Java XML Node Path createAndAppendNode(Node root, String path)

Description

create And Append Node

License

Apache License

Declaration

public static Node createAndAppendNode(Node root, String path) 

Method Source Code

//package com.java2s;
/*//from w ww.  jav a  2 s  .  com
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

import org.w3c.dom.Element;

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

public class Main {
    public static Node createAndAppendNode(Node root, String path) {
        if (path == null)
            return root;

        Element node = null;
        if (path.contains("/")) // check if path is complex
        {
            String[] steps = path.split("/");
            Node upper = root;
            Node lower = null;
            for (int i = 0; i < steps.length; i++) {
                // check if element exists
                lower = ifNodeExists(upper, steps[i]);
                if (lower == null) {
                    lower = upper.getOwnerDocument().createElement(steps[i]);
                    upper.appendChild(lower);
                }
                upper = lower;
            }
            return lower;
        }
        // simple path:
        node = root.getOwnerDocument().createElement(path);
        root.appendChild(node);
        return node;
    }

    private static Node ifNodeExists(Node upper, String path) {
        NodeList list = upper.getChildNodes();
        for (int i = 0; i < list.getLength(); i++) {
            if (list.item(i).getNodeName().equals(path))
                return list.item(i);
        }
        return null;
    }
}

Related

1. addElementPath(Node element, String path)
2. extractNodes(Node node, String path)
3. extractPath(Node node, String[] path)
4. extractPaths(Node node, String[] path)
5. getCompletePathForANode(Node objNode)