001/* _BindingIteratorStub.java --
002   Copyright (C) 2005, 2006 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.CosNaming;
040
041import org.omg.CORBA.MARSHAL;
042import org.omg.CORBA.portable.ApplicationException;
043import org.omg.CORBA.portable.Delegate;
044import org.omg.CORBA.portable.InputStream;
045import org.omg.CORBA.portable.ObjectImpl;
046import org.omg.CORBA.portable.OutputStream;
047import org.omg.CORBA.portable.RemarshalException;
048
049/**
050 * The binding interator stub (proxy), used on the client side.
051 * The BindingIterator methods contains the code for remote invocaton.
052 *
053 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
054 */
055public class _BindingIteratorStub
056  extends ObjectImpl
057  implements BindingIterator
058{
059  /**
060   * Use serialVersionUID (v1.4) for interoperability.
061   */
062  private static final long serialVersionUID = 8969257760771186704L;
063
064  /**
065   * The object can be destroyed only once.
066   */
067  private boolean destroyed;
068
069  /**
070   * Create the stub.
071   */
072  public _BindingIteratorStub()
073  {
074    super();
075  }
076
077  /**
078   * Create the stub that used the given delegate.
079   */
080  _BindingIteratorStub(Delegate delegate)
081  {
082    super();
083    _set_delegate(delegate);
084  }
085
086  /**
087   * Get an array of repository ids for this object.
088   */
089  public String[] _ids()
090  {
091    return new String[] { BindingIteratorHelper.id() };
092  }
093
094  /**
095   * Returns true if the object has been destroyed.
096   */
097  public boolean _non_existent()
098  {
099    return destroyed;
100  }
101
102  /**
103   * Destroys the object on the server side.
104   * The destruction message is sent only once, even if the method is
105   * called repeatedly.
106   */
107  public void destroy()
108  {
109    if (destroyed)
110      return;
111
112    InputStream _in = null;
113    try
114      {
115        OutputStream _out = _request("destroy", true);
116        _in = _invoke(_out);
117        destroyed = true;
118      }
119    catch (ApplicationException _ex)
120      {
121        _in = _ex.getInputStream();
122        throw new MARSHAL(_ex.getId());
123      }
124    catch (RemarshalException _rm)
125      {
126        destroy();
127      }
128    finally
129      {
130        _releaseReply(_in);
131      }
132  }
133
134  /** {@inheritDoc} */
135  public boolean next_n(int amount, BindingListHolder a_list)
136  {
137    InputStream _in = null;
138    try
139      {
140        OutputStream _out = _request("next_n", true);
141        _out.write_ulong(amount);
142        _in = _invoke(_out);
143
144        boolean result = _in.read_boolean();
145        a_list.value = BindingListHelper.read(_in);
146        return result;
147      }
148    catch (ApplicationException _ex)
149      {
150        _in = _ex.getInputStream();
151        throw new MARSHAL(_ex.getId());
152      }
153    catch (RemarshalException _rm)
154      {
155        return next_n(amount, a_list);
156      }
157    finally
158      {
159        _releaseReply(_in);
160      }
161  }
162
163  /** {@inheritDoc} */
164  public boolean next_one(BindingHolder a_binding)
165  {
166    InputStream _in = null;
167    try
168      {
169        OutputStream _out = _request("next_one", true);
170        _in = _invoke(_out);
171
172        boolean result = _in.read_boolean();
173        a_binding.value = BindingHelper.read(_in);
174        return result;
175      }
176    catch (ApplicationException _ex)
177      {
178        _in = _ex.getInputStream();
179        throw new MARSHAL(_ex.getId());
180      }
181    catch (RemarshalException _rm)
182      {
183        return next_one(a_binding);
184      }
185    finally
186      {
187        _releaseReply(_in);
188      }
189  }
190
191  /**
192   * Destroys the iterator instance on the server side, calling
193   * {@link #destroy()}.
194   *
195   * @throws java.lang.Throwable
196   */
197  protected void finalize()
198                   throws java.lang.Throwable
199  {
200    destroy();
201    super.finalize();
202  }
203}