Source for org.omg.PortableServer.ForwardRequestHelper

   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.Poa.ForwardRequestHolder;
  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.ObjectHelper;
  47: import org.omg.CORBA.StructMember;
  48: import org.omg.CORBA.TypeCode;
  49: import org.omg.CORBA.portable.InputStream;
  50: import org.omg.CORBA.portable.OutputStream;
  51: 
  52: /**
  53:  * The helper operations for the exception {@link ForwardRequest}.
  54:  *
  55:  * @specnote The helper must be here and not in POA subpackage as it must
  56:  * be discovered by the {@link ObjectCreator} when reading this remote
  57:  * exception.
  58:  *
  59:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  60:  */
  61: public abstract class ForwardRequestHelper
  62: {
  63:   /**
  64:    * The cached typecode value, computed only once.
  65:    */
  66:   private static TypeCode typeCode;
  67: 
  68:   /**
  69:    * Extract the ForwardRequest from given Any.
  70:    * This method uses the ForwardRequestHolder.
  71:    *
  72:    * @throws BAD_OPERATION if the passed Any does not contain ForwardRequest.
  73:    */
  74:   public static ForwardRequest extract(Any any)
  75:   {
  76:     try
  77:       {
  78:         return ((ForwardRequestHolder) any.extract_Streamable()).value;
  79:       }
  80:     catch (ClassCastException cex)
  81:       {
  82:         BAD_OPERATION bad = new BAD_OPERATION("ForwardRequest expected");
  83:         bad.initCause(cex);
  84:         throw bad;
  85:       }
  86:   }
  87: 
  88:   /**
  89:    * Get the ForwardRequest repository id.
  90:    *
  91:    * @return "ForwardRequest", always.
  92:    */
  93:   public static String id()
  94:   {
  95:     return "ForwardRequest";
  96:   }
  97: 
  98:   /**
  99:   * Insert the ForwardRequest into the given Any.
 100:   * This method uses the ForwardRequestHolder.
 101:   *
 102:   * @param any the Any to insert into.
 103:   * @param that the ForwardRequest to insert.
 104:   */
 105:   public static void insert(Any any, ForwardRequest that)
 106:   {
 107:     any.insert_Streamable(new ForwardRequestHolder(that));
 108:   }
 109: 
 110:   /**
 111:    * Read the exception from the CDR intput stream.
 112:    *
 113:    * @param input a org.omg.CORBA.portable stream to read from.
 114:    */
 115:   public static ForwardRequest read(InputStream input)
 116:   {
 117:     // Read the exception repository id.
 118:     String id = input.read_string();
 119:     ForwardRequest value = new ForwardRequest();
 120: 
 121:     value.forward_reference = input.read_Object();
 122:     return value;
 123:   }
 124: 
 125:   /**
 126:    * Create the ForwardRequest typecode (structure,
 127:    * named "ForwardRequest").
 128:    * The typecode states that the structure contains the
 129:    * following fields: forward_reference.
 130:    */
 131:   public static TypeCode type()
 132:   {
 133:     if (typeCode == null)
 134:       {
 135:         ORB orb = ORB.init();
 136:         StructMember[] members = new StructMember[ 1 ];
 137: 
 138:         TypeCode field;
 139: 
 140:         field = ObjectHelper.type();
 141:         members [ 0 ] = new StructMember("forward_reference", field, null);
 142:         typeCode = orb.create_exception_tc(id(), "ForwardRequest", members);
 143:       }
 144:     return typeCode;
 145:   }
 146: 
 147:   /**
 148:    * Write the exception to the CDR output stream.
 149:    *
 150:    * @param output a org.omg.CORBA.portable stream stream to write into.
 151:    * @param value a value to write.
 152:    */
 153:   public static void write(OutputStream output, ForwardRequest value)
 154:   {
 155:     // Write the exception repository id.
 156:     output.write_string(id());
 157:     output.write_Object(value.forward_reference);
 158:   }