001/* _BindingIteratorImplBase.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.CosNaming;
040
041import gnu.CORBA.Minor;
042
043import org.omg.CORBA.BAD_OPERATION;
044import org.omg.CORBA.BooleanHolder;
045import org.omg.CORBA.CompletionStatus;
046import org.omg.CORBA.DynamicImplementation;
047import org.omg.CORBA.ServerRequest;
048import org.omg.CORBA.portable.InputStream;
049import org.omg.CORBA.portable.InvokeHandler;
050import org.omg.CORBA.portable.OutputStream;
051import org.omg.CORBA.portable.ResponseHandler;
052import org.omg.CORBA.portable.Streamable;
053
054/**
055 * The binding iterator implementation base.
056 *
057 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
058 */
059public abstract class _BindingIteratorImplBase
060  extends DynamicImplementation
061  implements BindingIterator, InvokeHandler
062{
063  /**
064   * Use serialVersionUID (v1.4) for interoperability.
065   */
066  private static final long serialVersionUID = 3472591176635005503L;
067
068  /**
069   * The binding interator repository id.
070   */
071  private static String[] ids = { BindingIteratorHelper.id() };
072
073  /**
074   * Return the list of repository ids.
075   */
076  public String[] _ids()
077  {
078    return ids;
079  }
080
081  /**
082   * Call the required method.
083   */
084  public OutputStream _invoke(String method, InputStream in, ResponseHandler rh)
085  {
086    OutputStream out = null;
087
088    // We suppose that the next_n should be the most popular.
089    if (method.equals("next_n"))
090      {
091        // The next_n has been invoked.
092        int amount = in.read_ulong();
093        BindingListHolder a_list = new BindingListHolder();
094
095        boolean result = next_n(amount, a_list);
096
097        out = rh.createReply();
098        out.write_boolean(result);
099        BindingListHelper.write(out, a_list.value);
100      }
101    else if (method.equals("next_one"))
102      {
103        // The next_one has been invoked.
104        BindingHolder a_binding = new BindingHolder();
105
106        boolean result = next_one(a_binding);
107
108        out = rh.createReply();
109        out.write_boolean(result);
110        BindingHelper.write(out, a_binding.value);
111      }
112    else if (method.equals("destroy"))
113      {
114        // The destroy has been invoked.
115        destroy();
116        out = rh.createReply();
117      }
118    else
119      throw new BAD_OPERATION(method, Minor.Method,
120        CompletionStatus.COMPLETED_MAYBE);
121
122    return out;
123  }
124
125  /**
126   * The obsolete invocation using server request. Implemented for
127   * compatibility reasons, but is it more effectinve to use
128   * {@link #_invoke}.
129   *
130   * @param request a server request.
131   */
132  public void invoke(ServerRequest request)
133  {
134    // "destroy" has a void return type, the two other methods - boolean.
135    Streamable result =
136      request.operation().equals("destroy") ? null : new BooleanHolder();
137    gnu.CORBA.ServiceRequestAdapter.invoke(request, this, result);
138  }
139}