StAX - příklad s iterátorem

Příklad 1. StAX - přístup iterátorem

import java.io.*;
import java.util.Iterator;
import javax.xml.namespace.QName;
import javax.xml.stream.*;
import javax.xml.stream.events.*;
public class ParseByEvent {
   public static void main(String[] args) 
                        throws FileNotFoundException, XMLStreamException {
      // Use the reference implementation for the XML input factory
      System.setProperty("javax.xml.stream.XMLInputFactory", 
                                  "com.bea.xml.stream.MXParserFactory");
      // Create the XML input factory
      XMLInputFactory factory = XMLInputFactory.newInstance();
      // Create the XML event reader
      FileReader reader = new FileReader("somefile.xml");
      XMLEventReader r = 
         factory.createXMLEventReader(reader);
      // Loop over XML input stream and process events
      while(r.hasNext()) {
         XMLEvent e = r.next();
         processEvent(e);
      }
   }
/**
 * Process a single XML event
 * @param e - the event to be processed
 */
  private static void processEvent(XMLEvent e) {
     if (e.isStartElement()) {
        QName qname = ((StartElement) e).getName();
        String namespaceURI = qname.getNamespaceURI();
        String localName = qname.getLocalPart();
        Iterator iter = ((StartElement) e).getAttributes();
        while (iter.hasNext()) {
           Attribute attr = (Attribute) iter.next();
           QName attributeName = attr.getName();
           String attributeValue = attr.getValue();
        }
     }
     if (e.isEndElement()) {
        QName qname = ((EndElement) e).getName();
     }
     if (e.isCharacters()) {
        String text = ((Characters) e).getData();
     }
     if (e.isStartDocument()) {
        String version = ((StartDocument) e).getVersion();
        String encoding = ((StartDocument) e).getCharacterEncodingScheme();
        boolean isStandAlone = ((StartDocument) e).isStandalone();
     }
  }
}