Java XML Child Element Create getOrCreateChildNode(IIOMetadataNode parentNode, String name)

Description

Gets the named child node, or creates and attaches it.

License

Apache License

Parameter

Parameter	Description
parentNode	the parent node
name	name of the child node

Return

the existing or just created child node

Declaration

private static IIOMetadataNode getOrCreateChildNode(IIOMetadataNode parentNode, String name) 

Method Source Code

//package com.java2s;
/*/*w  w  w .  j ava  2s .  c  o  m*/
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You 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 javax.imageio.metadata.IIOMetadataNode;

import org.w3c.dom.NodeList;

public class Main {
    /**
     * Gets the named child node, or creates and attaches it.
     *
     * @param parentNode the parent node
     * @param name name of the child node
     *
     * @return the existing or just created child node
     */
    private static IIOMetadataNode getOrCreateChildNode(IIOMetadataNode parentNode, String name) {
        NodeList nodeList = parentNode.getElementsByTagName(name);
        if (nodeList != null && nodeList.getLength() > 0) {
            return (IIOMetadataNode) nodeList.item(0);
        }
        IIOMetadataNode childNode = new IIOMetadataNode(name);
        parentNode.appendChild(childNode);
        return childNode;
    }
}

Related

1. createChildElement(Element parentElement, String strTagName)
2. createChildElement(final String tagName, final Node parent, final Document document)
3. createChildElement(String tagName, Element parentElement)
4. createTextChild(Node elem, String elemName, Boolean text)
5. getChildElementByChain(Element element, String[] chain, boolean create)
6. getOrCreateFirstTextChild(Element node)
7. hasActivityChildNodeWithCreateInstanceSet(Node node)