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/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2012 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
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 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
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 * and therefore, elected the GPL Version 2 license, then the option applies
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 */

package org.glassfish.web.deployment.node;

import java.util.Map;

import com.sun.enterprise.deployment.node.DeploymentDescriptorNode;
import com.sun.enterprise.deployment.node.DescriptorFactory;
import com.sun.enterprise.deployment.node.XMLElement;
import org.glassfish.web.deployment.descriptor.OrderingOrderingDescriptor;
import org.glassfish.web.deployment.xml.WebTagNames;
import org.w3c.dom.Node;
import org.xml.sax.Attributes;

/**
 * This node is responsible for handling the ordering-ordering xml tree.
 * This is for "before" and "after" element.
 *
 * @author  Shing Wai Chan
 * @version 
 */
public class OrderingOrderingNode extends DeploymentDescriptorNode {
       
    protected OrderingOrderingDescriptor descriptor = null;

    /**
     * @return the descriptor instance to associate with this XMLNode
     */
    @Override
    public OrderingOrderingDescriptor getDescriptor() {
        if (descriptor==null) {
            descriptor = new OrderingOrderingDescriptor();
        }
        return descriptor;
    }  

    /**
     * all sub-implementation of this class can use a dispatch table to map xml element to
     * method name on the descriptor class for setting the element value. 
     *  
     * @return the map with the element name as a key, the setter method as a value
     */
    @Override
    protected Map getDispatchTable() {
        Map table = super.getDispatchTable();
        table.put(WebTagNames.COMMON_NAME, "addName");
        return table;
    }

    /**
     * SAX Parser API implementation, we don't really care for now.
     */
    @Override
    public void startElement(XMLElement element, Attributes attributes) {
        super.startElement(element, attributes);

        if (WebTagNames.OTHERS.equals(element.getQName())) {
            descriptor.addOthers();
        }
    }

    /**
     * write the descriptor class to a DOM tree and return it
     *
     * @param parent node in the DOM tree 
     * @param node name for the root element of this xml fragment      
     * @param the descriptor to write
     * @return the DOM tree top node
     */
    @Override
    public Node writeDescriptor(Node parent, String nodeName, OrderingOrderingDescriptor descriptor) {
        Node myNode = appendChild(parent, nodeName);
        for (String name : descriptor.getNames()) {
            appendTextChild(myNode, WebTagNames.COMMON_NAME, name);
        }
        if (descriptor.containsOthers()) {
            appendChild(myNode, WebTagNames.OTHERS);
        }
        return myNode;
    }
}