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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 * 
 * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
 * 
 * The contents of this file are subject to the terms of either the GNU
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 * 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.html
 * or glassfish/bootstrap/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 glassfish/bootstrap/legal/LICENSE.txt.
 * Sun designates this particular file as subject to the "Classpath" exception
 * as provided by Sun in the GPL Version 2 section of the License file that
 * accompanied this code.  If applicable, add the following below the License
 * Header, with the fields enclosed by brackets [] replaced by your own
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package com.sun.enterprise.deployment.node.runtime;

import java.util.ArrayList;
import java.util.Iterator;
import org.w3c.dom.Node;

import com.sun.enterprise.deployment.node.XMLElement;
import com.sun.enterprise.deployment.node.DeploymentDescriptorNode;
import com.sun.enterprise.deployment.node.MethodNode;
import com.sun.enterprise.deployment.runtime.CheckpointAtEndOfMethodDescriptor;
import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.deployment.EjbDescriptor;
import com.sun.enterprise.deployment.xml.RuntimeTagNames;

/**
 * This node handles the checkpoint-at-end-of-method runtime deployment descriptors 
 *
 */
public class CheckpointAtEndOfMethodNode extends DeploymentDescriptorNode {

    protected CheckpointAtEndOfMethodDescriptor descriptor=null;
    
    /** Creates new CheckpointAtEndOfMethodNode */
    public CheckpointAtEndOfMethodNode() {
        registerElementHandler(new XMLElement(RuntimeTagNames.METHOD), MethodNode.class);   
    }
    
   /**
    * @return the descriptor instance to associate with this XMLNode
    */    
    public Object getDescriptor() {
        if (descriptor==null) {
            descriptor = new CheckpointAtEndOfMethodDescriptor();
            Object parentDesc = getParentNode().getDescriptor();
            if (parentDesc instanceof EjbDescriptor) {
                descriptor.setEjbDescriptor((EjbDescriptor)parentDesc);
            }
        }
        return descriptor;
    }
    

    /**
     * Adds a new DOL descriptor instance to the descriptor instance associated
     * with this XMLNode
     *
     * @param descriptor the new descriptor
     */
    public void addDescriptor(Object newDescriptor) {
        if (newDescriptor instanceof MethodDescriptor) {
            descriptor.addMethodDescriptor(
                (MethodDescriptor) newDescriptor);
        }
    }

    /**
     * write the descriptor class to a DOM tree and return it
     *
     * @param parent node for the DOM tree
     * @param node name for the descriptor
     * @param the descriptor to write
     * @return the DOM tree top node
     */    
    public Node writeDescriptor(Node parent, String nodeName, 
        CheckpointAtEndOfMethodDescriptor checkpointMethodDescriptor) {    
	Node checkpointMethodNode = super.writeDescriptor(parent, nodeName, 
            checkpointMethodDescriptor);
        ArrayList methodDescs = checkpointMethodDescriptor.getConvertedMethodDescs();
        if (!methodDescs.isEmpty()) {
            MethodNode methodNode = new MethodNode();
            for (Iterator methodIterator = methodDescs.iterator();
                methodIterator.hasNext();) {
                MethodDescriptor methodDesc = 
                    (MethodDescriptor) methodIterator.next();
                // do not write out ejb-name element for the method
                methodNode.writeDescriptor(checkpointMethodNode, 
                    RuntimeTagNames.METHOD, methodDesc, null);
            }
        }

	return checkpointMethodNode;
    }
}
