001 /* DynamicImplementation.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.CORBA;
040
041 import gnu.CORBA.Unexpected;
042 import gnu.CORBA.gnuAny;
043 import gnu.CORBA.gnuNVList;
044
045 import org.omg.CORBA.portable.ObjectImpl;
046 import org.omg.CORBA.portable.OutputStream;
047
048 /**
049 * This class was probably originally thinked as a base of all CORBA
050 * object implementations. However the code, generated by IDL to
051 * java compilers almost never use it, preferring to derive the
052 * object implementation bases directly from the {@link ObjectImpl}.
053 * The class has become deprecated since the 1.4 release.
054 *
055 * @deprecated since 1.4.
056 *
057 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
058 */
059 public class DynamicImplementation
060 extends ObjectImpl
061 {
062 /**
063 * Invoke the method of the CORBA object. After converting the parameters,
064 * this method delegates call to the {@link ObjectImpl#_invoke}.
065 *
066 * @deprecated since 1.4.
067 *
068 * @param request the container for both passing and returing the parameters,
069 * also contains the method name and thrown exceptions.
070 */
071 public void invoke(ServerRequest request)
072 {
073 Request r = _request(request.operation());
074
075 // Copy the parameters.
076 NVList args = new gnuNVList();
077 request.arguments(args);
078 NamedValue v;
079 int i = 0;
080
081 try
082 {
083 // Set the arguments.
084 for (i = 0; i < args.count(); i++)
085 {
086 v = args.item(i);
087 Any n;
088 OutputStream out;
089
090 switch (v.flags())
091 {
092 case ARG_IN.value:
093 out = v.value().create_output_stream();
094 v.value().write_value(out);
095 n = r.add_named_in_arg(v.name());
096 n.read_value(out.create_input_stream(), v.value().type());
097 break;
098 case ARG_INOUT.value:
099 out = v.value().create_output_stream();
100 v.value().write_value(out);
101 n = r.add_named_inout_arg(v.name());
102 n.read_value(out.create_input_stream(), v.value().type());
103 break;
104 case ARG_OUT.value:
105 r.add_named_out_arg(v.name());
106 break;
107
108 default:
109 throw new InternalError("Invalid flags " + v.flags());
110 }
111 }
112 }
113 catch (Bounds b)
114 {
115 throw new Unexpected(args.count() + "[" + i + "]", b);
116 }
117
118 // Set context.
119 r.ctx(request.ctx());
120
121 // Set the return type (expects that the ServerRequest will initialise
122 // the passed Any.
123
124 gnuAny g = new gnuAny();
125 request.result(g);
126 r.set_return_type(g.type());
127
128 // Invoke the method.
129 r.invoke();
130
131 // Transfer the returned values.
132 NVList r_args = r.arguments();
133
134 try
135 {
136 // API states that the ServerRequest.arguments must be called only
137 // once. Hence we assume we can just modify the previously returned
138 // value <code>args</code>, and the ServerRequest will preserve the
139 // reference.
140 for (i = 0; i < args.count(); i++)
141 {
142 v = args.item(i);
143
144 if (v.flags() == ARG_OUT.value || v.flags() == ARG_INOUT.value)
145 {
146 OutputStream out = r_args.item(i).value().create_output_stream();
147 r_args.item(i).value().write_value(out);
148 v.value().read_value(out.create_input_stream(),
149 v.value().type());
150 }
151 }
152 }
153 catch (Bounds b)
154 {
155 throw new Unexpected(args.count() + "[" + i + "]", b);
156 }
157
158 // Set the returned result (if any).
159 NamedValue returns = r.result();
160 if (returns != null)
161 request.set_result(returns.value());
162 }
163
164 /**
165 * Returns the array of the repository ids, supported by this object.
166 * In this implementation, the method must be overrridden to return
167 * a sendible object-specific information. The default method returns
168 * an empty array.
169 *
170 * @deprecated since 1.4.
171 *
172 * @return the empty array, always.
173 */
174 public String[] _ids()
175 {
176 return new String[ 0 ];
177 }
178 }