Java XML Attribute from Node parseAttributesTag(Node n)

Description

This method parse an Attributes tag, DTD for Attribute is as follows.

License

Open Source License

Parameter

Parameter	Description
n	Node

Return

Set Set of the attribute names

Declaration

public static Set parseAttributesTag(Node n) 

Method Source Code

//package com.java2s;
/**/*from   w  w w.j a  va2s  . c  om*/
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 2006 Sun Microsystems Inc. All Rights Reserved
 *
 * The contents of this file are subject to the terms
 * of the Common Development and Distribution License
 * (the License). You may not use this file except in
 * compliance with the License.
 *
 * You can obtain a copy of the License at
 * https://opensso.dev.java.net/public/CDDLv1.0.html or
 * opensso/legal/CDDLv1.0.txt
 * See the License for the specific language governing
 * permission and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL
 * Header Notice in each file and include the License file
 * at opensso/legal/CDDLv1.0.txt.
 * If applicable, add the following below the CDDL Header,
 * with the fields enclosed by brackets [] replaced by
 * your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 *
 * $Id: XMLUtils.java,v 1.15 2009-10-19 18:19:20 asyhuang Exp $
 *
 */

import java.util.HashSet;

import java.util.Set;

import org.w3c.dom.Element;

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

public class Main {
    /**
     * This method parse an Attributes tag, DTD for Attribute is as follows.
     * 
     * <pre>
     *  &lt; !-- This DTD defines the DPro Attribute tag.
     *    Unique Declaration name for DOCTYPE tag:
     *    &quot;Directory Pro 5.0 Attributes DTD&quot;
     *  --&gt;
     *  &lt; !ELEMENT Attributes (Attribute)+&gt;
     *  &lt; !ELEMENT Attribute EMPTY&gt;
     *  &lt; !ATTLIST Attribute
     *       name    NMTOKEN         #REQUIRED
     *  &gt;
     * </pre>
     * 
     * @param n
     *            Node
     * @return Set Set of the attribute names
     */
    public static Set parseAttributesTag(Node n) {
        // get Attribute node list
        NodeList attributes = n.getChildNodes();
        final int numAttributes = attributes.getLength();

        if (numAttributes == 0) {
            return null;
        }

        Set set = new HashSet();
        for (int l = 0; l < numAttributes; l++) {
            // get next attribute
            Node attr = attributes.item(l);
            if ((attr.getNodeType() != Node.ELEMENT_NODE) && !attr.getNodeName().equals("Attribute")) {
                // need error handling
                continue;
            }

            set.add(((Element) attr).getAttribute("name"));
        }
        return set;
    }

    public static Set getChildNodes(Node parentNode, String childName) {
        Set retVal = new HashSet();
        NodeList children = parentNode.getChildNodes();
        for (int i = 0; i < children.getLength(); i++) {
            Node node = children.item(i);
            if (node.getNodeName().equalsIgnoreCase(childName)) {
                retVal.add(node);
            }
        }
        return (retVal);
    }
}

Related

1. hasAttribByName(Element node, String name)
2. parseAttribute(Node lnNode, String attributeName)
3. parseAttribute(NodeList abtList)
4. parseAttributes(Node n)
5. parseAttributes(Node node)
6. xmlGetAttribute(Node node, String attrname)
7. xmlGetAttribute2(Node node, String attrname)