RemoteToCorba.java

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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * 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).
 *
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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 {@code orig} 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
            // 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);
        }
        return null; // pass and let next state factory try
    }
}