Java XML Child Element Attribute getChildAttribute(Node n, String childName, String attribute)

Here you can find the source of getChildAttribute(Node n, String childName, String attribute)

Description

Reads a single attribute of a single child node

License

Open Source License

Parameter

Parameter Description
n a parameter
childName a parameter
attribute a parameter

Return

value or null

Declaration

public static String getChildAttribute(Node n, String childName, String attribute) 

Method Source Code

//package com.java2s;
/* ========================================================================
* Copyright (c) 2005-2015 The OPC Foundation, Inc. All rights reserved.
*
* OPC Foundation MIT License 1.00/*  w w w.jav a 2s  . c om*/
* 
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use,
* copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following
* conditions:
* 
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
* OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
* OTHER DEALINGS IN THE SOFTWARE.
*
* The complete license agreement can be found here:
* http://opcfoundation.org/License/MIT/1.00/
* ======================================================================*/

import org.w3c.dom.Node;

public class Main {
    /**
     * Reads a single attribute of a single child node
     * @param n
     * @param childName
     * @param attribute
     * @return value or null
     */
    public static String getChildAttribute(Node n, String childName, String attribute) {
        Node c = getSingleChild(n, childName);
        return c.getAttributes().getNamedItem(attribute).getNodeValue();
    }

    /**
     * Get a single child by name
     * @param n
     * @param childName
     * @return
     */
    public static Node getSingleChild(Node n, String childName) {
        Node result = null;
        for (int i = 0; i < n.getChildNodes().getLength(); i++) {
            Node c = n.getChildNodes().item(i);
            if (c.getNodeName().equals(childName)) {
                assert (result == null);
                result = c;
            }
        }
        return result;
    }
}

Related

  1. getChildAttribute(Element root, String childName, String attName)
  2. getChildAttributNode(Node node)