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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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 * elects to include this software in this distribution under the [CDDL or GPL
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 * 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.ejb.deployment.node.runtime;

import java.util.ArrayList;
import java.util.Iterator;

import com.sun.enterprise.deployment.EjbDescriptor;
import com.sun.enterprise.deployment.MethodDescriptor;
import com.sun.enterprise.deployment.node.DeploymentDescriptorNode;
import com.sun.enterprise.deployment.node.MethodNode;
import com.sun.enterprise.deployment.node.XMLElement;
import com.sun.enterprise.deployment.xml.RuntimeTagNames;
import org.glassfish.ejb.deployment.descriptor.runtime.PrefetchDisabledDescriptor;
import org.w3c.dom.Node;

/**
 * This node handles the prefetch-disabled runtime deployment descriptors 
 *
 */
public class PrefetchDisabledNode extends DeploymentDescriptorNode {

    private PrefetchDisabledDescriptor descriptor;

    public PrefetchDisabledNode() {
        registerElementHandler(new XMLElement(RuntimeTagNames.QUERY_METHOD), MethodNode.class);
    }

    @Override
    public PrefetchDisabledDescriptor getDescriptor() {
        if (descriptor==null) {
            descriptor = new PrefetchDisabledDescriptor();
            Object parentDesc = getParentNode().getDescriptor();
            if (parentDesc instanceof EjbDescriptor) {
                descriptor.setEjbDescriptor((EjbDescriptor)parentDesc);
            }
        }
        return descriptor;
    }

    @Override
    public void addDescriptor(Object newDescriptor) {
        if (newDescriptor instanceof MethodDescriptor) {
            descriptor.addMethodDescriptor(
                (MethodDescriptor) newDescriptor);
        }
    }

    @Override
    public Node writeDescriptor(Node parent, String nodeName, 
        PrefetchDisabledDescriptor prefetchDisabledDescriptor) {    
	Node prefetchDisabledNode = super.writeDescriptor(parent, nodeName, 
            prefetchDisabledDescriptor);
        ArrayList methodDescs = 
            prefetchDisabledDescriptor.getConvertedMethodDescs();
        if (!methodDescs.isEmpty()) {
            MethodNode methodNode = new MethodNode();
            for (Iterator methodIterator = methodDescs.iterator();
                methodIterator.hasNext();) {
                MethodDescriptor methodDesc = 
                    (MethodDescriptor) methodIterator.next();
                methodNode.writeQueryMethodDescriptor(prefetchDisabledNode, 
                    RuntimeTagNames.QUERY_METHOD, methodDesc);
            }
        }

	return prefetchDisabledNode;
    }
}