Source for org.omg.PortableServer.POAPackage.NoServantHelper

   1: /* NoServantHelper.java --
   2:    Copyright (C) 2005, 2006 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.POAPackage;
  40: 
  41: import gnu.CORBA.EmptyExceptionHolder;
  42: import gnu.CORBA.Minor;
  43: import gnu.CORBA.OrbRestricted;
  44: 
  45: import org.omg.CORBA.Any;
  46: import org.omg.CORBA.BAD_OPERATION;
  47: import org.omg.CORBA.ORB;
  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 NoServant}.
  55:  *
  56:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  57:  */
  58: public abstract class NoServantHelper
  59: {
  60:   /**
  61:    * The cached typecode value, computed only once.
  62:    */
  63:   private static TypeCode typeCode;
  64: 
  65:   /**
  66:    * Create the NoServant typecode (empty structure,
  67:    * named "NoServant").
  68:    */
  69:   public static TypeCode type()
  70:   {
  71:     if (typeCode == null)
  72:       {
  73:         ORB orb = OrbRestricted.Singleton;
  74:         StructMember[] members = new StructMember[ 0 ];
  75:         typeCode = orb.create_exception_tc(id(), "NoServant", members);
  76:       }
  77:     return typeCode;
  78:   }
  79: 
  80:   /* Every user exception with no user defined
  81:      fields can use EmptyExceptionHolder */
  82: 
  83:   /**
  84:    * Insert the NoServant into the given Any.
  85:    *
  86:    * @param any the Any to insert into.
  87:    * @param that the NoServant to insert.
  88:    */
  89:   public static void insert(Any any, NoServant that)
  90:   {
  91:     any.insert_Streamable(new EmptyExceptionHolder(that, type()));
  92:   }
  93: 
  94:   /**
  95:    * Extract the NoServant from given Any.
  96:    *
  97:    * @throws BAD_OPERATION if the passed Any does not contain NoServant.
  98:    */
  99:   public static NoServant extract(Any any)
 100:   {
 101:     try
 102:       {
 103:         EmptyExceptionHolder h =
 104:           (EmptyExceptionHolder) any.extract_Streamable();
 105:         return (NoServant) h.value;
 106:       }
 107:     catch (ClassCastException cex)
 108:       {
 109:         BAD_OPERATION bad = new BAD_OPERATION("NoServant expected");
 110:         bad.minor = Minor.Any;
 111:         bad.initCause(cex);
 112:         throw bad;
 113:       }
 114:   }
 115: 
 116:   /**
 117:    * Get the NoServant repository id.
 118:    *
 119:    * @return "IDL:omg.org/PortableServer/POA/NoServant:1.0", always.
 120:    */
 121:   public static String id()
 122:   {
 123:     return "IDL:omg.org/PortableServer/POA/NoServant:1.0";
 124:   }
 125: 
 126:   /**
 127:    * Read the exception from the CDR intput stream.
 128:    *
 129:    * @param input a org.omg.CORBA.portable stream to read from.
 130:    */
 131:   public static NoServant read(InputStream input)
 132:   {
 133:     // Read the exception repository id.
 134:     String id = input.read_string();
 135:     NoServant value = new NoServant(id);
 136: 
 137:     return value;
 138:   }
 139: 
 140:   /**
 141:    * Write the exception to the CDR output stream.
 142:    *
 143:    * @param output a org.omg.CORBA.portable stream stream to write into.
 144:    * @param value a value to write.
 145:    */
 146:   public static void write(OutputStream output, NoServant value)
 147:   {
 148:     // Write the exception repository id.
 149:     output.write_string(id());
 150:   }
 151: }