old-autovect-branch/libjava/classpath/org/omg/CosNaming/NamingContextExtHelper.java

   1 /* NamingContextExtHelper.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.CosNaming;
  40
  41 import gnu.CORBA.Minor;
  42
  43 import org.omg.CORBA.Any;
  44 import org.omg.CORBA.BAD_OPERATION;
  45 import org.omg.CORBA.BAD_PARAM;
  46 import org.omg.CORBA.ORB;
  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    * The cached {@link NamingContextExt} typecode.
  67    */
  68   private static TypeCode typeCode = null;
  69
  70   /**
  71    * Extract the naming context from the given {@link Any}.
  72    */
  73   public static NamingContextExt extract(Any a)
  74   {
  75     try
  76       {
  77         return ((NamingContextExtHolder) a.extract_Streamable()).value;
  78       }
  79     catch (ClassCastException ex)
  80       {
  81         BAD_OPERATION bad = new BAD_OPERATION("NamingContextExt expected");
  82         bad.initCause(ex);
  83         bad.minor = Minor.Any;
  84         throw bad;
  85       }
  86   }
  87
  88   /**
  89    * Get the {@link NamingContextExt} repository id.
  90    */
  91   public static String id()
  92   {
  93     return _id;
  94   }
  95
  96   /**
  97    * Insert the naming context into the given {@link Any}
  98    */
  99   public static void insert(Any a, NamingContextExt that)
 100   {
 101     a.insert_Streamable(new NamingContextExtHolder(that));
 102   }
 103
 104   /**
 105    * Cast the passed object into the NamingContextExt. If the
 106    * object has a different java type, create an instance
 107    * of the NamingContextExt, using the same delegate, as for
 108    * the passed parameter. Hence this method may return
 109    * a different object, than has been passed.
 110    *
 111    * @param obj the object to cast.
 112    * @return casted instance.
 113    */
 114   public static NamingContextExt narrow(org.omg.CORBA.Object obj)
 115   {
 116     if (obj == null)
 117       return null;
 118     else if (obj instanceof NamingContextExt)
 119       return (NamingContextExt) obj;
 120     else if (!obj._is_a(id()))
 121       throw new BAD_PARAM();
 122     else
 123       {
 124         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
 125         return new _NamingContextExtStub(delegate);
 126       }
 127   }
 128
 129   /**
 130    * Narrow the given object to the NamingContextExt. No type-checking is
 131    * performed to verify that the object actually supports the requested type.
 132    * The {@link BAD_OPERATION} will be thrown if unsupported operations are
 133    * invoked on the new returned reference, but no failure is expected at the
 134    * time of the unchecked_narrow.
 135    *
 136    * @param obj the object to cast.
 137    *
 138    * @return the casted NamingContextExt
 139    *
 140    * @since 1.5
 141    *
 142    * @see OMG issue 4158.
 143    */
 144   public static NamingContextExt unchecked_narrow(org.omg.CORBA.Object obj)
 145   {
 146     if (obj == null)
 147       return null;
 148     else if (obj instanceof NamingContextExt)
 149       return (NamingContextExt) obj;
 150     else
 151       {
 152         // Do not call the _is_a(..).
 153         Delegate delegate = ((ObjectImpl) obj)._get_delegate();
 154         return new _NamingContextExtStub(delegate);
 155       }
 156   }
 157
 158   /**
 159    * Read the extended naming context from the given CDR input stream.
 160    */
 161   public static NamingContextExt read(InputStream istream)
 162   {
 163     return narrow(istream.read_Object(_NamingContextExtStub.class));
 164   }
 165
 166   /**
 167    * Get the type code of the {@link NamingContextExt}.
 168    */
 169   public static TypeCode type()
 170   {
 171     if (typeCode == null)
 172       typeCode =
 173         ORB.init().create_interface_tc(NamingContextExtHelper.id(),
 174                                        "NamingContextExt"
 175                                       );
 176     return typeCode;
 177   }
 178
 179   /**
 180    * Write the given extended naming context into the given CDR output stream.
 181    */
 182   public static void write(OutputStream ostream, NamingContextExt value)
 183   {
 184     ostream.write_Object(value);
 185   }
 186 }