libjava/classpath/org/omg/CosNaming/_NamingContextImplBase.java

   1 /* _NamingContextImplBase.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.BAD_OPERATION;
  44 import org.omg.CORBA.CompletionStatus;
  45 import org.omg.CORBA.DynamicImplementation;
  46 import org.omg.CORBA.ObjectHelper;
  47 import org.omg.CORBA.ObjectHolder;
  48 import org.omg.CORBA.ServerRequest;
  49 import org.omg.CORBA.portable.InputStream;
  50 import org.omg.CORBA.portable.InvokeHandler;
  51 import org.omg.CORBA.portable.OutputStream;
  52 import org.omg.CORBA.portable.ResponseHandler;
  53 import org.omg.CORBA.portable.Streamable;
  54 import org.omg.CosNaming.NamingContextPackage.AlreadyBound;
  55 import org.omg.CosNaming.NamingContextPackage.AlreadyBoundHelper;
  56 import org.omg.CosNaming.NamingContextPackage.CannotProceed;
  57 import org.omg.CosNaming.NamingContextPackage.CannotProceedHelper;
  58 import org.omg.CosNaming.NamingContextPackage.InvalidName;
  59 import org.omg.CosNaming.NamingContextPackage.InvalidNameHelper;
  60 import org.omg.CosNaming.NamingContextPackage.NotEmpty;
  61 import org.omg.CosNaming.NamingContextPackage.NotEmptyHelper;
  62 import org.omg.CosNaming.NamingContextPackage.NotFound;
  63 import org.omg.CosNaming.NamingContextPackage.NotFoundHelper;
  64
  65 import java.util.Hashtable;
  66
  67 /**
  68  * The naming context implementation base.
  69  *
  70  * @author Audrius Meskauskas, Lithuania (AudriusA@Bioinformatics.org)
  71  */
  72 public abstract class _NamingContextImplBase
  73   extends DynamicImplementation
  74   implements NamingContext, InvokeHandler
  75 {
  76   /**
  77    * Use serialVersionUID (v1.4) for interoperability.
  78    */
  79   private static final long serialVersionUID = -114280294134561035L;
  80
  81   /**
  82    * As there are quite many methods, it may be sensible to use the hashtable.
  83    * This field is also reused in NamingContextPOA.
  84    */
  85   static Hashtable<String,Integer> methods = new Hashtable<String,Integer>();
  86
  87   /**
  88    * Put all methods into the table.
  89    */
  90   static
  91   {
  92     methods.put("bind", new Integer(0));
  93     methods.put("rebind", new Integer(1));
  94     methods.put("bind_context", new Integer(2));
  95     methods.put("rebind_context", new Integer(3));
  96     methods.put("resolve", new Integer(4));
  97     methods.put("unbind", new Integer(5));
  98     methods.put("new_context", new Integer(6));
  99     methods.put("bind_new_context", new Integer(7));
 100     methods.put("destroy", new Integer(8));
 101     methods.put("list", new Integer(9));
 102   }
 103
 104   /**
 105    * Return the array of repository ids.
 106    */
 107   public String[] _ids()
 108   {
 109     return new String[] { NamingContextHelper.id() };
 110   }
 111
 112   /**
 113    * The server calls this method after receiving the request message
 114    * from client. The implementation base calls one of its abstract
 115    * methods to perform the requested operation.
 116    *
 117    * @param method the method being invoked.
 118    * @param in the stream to read parameters from.
 119    * @param rh the handler to get a stream for writing a response.
 120    *
 121    * @return the stream, returned by the handler.
 122    */
 123   public OutputStream _invoke(String method, InputStream in, ResponseHandler rh)
 124   {
 125     OutputStream out = null;
 126     Integer call_method = (Integer) methods.get(method);
 127     if (call_method == null)
 128       throw new BAD_OPERATION(Minor.Method, CompletionStatus.COMPLETED_MAYBE);
 129
 130     switch (call_method.intValue())
 131       {
 132         case 0 : // bind
 133         {
 134           try
 135             {
 136               NameComponent[] a_name = NameHelper.read(in);
 137               org.omg.CORBA.Object an_object = ObjectHelper.read(in);
 138               bind(a_name, an_object);
 139               out = rh.createReply();
 140             }
 141           catch (NotFound ex)
 142             {
 143               out = rh.createExceptionReply();
 144               NotFoundHelper.write(out, ex);
 145             }
 146           catch (CannotProceed ex)
 147             {
 148               out = rh.createExceptionReply();
 149               CannotProceedHelper.write(out, ex);
 150             }
 151           catch (InvalidName ex)
 152             {
 153               out = rh.createExceptionReply();
 154               InvalidNameHelper.write(out, ex);
 155             }
 156           catch (AlreadyBound ex)
 157             {
 158               out = rh.createExceptionReply();
 159               AlreadyBoundHelper.write(out, ex);
 160             }
 161           break;
 162         }
 163
 164         case 1 : // rebind
 165         {
 166           try
 167             {
 168               NameComponent[] a_name = NameHelper.read(in);
 169               org.omg.CORBA.Object an_object = ObjectHelper.read(in);
 170               rebind(a_name, an_object);
 171               out = rh.createReply();
 172             }
 173           catch (NotFound ex)
 174             {
 175               out = rh.createExceptionReply();
 176               NotFoundHelper.write(out, ex);
 177             }
 178           catch (CannotProceed ex)
 179             {
 180               out = rh.createExceptionReply();
 181               CannotProceedHelper.write(out, ex);
 182             }
 183           catch (InvalidName ex)
 184             {
 185               out = rh.createExceptionReply();
 186               InvalidNameHelper.write(out, ex);
 187             }
 188           break;
 189         }
 190
 191         case 2 : // bind_context
 192         {
 193           try
 194             {
 195               NameComponent[] a_name = NameHelper.read(in);
 196               NamingContext a_context = NamingContextHelper.read(in);
 197               bind_context(a_name, a_context);
 198               out = rh.createReply();
 199             }
 200           catch (NotFound ex)
 201             {
 202               out = rh.createExceptionReply();
 203               NotFoundHelper.write(out, ex);
 204             }
 205           catch (CannotProceed ex)
 206             {
 207               out = rh.createExceptionReply();
 208               CannotProceedHelper.write(out, ex);
 209             }
 210           catch (InvalidName ex)
 211             {
 212               out = rh.createExceptionReply();
 213               InvalidNameHelper.write(out, ex);
 214             }
 215           catch (AlreadyBound ex)
 216             {
 217               out = rh.createExceptionReply();
 218               AlreadyBoundHelper.write(out, ex);
 219             }
 220           break;
 221         }
 222
 223         case 3 : // rebind_context
 224         {
 225           try
 226             {
 227               NameComponent[] a_name = NameHelper.read(in);
 228               NamingContext a_context = NamingContextHelper.read(in);
 229               rebind_context(a_name, a_context);
 230               out = rh.createReply();
 231             }
 232           catch (NotFound ex)
 233             {
 234               out = rh.createExceptionReply();
 235               NotFoundHelper.write(out, ex);
 236             }
 237           catch (CannotProceed ex)
 238             {
 239               out = rh.createExceptionReply();
 240               CannotProceedHelper.write(out, ex);
 241             }
 242           catch (InvalidName ex)
 243             {
 244               out = rh.createExceptionReply();
 245               InvalidNameHelper.write(out, ex);
 246             }
 247           break;
 248         }
 249
 250         case 4 : // resolve
 251         {
 252           try
 253             {
 254               NameComponent[] a_name = NameHelper.read(in);
 255               org.omg.CORBA.Object __result = null;
 256               __result = resolve(a_name);
 257               out = rh.createReply();
 258               ObjectHelper.write(out, __result);
 259             }
 260           catch (NotFound ex)
 261             {
 262               out = rh.createExceptionReply();
 263               NotFoundHelper.write(out, ex);
 264             }
 265           catch (CannotProceed ex)
 266             {
 267               out = rh.createExceptionReply();
 268               CannotProceedHelper.write(out, ex);
 269             }
 270           catch (InvalidName ex)
 271             {
 272               out = rh.createExceptionReply();
 273               InvalidNameHelper.write(out, ex);
 274             }
 275           break;
 276         }
 277
 278         case 5 : // unbind
 279         {
 280           try
 281             {
 282               NameComponent[] a_name = NameHelper.read(in);
 283               unbind(a_name);
 284               out = rh.createReply();
 285             }
 286           catch (NotFound ex)
 287             {
 288               out = rh.createExceptionReply();
 289               NotFoundHelper.write(out, ex);
 290             }
 291           catch (CannotProceed ex)
 292             {
 293               out = rh.createExceptionReply();
 294               CannotProceedHelper.write(out, ex);
 295             }
 296           catch (InvalidName ex)
 297             {
 298               out = rh.createExceptionReply();
 299               InvalidNameHelper.write(out, ex);
 300             }
 301           break;
 302         }
 303
 304         case 6 : // new_context
 305         {
 306           NamingContext __result = null;
 307           __result = new_context();
 308           out = rh.createReply();
 309           NamingContextHelper.write(out, __result);
 310           break;
 311         }
 312
 313         case 7 : // bind_new_context
 314         {
 315           try
 316             {
 317               NameComponent[] a_name = NameHelper.read(in);
 318               NamingContext __result = null;
 319               __result = bind_new_context(a_name);
 320               out = rh.createReply();
 321               NamingContextHelper.write(out, __result);
 322             }
 323           catch (NotFound ex)
 324             {
 325               out = rh.createExceptionReply();
 326               NotFoundHelper.write(out, ex);
 327             }
 328           catch (AlreadyBound ex)
 329             {
 330               out = rh.createExceptionReply();
 331               AlreadyBoundHelper.write(out, ex);
 332             }
 333           catch (CannotProceed ex)
 334             {
 335               out = rh.createExceptionReply();
 336               CannotProceedHelper.write(out, ex);
 337             }
 338           catch (InvalidName ex)
 339             {
 340               out = rh.createExceptionReply();
 341               InvalidNameHelper.write(out, ex);
 342             }
 343           break;
 344         }
 345
 346         case 8 : // destroy
 347         {
 348           try
 349             {
 350               destroy();
 351               out = rh.createReply();
 352             }
 353           catch (NotEmpty ex)
 354             {
 355               out = rh.createExceptionReply();
 356               NotEmptyHelper.write(out, ex);
 357             }
 358           break;
 359         }
 360
 361         case 9 : // list
 362         {
 363           int amount = in.read_ulong();
 364           BindingListHolder a_list = new BindingListHolder();
 365           BindingIteratorHolder an_iter = new BindingIteratorHolder();
 366           list(amount, a_list, an_iter);
 367           out = rh.createReply();
 368           BindingListHelper.write(out, a_list.value);
 369           BindingIteratorHelper.write(out, an_iter.value);
 370           break;
 371         }
 372
 373         default :
 374           throw new BAD_OPERATION(0, CompletionStatus.COMPLETED_MAYBE);
 375       }
 376
 377     return out;
 378   }
 379
 380   /**
 381    * The obsolete invocation using server request. Implemented for
 382    * compatibility reasons, but is it more effectinve to use
 383    * {@link #_invoke}.
 384    *
 385    * @param request a server request.
 386    */
 387   public void invoke(ServerRequest request)
 388   {
 389     Streamable result = null;
 390
 391     // The server request contains no required result type.
 392     Integer call_method = (Integer) methods.get(request.operation());
 393     if (call_method == null)
 394       throw new BAD_OPERATION(Minor.Method, CompletionStatus.COMPLETED_MAYBE);
 395
 396     switch (call_method.intValue())
 397       {
 398         case 4 : // resolve, object
 399           result = new ObjectHolder();
 400           break;
 401
 402         case 6 : // new_context, NamingContext
 403         case 7 : // bind_new_context, NamingContext
 404         {
 405           result = new NamingContextHolder();
 406           break;
 407         }
 408
 409         default : // void for others.
 410           result = null;
 411       }
 412
 413     gnu.CORBA.ServiceRequestAdapter.invoke(request, this, result);
 414   }
 415 }