Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
//License from project: Apache License 

import org.w3c.dom.Node;

import java.util.Map;

public class Main {
    public static boolean compareNode(Node nQ, Node nN, Boolean considerLength, Map<String, Node> qvars)
            throws Exception {
        /*System.out.println("current query tree:");
        try {
         System.out.println(printDocument(nQ));
        }catch (Exception e) {
         e.printStackTrace();
        }
        System.out.println("current comp tree:");
        try {
         System.out.println(printDocument(nN));
        }catch (Exception e) {
         e.printStackTrace();
        }// END OF DEBUG output XML */
        if (qvars == null) {
            throw new Exception("qvars array must not be null");
        }
        if (nQ.hasChildNodes()) {
            int nQChildLength = nQ.getChildNodes().getLength();
            if (nN.hasChildNodes() && (!considerLength || nQChildLength == nN.getChildNodes().getLength())) {
                //loop through all childnodes
                for (int i = 0; i < nQChildLength; i++) {
                    //System.out.println("recurse to "+ nQ.getChildNodes().item( i )+"vs"+nN.getChildNodes().item( i )); //DEBUG output XML
                    if (!compareNode(nQ.getChildNodes().item(i), nN.getChildNodes().item(i), considerLength,
                            qvars)) {
                        return false;
                    }
                }
            }
        }
        //check for qvar descendant, add to qvar hashmap for checking (required for checking multiple qvars)
        if (nQ.getNodeName().equals("mws:qvar")) {
            String qvarName = nQ.getAttributes().getNamedItem("name").getNodeValue();
            if (qvars.containsKey(qvarName)) {
                return compareNode(qvars.get(qvarName), nN, considerLength, qvars);
            } else {
                qvars.put(qvarName, nN);
                return true;
            }
        } else {
            //Attributes are ignored; child nodelists are not equal in length and considerlength is false OR reached lowest level: therefore check nodevalue
            if (nQ.getNodeName().equals(nN.getNodeName())) {
                try {
                    return nQ.getNodeValue().trim().equals(nN.getNodeValue().trim());
                } catch (NullPointerException e) {
                    //NodeValue does not exist
                    return true;
                }
            } else {
                return false;
            }
        }
    }
}