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.LinkedList;
import java.util.List;

import org.w3c.dom.Element;

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

public class Main {
    /**
     * Reqursion search in node for elements with paramantrs
     * @param node
     * @param tagName
     * @param attrName
     * @param attrValue
     * @return
     */
    public static List<Element> findAllElementsByAttribute(Node node, String tagName, String attrName,
            String attrValue) {
        List<Element> result = new LinkedList<Element>();
        findAllElementsByAttribute(node, tagName, attrName, attrValue, result);
        return result;
    }

    private static void findAllElementsByAttribute(Node node, String tagName, String attrName, String attrValue,
            List<Element> result) {
        if (node == null) {
            return;
        }
        NodeList nodeList = node.getChildNodes();
        if (nodeList == null) {
            return;
        }
        for (int i = 0; i < nodeList.getLength(); ++i) {
            Node currNode = nodeList.item(i);
            Element element = checkIfElement(currNode, tagName);
            if (element != null && element.getAttribute(attrName).equals(attrValue)) {
                result.add(element);
                continue;
            }
            findAllElementsByAttribute(currNode, tagName, attrName, attrValue, result);
        }
    }

    public static final Element checkIfElement(Node node) {
        Element result = null;
        if (isElement(node)) {
            result = (Element) node;
        }
        return result;
    }

    public static final Element checkIfElement(Node node, String tag) {
        Element result = null;
        if (isElement(node)) {
            Element tmp = (Element) node;
            if (tag == null || tmp.getTagName().equals(tag)) {
                result = tmp;
            }
        }
        return result;
    }

    public static boolean isElement(Node node) {
        return node.getNodeType() == Node.ELEMENT_NODE;
    }
}