Source for org.omg.CosNaming.NameComponentHelper

   1: /* NameComponentHelper.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.CosNaming;
  40: 
  41: import gnu.CORBA.Minor;
  42: 
  43: import org.omg.CORBA.Any;
  44: import org.omg.CORBA.BAD_OPERATION;
  45: import org.omg.CORBA.ORB;
  46: import org.omg.CORBA.StructMember;
  47: import org.omg.CORBA.TypeCode;
  48: import org.omg.CORBA.portable.InputStream;
  49: import org.omg.CORBA.portable.OutputStream;
  50: 
  51: /**
  52:  * A helper classes for the name component.
  53:  *
  54:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  55:  */
  56: public abstract class NameComponentHelper
  57: {
  58:   /**
  59:    * A {@link NameComponent} repository id.
  60:    */
  61:   private static String _id = "IDL:omg.org/CosNaming/NameComponent:1.0";
  62: 
  63:   /**
  64:    * The cached type code.
  65:    */
  66:   private static TypeCode typeCode = null;
  67: 
  68:   /**
  69:    * Extract the name component from this {@link Any}
  70:    */
  71:   public static NameComponent extract(Any a)
  72:   {
  73:     try
  74:       {
  75:         return ((NameComponentHolder) a.extract_Streamable()).value;
  76:       }
  77:     catch (ClassCastException ex)
  78:       {
  79:         BAD_OPERATION bad = new BAD_OPERATION("Name component expected");
  80:         bad.initCause(ex);
  81:         bad.minor = Minor.Any;        
  82:         throw bad;
  83:       }
  84:   }
  85: 
  86:   /**
  87:    * Get the repository Id of the {@link NameComponent}.
  88:    * @return
  89:    */
  90:   public static String id()
  91:   {
  92:     return _id;
  93:   }
  94: 
  95:   /**
  96:    * Insert the name compnent into the given {@link Any}.
  97:    */
  98:   public static void insert(Any a, NameComponent that)
  99:   {
 100:     a.insert_Streamable(new NameComponentHolder(that));
 101:   }
 102: 
 103:   /**
 104:    * Read the name component from the given CDR input stream.
 105:    */
 106:   public static NameComponent read(InputStream istream)
 107:   {
 108:     NameComponent value = new NameComponent();
 109:     value.id = istream.read_string();
 110:     value.kind = istream.read_string();
 111:     return value;
 112:   }
 113: 
 114:   /**
 115:    * Get the type code of the named component.
 116:    */
 117:   public static TypeCode type()
 118:   {
 119:     if (typeCode == null)
 120:       {
 121:         ORB orb = ORB.init();
 122: 
 123:         StructMember[] members = new StructMember[ 2 ];
 124:         TypeCode member;
 125:         member = orb.create_string_tc(0);
 126:         members [ 0 ] = new StructMember("id", member, null);
 127:         member = orb.create_string_tc(0);
 128:         members [ 1 ] = new StructMember("kind", member, null);
 129:         typeCode =
 130:           orb.create_struct_tc(NameComponentHelper.id(), "NameComponent",
 131:                                members
 132:                               );
 133:       }
 134:     return typeCode;
 135:   }
 136: 
 137:   /**
 138:    * Write the named component into the CDR output stream.
 139:    */
 140:   public static void write(OutputStream ostream, NameComponent value)
 141:   {
 142:     ostream.write_string(value.id);
 143:     ostream.write_string(value.kind);
 144:   }
 145: }