001/* ValueMemberHelper.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;
040
041import gnu.CORBA.Minor;
042import gnu.CORBA.OrbRestricted;
043import gnu.CORBA.TypeCodeHelper;
044
045import org.omg.CORBA.portable.InputStream;
046import org.omg.CORBA.portable.OutputStream;
047
048/**
049 * The helper operations for the value member.
050 *
051 * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
052 */
053public abstract class ValueMemberHelper
054{
055  /**
056   * The cached typecode value, computed once.
057   */
058  private static TypeCode typeCode = null;
059
060  /**
061   * Used when creating typecodes with recursive value members.
062   */
063  private static boolean active = false;
064
065  /**
066   * Insert the value member into the given Any.
067   */
068  public static void insert(Any a, ValueMember that)
069  {
070    OutputStream out = a.create_output_stream();
071    a.type(type());
072    write(out, that);
073    a.read_value(out.create_input_stream(), type());
074  }
075
076  /**
077   * Extract the value member from the given Any.
078   */
079  public static ValueMember extract(Any a)
080  {
081    return read(a.create_input_stream());
082  }
083
084  /**
085   * Create a typecode for this value member.
086   */
087  public static synchronized TypeCode type()
088  {
089    if (typeCode == null)
090      {
091        synchronized (TypeCode.class)
092          {
093            if (typeCode == null)
094              {
095                ORB orb = OrbRestricted.Singleton;
096
097                if (active)
098                  {
099                    return orb.create_recursive_tc(id());
100                  }
101                active = true;
102
103                StructMember[] members = new StructMember[ 7 ];
104                TypeCode member;
105                member = orb.create_string_tc(0);
106                member =
107                  orb.create_alias_tc(IdentifierHelper.id(), "Identifier",
108                                      member
109                                     );
110                members [ 0 ] = new StructMember("name", member, null);
111                member = orb.create_string_tc(0);
112                member =
113                  orb.create_alias_tc(RepositoryIdHelper.id(), "RepositoryId",
114                                      member
115                                     );
116                members [ 1 ] = new StructMember("id", member, null);
117                member = orb.create_string_tc(0);
118                member =
119                  orb.create_alias_tc(RepositoryIdHelper.id(), "RepositoryId",
120                                      member
121                                     );
122                members [ 2 ] = new StructMember("defined_in", member, null);
123                member = orb.create_string_tc(0);
124                member =
125                  orb.create_alias_tc(VersionSpecHelper.id(), "VersionSpec",
126                                      member
127                                     );
128                members [ 3 ] = new StructMember("version", member, null);
129                member = orb.create_string_tc(0);
130                member = orb.get_primitive_tc(TCKind.tk_TypeCode);
131                members [ 4 ] = new StructMember("type", member, null);
132                member = IDLTypeHelper.type();
133                members [ 5 ] = new StructMember("type_def", member, null);
134                member = orb.get_primitive_tc(TCKind.tk_short);
135                member =
136                  orb.create_alias_tc(VisibilityHelper.id(), "Visibility",
137                                      member
138                                     );
139                members [ 6 ] = new StructMember("access", member, null);
140                typeCode =
141                  orb.create_struct_tc(ValueMemberHelper.id(), "ValueMember",
142                                       members
143                                      );
144                active = false;
145              }
146          }
147      }
148    return typeCode;
149  }
150
151  /**
152   * Return the ValueMember repository id.
153   *
154   * @return "IDL:omg.org/CORBA/ValueMember:1.0", always.
155   */
156  public static String id()
157  {
158    return "IDL:omg.org/CORBA/ValueMember:1.0";
159  }
160
161  /**
162   * Reads the value member from the given stream.
163   */
164  public static ValueMember read(InputStream istream)
165  {
166    try
167      {
168        ValueMember value = new ValueMember();
169        value.name = istream.read_string();
170        value.id = istream.read_string();
171        value.defined_in = istream.read_string();
172        value.version = istream.read_string();
173        value.type = TypeCodeHelper.read(istream);
174        value.type_def = IDLTypeHelper.read(istream);
175        value.access = istream.read_short();
176        return value;
177      }
178    catch (UserException ex)
179      {
180        MARSHAL m = new MARSHAL();
181        m.minor = Minor.UserException;        
182        m.initCause(ex);
183        throw m;
184      }
185  }
186
187  /**
188   * Writes the value member to the given stream.
189   */
190  public static void write(OutputStream ostream, ValueMember value)
191  {
192    try
193      {
194        ostream.write_string(value.name);
195        ostream.write_string(value.id);
196        ostream.write_string(value.defined_in);
197        ostream.write_string(value.version);
198        TypeCodeHelper.write(ostream, value.type);
199        IDLTypeHelper.write(ostream, value.type_def);
200        ostream.write_short(value.access);
201      }
202    catch (UserException ex)
203      {
204        MARSHAL m = new MARSHAL();
205        m.minor = Minor.UserException;        
206        m.initCause(ex);
207        throw m;
208      }
209  }
210}