xmlreaderbase.java

openlogic-jdom-1.1-all-src-1.zip 可以用于操作xml文件

     */
    public void dataElement (String localName, String content)
    throws SAXException
    {
        dataElement("", localName, "", EMPTY_ATTS, content);
    }


    /**
     * Add a string of character data, with XML escaping.
     *
     * <p>This is a convenience method that takes an XML
     * String, converts it to a character array, then invokes
     * {@link @see org.xml.sax.ContentHandler#characters}.</p>
     *
     * @param data The character data.
     * @exception org.xml.sax.SAXException If a filter
     *            further down the chain raises an exception.
     * @see @see org.xml.sax.ContentHandler#characters
     */
    public void characters (String data)
    throws SAXException
    {
        char ch[] = data.toCharArray();
        characters(ch, 0, ch.length);
    }



    ////////////////////////////////////////////////////////////////////
    // Implementation of org.xml.sax.XMLReader.
    ////////////////////////////////////////////////////////////////////
    
    
    /**
     * Set the state of a feature.
     *
     * <p>This will always fail.</p>
     *
     * @param name The feature name.
     * @param state The requested feature state.
     * @exception org.xml.sax.SAXNotRecognizedException When the
     *            XMLReader does not recognize the feature name.
     * @exception org.xml.sax.SAXNotSupportedException When the
     *            XMLReader recognizes the feature name but
     *            cannot set the requested value.
     * @see org.xml.sax.XMLReader#setFeature
     */
    public void setFeature (String name, boolean state)
    throws SAXNotRecognizedException, SAXNotSupportedException
    {
        throw new SAXNotRecognizedException("Feature: " + name);
    }
    
    
    /**
     * Look up the state of a feature.
     *
     * <p>This will always fail.</p>
     *
     * @param name The feature name.
     * @return The current state of the feature.
     * @exception org.xml.sax.SAXNotRecognizedException When the
     *            XMLReader does not recognize the feature name.
     * @exception org.xml.sax.SAXNotSupportedException When the
     *            XMLReader recognizes the feature name but
     *            cannot determine its state at this time.
     * @see org.xml.sax.XMLReader#getFeature
     */
    public boolean getFeature (String name)
    throws SAXNotRecognizedException, SAXNotSupportedException
    {
        throw new SAXNotRecognizedException("Feature: " + name);
    }
    
    
    /**
     * Set the value of a property.
     *
     * <p>Only lexical-handler properties are recognized.</p>
     *
     * @param name The property name.
     * @param state The requested property value.
     * @exception org.xml.sax.SAXNotRecognizedException When the
     *            XMLReader does not recognize the property name.
     * @exception org.xml.sax.SAXNotSupportedException When the
     *            XMLReader recognizes the property name but
     *            cannot set the requested value.
     * @see org.xml.sax.XMLReader#setProperty
     */
    public void setProperty (String name, Object value)
    throws SAXNotRecognizedException, SAXNotSupportedException
    {
        for (int i = 0; i < LEXICAL_HANDLER_NAMES.length; i++) {
            if (LEXICAL_HANDLER_NAMES[i].equals(name)) {
                setLexicalHandler((LexicalHandler) value);
                return;
            }
        }
        throw new SAXNotRecognizedException("Property: " + name);
    }
    
    
    /**
     * Look up the value of a property.
     *
     * <p>Only lexical-handler properties are recognized.</p>
     *
     * @param name The property name.
     * @return The current value of the property.
     * @exception org.xml.sax.SAXNotRecognizedException When the
     *            XMLReader does not recognize the feature name.
     * @exception org.xml.sax.SAXNotSupportedException When the
     *            XMLReader recognizes the property name but
     *            cannot determine its value at this time.
     * @see org.xml.sax.XMLReader#setFeature
     */
    public Object getProperty (String name)
    throws SAXNotRecognizedException, SAXNotSupportedException
    {
        for (int i = 0; i < LEXICAL_HANDLER_NAMES.length; i++) {
            if (LEXICAL_HANDLER_NAMES[i].equals(name)) {
                return getLexicalHandler();
            }
        }
        throw new SAXNotRecognizedException("Property: " + name);
    }


    /**
     * Parse a document. Subclass must implement.
     *
     * @param input The input source for the document entity.
     * @exception org.xml.sax.SAXException Any SAX exception, possibly
     *            wrapping another exception.
     * @exception java.io.IOException An IO exception from the parser,
     *            possibly from a byte stream or character stream
     *            supplied by the application.
     * @see org.xml.sax.XMLReader#parse(org.xml.sax.InputSource)
     */
    public abstract void parse (InputSource input)
    throws SAXException, IOException;


    /**
     * Parse a document.
     *
     * @param systemId The system identifier as a fully-qualified URI.
     * @exception org.xml.sax.SAXException Any SAX exception, possibly
     *            wrapping another exception.
     * @exception java.io.IOException An IO exception from the parser,
     *            possibly from a byte stream or character stream
     *            supplied by the application.
     * @see org.xml.sax.XMLReader#parse(java.lang.String)
     */
    public void parse (String systemId)
    throws SAXException, IOException
    {
        parse(new InputSource(systemId));
    }


    /**
     * Set the entity resolver.
     *
     * @param resolver The new entity resolver.
     * @exception java.lang.NullPointerException If the resolver
     *            is null.
     * @see org.xml.sax.XMLReader#setEntityResolver
     */
    public void setEntityResolver (EntityResolver resolver)
    {
        if (resolver == null) {
            throw new NullPointerException("Null entity resolver");
        } else {
            entityResolver = resolver;
        }
    }
    
    
    /**
     * Get the current entity resolver.
     *
     * @return The current entity resolver, or null if none was set.
     * @see org.xml.sax.XMLReader#getEntityResolver
     */
    public EntityResolver getEntityResolver ()
    {
        return entityResolver;
    }
    
    
    /**
     * Set the DTD event handler.
     *
     * @param resolver The new DTD handler.
     * @exception java.lang.NullPointerException If the handler
     *            is null.
     * @see org.xml.sax.XMLReader#setDTDHandler
     */
    public void setDTDHandler (DTDHandler handler)
    {
        if (handler == null) {
            throw new NullPointerException("Null DTD handler");
        } else {
            dtdHandler = handler;
        }
    }
    
    
    /**
     * Get the current DTD event handler.
     *
     * @return The current DTD handler, or null if none was set.
     * @see org.xml.sax.XMLReader#getDTDHandler
     */
    public DTDHandler getDTDHandler ()
    {
        return dtdHandler;
    }
    
    
    /**
     * Set the content event handler.
     *
     * @param resolver The new content handler.
     * @exception java.lang.NullPointerException If the handler
     *            is null.
     * @see org.xml.sax.XMLReader#setContentHandler
     */
    public void setContentHandler (ContentHandler handler)
    {
        if (handler == null) {
            throw new NullPointerException("Null content handler");
        } else {
            contentHandler = handler;
        }
    }
    
    
    /**
     * Get the content event handler.
     *
     * @return The current content handler, or null if none was set.
     * @see org.xml.sax.XMLReader#getContentHandler
     */
    public ContentHandler getContentHandler ()
    {
        return contentHandler;
    }
    
    
    /**
     * Set the error event handler.
     *
     * @param handle The new error handler.
     * @exception java.lang.NullPointerException If the handler
     *            is null.
     * @see org.xml.sax.XMLReader#setErrorHandler
     */
    public void setErrorHandler (ErrorHandler handler)
    {
        if (handler == null) {
            throw new NullPointerException("Null error handler");
        } else {
            errorHandler = handler;
        }
    }
    
    
    /**
     * Get the current error event handler.
     *
     * @return The current error handler, or null if none was set.
     * @see org.xml.sax.XMLReader#getErrorHandler
     */
    public ErrorHandler getErrorHandler ()
    {
        return errorHandler;
    }



    ////////////////////////////////////////////////////////////////////
    // Registration of org.xml.sax.ext.LexicalHandler.
    ////////////////////////////////////////////////////////////////////


    /**
     * Set the lexical handler.
     *
     * @param handler The new lexical handler.
     * @exception java.lang.NullPointerException If the handler
     *            is null.
     */
    public void setLexicalHandler (LexicalHandler handler)
    {
        if (handler == null) {
            throw new NullPointerException("Null lexical handler");
        } else {
            lexicalHandler = handler;
        }
    }
    
    
    /**
     * Get the current lexical handler.
     *
     * @return The current lexical handler, or null if none was set.
     */
    public LexicalHandler getLexicalHandler ()
    {
        return lexicalHandler;
    }


    
    ////////////////////////////////////////////////////////////////////
    // Implementation of org.xml.sax.EntityResolver.
    ////////////////////////////////////////////////////////////////////
    
    
    /**
     * Resolves an external entity.
     *
     * @param publicId The entity's public identifier, or null.
     * @param systemId The entity's system identifier.
     * @return A new InputSource or null for the default.
     * @exception org.xml.sax.SAXException The client may throw
     *            an exception during processing.
     * @exception java.io.IOException The client may throw an
     *            I/O-related exception while obtaining the
     *            new InputSource.
     * @see org.xml.sax.EntityResolver#resolveEntity
     */
    public InputSource resolveEntity (String publicId, String systemId)
    throws SAXException /* IOException added in SAX2.01 bugfix release */
    {
        if (entityResolver != null) {
            try {
                return entityResolver.resolveEntity(publicId, systemId);
            }
            catch (IOException ex) {
                throw new SAXException(ex);
            }
        } else {
            return null;
        }
    }
    
    
    
    ////////////////////////////////////////////////////////////////////
    // Implementation of org.xml.sax.DTDHandler.
    ////////////////////////////////////////////////////////////////////
    
    
    /**
     * Add notation declaration.
     *
     * @param name The notation name.
     * @param publicId The notation's public identifier, or null.
     * @param systemId The notation's system identifier, or null.
     * @exception org.xml.sax.SAXException The client may throw
     *            an exception during processing.
     * @see org.xml.sax.DTDHandler#notationDecl
     */
    public void notationDecl (String name, String publicId, String systemId)
    throws SAXException
    {
        if (dtdHandler != null) {
            dtdHandler.notationDecl(name, publicId, systemId);
        }
    }
    
    
    /**
     * Add unparsed entity declaration.
     *
     * @param name The entity name.
     * @param publicId The entity's public identifier, or null.
     * @param systemId The entity's system identifier, or null.
     * @param notationName The name of the associated notation.
     * @exception org.xml.sax.SAXException The client may throw
     *            an exception during processing.
     * @see org.xml.sax.DTDHandler#unparsedEntityDecl
     */
    public void unparsedEntityDecl (String name, String publicId,
    String systemId, String notationName)
    throws SAXException
    {
        if (dtdHandler != null) {
            dtdHandler.unparsedEntityDecl(name, publicId, systemId,
            notationName);
        }
    }
    
    
    
    ////////////////////////////////////////////////////////////////////
    // Implementation of org.xml.sax.ContentHandler.
    ////////////////////////////////////////////////////////////////////
    
    
    /**
     * Assigns the document locator.