Utils.java Source code

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Here is the source code for Utils.java

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/**
 * 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.xml.namespace.QName;

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

/**
 * Few simple utils to read DOM. This is originally from the Jakarta Commons
 * Modeler.
 * 
 * @author Costin Manolache
 */
public class Utils {
    /**
     * Return the first element child with the specified qualified name.
     * 
     * @param parent
     * @param q
     * @return
     */
    public static Element getFirstChildWithName(Element parent, QName q) {
        String ns = q.getNamespaceURI();
        String lp = q.getLocalPart();
        return getFirstChildWithName(parent, ns, lp);
    }

    /**
     * Return the first element child with the specified qualified name.
     * 
     * @param parent
     * @param ns
     * @param lp
     * @return
     */
    public static Element getFirstChildWithName(Element parent, String ns, String lp) {
        for (Node n = parent.getFirstChild(); n != null; n = n.getNextSibling()) {
            if (n instanceof Element) {
                Element e = (Element) n;
                String ens = (e.getNamespaceURI() == null) ? "" : e.getNamespaceURI();
                if (ns.equals(ens) && lp.equals(e.getLocalName())) {
                    return e;
                }
            }
        }
        return null;
    }
}