/*

 * 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

 * or visit www.oracle.com if you need additional information or have any

 * questions.

 */

/*

 * Licensed Materials - Property of IBM

 * RMI-IIOP v1.0

 * Copyright IBM Corp. 1998 1999  All Rights Reserved

 *

 */

package com.sun.corba.se.impl.javax.rmi.CORBA;

import java.io.IOException;

import java.rmi.RemoteException;

import javax.rmi.CORBA.Tie;

import org.omg.CORBA.ORB;

import org.omg.CORBA.SystemException;

import org.omg.CORBA.BAD_OPERATION;

import org.omg.CORBA.BAD_INV_ORDER;

import org.omg.CORBA.portable.Delegate;

import org.omg.CORBA.portable.OutputStream;

import org.omg.CORBA.portable.InputStream;

import com.sun.corba.se.spi.presentation.rmi.StubAdapter;

import com.sun.corba.se.spi.logging.CORBALogDomains ;

import com.sun.corba.se.impl.util.Utility;

import com.sun.corba.se.impl.ior.StubIORImpl ;

import com.sun.corba.se.impl.presentation.rmi.StubConnectImpl ;

import com.sun.corba.se.impl.logging.UtilSystemException ;

/**

 * Base class from which all static RMI-IIOP stubs must inherit.

 */

public class StubDelegateImpl implements javax.rmi.CORBA.StubDelegate

{

    static UtilSystemException wrapper = UtilSystemException.get(

        CORBALogDomains.RMIIIOP ) ;

    private StubIORImpl ior ;

    public StubIORImpl getIOR()

    {

        return ior ;

    }

    public StubDelegateImpl()

    {

        ior = null ;

    }

    /**

     * Sets the IOR components if not already set.

     */

    private void init (javax.rmi.CORBA.Stub self)

    {

        // If the Stub is not connected to an ORB, BAD_OPERATION exception

        // will be raised by the code below.

        if (ior == null)

            ior = new StubIORImpl( self ) ;

    }

    /**

     * Returns a hash code value for the object which is the same for all stubs

     * that represent the same remote object.

     * @return the hash code value.

     */

    public int hashCode(javax.rmi.CORBA.Stub self)

    {

        init(self);

        return ior.hashCode() ;

    }

    /**

     * Compares two stubs for equality. Returns <code>true</code> when used to compare stubs

     * that represent the same remote object, and <code>false</code> otherwise.

     * @param obj the reference object with which to compare.

     * @return <code>true</code> if this object is the same as the <code>obj</code>

     *          argument; <code>false</code> otherwise.

     */

    public boolean equals(javax.rmi.CORBA.Stub self, java.lang.Object obj)

    {

        if (self == obj) {

            return true;

        }

        if (!(obj instanceof javax.rmi.CORBA.Stub)) {

            return false;

        }

        // no need to call init() because of calls to hashCode() below

        javax.rmi.CORBA.Stub other = (javax.rmi.CORBA.Stub) obj;

        if (other.hashCode() != self.hashCode()) {

            return false;

        }

        // hashCodes being the same does not mean equality. The stubs still

        // could be pointing to different IORs. So, do a literal comparison.

        // Apparently the ONLY way to do this (other than using private

        // reflection)  toString, because it is not possible to directly

        // access the StubDelegateImpl from the Stub.

        return self.toString().equals( other.toString() ) ;

    }

    public boolean equals( Object obj )

    {

        if (this == obj)

            return true ;

        if (!(obj instanceof StubDelegateImpl))

            return false ;

        StubDelegateImpl other = (StubDelegateImpl)obj ;

        if (ior == null)

            return ior == other.ior ;

        else

            return ior.equals( other.ior ) ;

    }

    /**

     * Returns a string representation of this stub. Returns the same string

     * for all stubs that represent the same remote object.

     * @return a string representation of this stub.

     */

    public String toString(javax.rmi.CORBA.Stub self)

    {

        if (ior == null)

            return null ;

        else

            return ior.toString() ;

    }

    /**

     * Connects this stub to an ORB. Required after the stub is deserialized

     * but not after it is demarshalled by an ORB stream. If an unconnected

     * stub is passed to an ORB stream for marshalling, it is implicitly

     * connected to that ORB. Application code should not call this method

     * directly, but should call the portable wrapper method

     * {@link javax.rmi.PortableRemoteObject#connect}.

     * @param orb the ORB to connect to.

     * @exception RemoteException if the stub is already connected to a different

     * ORB, or if the stub does not represent an exported remote or local object.

     */

    public void connect(javax.rmi.CORBA.Stub self, ORB orb)

        throws RemoteException

    {

        ior = StubConnectImpl.connect( ior, self, self, orb ) ;

    }

    /**

     * Serialization method to restore the IOR state.

     */

    public void readObject(javax.rmi.CORBA.Stub self,

        java.io.ObjectInputStream stream) throws IOException, ClassNotFoundException

    {

        if (ior == null)

            ior = new StubIORImpl() ;

        ior.doRead( stream ) ;

    }

    /**

     * Serialization method to save the IOR state.

     * @serialData The length of the IOR type ID (int), followed by the IOR type ID

     * (byte array encoded using ISO8859-1), followed by the number of IOR profiles

     * (int), followed by the IOR profiles.  Each IOR profile is written as a

     * profile tag (int), followed by the length of the profile data (int), followed

     * by the profile data (byte array).

     */

    public void writeObject(javax.rmi.CORBA.Stub self,

        java.io.ObjectOutputStream stream) throws IOException

    {

        init(self);

        ior.doWrite( stream ) ;

    }

}