/*

 * Copyright (c) 1999, 2004, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.  Oracle designates this

 * particular file as subject to the "Classpath" exception as provided

 * by Oracle in the LICENSE file that accompanied this code.

 *

 * This code is distributed in the hope that it will be useful, but WITHOUT

 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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package com.sun.jndi.cosnaming;

import javax.naming.*;

import javax.naming.spi.StateFactory;

import java.util.Hashtable;

import org.omg.CORBA.ORB;

import java.rmi.Remote;

import java.rmi.server.ExportException;

import com.sun.jndi.toolkit.corba.CorbaUtils;  // for RMI-IIOP

/**

  * StateFactory that turns java.rmi.Remote objects to org.omg.CORBA.Object.

  *

  * @author Rosanna Lee

  */

public class RemoteToCorba implements StateFactory {

    public RemoteToCorba() {

    }

    /**

     * Returns the CORBA object for a Remote object.

     * If input is not a Remote object, or if Remote object uses JRMP, return null.

     * If the RMI-IIOP library is not available, throw ConfigurationException.

     *

     * @param orig The object to turn into a CORBA object. If not Remote,

     *             or if is a JRMP stub or impl, return null.

     * @param name Ignored

     * @param ctx The non-null CNCtx whose ORB to use.

     * @param env Ignored

     * @return The CORBA object for <tt>orig</tt> or null.

     * @exception ConfigurationException If the CORBA object cannot be obtained

     *    due to configuration problems, for instance, if RMI-IIOP not available.

     * @exception NamingException If some other problem prevented a CORBA

     *    object from being obtained from the Remote object.

     */

    public Object getStateToBind(Object orig, Name name, Context ctx,

        Hashtable<?,?> env) throws NamingException {

        if (orig instanceof org.omg.CORBA.Object) {

            // Already a CORBA object, just use it

            return null;

        }

        if (orig instanceof Remote) {

            // Turn remote object into org.omg.CORBA.Object

            try {

                // Returns null if JRMP; let next factory try

                // CNCtx will eventually throw IllegalArgumentException if

                // no CORBA object gotten

                return

                    CorbaUtils.remoteToCorba((Remote)orig, ((CNCtx)ctx)._orb);

            } catch (ClassNotFoundException e) {

                // RMI-IIOP library not available

                throw new ConfigurationException(

                    "javax.rmi packages not available");

            }

        }

        return null; // pass and let next state factory try

    }

}