Main.java Source code

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Here is the source code for Main.java

Source

//package com.java2s;
/* ====================================================================
 * The Apache Software License, Version 1.1
 *
 * Copyright (c) 2000 The Apache Software Foundation.  All rights
 * reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. The end-user documentation included with the redistribution,
 *    if any, must include the following acknowledgment:
 *       "This product includes software developed by the
 *        Apache Software Foundation (http://www.apache.org/)."
 *    Alternately, this acknowledgment may appear in the software itself,
 *    if and wherever such third-party acknowledgments normally appear.
 *
 * 4. The names "Apache" and "Apache Software Foundation" must
 *    not be used to endorse or promote products derived from this
 *    software without prior written permission. For written
 *    permission, please contact apache@apache.org.
 *
 * 5. Products derived from this software may not be called "Apache",
 *    nor may "Apache" appear in their name, without prior written
 *    permission of the Apache Software Foundation.
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED.  IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
 * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 * ====================================================================
 *
 * This software consists of voluntary contributions made by many
 * individuals on behalf of the Apache Software Foundation.  For more
 * information on the Apache Software Foundation, please see
 * <http://www.apache.org/>.
 *
 * Portions of this software are based upon public domain software
 * originally written at the National Center for Supercomputing Applications,
 * University of Illinois, Urbana-Champaign.
 */

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

public class Main {
    /**
     * Creates (only if necessary) and returns the element which is at the end of the specified
     * path.
     * @param doc the target document where the specified path should be created
     * @param path a dot separated string indicating the path to be created
     * @return the component at the end of the newly created path.
     */
    public static Element createLastPathComponent(Document doc, String[] path) {
        Element parent = (Element) doc.getFirstChild();
        if (path == null || parent == null || doc == null)
            throw new IllegalArgumentException("Document parent and path must not be null");

        Element e = parent;
        for (int i = 0; i < path.length; i++) {
            Element newEl = getChildElementByTagName(e, path[i]);
            if (newEl == null) {
                newEl = doc.createElement(path[i]);
                e.appendChild(newEl);
            }
            e = newEl;
        }
        return e;
    }

    /**
     * Returns the child element with the specified tagName for the specified parent element
     * @param parent
     * @param tagName
     * @return
     */
    public static Element getChildElementByTagName(Element parent, String tagName) {
        if (parent == null || tagName == null)
            return null;

        NodeList nodes = parent.getChildNodes();
        Node node;
        int len = nodes.getLength();
        for (int i = 0; i < len; i++) {
            node = nodes.item(i);
            if (node.getNodeType() == Node.ELEMENT_NODE && ((Element) node).getNodeName().equals(tagName))
                return (Element) node;
        }

        return null;
    }
}