xmldtdloader.java

java1.6众多例子参考

     * that do not affect the operation of the component.
     * 
     * @param featureId The feature identifier.
     * @param state     The state of the feature.
     *
     * @throws SAXNotRecognizedException The component should not throw
     *                                   this exception.
     * @throws SAXNotSupportedException The component should not throw
     *                                  this exception.
     */
    public void setFeature(String featureId, boolean state)
            throws XMLConfigurationException {
        if(featureId.equals(VALIDATION)) {
            fValidation = state;
        } else if(featureId.equals(WARN_ON_DUPLICATE_ATTDEF)) {
            fWarnDuplicateAttdef = state;
        } else if(featureId.equals(NOTIFY_CHAR_REFS)) {
            fDTDScanner.setFeature(featureId, state);
        } else if(featureId.equals(STANDARD_URI_CONFORMANT_FEATURE)) {
            fStrictURI = state;
        }  else {
            throw new XMLConfigurationException(XMLConfigurationException.NOT_RECOGNIZED, featureId);
        }
    } // setFeature(String,boolean)

    /**
     * Returns a list of property identifiers that are recognized by
     * this component. This method may return null if no properties
     * are recognized by this component.
     */
    public String[] getRecognizedProperties() {
        return (String[])(LOADER_RECOGNIZED_PROPERTIES.clone());
    } // getRecognizedProperties():String[]

    /**
     * Returns the state of a property.
     * 
     * @param propertyId The property identifier.
     * 
     * @throws XMLConfigurationException Thrown on configuration error.
     */
    public Object getProperty(String propertyId) 
            throws XMLConfigurationException {
        if(propertyId.equals( SYMBOL_TABLE)) {
            return fSymbolTable;
        } else if(propertyId.equals( ERROR_REPORTER)) {
            return fErrorReporter;
        } else if(propertyId.equals( ERROR_HANDLER)) {
            return fErrorReporter.getErrorHandler();
        } else if(propertyId.equals( ENTITY_RESOLVER)) {
            return fEntityResolver;
        } else if(propertyId.equals( GRAMMAR_POOL)) {
            return fGrammarPool;
        } else if(propertyId.equals( DTD_VALIDATOR)) {
            return fValidator;
        } 
        throw new XMLConfigurationException(XMLConfigurationException.NOT_RECOGNIZED, propertyId);
    } // getProperty(String):  Object

    /**
     * Sets the value of a property. This method is called by the component
     * manager any time after reset when a property changes value. 
     * <p>
     * <strong>Note:</strong> Components should silently ignore properties
     * that do not affect the operation of the component.
     * 
     * @param propertyId The property identifier.
     * @param value      The value of the property.
     *
     * @throws SAXNotRecognizedException The component should not throw
     *                                   this exception.
     * @throws SAXNotSupportedException The component should not throw
     *                                  this exception.
     */
    public void setProperty(String propertyId, Object value)
            throws XMLConfigurationException {
        if(propertyId.equals( SYMBOL_TABLE)) {
            fSymbolTable = (SymbolTable)value;
            fDTDScanner.setProperty(propertyId, value);
            fEntityManager.setProperty(propertyId, value);
        } else if(propertyId.equals( ERROR_REPORTER)) {
            fErrorReporter = (XMLErrorReporter)value;
            // Add XML message formatter if there isn't one.
            if (fErrorReporter.getMessageFormatter(XMLMessageFormatter.XML_DOMAIN) == null) {
                XMLMessageFormatter xmft = new XMLMessageFormatter();
                fErrorReporter.putMessageFormatter(XMLMessageFormatter.XML_DOMAIN, xmft);
                fErrorReporter.putMessageFormatter(XMLMessageFormatter.XMLNS_DOMAIN, xmft);
            }
            fDTDScanner.setProperty(propertyId, value);
            fEntityManager.setProperty(propertyId, value);
        } else if(propertyId.equals( ERROR_HANDLER)) {
            fErrorReporter.setProperty(propertyId, value);
        } else if(propertyId.equals( ENTITY_RESOLVER)) {
            fEntityResolver = (XMLEntityResolver)value;
        } else if(propertyId.equals( GRAMMAR_POOL)) {
            fGrammarPool = (XMLGrammarPool)value;
        } else {
            throw new XMLConfigurationException(XMLConfigurationException.NOT_RECOGNIZED, propertyId);
        }
    } // setProperty(String,Object)

    /**
     * Returns the state of a feature.
     * 
     * @param featureId The feature identifier.
     * 
     * @throws XMLConfigurationException Thrown on configuration error.
     */
    public boolean getFeature(String featureId) 
            throws XMLConfigurationException {
        if(featureId.equals( VALIDATION)) {
            return fValidation;
        } else if(featureId.equals( WARN_ON_DUPLICATE_ATTDEF)) {
            return fWarnDuplicateAttdef;
        } else if(featureId.equals( NOTIFY_CHAR_REFS)) {
            return fDTDScanner.getFeature(featureId);
        }
        throw new XMLConfigurationException(XMLConfigurationException.NOT_RECOGNIZED, featureId);
    } //getFeature(String):  boolean

    /**
     * Set the locale to use for messages.
     *
     * @param locale The locale object to use for localization of messages.
     *
     * @exception XNIException Thrown if the parser does not support the
     *                         specified locale.
     */
    public void setLocale(Locale locale) {
        fLocale = locale;
    } // setLocale(Locale)

    /** Return the Locale the XMLGrammarLoader is using. */
    public Locale getLocale() {
        return fLocale;
    } // getLocale():  Locale


    /**
     * Sets the error handler.
     *
     * @param errorHandler The error handler.
     */
    public void setErrorHandler(XMLErrorHandler errorHandler) {
        fErrorReporter.setProperty(ERROR_HANDLER, errorHandler);
    } // setErrorHandler(XMLErrorHandler)

    /** Returns the registered error handler.  */
    public XMLErrorHandler getErrorHandler() {
        return fErrorReporter.getErrorHandler();
    } // getErrorHandler():  XMLErrorHandler

    /**
     * Sets the entity resolver.
     *
     * @param entityResolver The new entity resolver.
     */
    public void setEntityResolver(XMLEntityResolver entityResolver) {
        fEntityResolver = entityResolver;
    } // setEntityResolver(XMLEntityResolver)

    /** Returns the registered entity resolver.  */
    public XMLEntityResolver getEntityResolver() {
        return fEntityResolver;
    } // getEntityResolver():  XMLEntityResolver

    /**
     * Returns a Grammar object by parsing the contents of the
     * entity pointed to by source.
     *
     * @param source        the location of the entity which forms
     *                          the starting point of the grammar to be constructed.
     * @throws IOException      When a problem is encountered reading the entity
     *          XNIException    When a condition arises (such as a FatalError) that requires parsing
     *                              of the entity be terminated.
     */
    public Grammar loadGrammar(XMLInputSource source)
            throws IOException, XNIException {
        reset();
        // First chance checking strict URI
        String eid = XMLEntityManager.expandSystemId(source.getSystemId(), source.getBaseSystemId(), fStrictURI);
        fDTDGrammar = new DTDGrammar(fSymbolTable, new XMLDTDDescription(source.getPublicId(), source.getSystemId(), source.getBaseSystemId(), eid, null));
        fGrammarBucket = new DTDGrammarBucket();
        fGrammarBucket.setStandalone(false);
        fGrammarBucket.setActiveGrammar(fDTDGrammar); 
        // no reason to use grammar bucket's "put" method--we
        // know which grammar it is, and we don't know the root name anyway...

        // actually start the parsing!
        try {
            fDTDScanner.setInputSource(source);
            fDTDScanner.scanDTDExternalSubset(true);
        } catch (EOFException e) {
            // expected behaviour...
        }
        finally {
            // Close all streams opened by the parser.
            fEntityManager.closeReaders();
        }
        if(fDTDGrammar != null && fGrammarPool != null) {
            fGrammarPool.cacheGrammars(XMLDTDDescription.XML_DTD, new Grammar[] {fDTDGrammar});
        }
        return fDTDGrammar;
    } // loadGrammar(XMLInputSource):  Grammar

    // reset all the components that we rely upon
    protected void reset() {
        super.reset();
        fDTDScanner.reset();
        fEntityManager.reset();
        fErrorReporter.setDocumentLocator(fEntityManager.getEntityScanner());
    }

} // class XMLDTDLoader