComponentConfiguration serializerConfig = config.getSerializerConfiguration();
        this.serializer = this.getPipelineComponent(Serializer.class, serializerConfig.getType(), false);
        LOGGER.debug("Using serializer type {}: {}.", serializerConfig.getType(), serializer);
        serializer.init(processingContext, serializerConfig);


        ContentHandler pipelineComponent = serializer;
        // now chain pipeline
        for(int i=index; i>0; i--) {
            transformers[i-1].setContentHandler(pipelineComponent);
            pipelineComponent = transformers[i-1];
        }

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        InputSource sheetSource = new InputSource(sheetInputStream);
        SAXParserFactory saxFactory = SAXParserFactory.newInstance();
        SAXParser saxParser = saxFactory.newSAXParser();
        XMLReader sheetParser = saxParser.getXMLReader();
        ContentHandler handler = new MyXSSFSheetHandler(styles, strings, this.minColumns, this.output);
        sheetParser.setContentHandler(handler);
        sheetParser.parse(sheetSource);
    }

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            public void parse(InputSource input) throws IOException, SAXException {
                parse();
            }
            
            private void parse() throws SAXException {
                ContentHandler handler = getContentHandler();
                // <root xmlns='http://springframework.org'><string>Foo</string></root>
                handler.startDocument();
                handler.startPrefixMapping("", "http://springframework.org");
                handler.startElement("http://springframework.org", "root", "root", new AttributesImpl());
                handler.startElement("http://springframework.org", "string", "string", new AttributesImpl());
                handler.characters("Foo".toCharArray(), 0, 3);
                handler.endElement("http://springframework.org", "string", "string");
                handler.endElement("http://springframework.org", "root", "root");
                handler.endPrefixMapping("");
                handler.endDocument();
            }
        };
        final SAXSource source = new SAXSource(xmlReader, new InputSource());
        
        // Create a mock WebServiceMessage that returns the SAXSource as payload source.

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     * @see #createContentHandler()
     * @see #getResponse(org.xml.sax.ContentHandler)
     */
    @Override
    public final Source invoke(Source request) throws Exception {
        ContentHandler contentHandler = null;
        if (request != null) {
            contentHandler = createContentHandler();
            SAXResult result = new SAXResult(contentHandler);
            transform(request, result);
        }

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            final String localization)
    throws SCRDescriptorException {
        final String namespace = detectMetatypeVersion(metaData);


        try {
            final ContentHandler contentHandler = IOUtils.getSerializer(file);


            contentHandler.startDocument();
            contentHandler.startPrefixMapping(PREFIX, namespace);


            final AttributesImpl ai = new AttributesImpl();
            IOUtils.addAttribute(ai, "localization", localization);


            contentHandler.startElement(namespace, METADATA_ELEMENT, METADATA_ELEMENT_QNAME, ai);
            IOUtils.newline(contentHandler);


            for(final ComponentContainer comp : components) {
                if ( comp.getMetatypeContainer() != null ) {
                    generateOCDXML(comp.getMetatypeContainer(), contentHandler);
                    generateDesignateXML(comp.getMetatypeContainer(), contentHandler);
                }
            }


            // end wrapper element
            contentHandler.endElement(namespace, METADATA_ELEMENT, METADATA_ELEMENT_QNAME);
            IOUtils.newline(contentHandler);
            contentHandler.endPrefixMapping(PREFIX);
            contentHandler.endDocument();
        } catch (final IOException e) {
            throw new SCRDescriptorException("Unable to generate xml", file.toString(), e);
        } catch (final TransformerException e) {
            throw new SCRDescriptorException("Unable to generate xml", file.toString(), e);
        } catch (final SAXException e) {

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            final List<ComponentContainer> components,
            final File descriptorFile,
            final Log logger) throws SAXException, IOException, TransformerException {
        logger.info("Writing " + components.size() + " Service Component Descriptors to "
                + descriptorFile);
        final ContentHandler contentHandler = IOUtils.getSerializer(descriptorFile);
        // detect namespace to use
        final String namespace = module.getOptions().getSpecVersion().getNamespaceUrl();


        contentHandler.startDocument();
        contentHandler.startPrefixMapping(PREFIX, namespace);


        // wrapper element to generate well formed xml
        contentHandler.startElement("", ComponentDescriptorIO.COMPONENTS, ComponentDescriptorIO.COMPONENTS, new AttributesImpl());
        IOUtils.newline(contentHandler);


        for (final ComponentContainer component : components) {
            generateXML(namespace, module, component, contentHandler);
        }


        // end wrapper element
        contentHandler.endElement("", ComponentDescriptorIO.COMPONENTS, ComponentDescriptorIO.COMPONENTS);
        IOUtils.newline(contentHandler);
        contentHandler.endPrefixMapping(PREFIX);
        contentHandler.endDocument();
    }

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     * 'org.springmodules.jcr.JcrTemplate.getImportContentHandler(String, int)'
     */
    public void testGetImportContentHandler() throws RepositoryException {
        String path = "path";
        MockControl resultMock = MockControl.createControl(ContentHandler.class);
        ContentHandler result = (ContentHandler) resultMock.getMock();
        
        sessionControl.expectAndReturn(session.getImportContentHandler(path, 0), result);
        sessionControl.replay();
        sfControl.replay();

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    private String extractTextWithTika(byte[] textBytes, Metadata metadata) throws TikaException, SAXException, IOException {
        AutoDetectParser parser = new AutoDetectParser(new MimeTypes());
        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        OutputStreamWriter writer = new OutputStreamWriter(baos, "UTF-8");
        ContentHandler handler = new BodyContentHandler(writer);
        ParseContext context = new ParseContext();
        context.set(PDFParserConfig.class, new LumifyParserConfig());
        parser.parse(new ByteArrayInputStream(textBytes), handler, metadata, context);
        return IOUtils.toString(baos.toByteArray(), "UTF-8");
    }

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  @Test
  public void testTika() throws Exception {
    //<start id="tika"/>
    InputStream input = new FileInputStream(
            new File("src/test/resources/pdfBox-sample.pdf"));//<co id="tika.is"/>
    ContentHandler textHandler = new BodyContentHandler();//<co id="tika.handler"/>
    Metadata metadata = new Metadata();//<co id="tika.metadata"/>
    Parser parser = new AutoDetectParser();//<co id="tika.parser"/>
    ParseContext context = new ParseContext();
    parser.parse(input, textHandler, metadata, context);//<co id="tika.parse"/>
    System.out.println("Title: " + metadata.get(Metadata.TITLE));//<co id="tika.title"/>
    System.out.println("Body: " + textHandler.toString());//<co id="tika.body"/>
    /*
<calloutlist>
    <callout arearefs="tika.is"><para>Create the <classname>InputStream</classname> to read in the content</para></callout>
    <callout arearefs="tika.handler"><para>The <classname>BodyContentHandler</classname> is a Tika-provided <classname>ContentHandler</classname> that extracts just the "body" of the InputStream</para></callout>
  <callout arearefs="tika.metadata"><para>The <classname>Metadata</classname> object will hold metadata like author, title, etc. about the content in a map.</para></callout>

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