import javax.xml.stream.*;
import java.io.*;
import java.util.*;

public class Map2Xml {
    public static void main(String[] args) {
	Map<String, Integer> m = Map2Xml.createRandomMap();
	System.out.println("Starting map:");
	System.out.println(m);
	// Now write it as xml
	try {
	    Map2Xml.toXml(m, new FileWriter(args[0]));
	}
	catch(IOException e) {
	    e.printStackTrace();
	}
	catch(XMLStreamException e) {
	    e.printStackTrace();
	}
    }

    public static Map<String, Integer> createRandomMap() {
	Map<String, Integer> m = new HashMap<String, Integer>(5);
	for(char i = 'a';i < 'f';i++) {
	    m.put(String.valueOf(i), (int)(Math.random() * 99));
	}
	return m;
    }

    public static <K,V> void toXml(Map<K, V> map, Writer out) throws IOException, XMLStreamException {
	XMLStreamWriter xsw = null;
	try {
	    try {
		XMLOutputFactory xof = XMLOutputFactory.newInstance();
		// If you want pretty-printing, you can use:
		//xsw = new javanet.staxutils.IndentingXMLStreamWriter(xof.createXMLStreamWriter(out));
		xsw = xof.createXMLStreamWriter(out);
		xsw.writeStartDocument("utf-8", "1.0");
		xsw.writeStartElement("entries");

		// Do the Collection
		for(Map.Entry<K, V> e : map.entrySet()) {
		    xsw.writeStartElement("entry");
		    xsw.writeAttribute("key", e.getKey().toString());
		    xsw.writeAttribute("value", e.getValue().toString());
		    xsw.writeEndElement();
		}
		xsw.writeEndElement();
		xsw.writeEndDocument();
	    }
	    finally {
		if (out != null) {
		    try { out.close() ; } catch(IOException e) { /* ignore */ }	
		}
	    }// end inner finally
	}
	finally {
	    if (xsw != null) {
		try { xsw.close() ; } catch(XMLStreamException e) { /* ignore */ }	
	    }
	}
    }


}