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 * Portions Copyright Apache Software Foundation.
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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
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package org.apache.naming;

import java.util.Hashtable;
import javax.naming.Reference;
import javax.naming.Context;
import javax.naming.StringRefAddr;

/**
 * Represents a reference address to a resource.
 *
 * @author Remy Maucherat
 * @version $Revision: 1.3 $ $Date: 2007/05/05 05:32:59 $
 */

public class ResourceLinkRef
    extends Reference {


    // -------------------------------------------------------------- Constants


    /**
     * Default factory for this reference.
     */
    public static final String DEFAULT_FACTORY = 
        org.apache.naming.factory.Constants.DEFAULT_RESOURCE_LINK_FACTORY;


    /**
     * Description address type.
     */
    public static final String GLOBALNAME = "globalName";


    // ----------------------------------------------------------- Constructors


    /**
     * ResourceLink Reference.
     * 
     * @param resourceClass Resource class
     * @param globalName Global name
     */
    public ResourceLinkRef(String resourceClass, String globalName) {
        this(resourceClass, globalName, null, null);
    }


    /**
     * ResourceLink Reference.
     * 
     * @param resourceClass Resource class
     * @param globalName Global name
     */
    public ResourceLinkRef(String resourceClass, String globalName, 
                           String factory, String factoryLocation) {
        super(resourceClass, factory, factoryLocation);
        StringRefAddr refAddr = null;
        if (globalName != null) {
            refAddr = new StringRefAddr(GLOBALNAME, globalName);
            add(refAddr);
        }
    }


    // ----------------------------------------------------- Instance Variables


    // ------------------------------------------------------ Reference Methods


    /**
     * Retrieves the class name of the factory of the object to which this 
     * reference refers.
     */
    public String getFactoryClassName() {
        String factory = super.getFactoryClassName();
        if (factory != null) {
            return factory;
        } else {
            factory = System.getProperty(Context.OBJECT_FACTORIES);
            if (factory != null) {
                return null;
            } else {
                return DEFAULT_FACTORY;
            }
        }
    }


    // ------------------------------------------------------------- Properties


}