gomp-20050608-branch/libjava/classpath/org/omg/CosNaming/NameComponentHelper.java

   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 }