Java XML Element Get Value getUniqueSubnode(Element rootNode, String name)

Description

get Unique Subnode

License

Open Source License

Declaration

public static Element getUniqueSubnode(Element rootNode, String name) 

Method Source Code

//package com.java2s;
/**/*www.ja va 2 s .co  m*/
 *  Copyright (C) 2011 by Dimitry Ivanov
 *
 *  This program is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU General Public License
 *  as published by the Free Software Foundation; either version 2
 *  of the License, or (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 */

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

public class Main {
    public static Element getUniqueSubnode(Element rootNode, String name) {
        Element result = null;
        NodeList childNodes = rootNode.getChildNodes();
        for (int i = 0; i < childNodes.getLength(); ++i) {
            Node aNode = childNodes.item(i);
            if (aNode.getNodeType() == Node.ELEMENT_NODE) {
                Element el = (Element) aNode;
                if (name.equals(el.getNodeName())) {
                    if (null == result) {
                        result = el;
                    } else {
                        throw new RuntimeException("Non-unique node: " + name);
                    }
                }
            }
        }

        if (result == null) {
            throw new RuntimeException("Node not found: " + name);
        }

        return result;
    }
}

Related

1. getTrimmedTextContent(Element element)
2. getTrimmedTextContent(Element element)
3. getTrimmedTextValue(Element valueEle)
4. getType(Element elementType)
5. getUniqueElement(Element root, String elementName)
6. getValue(Element e, String tagName)
7. getValue(Element el)
8. getValue(Element element)
9. getValue(Element element)