001 /* _BindingIteratorStub.java --
002 Copyright (C) 2005, 2006 Free Software Foundation, Inc.
003
004 This file is part of GNU Classpath.
005
006 GNU Classpath is free software; you can redistribute it and/or modify
007 it under the terms of the GNU General Public License as published by
008 the Free Software Foundation; either version 2, or (at your option)
009 any later version.
010
011 GNU Classpath is distributed in the hope that it will be useful, but
012 WITHOUT ANY WARRANTY; without even the implied warranty of
013 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
014 General Public License for more details.
015
016 You should have received a copy of the GNU General Public License
017 along with GNU Classpath; see the file COPYING. If not, write to the
018 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
019 02110-1301 USA.
020
021 Linking this library statically or dynamically with other modules is
022 making a combined work based on this library. Thus, the terms and
023 conditions of the GNU General Public License cover the whole
024 combination.
025
026 As a special exception, the copyright holders of this library give you
027 permission to link this library with independent modules to produce an
028 executable, regardless of the license terms of these independent
029 modules, and to copy and distribute the resulting executable under
030 terms of your choice, provided that you also meet, for each linked
031 independent module, the terms and conditions of the license of that
032 module. An independent module is a module which is not derived from
033 or based on this library. If you modify this library, you may extend
034 this exception to your version of the library, but you are not
035 obligated to do so. If you do not wish to do so, delete this
036 exception statement from your version. */
037
038
039 package org.omg.CosNaming;
040
041 import org.omg.CORBA.MARSHAL;
042 import org.omg.CORBA.portable.ApplicationException;
043 import org.omg.CORBA.portable.Delegate;
044 import org.omg.CORBA.portable.InputStream;
045 import org.omg.CORBA.portable.ObjectImpl;
046 import org.omg.CORBA.portable.OutputStream;
047 import 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 */
055 public 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 }