Java XML Has Child getChildHash(Element elem, String elementName, String attrName)

Description

get Child Hash

License

Open Source License

Declaration

public static Hashtable<String, Element> getChildHash(Element elem, String elementName, String attrName) 

Method Source Code

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

import java.util.Hashtable;

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

public class Main {
    public static Hashtable<String, Element> getChildHash(Element elem, String elementName, String attrName) {
        if (elem == null)
            return null;
        NodeList nl = elem.getChildNodes();
        if (nl == null)
            return null;
        Hashtable<String, Element> retlist = new Hashtable<String, Element>(100);
        for (int n = 0; n < nl.getLength(); n++) {
            Node child = nl.item(n);
            if (child instanceof Element) {
                Element element = (Element) child;
                if (!elementName.equals(element.getTagName()))
                    continue;
                String keyValue = element.getAttribute(attrName);
                if (keyValue == null)
                    continue;
                retlist.put(keyValue, element);
            }//  w w w  .  j  a v a  2  s . c  om
        }
        if (retlist.size() == 0)
            return null;
        return retlist;
    }

    public static Hashtable<String, String> getChildHash(Element elem) {
        if (elem == null)
            return null;
        NodeList nl = elem.getChildNodes();
        if (nl == null)
            return null;
        Hashtable<String, String> retlist = new Hashtable<String, String>(nl.getLength());
        for (int n = 0; n < nl.getLength(); n++) {
            Node child = nl.item(n);
            if (child instanceof Element) {
                Element element = (Element) child;
                String key = element.getTagName();
                String value = getSimpleElementText(element);
                retlist.put(key, value);
            }
        }
        if (retlist.size() == 0)
            return null;
        return retlist;
    }

    public static String getSimpleElementText(Element node) {
        if (node == null)
            return null;
        StringBuffer sb = new StringBuffer();
        NodeList children = node.getChildNodes();
        for (int i = 0; i < children.getLength(); i++) {
            Node child = children.item(i);
            if (child instanceof Text) {
                sb.append(child.getNodeValue());
            }
        }
        return sb.toString();
    }
}

Related

1. getLastVisibleChildElement(Node parent, Hashtable hiddenNodes)
2. hasActivityChildNode(Node node)
3. hasAnyChildElement(final Element e)
4. hasChild(Element element, String child)