Examples of org.xml.sax.DocumentHandler

org.xml.sax.DocumentHandler
axproject.org'>http://www.saxproject.org for further information.
This was the main event-handling interface for SAX1; in SAX2, it has been replaced by {@link org.xml.sax.ContentHandler ContentHandler}, which provides Namespace support and reporting of skipped entities. This interface is included in SAX2 only to support legacy SAX1 applications.

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.

Application writers who do not want to implement the entire interface can derive a class from HandlerBase, which implements the default functionality; parser writers can instantiate HandlerBase to obtain a default handler. The application can find the location of any document event using the Locator interface supplied by the Parser through the setDocumentLocator method.
@deprecated This interface has been replaced by the SAX2{@link org.xml.sax.ContentHandler ContentHandler}interface, which includes Namespace support. @since SAX 1.0 @author David Megginson @version 2.0.1 (sax2r2) @see org.xml.sax.Parser#setDocumentHandler @see org.xml.sax.Locator @see org.xml.sax.HandlerBase

      if ( ! _insideRoot )
    throw new SAXException( Messages.format( "dsml.expectingOpeningTag",
               XML.Namespace.Root, tagName ) );
      if ( tagName.equals( XML.Schema.Element ) ||
     tagName.equals( XML.Entries.Element ) ) {
    DocumentHandler entry;


    entry = getEntryConsumer();
    entry.startElement( tagName, attr );
    _redirect = entry;
      } else {
    throw new SAXException( Messages.format( "dsml.openingTagNotRecognized",
               tagName ) );
      }

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        Parser parser = Configuration.getDefaultParser();
        if (parser == null) {
            throw new SAXException("Unable to create parser");
        }


        DocumentHandler handler = new AttributeInterceptor();
        parser.setDocumentHandler(handler);
        try {
            parser.parse(new InputSource(_reader));
        } catch (IOException exception) {
            throw new SAXException(exception.getMessage(), exception);

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            throw new IOException("Unable to obtain serailizer");
        }


        serializer.setOutputCharStream(writer);


        DocumentHandler handler = serializer.asDocumentHandler();


        if (handler == null) {
            String err = "The following serializer is not SAX capable: ";
            err += serializer.getClass().getName();
            err += "; cannot proceed.";

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            throw new IOException(message);
        }


        serializer.setOutputCharStream(writer);


        DocumentHandler handler = serializer.asDocumentHandler();


        if (handler == null) {
            String err = "The following serializer is not SAX capable: ";
            err += serializer.getClass().getName();
            err += "; cannot proceed.";

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    /**
     * @see org.castor.xml.InternalContext#getSerializer(java.io.OutputStream)
     */
    public DocumentHandler getSerializer(final OutputStream output) throws IOException {
        Serializer serializer;
        DocumentHandler docHandler;


        serializer = getSerializer();
        serializer.setOutputByteStream(output);
        docHandler = serializer.asDocumentHandler();
        if (docHandler == null) {

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    /**
     * @see org.castor.xml.InternalContext#getSerializer(java.io.Writer)
     */
    public DocumentHandler getSerializer(final Writer output) throws IOException {
        Serializer serializer;
        DocumentHandler docHandler;


        serializer = getSerializer();
        serializer.setOutputCharStream(output);
        docHandler = serializer.asDocumentHandler();
        if (docHandler == null) {

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        nameClassWriter = createNameClassWriter();        
 
        // generates SAX events
        try {
            final DocumentHandler handler = writer.getDocumentHandler();
            handler.setDocumentLocator( new LocatorImpl() );
            handler.startDocument();


            // to work around the bug of current serializer,
            // report xmlns declarations as attributes.
            
            if( defaultNs!=null )
                writer.start("grammar",new String[]{
                    "ns",defaultNs,
                    "xmlns",RELAXNGReader.RELAXNGNamespace,
                    "datatypeLibrary", XSDVocabulary.XMLSchemaNamespace });
            else
                writer.start("grammar", new String[]{
                    "xmlns",RELAXNGReader.RELAXNGNamespace,
                    "datatypeLibrary", XSDVocabulary.XMLSchemaNamespace });
            
            
            {// write start pattern.
                writer.start("start");
                writeIsland( g.getTopLevel() );
                writer.end("start");
            }
            
            // write all named expressions
            Iterator itr = exp2name.keySet().iterator();
            while( itr.hasNext() ) {
                Expression exp = (Expression)itr.next();
                String name = (String)exp2name.get(exp);
                if( exp instanceof ReferenceExp )
                    exp = ((ReferenceExp)exp).exp;
                writer.start("define",new String[]{"name",name});
                writeIsland( exp );
                writer.end("define");
            }
            
            writer.end("grammar");
            handler.endDocument();
        } catch( SAXRuntimeException sw ) {
            throw sw.e;
        }
    }

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        if (serializer == null)
            throw new IOException("Unable to obtain serailizer");


        serializer.setOutputCharStream( writer );


        DocumentHandler handler = serializer.asDocumentHandler();


        if ( handler == null ) {
            String err = "The following serializer is not SAX capable: ";
            err += serializer.getClass().getName();
            err += "; cannot proceed.";

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      if ( ! _insideRoot )
    throw new SAXException( Messages.format( "dsml.expectingOpeningTag",
               XML.Namespace.Root, tagName ) );
      if ( tagName.equals( XML.Schema.Element ) ||
     tagName.equals( XML.Entries.Element ) ) {
    DocumentHandler entry;


    entry = getEntryConsumer();
    entry.startElement( tagName, attr );
    _redirect = entry;
      } else {
    throw new SAXException( Messages.format( "dsml.openingTagNotRecognized",
               tagName ) );
      }

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            // page and folder menu definition menu elements ordered
            // polymorphic collection to strip artifical <menu-element>
            // tags enabling Castor XML binding; see JETSPEED-INF/castor/page-mapping.xml
            writer = new OutputStreamWriter(new FileOutputStream(f), PSML_DOCUMENT_ENCODING);
            Serializer serializer = new XMLSerializer(writer, this.format);
            final DocumentHandler handler = serializer.asDocumentHandler();
            Marshaller marshaller = new Marshaller(new DocumentHandler()
                {
                    private int menuDepth = 0;


                    public void characters(char[] ch, int start, int length) throws SAXException
                    {
                        handler.characters(ch, start, length);
                    }


                    public void endDocument() throws SAXException
                    {
                        handler.endDocument();
                    }
                    
                    public void endElement(String name) throws SAXException
                    {
                        // track menu depth
                        if (name.equals("menu"))
                        {
                            menuDepth--;
                        }


                        // filter menu-element noded within menu definition
                        if ((menuDepth == 0) || !name.equals("menu-element"))
                        {
                            handler.endElement(name);
                        }
                    }
                    
                    public void ignorableWhitespace(char[] ch, int start, int length) throws SAXException
                    {
                        handler.ignorableWhitespace(ch, start, length);
                    }
                    
                    public void processingInstruction(String target, String data) throws SAXException
                    {
                        handler.processingInstruction(target, data);
                    }
                    
                    public void setDocumentLocator(Locator locator)
                    {
                        handler.setDocumentLocator(locator);
                    }
                    
                    public void startDocument() throws SAXException
                    {
                        handler.startDocument();
                    }
                    
                    public void startElement(String name, AttributeList atts) throws SAXException
                    {
                        // filter menu-element noded within menu definition
                        if ((menuDepth == 0) || !name.equals("menu-element"))
                        {
                            handler.startElement(name, atts);
                        }


                        // track menu depth
                        if (name.equals("menu"))
                        {

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