Gets the given element's first ancestor DOM element with the specified name. - Java XML

Java examples for XML:DOM Element

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Description

Gets the given element's first ancestor DOM element with the specified name.

Demo Code

/*//w w w. j av  a  2 s. co m
 * ome.xml.DOMUtil
 *
 *-----------------------------------------------------------------------------
 *
 *  Copyright (C) 2007-2008 Open Microscopy Environment
 *      Massachusetts Institute of Technology,
 *      National Institutes of Health,
 *      University of Dundee,
 *      University of Wisconsin-Madison
 *
 *
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License as published by the Free Software Foundation; either
 *    version 2.1 of the License, or (at your option) any later version.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *-----------------------------------------------------------------------------
 */
//package com.java2s;

import org.w3c.dom.*;

public class Main {
    /**
     * Gets the given element's first ancestor DOM element
     * with the specified name.
     */
    public static Element getAncestorElement(String name, Element el) {
        if (name == null || el == null)
            return null;
        Node parent = el.getParentNode();
        while (parent != null && !name.equals(getName(parent))) {
            parent = parent.getParentNode();
        }
        if (parent == null || (!(parent instanceof Element)))
            return null;
        return (Element) parent;
    }

    /** Gets the local (sans namespace) name of the given node. */
    public static String getName(Node node) {
        // NB: The node.getLocalName() method does not work.
        String name = node.getNodeName();
        int colon = name.lastIndexOf(":");
        return colon < 0 ? name : name.substring(colon + 1);
    }
}

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