Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Open Source License 

import java.util.Enumeration;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Vector;
import java.util.StringTokenizer;

import org.w3c.dom.Element;

import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class Main {
    /**
     * print out all distinct paths in an XML subtree
     * @param el
     */
    public static void writeAllPaths(Element el) {
        Hashtable<String, String> allPaths = new Hashtable<String, String>();
        String path = "";
        collectPaths(path, allPaths, el);
        for (Enumeration<String> en = allPaths.keys(); en.hasMoreElements();)
            System.out.println("path: " + en.nextElement());
    }

    private static void collectPaths(String path, Hashtable<String, String> allPaths, Element el) {
        String newPath = path + el.getLocalName() + "/";
        allPaths.put(newPath, "1");
        for (Iterator<Element> it = childElements(el).iterator(); it.hasNext();)
            collectPaths(newPath, allPaths, it.next());
    }

    /**
     * get the name of an XML element, with the namespace prefix stripped off
     * @param el
     * @return
     */
    public static String getLocalName(Node el) {
        String locName = "";
        StringTokenizer st = new StringTokenizer(el.getNodeName(), ":");
        while (st.hasMoreTokens())
            locName = st.nextToken();
        return locName;
    }

    /**
     * Vector of child elements of an element
     */
    public static Vector<Element> childElements(Element el) {
        Vector<Element> res = new Vector<Element>();
        NodeList nodes = el.getChildNodes();
        for (int i = 0; i < nodes.getLength(); i++) {
            Node nd = nodes.item(i);
            if (nd instanceof Element) {
                Element eg = (Element) nd;
                res.addElement(eg);
            }
        }
        return res;
    }
}