jaxpvalidatorcomponent.java

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            return JAXPValidatorComponent.this.getDocumentHandler();
        }
        
        /**
         * Converts the {@link XNIException} received from a downstream
         * component to a {@link SAXException}.
         */
        private SAXException toSAXException( XNIException xe ) {
            Exception e = xe.getException();
            if( e==null )   e = xe;
            if( e instanceof SAXException )  return (SAXException)e;
            return new SAXException(e);
        }
        
        /**
         * Creates a proper {@link QName} object from 3 parts.
         * <p>
         * This method does the symbolization.
         */
        private QName toQName( String uri, String localName, String qname ) {
            String prefix = null;
            int idx = qname.indexOf(':');
            if( idx>0 )
                prefix = symbolize(qname.substring(0,idx));
            
            localName = symbolize(localName);
            qname = symbolize(qname);
            uri = symbolize(uri);

            // notify handlers
            fQName.setValues(prefix, localName, qname, uri);
            return fQName;
        }
    }
    
    /**
     * Converts {@link XNI} events to {@link ContentHandler} events.
     * 
     * <p>
     * Deriving from {@link DefaultXMLDocumentHandler}
     * to reuse its default {@link com.sun.org.apache.xerces.internal.xni.XMLDocumentHandler}
     * implementation.
     * 
     * @author Kohsuke Kawaguchi ([e-mail])
     */
    private final class XNI2SAX extends DefaultXMLDocumentHandler {
        
        private ContentHandler fContentHandler;

        private String fVersion;

        /** Namespace context */
        protected NamespaceContext fNamespaceContext;
        
        /**
         * For efficiency, we reuse one instance.
         */
        private final AttributesProxy fAttributesProxy = new AttributesProxy(null);

        public void setContentHandler( ContentHandler handler ) {
            this.fContentHandler = handler;
        }
        
        public ContentHandler getContentHandler() {
            return fContentHandler;
        }
        

        public void xmlDecl(String version, String encoding, String standalone, Augmentations augs) throws XNIException {
            this.fVersion = version;
        }

        public void startDocument(XMLLocator locator, String encoding, NamespaceContext namespaceContext, Augmentations augs) throws XNIException {
            fNamespaceContext = namespaceContext;
            fContentHandler.setDocumentLocator(new LocatorProxy(locator));
            try {
                fContentHandler.startDocument();
            } catch (SAXException e) {
                throw new XNIException(e);
            }
        }

        public void endDocument(Augmentations augs) throws XNIException {
            try {
                fContentHandler.endDocument();
            } catch (SAXException e) {
                throw new XNIException(e);
            }
        }

        public void processingInstruction(String target, XMLString data, Augmentations augs) throws XNIException {
            try {
                fContentHandler.processingInstruction(target,data.toString());
            } catch (SAXException e) {
                throw new XNIException(e);
            }
        }

        public void startElement(QName element, XMLAttributes attributes, Augmentations augs) throws XNIException {
            try {
                // start namespace prefix mappings
                int count = fNamespaceContext.getDeclaredPrefixCount();
                if (count > 0) {
                    String prefix = null;
                    String uri = null;
                    for (int i = 0; i < count; i++) {
                        prefix = fNamespaceContext.getDeclaredPrefixAt(i);
                        uri = fNamespaceContext.getURI(prefix);
                        fContentHandler.startPrefixMapping(prefix, (uri == null)?"":uri);
                    }
                }
                        
                String uri = element.uri != null ? element.uri : "";
                String localpart = element.localpart;
                fAttributesProxy.setAttributes(attributes);
                fContentHandler.startElement(uri, localpart, element.rawname, fAttributesProxy);
            } catch( SAXException e ) {
                throw new XNIException(e);
            }
        }

        public void endElement(QName element, Augmentations augs) throws XNIException {
            try {
                String uri = element.uri != null ? element.uri : "";
                String localpart = element.localpart;
                fContentHandler.endElement(uri, localpart, element.rawname);
                
                // send endPrefixMapping events
                int count = fNamespaceContext.getDeclaredPrefixCount();
                if (count > 0) {
                    for (int i = 0; i < count; i++) {
                        fContentHandler.endPrefixMapping(fNamespaceContext.getDeclaredPrefixAt(i));
                    }
                }
            } catch( SAXException e ) {
                throw new XNIException(e);
            }
        }

        public void emptyElement(QName element, XMLAttributes attributes, Augmentations augs) throws XNIException {
            startElement(element,attributes,augs);
            endElement(element,augs);
        }

        public void characters(XMLString text, Augmentations augs) throws XNIException {
            try {
                fContentHandler.characters(text.ch,text.offset,text.length);
            } catch (SAXException e) {
                throw new XNIException(e);
            }
        }

        public void ignorableWhitespace(XMLString text, Augmentations augs) throws XNIException {
            try {
                fContentHandler.ignorableWhitespace(text.ch,text.offset,text.length);
            } catch (SAXException e) {
                throw new XNIException(e);
            }
        }
    }
    
    private static final class DraconianErrorHandler implements ErrorHandler {

        /**
         * Singleton instance.
         */
        private static final DraconianErrorHandler ERROR_HANDLER_INSTANCE 
            = new DraconianErrorHandler();
        
        private DraconianErrorHandler() {}
        
        /** Returns the one and only instance of this error handler. */
        public static DraconianErrorHandler getInstance() {
            return ERROR_HANDLER_INSTANCE;
        }
        
        /** Warning: Ignore. */
        public void warning(SAXParseException e) throws SAXException {
            // noop
        }
        
        /** Error: Throws back SAXParseException. */
        public void error(SAXParseException e) throws SAXException {
            throw e;
        }
        
        /** Fatal Error: Throws back SAXParseException. */
        public void fatalError(SAXParseException e) throws SAXException {
            throw e;
        }
        
    } // DraconianErrorHandler
    
    
    /**
     * Compares the given {@link Attributes} with {@link #fCurrentAttributes}
     * and update the latter accordingly.
     */
    private void updateAttributes( Attributes atts ) {
        int len = atts.getLength();
        for( int i=0; i<len; i++ ) {
            String aqn = atts.getQName(i);
            int j = fCurrentAttributes.getIndex(aqn);
            String av = atts.getValue(i);
            if(j==-1) {
                // newly added attribute. add to the current attribute list.
                
                String prefix;
                int idx = aqn.indexOf(':');
                if( idx<0 ) {
                    prefix = null;
                } else {
                    prefix = symbolize(aqn.substring(0,idx));
                }
                
                j = fCurrentAttributes.addAttribute(
                    new QName(
                        prefix,
                        symbolize(atts.getLocalName(i)),
                        symbolize(aqn),
                        symbolize(atts.getURI(i))),
                    atts.getType(i),av);
            } else {
                // the attribute is present.
                if( !av.equals(fCurrentAttributes.getValue(j)) ) {
                    // but the value was changed.
                    fCurrentAttributes.setValue(j,av);
                }
            }
            
            /** Augmentations augs = fCurrentAttributes.getAugmentations(j);
            augs.putItem( Constants.TYPEINFO,
                typeInfoProvider.getAttributeTypeInfo(i) );
            augs.putItem( Constants.ID_ATTRIBUTE,
                typeInfoProvider.isIdAttribute(i)?Boolean.TRUE:Boolean.FALSE ); **/
        }
    }
    
    private String symbolize( String s ) {
        return fSymbolTable.addSymbol(s);
    }

    
    /**
     * {@link TypeInfoProvider} that returns no info.
     */
    private static final TypeInfoProvider noInfoProvider = new TypeInfoProvider() {
        public TypeInfo getElementTypeInfo() {
            return null;
        }
        public TypeInfo getAttributeTypeInfo(int index) {
            return null;
        }
        public TypeInfo getAttributeTypeInfo(String attributeQName) {
            return null;
        }
        public TypeInfo getAttributeTypeInfo(String attributeUri, String attributeLocalName) {
            return null;
        }
        public boolean isIdAttribute(int index) {
            return false;
        }
        public boolean isSpecified(int index) {
            return false;
        }
    };
    
    //
    //
    // XMLComponent implementation.
    //
    //

    // no property/feature supported
    public String[] getRecognizedFeatures() {
        return null;
    }

    public void setFeature(String featureId, boolean state) throws XMLConfigurationException {
    }

    public String[] getRecognizedProperties() {
        return new String[]{ENTITY_MANAGER, ERROR_REPORTER, SYMBOL_TABLE};
    }

    public void setProperty(String propertyId, Object value) throws XMLConfigurationException {
    }
    
    public Boolean getFeatureDefault(String featureId) {
        return null;
    }

    public Object getPropertyDefault(String propertyId) {
        return null;
    }

}