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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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 */

package org.glassfish.ejb.deployment.node;

import java.util.Map;

import com.sun.enterprise.deployment.node.DeploymentDescriptorNode;
import com.sun.enterprise.deployment.node.XMLElement;
import org.glassfish.ejb.deployment.EjbTagNames;
import org.glassfish.ejb.deployment.descriptor.RelationRoleDescriptor;
import org.glassfish.ejb.deployment.descriptor.RelationshipDescriptor;
import org.w3c.dom.Node;

/**
 *
 * @author  dochez
 * @version 
 */
public class EjbRelationNode extends DeploymentDescriptorNode {

    private RelationRoleDescriptor source;
    private RelationRoleDescriptor sink;
    private RelationshipDescriptor descriptor;

    public EjbRelationNode() {
       super();
       registerElementHandler(new XMLElement(EjbTagNames.EJB_RELATIONSHIP_ROLE),
                                                            EjbRelationshipRoleNode.class);                   
    }

    @Override
    public RelationshipDescriptor getDescriptor() {
        if (descriptor==null) descriptor = new RelationshipDescriptor();
        return descriptor;
    }

    @Override
    public void addDescriptor(Object newDescriptor) {
        if (newDescriptor instanceof RelationRoleDescriptor) {
            if (source==null) {
                source = (RelationRoleDescriptor) newDescriptor;
            } else {
                sink = (RelationRoleDescriptor) newDescriptor;
                
                descriptor.setSource(source);
                source.setPartner(sink);
                source.setRelationshipDescriptor(descriptor);
                descriptor.setSink(sink);
                sink.setPartner(source);
                sink.setRelationshipDescriptor(descriptor);

                if ( source.getCMRField() != null && sink.getCMRField() != null )
                    descriptor.setIsBidirectional(true);
                else
                    descriptor.setIsBidirectional(false);                
            }
        }
    }

    @Override
    protected Map getDispatchTable() {
        // no need to be synchronized for now
        Map table = super.getDispatchTable();
        table.put(EjbTagNames.EJB_RELATION_NAME, "setName");
        return table;
    }

    @Override
    public Node writeDescriptor(Node parent, String nodeName, RelationshipDescriptor descriptor) {
        Node ejbRelationNode = super.writeDescriptor(parent, nodeName, descriptor);        
        writeLocalizedDescriptions(ejbRelationNode, descriptor);
        appendTextChild(ejbRelationNode, EjbTagNames.EJB_RELATION_NAME, descriptor.getName());     
        EjbRelationshipRoleNode roleNode = new EjbRelationshipRoleNode();
        roleNode.writeDescriptor(ejbRelationNode, EjbTagNames.EJB_RELATIONSHIP_ROLE, descriptor.getSource());
        roleNode.writeDescriptor(ejbRelationNode, EjbTagNames.EJB_RELATIONSHIP_ROLE, descriptor.getSink());
        return ejbRelationNode;
    }
}