list a set of XML node that match a specific filter. - Java XML

Java examples for XML:XML Node

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Description

list a set of XML node that match a specific filter.

Demo Code

/*/*from  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 java.util.Vector;
import org.w3c.dom.Attr;
import org.w3c.dom.CDATASection;
import org.w3c.dom.Comment;
import org.w3c.dom.DOMException;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.NamedNodeMap;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.w3c.dom.ProcessingInstruction;
import org.w3c.dom.Text;

public class Main{
    /**
     * list a set of node that match a specific filter. The list can be made
     * recursively or not.
     * @param   parent  the parent node to search from
     * @param   filter  the filter that children should match.
     * @param   recurse <tt>true</tt> if you want the list to be made recursively
     *                  otherwise <tt>false</tt>.
     * @return the node list that matches the filter.
     */
    public static NodeList listChildNodes(Node parent, NodeFilter filter,
            boolean recurse) {
        NodeListImpl matches = new NodeListImpl();
        NodeList children = parent.getChildNodes();
        if (children != null) {
            final int len = children.getLength();
            for (int i = 0; i < len; i++) {
                Node child = children.item(i);
                if (filter.accept(child)) {
                    matches.addElement(child);
                }
                if (recurse) {
                    NodeList recmatches = listChildNodes(child, filter,
                            recurse);
                    final int reclength = recmatches.getLength();
                    for (int j = 0; j < reclength; j++) {
                        matches.addElement(recmatches.item(i));
                    }
                }
            }
        }
        return matches;
    }
}

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