Java XML First Child Element getFirstChildElementNS(Node parent, String[][] elemNames)

Description

Finds and returns the first child node with the given qualified name.

License

Apache License

Declaration

public static Element getFirstChildElementNS(Node parent, String[][] elemNames) 

Method Source Code

//package com.java2s;
/*/*  w ww. j  a  v  a2 s  .  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 org.w3c.dom.*;

public class Main {
    /**
     * Finds and returns the first child node with the given qualified name.
     */
    public static Element getFirstChildElementNS(Node parent, String uri, String localpart) {

        // search for node
        Node child = parent.getFirstChild();
        while (child != null) {
            if (child.getNodeType() == Node.ELEMENT_NODE) {
                String childURI = child.getNamespaceURI();
                if (childURI != null && childURI.equals(uri) && child.getLocalName().equals(localpart)) {
                    return (Element) child;
                }
            }
            child = child.getNextSibling();
        }

        // not found
        return null;

    }

    /**
     * Finds and returns the first child node with the given qualified name.
     */
    public static Element getFirstChildElementNS(Node parent, String[][] elemNames) {

        // search for node
        Node child = parent.getFirstChild();
        while (child != null) {
            if (child.getNodeType() == Node.ELEMENT_NODE) {
                for (int i = 0; i < elemNames.length; i++) {
                    String uri = child.getNamespaceURI();
                    if (uri != null && uri.equals(elemNames[i][0])
                            && child.getLocalName().equals(elemNames[i][1])) {
                        return (Element) child;
                    }
                }
            }
            child = child.getNextSibling();
        }

        // not found
        return null;

    }

    public static String getNamespaceURI(Node node) {
        return node.getNamespaceURI();
    }

    /**
     * returns local name of this element if not null, otherwise
     * returns the name of the node
     */
    public static String getLocalName(Node node) {
        String name = node.getLocalName();
        return (name != null) ? name : node.getNodeName();
    }
}

Related

1. getFirstChildElementCaseInsensitive(Element root, String elementName)
2. getFirstChildElementInternal(final Node node, final boolean useNamespaces, final String namespaceURI, final String localName)
3. getFirstChildElementNode(Node node)
4. getFirstChildElementNS(Element elm, String tns, String localName)
5. getFirstChildElementNS(Node parent, String uri)
6. getFirstChildElementOfName(@Nonnull final Node aStartNode, @Nullable final String sName)
7. getFirstChildElementsByTagName( Node contextNode, String elementName)
8. getFirstChildElementsByTagName(Node contextNode, String elementName)
9. getFirstChildElementWithName(Element elem, String name)