Source for org.omg.CosNaming.NamingContextExtHelper

   1: /* NamingContextExtHelper.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.CosNaming;
  40: 
  41: import gnu.CORBA.Minor;
  42: import gnu.CORBA.OrbRestricted;
  43: 
  44: import org.omg.CORBA.Any;
  45: import org.omg.CORBA.BAD_OPERATION;
  46: import org.omg.CORBA.BAD_PARAM;
  47: import org.omg.CORBA.TypeCode;
  48: import org.omg.CORBA.portable.Delegate;
  49: import org.omg.CORBA.portable.InputStream;
  50: import org.omg.CORBA.portable.ObjectImpl;
  51: import org.omg.CORBA.portable.OutputStream;
  52: 
  53: /**
  54:  * The helper operations for the extended naming context.
  55:  *
  56:  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  57:  */
  58: public abstract class NamingContextExtHelper
  59: {
  60:   /**
  61:    * The naming context repository id.
  62:    */
  63:   private static String _id = "IDL:omg.org/CosNaming/NamingContextExt:1.0";
  64: 
  65:   /**
  66:    * Extract the naming context from the given {@link Any}.
  67:    */
  68:   public static NamingContextExt extract(Any a)
  69:   {
  70:     try
  71:       {
  72:         return ((NamingContextExtHolder) a.extract_Streamable()).value;
  73:       }
  74:     catch (ClassCastException ex)
  75:       {
  76:         BAD_OPERATION bad = new BAD_OPERATION("NamingContextExt expected");
  77:         bad.initCause(ex);
  78:         bad.minor = Minor.Any;        
  79:         throw bad;
  80:       }
  81:   }
  82: 
  83:   /**
  84:    * Get the {@link NamingContextExt} repository id.
  85:    */
  86:   public static String id()
  87:   {
  88:     return _id;
  89:   }
  90: 
  91:   /**
  92:    * Insert the naming context into the given {@link Any}
  93:    */
  94:   public static void insert(Any a, NamingContextExt that)
  95:   {
  96:     a.insert_Streamable(new NamingContextExtHolder(that));
  97:   }
  98: 
  99:   /**
 100:    * Cast the passed object into the NamingContextExt. If the
 101:    * object has a different java type, create an instance
 102:    * of the NamingContextExt, using the same delegate, as for
 103:    * the passed parameter. Hence this method may return
 104:    * a different object, than has been passed.
 105:    *
 106:    * @param obj the object to cast.
 107:    * @return casted instance.
 108:    */
 109:   public static NamingContextExt narrow(org.omg.CORBA.Object obj)
 110:   {
 111:     if (obj == null)
 112:       return null;
 113:     else if (obj instanceof NamingContextExt)
 114:       return (NamingContextExt) obj;
 115:     else if (!obj._is_a(id()))
 116:       throw new BAD_PARAM();
 117:     else
 118:       {
 119:         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
 120:         return new _NamingContextExtStub(delegate);
 121:       }
 122:   }
 123:   
 124:   /**
 125:    * Narrow the given object to the NamingContextExt. No type-checking is
 126:    * performed to verify that the object actually supports the requested type.
 127:    * The {@link BAD_OPERATION} will be thrown if unsupported operations are
 128:    * invoked on the new returned reference, but no failure is expected at the
 129:    * time of the unchecked_narrow. See OMG issue 4158.
 130:    * 
 131:    * @param obj the object to cast.
 132:    * 
 133:    * @return the casted NamingContextExt
 134:    * 
 135:    * @since 1.5 
 136:    */
 137:   public static NamingContextExt unchecked_narrow(org.omg.CORBA.Object obj)
 138:   {
 139:     if (obj == null)
 140:       return null;
 141:     else if (obj instanceof NamingContextExt)
 142:       return (NamingContextExt) obj;
 143:     else
 144:       {
 145:         // Do not call the _is_a(..).
 146:         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
 147:         return new _NamingContextExtStub(delegate);
 148:       }    
 149:   }
 150: 
 151:   /**
 152:    * Read the extended naming context from the given CDR input stream.
 153:    */
 154:   public static NamingContextExt read(InputStream istream)
 155:   {
 156:     return narrow(istream.read_Object(_NamingContextExtStub.class));
 157:   }
 158: 
 159:   /**
 160:    * Get the type code of the {@link NamingContextExt}.
 161:    */
 162:   public static TypeCode type()
 163:   {
 164:     return OrbRestricted.Singleton.create_interface_tc(NamingContextExtHelper.id(),
 165:                                           "NamingContextExt");
 166:   }
 167: 
 168:   /**
 169:    * Write the given extended naming context into the given CDR output stream.
 170:    */
 171:   public static void write(OutputStream ostream, NamingContextExt value)
 172:   {
 173:     ostream.write_Object(value);
 174:   }
 175: }