old-autovect-branch/libjava/classpath/org/omg/PortableServer/CurrentPackage/NoContextHelper.java

   1 /* NoContextHelper.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.PortableServer.CurrentPackage;
  40
  41 import gnu.CORBA.EmptyExceptionHolder;
  42 import gnu.CORBA.Minor;
  43
  44 import org.omg.CORBA.Any;
  45 import org.omg.CORBA.BAD_OPERATION;
  46 import org.omg.CORBA.ORB;
  47 import org.omg.CORBA.StructMember;
  48 import org.omg.CORBA.TCKind;
  49 import org.omg.CORBA.TypeCode;
  50 import org.omg.CORBA.portable.InputStream;
  51 import org.omg.CORBA.portable.OutputStream;
  52
  53 /**
  54 * The helper operations for the exception {@link NoContext}.
  55 *
  56 * @author Audrius Meskauskas, Lithiania (AudriusA@Bioinformatics.org)
  57 */
  58 public abstract class NoContextHelper
  59 {
  60   /**
  61    * The cached typecode value, computed only once.
  62    */
  63   private static TypeCode typeCode;
  64
  65   /**
  66    * Create the NoContext typecode (structure,
  67    * named "NoContext").
  68    */
  69   public static TypeCode type()
  70   {
  71     if (typeCode == null)
  72       {
  73         ORB orb = ORB.init();
  74         StructMember[] members = new StructMember[ 0 ];
  75         typeCode = orb.create_exception_tc(id(), "NoContext", members);
  76       }
  77     return typeCode;
  78   }
  79
  80   /* Every user exception with no user defined fields can use EmptyExceptionHolder */
  81
  82   /**
  83    * Insert the NoContext into the given Any.
  84    *
  85    * @param any the Any to insert into.
  86    * @param that the NoContext to insert.
  87    */
  88   public static void insert(Any any, NoContext that)
  89   {
  90     any.insert_Streamable(new EmptyExceptionHolder(that, type()));
  91   }
  92
  93   /**
  94    * Extract the NoContext from given Any.
  95    *
  96    * @throws BAD_OPERATION if the passed Any does not contain NoContext.
  97    */
  98   public static NoContext extract(Any any)
  99   {
 100     try
 101       {
 102         EmptyExceptionHolder h =
 103           (EmptyExceptionHolder) any.extract_Streamable();
 104         return (NoContext) h.value;
 105       }
 106     catch (ClassCastException cex)
 107       {
 108         BAD_OPERATION bad = new BAD_OPERATION("NoContext expected");
 109         bad.minor = Minor.Any;
 110         bad.initCause(cex);
 111         throw bad;
 112       }
 113   }
 114
 115   /**
 116    * Get the NoContext repository id.
 117    *
 118    * @return "IDL:omg.org/PortableServer/Current/NoContext:1.0", always.
 119    */
 120   public static String id()
 121   {
 122     return "IDL:omg.org/PortableServer/Current/NoContext:1.0";
 123   }
 124
 125   /**
 126    * Read the exception from the CDR intput stream.
 127    *
 128    * @param input a org.omg.CORBA.portable stream to read from.
 129    */
 130   public static NoContext read(InputStream input)
 131   {
 132     // Read the exception repository id.
 133     String id = input.read_string();
 134     NoContext value = new NoContext(id);
 135
 136     return value;
 137   }
 138
 139   /**
 140    * Write the exception to the CDR output stream.
 141    *
 142    * @param output a org.omg.CORBA.portable stream stream to write into.
 143    * @param value a value to write.
 144    */
 145   public static void write(OutputStream output, NoContext value)
 146   {
 147     // Write the exception repository id.
 148     output.write_string(id());
 149   }
 150 }