gomp-20050608-branch/libjava/classpath/org/omg/PortableServer/ForwardRequestHelper.java

   1 /* ForwardRequestHelper.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;
  40
  41 import gnu.CORBA.Minor;
  42 import gnu.CORBA.Poa.ForwardRequestHolder;
  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.ObjectHelper;
  48 import org.omg.CORBA.StructMember;
  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 ForwardRequest}.
  55  *
  56  * @specnote The helper must be here and not in POA subpackage as it must
  57  * be discovered by the {@link ObjectCreator} when reading this remote
  58  * exception.
  59  *
  60  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  61  */
  62 public abstract class ForwardRequestHelper
  63 {
  64   /**
  65    * The cached typecode value, computed only once.
  66    */
  67   private static TypeCode typeCode;
  68
  69   /**
  70    * Extract the ForwardRequest from given Any.
  71    * This method uses the ForwardRequestHolder.
  72    *
  73    * @throws BAD_OPERATION if the passed Any does not contain ForwardRequest.
  74    */
  75   public static ForwardRequest extract(Any any)
  76   {
  77     try
  78       {
  79         return ((ForwardRequestHolder) any.extract_Streamable()).value;
  80       }
  81     catch (ClassCastException cex)
  82       {
  83         BAD_OPERATION bad = new BAD_OPERATION("ForwardRequest expected");
  84         bad.minor = Minor.Any;
  85         bad.initCause(cex);
  86         throw bad;
  87       }
  88   }
  89
  90   /**
  91    * Get the ForwardRequest repository id.
  92    *
  93    * @return "ForwardRequest", always.
  94    */
  95   public static String id()
  96   {
  97     return "ForwardRequest";
  98   }
  99
 100   /**
 101   * Insert the ForwardRequest into the given Any.
 102   * This method uses the ForwardRequestHolder.
 103   *
 104   * @param any the Any to insert into.
 105   * @param that the ForwardRequest to insert.
 106   */
 107   public static void insert(Any any, ForwardRequest that)
 108   {
 109     any.insert_Streamable(new ForwardRequestHolder(that));
 110   }
 111
 112   /**
 113    * Read the exception from the CDR intput stream.
 114    *
 115    * @param input a org.omg.CORBA.portable stream to read from.
 116    */
 117   public static ForwardRequest read(InputStream input)
 118   {
 119     // Read the exception repository id.
 120     String id = input.read_string();
 121     ForwardRequest value = new ForwardRequest();
 122
 123     value.forward_reference = input.read_Object();
 124     return value;
 125   }
 126
 127   /**
 128    * Create the ForwardRequest typecode (structure,
 129    * named "ForwardRequest").
 130    * The typecode states that the structure contains the
 131    * following fields: forward_reference.
 132    */
 133   public static TypeCode type()
 134   {
 135     if (typeCode == null)
 136       {
 137         ORB orb = ORB.init();
 138         StructMember[] members = new StructMember[ 1 ];
 139
 140         TypeCode field;
 141
 142         field = ObjectHelper.type();
 143         members [ 0 ] = new StructMember("forward_reference", field, null);
 144         typeCode = orb.create_exception_tc(id(), "ForwardRequest", members);
 145       }
 146     return typeCode;
 147   }
 148
 149   /**
 150    * Write the exception to the CDR output stream.
 151    *
 152    * @param output a org.omg.CORBA.portable stream stream to write into.
 153    * @param value a value to write.
 154    */
 155   public static void write(OutputStream output, ForwardRequest value)
 156   {
 157     // Write the exception repository id.
 158     output.write_string(id());
 159     output.write_Object(value.forward_reference);
 160   }
 161 }