Java XML First Child Element getFirstChildByRegex(Element ele, String pattern)

Description

get First Child By Regex

License

Apache License

Declaration

public static Element getFirstChildByRegex(Element ele, String pattern) 

Method Source Code

//package com.java2s;
/* 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.//w  w  w. j a v a  2s.  co m
 */

import org.w3c.dom.Element;

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

public class Main {
    public static Element getFirstChildByRegex(Element ele, String pattern) {
        NodeList nl = ele.getChildNodes();
        for (int i = 0; i < nl.getLength(); i++) {
            Node node = nl.item(i);
            if (node instanceof Element && getLocalName(node).matches(pattern)) {
                return (Element) node;
            }
        }
        return null;
    }

    public static String getLocalName(Node node) {
        String name = node.getLocalName();
        return name != null ? name : node.getNodeName();
    }
}

Related

1. getFirstChild(Node node, String childName)
2. getFirstChild(Node parent)
3. getFirstChildByName(Element parent, String name)
4. getFirstChildByNodeName(Node parent, String nodeName)
5. getFirstChildByNS(Element node, String ns, String localName)
6. getFirstChildByTagName(Element parent, String tagName)
7. getFirstChildByTagName(Node parent, String tagName)
8. getFirstChildByTagNameNS(Node contextNode, String nsuri, String tag)
9. getFirstChildByType(Element element, int nodeType)