staxstream2sax.java

java1.6众多例子参考

//                throw new XMLStreamException(e);
//            }
//        } while (len == buf.length);
    }

    private void handleEndElement() throws XMLStreamException {
        QName qName = staxStreamReader.getName();

        try {
            //construct prefix:localName from qName
            String qname = "";
            if (qName.getPrefix() != null && qName.getPrefix().trim().length() != 0){
                qname = qName.getPrefix() + ":";
            }
            qname += qName.getLocalPart();
            
            // fire endElement
            _sax.endElement(
                qName.getNamespaceURI(),
                qName.getLocalPart(),
                qname); 

            // end namespace bindings
            int nsCount = staxStreamReader.getNamespaceCount();
            for (int i = nsCount - 1; i >= 0; i--) {
                String prefix = staxStreamReader.getNamespacePrefix(i);
                if (prefix == null) { // true for default namespace
                    prefix = "";
                }
                _sax.endPrefixMapping(prefix);
            }
        } catch (SAXException e) {
            throw new XMLStreamException(e);
        }
    }

    private void handleStartElement() throws XMLStreamException {

        try {
            // start namespace bindings
            int nsCount = staxStreamReader.getNamespaceCount();
            for (int i = 0; i < nsCount; i++) {
                String prefix = staxStreamReader.getNamespacePrefix(i);
                if (prefix == null) { // true for default namespace
                    prefix = "";
                }
                _sax.startPrefixMapping(
                    prefix,
                    staxStreamReader.getNamespaceURI(i));
            }

            // fire startElement
            QName qName = staxStreamReader.getName();
            String prefix = qName.getPrefix();
            String rawname;
            if(prefix==null || prefix.length()==0)
                rawname = qName.getLocalPart();
            else
                rawname = prefix + ':' + qName.getLocalPart();
            Attributes attrs = getAttributes();
            _sax.startElement(
                qName.getNamespaceURI(),
                qName.getLocalPart(),
                rawname,
                attrs);
        } catch (SAXException e) {
            throw new XMLStreamException(e);
        }
    }

    /**
     * Get the attributes associated with the given START_ELEMENT or ATTRIBUTE
     * StAXevent.
     * 
     * @return the StAX attributes converted to an org.xml.sax.Attributes
     */
    private Attributes getAttributes() {
        AttributesImpl attrs = new AttributesImpl();

        int eventType = staxStreamReader.getEventType();
        if (eventType != XMLStreamConstants.ATTRIBUTE
            && eventType != XMLStreamConstants.START_ELEMENT) {
            throw new InternalError(
                "getAttributes() attempting to process: " + eventType);
        }
        
        // in SAX, namespace declarations are not part of attributes by default.
        // (there's a property to control that, but as far as we are concerned
        // we don't use it.) So don't add xmlns:* to attributes.

        // gather non-namespace attrs
        for (int i = 0; i < staxStreamReader.getAttributeCount(); i++) {
            String uri = staxStreamReader.getAttributeNamespace(i);
            if(uri==null)   uri="";
            String localName = staxStreamReader.getAttributeLocalName(i);
            String prefix = staxStreamReader.getAttributePrefix(i);
            String qName;
            if(prefix==null || prefix.length()==0)
                qName = localName;
            else
                qName = prefix + ':' + localName;
            String type = staxStreamReader.getAttributeType(i);
            String value = staxStreamReader.getAttributeValue(i);

            attrs.addAttribute(uri, localName, qName, type, value);
        }

        return attrs;
    }

    private void handleNamespace() {
        // no-op ???
        // namespace events don't normally occur outside of a startElement
        // or endElement
    }

    private void handleAttribute() {
        // no-op ???
        // attribute events don't normally occur outside of a startElement
        // or endElement
    }

    private void handleDTD() {
        // no-op ???
        // it seems like we need to pass this info along, but how?
    }

    private void handleComment() {
        // no-op ???
    }

    private void handleEntityReference() {
        // no-op ???
    }

    private void handleSpace() {
        // no-op ???
        // this event is listed in the javadoc, but not in the spec.
    }

    private void handleNotationDecl() {
        // no-op ???
        // this event is listed in the javadoc, but not in the spec.
    }

    private void handleEntityDecl() {
        // no-op ???
        // this event is listed in the javadoc, but not in the spec.
    }

    private void handleCDATA() {
        // no-op ???
        // this event is listed in the javadoc, but not in the spec.
    }
    
    
    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public DTDHandler getDTDHandler() { 
	return null;
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public ErrorHandler getErrorHandler() {
	return null;
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public boolean getFeature(String name) throws SAXNotRecognizedException,
	SAXNotSupportedException
    {
	return false;
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public void setFeature(String name, boolean value) throws 
	SAXNotRecognizedException, SAXNotSupportedException 
    {
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public void setDTDHandler(DTDHandler handler) throws NullPointerException {
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public void setEntityResolver(EntityResolver resolver) throws 
	NullPointerException 
    {
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public EntityResolver getEntityResolver() {
	return null;
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public void setErrorHandler(ErrorHandler handler) throws 
	NullPointerException
    {
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public void setProperty(String name, Object value) throws
	SAXNotRecognizedException, SAXNotSupportedException {
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public Object getProperty(String name) throws SAXNotRecognizedException,
	SAXNotSupportedException
    {
	return null;
    }
    
    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public int getColumnNumber() { 
	return 0; 
    }
    
    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public int getLineNumber() { 
	return 0; 
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public String getPublicId() { 
	return null; 
    }

    /**
     * This class is only used internally so this method should never 
     * be called.
     */
    public String getSystemId() { 
	return null; 
    }  
    
}