basexmlparser.java

First of all, the Applet-phone is a SIP User-Agent with audio and text messaging capabilities. But

/*
 * BadgeXMLParser.java
 *
 * Created on July 31, 2003, 8:53 PM
 */

package gov.nist.examples.bps.presenceserver;

import java.io.*;

import javax.xml.parsers.ParserConfigurationException;
import javax.xml.parsers.SAXParser;
import javax.xml.parsers.SAXParserFactory;

import org.xml.sax.*;
import org.xml.sax.helpers.DefaultHandler;
import org.xml.sax.SAXException;
/**
 *
 * @author  olivier
 * @version 
 */
public class BaseXMLParser extends DefaultHandler {

    private Base base;
	private XMLReader xmlReader;
    
    /** Start the parsing
     * @param file to parse
     */
    public BaseXMLParser() {
		try{
			SAXParserFactory saxParserFactory=SAXParserFactory.newInstance();
			SAXParser saxParser = saxParserFactory.newSAXParser();
			xmlReader = saxParser.getXMLReader();
			xmlReader.setContentHandler(this);
			xmlReader.setFeature
			("http://xml.org/sax/features/validation",false);
			// parse the xml specification for the event tags.				
	
		} catch (SAXParseException spe) {
			spe.printStackTrace();
		} catch (SAXException sxe) {
			sxe.printStackTrace();
		} catch(ParserConfigurationException pce){
			pce.printStackTrace();
		}
    }
    
    public Base parseString(String text) {
        try {
            StringReader stringReader=new StringReader(text);
            InputSource inputSource=new InputSource(stringReader);
            xmlReader.parse(inputSource);
            return base;
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
   
    
    //===========================================================
    // SAX DocumentHandler methods
    //===========================================================

    public void startDocument() throws SAXException {
        try {
             System.out.println("Parsing XML bases file");
        } 
        catch (Exception e) {
            throw new SAXException("BasesXMLParser error", e);
        }
    }

    public void endDocument() throws SAXException {
        try {
          System.out.println("XML Bases file parsed successfully!!!");
        } 
        catch (Exception e) {
            throw new SAXException("BasesXMLParser error", e);
        }
    }

    public void startElement(String namespaceURI,
                             String lName, // local name
                             String qName, // qualified name
                             Attributes attrs)
                             throws SAXException
    {
        String element=qName;
      

        if (element.compareToIgnoreCase("base") ==0 ) {
            
            String identifier=attrs.getValue("identifier");
            if (identifier==null || identifier.trim().equals("") ) {
                throw new SAXException("ERROR, BaseXMLParser, startElement()"+
                " the identifier attribute is missing!!!");
            }
            
            String location=attrs.getValue("location");
            if (location==null || location.trim().equals("") ) {
                throw new SAXException("ERROR, BaseXMLParser, startElement()"+
                " the location attribute is missing!!!");
            }
            
            base=new Base(identifier,location);
        }
    }
    
    public void endElement(String namespaceURI,
    String sName, // simple name
    String qName  // qualified name
    )
    throws SAXException
    {
        String element=qName;
      
    }
    
    public void characters(char buf[], int offset, int len)
    throws SAXException
    {
        String str = new String(buf, offset, len);
    }

}