001/* ObjectImpl.java -- 002 Copyright (C) 2005, 2006 Free Software Foundation, Inc. 003 004This file is part of GNU Classpath. 005 006GNU Classpath is free software; you can redistribute it and/or modify 007it under the terms of the GNU General Public License as published by 008the Free Software Foundation; either version 2, or (at your option) 009any later version. 010 011GNU Classpath is distributed in the hope that it will be useful, but 012WITHOUT ANY WARRANTY; without even the implied warranty of 013MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 014General Public License for more details. 015 016You should have received a copy of the GNU General Public License 017along with GNU Classpath; see the file COPYING. If not, write to the 018Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 01902110-1301 USA. 020 021Linking this library statically or dynamically with other modules is 022making a combined work based on this library. Thus, the terms and 023conditions of the GNU General Public License cover the whole 024combination. 025 026As a special exception, the copyright holders of this library give you 027permission to link this library with independent modules to produce an 028executable, regardless of the license terms of these independent 029modules, and to copy and distribute the resulting executable under 030terms of your choice, provided that you also meet, for each linked 031independent module, the terms and conditions of the license of that 032module. An independent module is a module which is not derived from 033or based on this library. If you modify this library, you may extend 034this exception to your version of the library, but you are not 035obligated to do so. If you do not wish to do so, delete this 036exception statement from your version. */ 037 038 039package org.omg.CORBA.portable; 040 041import org.omg.CORBA.BAD_PARAM; 042import org.omg.CORBA.Context; 043import org.omg.CORBA.ContextList; 044import org.omg.CORBA.DomainManager; 045import org.omg.CORBA.ExceptionList; 046import org.omg.CORBA.NVList; 047import org.omg.CORBA.NamedValue; 048import org.omg.CORBA.ORB; 049import org.omg.CORBA.Policy; 050import org.omg.CORBA.Request; 051import org.omg.CORBA.SetOverrideType; 052 053/** 054 * The basic implementation of the CORBA Object. The most of the methods 055 * delegate the functionality to the {@link Delegate} that can be replaced 056 * by {@link #_set_delegate(Delegate)}. 057 * 058 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org) 059 */ 060public abstract class ObjectImpl 061 implements org.omg.CORBA.Object 062{ 063 /** 064 * The delegate, responsible for the method implementations. 065 */ 066 transient Delegate delegate; 067 068 /** 069 * Create a request to invoke the method of this object, specifying 070 * context list and the list of the expected exception. 071 * 072 * @param context a list of additional properties. 073 * @param operation the name of method to be invoked. 074 * @param parameters the method parameters. 075 * @param returns the container for tge method returned value. 076 * @param exceptions the list of the possible exceptions that the method 077 * can throw. 078 * @param ctx_list the list of the context strings that need to be 079 * resolved and send as a context instance. 080 * 081 * @return the created reaquest. 082 */ 083 public Request _create_request(Context context, String operation, 084 NVList parameters, NamedValue returns, 085 ExceptionList exceptions, ContextList ctx_list 086 ) 087 { 088 return delegate.create_request(this, context, operation, parameters, 089 returns, exceptions, ctx_list 090 ); 091 } 092 093 /** 094 * Create a request to invoke the method of this object. 095 * 096 * @param context a list of additional properties. 097 * @param operation the name of method to be invoked. 098 * @param parameters the method parameters. 099 * @param returns the container for tge method returned value. 100 * 101 * @return the created reaquest. 102 */ 103 public Request _create_request(Context context, String operation, 104 NVList parameters, NamedValue returns 105 ) 106 { 107 return delegate.create_request(this, context, operation, parameters, returns); 108 } 109 110 /** 111 * Duplicate the object reference. This does not make much sense for 112 * java platform and is just included for the sake of compliance with 113 * CORBA APIs. 114 * 115 * The method may return the object reference itself. 116 * 117 * @return as a rule, <code>this</code>. 118 */ 119 public org.omg.CORBA.Object _duplicate() 120 { 121 return delegate.duplicate(this); 122 } 123 124 /** 125 * Get vendor specific delegate, responsible for the implemented 126 * functionality. 127 */ 128 public Delegate _get_delegate() 129 { 130 return delegate; 131 } 132 133 /** 134 * Retrieve the domain managers for this object. 135 * 136 * @return the domain managers. 137 */ 138 public DomainManager[] _get_domain_managers() 139 { 140 return delegate.get_domain_managers(this); 141 } 142 143 /** 144 * Get the <code>InterfaceDef</code> for this Object. 145 */ 146 public org.omg.CORBA.Object _get_interface_def() 147 { 148 return delegate.get_interface_def(this); 149 } 150 151 /** 152 * Returns the {@link Policy}, applying to this object. 153 * 154 * @param a_policy_type a type of policy to be obtained. 155 * @return a corresponding Policy object. 156 * 157 * @throws BAD_PARAM if the policy of the given type is not 158 * associated with this object, or if it is not supported by this ORB. 159 */ 160 public Policy _get_policy(int a_policy_type) 161 { 162 return delegate.get_policy(this, a_policy_type); 163 } 164 165 /** 166 * Get the array of interface repository ids, defining this object. 167 */ 168 public abstract String[] _ids(); 169 170 /** 171 * Get the hashcode this object reference. The same hashcode still 172 * does not means that the references are the same. From the other 173 * side, two different references may still refer to the same CORBA 174 * object. The returned value must not change during the object 175 * lifetime. 176 * 177 * @param max the maximal value to return. 178 * 179 * @return the hashcode. 180 */ 181 public int _hash(int max) 182 { 183 return delegate.hash(this, max); 184 } 185 186 /** 187 * Invoke the operation. 188 * 189 * @param output the stream, containing the written arguments. 190 * 191 * @return the stream, from where the input parameters could be read. 192 * 193 * @throws ApplicationException if the application throws an exception, 194 * defined as a part of its remote method definition. 195 * 196 * @throws RemarshalException if reading(remarshalling) fails. 197 */ 198 public InputStream _invoke(OutputStream output) 199 throws org.omg.CORBA.portable.ApplicationException, 200 org.omg.CORBA.portable.RemarshalException 201 { 202 return delegate.invoke(this, output); 203 } 204 205 /** 206 * Check if this object can be referenced by the given repository id. 207 * 208 * @param idl_id the repository id. 209 * 210 * @return true if the passed parameter is a repository id of this 211 * CORBA object. 212 */ 213 public boolean _is_a(String idl_id) 214 { 215 return delegate.is_a(this, idl_id); 216 } 217 218 /** 219 * Return true if the other object references are equivalent, so far as 220 * it is possible to determine this easily. 221 * 222 * @param other the other object reference. 223 * 224 * @return true if both references refer the same object, false 225 * if they probably can refer different objects. Uses direct 226 * comparison if the delegate has not been set. 227 */ 228 public boolean _is_equivalent(org.omg.CORBA.Object other) 229 { 230 return (delegate == null) ? this == other 231 : delegate.is_equivalent(this, other); 232 } 233 234 /** 235 * Returns true if the object is local. 236 * 237 * @return false, always (following 1.4 specs). Override to get 238 * functionality. 239 */ 240 public boolean _is_local() 241 { 242 return delegate.is_local(this); 243 } 244 245 /** 246 * Determines if the server object for this reference has already 247 * been destroyed. 248 * 249 * @return true if the object has been destroyed, false otherwise. 250 */ 251 public boolean _non_existent() 252 { 253 return delegate.non_existent(this); 254 } 255 256 /** 257 * Provides the reference to ORB. 258 * 259 * @return the associated ORB. 260 */ 261 public ORB _orb() 262 { 263 return delegate.orb(this); 264 } 265 266 /** 267 * Free resoureces, occupied by this reference. The object implementation 268 * is not notified, and the other references to the same object are not 269 * affected. 270 */ 271 public void _release() 272 { 273 delegate.release(this); 274 } 275 276 /** 277 * Release the reply stream back to ORB after finishing reading the data 278 * from it. 279 * 280 * @param stream the stream, normally returned by {@link #_invoke} or 281 * {@link ApplicationException#getInputStream()}, can be null. 282 */ 283 public void _releaseReply(InputStream stream) 284 { 285 if (delegate != null) 286 delegate.releaseReply(this, stream); 287 } 288 289 /** 290 * Create a request to invoke the method of this CORBA object. 291 * 292 * @param method the name of the method to invoke. 293 * 294 * @return the request. 295 */ 296 public Request _request(String method) 297 { 298 return delegate.request(this, method); 299 } 300 301 /** 302 * Create a request to invoke the method of this CORBA object. 303 * 304 * @param method the name of the method to invoke. 305 * @param response_expected specifies if this is one way message or the 306 * response to the message is expected. 307 * 308 * @return the stream where the method arguments should be written. 309 */ 310 public org.omg.CORBA.portable.OutputStream _request(String method, 311 boolean response_expected 312 ) 313 { 314 return delegate.request(this, method, response_expected); 315 } 316 317 /** 318 * This method is always called after invoking the operation on the 319 * local servant. 320 * 321 * The default method returns without action. 322 * 323 * @param servant the servant. 324 */ 325 public void _servant_postinvoke(ServantObject servant) 326 { 327 delegate.servant_postinvoke(this, servant); 328 } 329 330 /** 331 * Returns a servant that should be used for this request. 332 * The servant can also be casted to the expected type, calling the 333 * required method directly. 334 * 335 * @param method the operation 336 * @param expected_type the expected type of the servant. 337 * 338 * This implementation always returns null; override for different 339 * behavior. 340 * 341 * @return the servant or null if the servant is not an expected type 342 * of the method is not supported, for example, due security reasons. 343 */ 344 public ServantObject _servant_preinvoke(String method, Class expected_type) 345 { 346 return delegate.servant_preinvoke(this, method, expected_type); 347 } 348 349 /** 350 * Set the delegate, responsible for the implemented functionality. 351 * 352 * @param a_delegate a delegate, responsible for the implemented 353 * functionality. 354 */ 355 public void _set_delegate(Delegate a_delegate) 356 { 357 delegate = a_delegate; 358 } 359 360 /** 361 * Returns a new object with the new policies either replacing or 362 * extending the current policies, depending on the second parameter. 363 * 364 * @param policies the policy additions or replacements. 365 * @param how either {@link SetOverrideType#SET_OVERRIDE} to override the 366 * current policies of {@link SetOverrideType#ADD_OVERRIDE} to replace 367 * them. 368 */ 369 public org.omg.CORBA.Object _set_policy_override(Policy[] policies, 370 SetOverrideType how 371 ) 372 { 373 return delegate.set_policy_override(this, policies, how); 374 } 375 376 /** 377 * Check if this object is equal to another object. 378 * 379 * @param other the other object to compare. 380 * 381 * @return true if the objects are equal. 382 */ 383 public boolean equals(java.lang.Object other) 384 { 385 if (delegate == null) 386 return this == other; 387 else 388 return delegate.equals(this, other); 389 } 390 391 /** 392 * Return the string representation of the passed object. 393 * 394 * @return the string representation. 395 */ 396 public String toString() 397 { 398 return delegate.toString(this); 399 } 400}