001/* ObjectImpl.java --
002   Copyright (C) 2005 Free Software Foundation, Inc.
003
004This file is part of GNU Classpath.
005
006GNU Classpath is free software; you can redistribute it and/or modify
007it under the terms of the GNU General Public License as published by
008the Free Software Foundation; either version 2, or (at your option)
009any later version.
010
011GNU Classpath is distributed in the hope that it will be useful, but
012WITHOUT ANY WARRANTY; without even the implied warranty of
013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
014General Public License for more details.
015
016You should have received a copy of the GNU General Public License
017along with GNU Classpath; see the file COPYING.  If not, write to the
018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
01902110-1301 USA.
020
021Linking this library statically or dynamically with other modules is
022making a combined work based on this library.  Thus, the terms and
023conditions of the GNU General Public License cover the whole
024combination.
025
026As a special exception, the copyright holders of this library give you
027permission to link this library with independent modules to produce an
028executable, regardless of the license terms of these independent
029modules, and to copy and distribute the resulting executable under
030terms of your choice, provided that you also meet, for each linked
031independent module, the terms and conditions of the license of that
032module.  An independent module is a module which is not derived from
033or based on this library.  If you modify this library, you may extend
034this exception to your version of the library, but you are not
035obligated to do so.  If you do not wish to do so, delete this
036exception statement from your version. */
037
038
039package org.omg.CORBA_2_3.portable;
040
041import org.omg.CORBA.BAD_OPERATION;
042
043/**
044 * Extends the previous version of the CORBA object by one additional method,
045 * defined in CORBA 2_3 . See ancestor for details about the CORBA object.
046 *
047 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
048 */
049public abstract class ObjectImpl
050  extends org.omg.CORBA.portable.ObjectImpl
051{
052  /**
053   * Returns the codebase for the provided object reference.
054   * A codebase is a location information (for instance, URL), specifying,
055   * where the missing parts of the object code can be downloaded. This
056   * is important for the value type objects that handle they method calls
057   * locally and hence must have the local copy of the implementing code.
058   *
059   * This implementation expects that the object delegate is set and is
060   * an instance of the org.omg.CORBA_2_3.portable.Delegate. If casts
061   * the set delegate to the given type and invokes
062   * {@link org.omg.CORBA_2_3.portable.Delegate#get_codebase}.
063   *
064   * @return normally, an agreed location information, specifying, where
065   * the supporting code (like java classes) can be found.
066   *
067   * @throws BAD_OPERATION if the object delegate is not an instance
068   * of org.omg.CORBA_2_3.portable.Delegate.
069   */
070  public String _get_codebase()
071  {
072    Object delegate = _get_delegate();
073    if (delegate instanceof org.omg.CORBA_2_3.portable.Delegate)
074      return ((org.omg.CORBA_2_3.portable.Delegate) delegate).get_codebase(this);
075    else if (delegate != null)
076      throw new BAD_OPERATION(delegate.getClass().getName() +
077                              " is not a org.omg.CORBA_2_3.portable.Delegate"
078                             );
079    else
080      throw new BAD_OPERATION("The delegate not set.");
081  }
082}