Source for org.omg.CORBA.CurrentHelper

   1: /* CurrentHelper.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.CORBA;
  40: 
  41: import gnu.CORBA.OrbRestricted;
  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.TCKind;
  48: import org.omg.CORBA.TypeCode;
  49: import org.omg.CORBA.portable.Delegate;
  50: import org.omg.CORBA.portable.InputStream;
  51: import org.omg.CORBA.portable.ObjectImpl;
  52: import org.omg.CORBA.portable.OutputStream;
  53: 
  54: /**
  55: * The helper operations for the CORBA object {@link Current}.
  56: *
  57: * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  58: */
  59: public abstract class CurrentHelper
  60: {
  61:   /**
  62:    * The Current stub (proxy), used on the client side.
  63:    * The {@link Current} methods should contain the code for remote
  64:    * invocaton. As there are no methods defined, this class is only
  65:    * used for the formal support of the
  66:    * {@link #narrow(org.omg.CORBA.Object)}.
  67:    */
  68:   private static class _CurrentStub
  69:     extends ObjectImpl
  70:     implements Current
  71:   {
  72:     /**
  73:      * Create the naming context stub with the given delegate.
  74:      */
  75:     public _CurrentStub(Delegate delegate)
  76:     {
  77:       _set_delegate(delegate);
  78:     }
  79: 
  80:     /**
  81:      * Return the array of repository ids for this object.
  82:      */
  83:     public String[] _ids()
  84:     {
  85:       return new String[] { id() };
  86:     }
  87:   }
  88: 
  89:   /**
  90:    * Get the type code of the {@link Current}.
  91:    */
  92:   public static TypeCode type()
  93:   {
  94:     return
  95:       OrbRestricted.Singleton.create_interface_tc(id(), "Current");
  96:   }
  97: 
  98:   /**
  99:    * Insert the Current into the given Any.
 100:    *
 101:    * @param any the Any to insert into.
 102:    * @param that the Current to insert.
 103:    */
 104:   public static void insert(Any any, Current that)
 105:   {
 106:     any.insert_Object(that);
 107:   }
 108: 
 109:   /**
 110:    * Extract the Current from given Any.
 111:    *
 112:    * @throws BAD_OPERATION if the passed Any does not contain Current.
 113:    */
 114:   public static Current extract(Any any)
 115:   {
 116:     return narrow(any.extract_Object());
 117:   }
 118: 
 119:   /**
 120:    * Get the Current repository id.
 121:    *
 122:    * @return "IDL:omg.org/CORBA/Current:1.0", always.
 123:    */
 124:   public static String id()
 125:   {
 126:     return "IDL:omg.org/CORBA/Current:1.0";
 127:   }
 128: 
 129:   /**
 130:    * Cast the passed object into the Current. If the
 131:    * object has a different java type, create an instance
 132:    * of the _CurrentStub, using the same delegate, as for
 133:    * the passed parameter. Hence, unlike java type cast,
 134:    * this method may return a different object, than has been passed.
 135:    *
 136:    * @param obj the object to narrow.
 137:    * @return narrowed instance.
 138:    *
 139:    * @throws BAD_PARAM if the passed object is not a Current.
 140:    */
 141:   public static Current narrow(org.omg.CORBA.Object obj)
 142:   {
 143:     if (obj == null)
 144:       return null;
 145:     else if (obj instanceof Current)
 146:       return (Current) obj;
 147:     else if (!obj._is_a(id()))
 148:       throw new BAD_PARAM("Not a Current");
 149:     else
 150:       {
 151:         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
 152:         return new _CurrentStub(delegate);
 153:       }
 154:   }
 155: 
 156:   /**
 157:    * Read the Current from the CDR intput stream (IOR profile expected).
 158:    *
 159:    * @param input a org.omg.CORBA.portable stream to read from.
 160:    */
 161:   public static Current read(InputStream input)
 162:   {
 163:     return narrow(input.read_Object());
 164:   }
 165: 
 166:   /**
 167:    * Write the Current to the CDR output stream (as IOR profile).
 168:    *
 169:    * @param output a org.omg.CORBA.portable stream stream to write into.
 170:    * @param value a value to write.
 171:    */
 172:   public static void write(OutputStream output, Current value)
 173:   {
 174:     output.write_Object(value);
 175:   }