Standardy analýzy a zpracování XML dat

Example 1.2. StAX - přístup kurzorem

import java.io.*;
import javax.xml.stream.*;
public class ParseByIterator {
   public static void main(String[] args) 
                        throws FileNotFoundException, XMLStreamException {
      // Use reference implementation
      System.setProperty(
         "javax.xml.stream.XMLInputFactory",
         "com.bea.xml.stream.MXParserFactory");
      // Create an input factory
      XMLInputFactory xmlif = XMLInputFactory.newInstance();
      // Create an XML stream reader
      XMLStreamReader xmlr =
         xmlif.createXMLStreamReader(new FileReader("somefile.xml"));
      // Loop over XML input stream and process events
      while (xmlr.hasNext()) {
         processEvent(xmlr);
         xmlr.next();
      }
   }
   /**
    * Process a single event
    * @param xmlr - the XML stream reader
    */
   private static void processEvent(XMLStreamReader xmlr) {
      switch (xmlr.getEventType()) {
         case XMLStreamConstants.START_ELEMENT :
            processName(xmlr);
            processAttributes(xmlr);
            break;
         case XMLStreamConstants.END_ELEMENT :
            processName(xmlr);
            break;
         case XMLStreamConstants.SPACE :
         case XMLStreamConstants.CHARACTERS :
            int start = xmlr.getTextStart();
            int length = xmlr.getTextLength();
            String text =
               new String(xmlr.getTextCharacters(), start, length);
            break;
         case XMLStreamConstants.COMMENT :
         case XMLStreamConstants.PROCESSING_INSTRUCTION :
            if (xmlr.hasText()) {
               String piOrComment = xmlr.getText();
            }
            break;
      }
   }
   private static void processName(XMLStreamReader xmlr) {
      if (xmlr.hasName()) {
         String prefix = xmlr.getPrefix();
         String uri = xmlr.getNamespaceURI();
         String localName = xmlr.getLocalName();
      }
   }
   private static void processAttributes(XMLStreamReader xmlr) {
      for (int i = 0; i < xmlr.getAttributeCount(); i++)
         processAttribute(xmlr, i);
   }
   private static void processAttribute(XMLStreamReader xmlr, int index) {
      String prefix = xmlr.getAttributePrefix(index);
      String namespace = xmlr.getAttributeNamespace(index);
      String localName = xmlr.getAttributeName(index);
      String value = xmlr.getAttributeValue(index);
   }
}