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/*
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 * 
 * // Copyright (c) 1998, 2007, Oracle. All rights reserved.
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 *
 * 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.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.
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 * 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 oracle.toplink.essentials.internal.ejb.cmp3.xml.queries;

import java.util.List;
import java.util.ArrayList;

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

import oracle.toplink.essentials.internal.ejb.cmp3.xml.XMLHelper;
import oracle.toplink.essentials.internal.ejb.cmp3.xml.XMLConstants;

import oracle.toplink.essentials.internal.ejb.cmp3.metadata.queries.MetadataEntityResult;
import oracle.toplink.essentials.internal.ejb.cmp3.metadata.queries.MetadataSQLResultSetMapping;

/**
 * Object to hold onto an XML sql result set mapping metadata.
 * 
 * @author Guy Pelletier
 * @since TopLink EJB 3.0 Reference Implementation
 */
public class XMLSQLResultSetMapping extends MetadataSQLResultSetMapping {
    protected Node m_node;
    protected XMLHelper m_helper;

    /**
     * INTERNAL:
     */
    public XMLSQLResultSetMapping(Node node, XMLHelper helper) {
        m_node = node;
        m_helper = helper;
    }
    
   /**
     * INTERNAL:
     */
    public List getEntityResults() {
        if (m_entityResults == null) {
            m_entityResults = new ArrayList();
            NodeList entityResultNodes = m_helper.getNodes(m_node, XMLConstants.ENTITY_RESULT);
            
            if (entityResultNodes != null) {
                for (int i = 0; i < entityResultNodes.getLength(); i++) {
                    m_entityResults.add(new XMLEntityResult(entityResultNodes.item(i), m_helper));
                }
            }
        }
        
        return m_entityResults;
    }
    
    /**
     * INTERNAL:
     */
    public List getColumnResults() {
        if (m_columnResults == null) {
            m_columnResults = new ArrayList();    
            NodeList columnResultList = m_helper.getNodes(m_node, XMLConstants.COLUMN_RESULT);
            
            if (columnResultList != null) {
                for (int i = 0; i < columnResultList.getLength(); i++) {
                    m_columnResults.add(m_helper.getNodeValue(columnResultList.item(i), XMLConstants.ATT_NAME));
                }
            }
        }
        
        return m_columnResults;
    }
    
    /**
     * INTERNAL:
     */
    public String getName() {
        return m_helper.getNodeValue(m_node, XMLConstants.ATT_NAME);
    }
}




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