libjava/classpath/org/omg/CORBA/ValueMemberHelper.java

   1 /* ValueMemberHelper.java --
   2    Copyright (C) 2005 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package org.omg.CORBA;
  40
  41 import gnu.CORBA.Minor;
  42 import gnu.CORBA.OrbRestricted;
  43 import gnu.CORBA.TypeCodeHelper;
  44
  45 import org.omg.CORBA.portable.InputStream;
  46 import org.omg.CORBA.portable.OutputStream;
  47
  48 /**
  49  * The helper operations for the value member.
  50  *
  51  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  52  */
  53 public abstract class ValueMemberHelper
  54 {
  55   /**
  56    * The cached typecode value, computed once.
  57    */
  58   private static TypeCode typeCode = null;
  59
  60   /**
  61    * Used when creating typecodes with recursive value members.
  62    */
  63   private static boolean active = false;
  64
  65   /**
  66    * Insert the value member into the given Any.
  67    */
  68   public static void insert(Any a, ValueMember that)
  69   {
  70     OutputStream out = a.create_output_stream();
  71     a.type(type());
  72     write(out, that);
  73     a.read_value(out.create_input_stream(), type());
  74   }
  75
  76   /**
  77    * Extract the value member from the given Any.
  78    */
  79   public static ValueMember extract(Any a)
  80   {
  81     return read(a.create_input_stream());
  82   }
  83
  84   /**
  85    * Create a typecode for this value member.
  86    */
  87   public static synchronized TypeCode type()
  88   {
  89     if (typeCode == null)
  90       {
  91         synchronized (TypeCode.class)
  92           {
  93             if (typeCode == null)
  94               {
  95                 ORB orb = OrbRestricted.Singleton;
  96
  97                 if (active)
  98                   {
  99                     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 }