Replace the current XML root element. - Java XML

Java examples for XML:DOM Element

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Description

Replace the current XML root element.

Demo Code

/**/*from   w  ww  . j  a va2s  . c  o m*/
 *  Copyright 2012 Sven Ewald
 *
 *  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.
 */
//package com.java2s;

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

import org.w3c.dom.Node;

public class Main {
    /**
     * Replace the current root element. If element is null, the current root element will be
     * removed.
     *
     * @param document
     * @param element
     */
    public static void setDocumentElement(final Document document,
            final Element element) {
        Element documentElement = document.getDocumentElement();
        if (documentElement != null) {
            document.removeChild(documentElement);
        }
        if (element != null) {
            if (element.getOwnerDocument().equals(document)) {
                document.appendChild(element);
                return;
            }
            Node node = document.adoptNode(element);
            document.appendChild(node);
        }
    }
}

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