J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. Sun designates this |
| 8 | * particular file as subject to the "Classpath" exception as provided |
| 9 | * by Sun in the LICENSE file that accompanied this code. |
| 10 | * |
| 11 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 12 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 13 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 14 | * version 2 for more details (a copy is included in the LICENSE file that |
| 15 | * accompanied this code). |
| 16 | * |
| 17 | * You should have received a copy of the GNU General Public License version |
| 18 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 19 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 20 | * |
| 21 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 22 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 23 | * have any questions. |
| 24 | */ |
| 25 | |
| 26 | package java.rmi.activation; |
| 27 | |
| 28 | import java.rmi.MarshalledObject; |
| 29 | import java.rmi.NoSuchObjectException; |
| 30 | import java.rmi.Remote; |
| 31 | import java.rmi.RemoteException; |
| 32 | import java.rmi.activation.UnknownGroupException; |
| 33 | import java.rmi.activation.UnknownObjectException; |
| 34 | import java.rmi.server.RMIClientSocketFactory; |
| 35 | import java.rmi.server.RMIServerSocketFactory; |
| 36 | import java.rmi.server.RemoteServer; |
| 37 | import sun.rmi.server.ActivatableServerRef; |
| 38 | |
| 39 | /** |
| 40 | * The <code>Activatable</code> class provides support for remote |
| 41 | * objects that require persistent access over time and that |
| 42 | * can be activated by the system. |
| 43 | * |
| 44 | * <p>For the constructors and static <code>exportObject</code> methods, |
| 45 | * the stub for a remote object being exported is obtained as described in |
| 46 | * {@link java.rmi.server.UnicastRemoteObject}. |
| 47 | * |
| 48 | * <p>An attempt to serialize explicitly an instance of this class will |
| 49 | * fail. |
| 50 | * |
| 51 | * @author Ann Wollrath |
| 52 | * @since 1.2 |
| 53 | * @serial exclude |
| 54 | */ |
| 55 | public abstract class Activatable extends RemoteServer { |
| 56 | |
| 57 | private ActivationID id; |
| 58 | /** indicate compatibility with the Java 2 SDK v1.2 version of class */ |
| 59 | private static final long serialVersionUID = -3120617863591563455L; |
| 60 | |
| 61 | /** |
| 62 | * Constructs an activatable remote object by registering |
| 63 | * an activation descriptor (with the specified location, data, and |
| 64 | * restart mode) for this object, and exporting the object with the |
| 65 | * specified port. |
| 66 | * |
| 67 | * <p><strong>Note:</strong> Using the <code>Activatable</code> |
| 68 | * constructors that both register and export an activatable remote |
| 69 | * object is strongly discouraged because the actions of registering |
| 70 | * and exporting the remote object are <i>not</i> guaranteed to be |
| 71 | * atomic. Instead, an application should register an activation |
| 72 | * descriptor and export a remote object separately, so that exceptions |
| 73 | * can be handled properly. |
| 74 | * |
| 75 | * <p>This method invokes the {@link |
| 76 | * exportObject(Remote,String,MarshalledObject,boolean,port) |
| 77 | * exportObject} method with this object, and the specified location, |
| 78 | * data, restart mode, and port. Subsequent calls to {@link #getID} |
| 79 | * will return the activation identifier returned from the call to |
| 80 | * <code>exportObject</code>. |
| 81 | * |
| 82 | * @param location the location for classes for this object |
| 83 | * @param data the object's initialization data |
| 84 | * @param port the port on which the object is exported (an anonymous |
| 85 | * port is used if port=0) |
| 86 | * @param restart if true, the object is restarted (reactivated) when |
| 87 | * either the activator is restarted or the object's activation group |
| 88 | * is restarted after an unexpected crash; if false, the object is only |
| 89 | * activated on demand. Specifying <code>restart</code> to be |
| 90 | * <code>true</code> does not force an initial immediate activation of |
| 91 | * a newly registered object; initial activation is lazy. |
| 92 | * @exception ActivationException if object registration fails. |
| 93 | * @exception RemoteException if either of the following fails: |
| 94 | * a) registering the object with the activation system or b) exporting |
| 95 | * the object to the RMI runtime. |
| 96 | * @since 1.2 |
| 97 | **/ |
| 98 | protected Activatable(String location, |
| 99 | MarshalledObject<?> data, |
| 100 | boolean restart, |
| 101 | int port) |
| 102 | throws ActivationException, RemoteException |
| 103 | { |
| 104 | super(); |
| 105 | id = exportObject(this, location, data, restart, port); |
| 106 | } |
| 107 | |
| 108 | /** |
| 109 | * Constructs an activatable remote object by registering |
| 110 | * an activation descriptor (with the specified location, data, and |
| 111 | * restart mode) for this object, and exporting the object with the |
| 112 | * specified port, and specified client and server socket factories. |
| 113 | * |
| 114 | * <p><strong>Note:</strong> Using the <code>Activatable</code> |
| 115 | * constructors that both register and export an activatable remote |
| 116 | * object is strongly discouraged because the actions of registering |
| 117 | * and exporting the remote object are <i>not</i> guaranteed to be |
| 118 | * atomic. Instead, an application should register an activation |
| 119 | * descriptor and export a remote object separately, so that exceptions |
| 120 | * can be handled properly. |
| 121 | * |
| 122 | * <p>This method invokes the {@link |
| 123 | * exportObject(Remote,String,MarshalledObject,boolean,port,RMIClientSocketFactory,RMIServerSocketFactory) |
| 124 | * exportObject} method with this object, and the specified location, |
| 125 | * data, restart mode, port, and client and server socket factories. |
| 126 | * Subsequent calls to {@link #getID} will return the activation |
| 127 | * identifier returned from the call to <code>exportObject</code>. |
| 128 | * |
| 129 | * @param location the location for classes for this object |
| 130 | * @param data the object's initialization data |
| 131 | * @param restart if true, the object is restarted (reactivated) when |
| 132 | * either the activator is restarted or the object's activation group |
| 133 | * is restarted after an unexpected crash; if false, the object is only |
| 134 | * activated on demand. Specifying <code>restart</code> to be |
| 135 | * <code>true</code> does not force an initial immediate activation of |
| 136 | * a newly registered object; initial activation is lazy. |
| 137 | * @param port the port on which the object is exported (an anonymous |
| 138 | * port is used if port=0) |
| 139 | * @param csf the client-side socket factory for making calls to the |
| 140 | * remote object |
| 141 | * @param ssf the server-side socket factory for receiving remote calls |
| 142 | * @exception ActivationException if object registration fails. |
| 143 | * @exception RemoteException if either of the following fails: |
| 144 | * a) registering the object with the activation system or b) exporting |
| 145 | * the object to the RMI runtime. |
| 146 | * @since 1.2 |
| 147 | **/ |
| 148 | protected Activatable(String location, |
| 149 | MarshalledObject<?> data, |
| 150 | boolean restart, |
| 151 | int port, |
| 152 | RMIClientSocketFactory csf, |
| 153 | RMIServerSocketFactory ssf) |
| 154 | throws ActivationException, RemoteException |
| 155 | { |
| 156 | super(); |
| 157 | id = exportObject(this, location, data, restart, port, csf, ssf); |
| 158 | } |
| 159 | |
| 160 | /** |
| 161 | * Constructor used to activate/export the object on a specified |
| 162 | * port. An "activatable" remote object must have a constructor that |
| 163 | * takes two arguments: <ul> |
| 164 | * <li>the object's activation identifier (<code>ActivationID</code>), and |
| 165 | * <li>the object's initialization data (a <code>MarshalledObject</code>). |
| 166 | * </ul><p> |
| 167 | * |
| 168 | * A concrete subclass of this class must call this constructor when it is |
| 169 | * <i>activated</i> via the two parameter constructor described above. As |
| 170 | * a side-effect of construction, the remote object is "exported" |
| 171 | * to the RMI runtime (on the specified <code>port</code>) and is |
| 172 | * available to accept incoming calls from clients. |
| 173 | * |
| 174 | * @param id activation identifier for the object |
| 175 | * @param port the port number on which the object is exported |
| 176 | * @exception RemoteException if exporting the object to the RMI |
| 177 | * runtime fails |
| 178 | * @since 1.2 |
| 179 | */ |
| 180 | protected Activatable(ActivationID id, int port) |
| 181 | throws RemoteException |
| 182 | { |
| 183 | super(); |
| 184 | this.id = id; |
| 185 | exportObject(this, id, port); |
| 186 | } |
| 187 | |
| 188 | /** |
| 189 | * Constructor used to activate/export the object on a specified |
| 190 | * port. An "activatable" remote object must have a constructor that |
| 191 | * takes two arguments: <ul> |
| 192 | * <li>the object's activation identifier (<code>ActivationID</code>), and |
| 193 | * <li>the object's initialization data (a <code>MarshalledObject</code>). |
| 194 | * </ul><p> |
| 195 | * |
| 196 | * A concrete subclass of this class must call this constructor when it is |
| 197 | * <i>activated</i> via the two parameter constructor described above. As |
| 198 | * a side-effect of construction, the remote object is "exported" |
| 199 | * to the RMI runtime (on the specified <code>port</code>) and is |
| 200 | * available to accept incoming calls from clients. |
| 201 | * |
| 202 | * @param id activation identifier for the object |
| 203 | * @param port the port number on which the object is exported |
| 204 | * @param csf the client-side socket factory for making calls to the |
| 205 | * remote object |
| 206 | * @param ssf the server-side socket factory for receiving remote calls |
| 207 | * @exception RemoteException if exporting the object to the RMI |
| 208 | * runtime fails |
| 209 | * @since 1.2 |
| 210 | */ |
| 211 | protected Activatable(ActivationID id, int port, |
| 212 | RMIClientSocketFactory csf, |
| 213 | RMIServerSocketFactory ssf) |
| 214 | throws RemoteException |
| 215 | { |
| 216 | super(); |
| 217 | this.id = id; |
| 218 | exportObject(this, id, port, csf, ssf); |
| 219 | } |
| 220 | |
| 221 | /** |
| 222 | * Returns the object's activation identifier. The method is |
| 223 | * protected so that only subclasses can obtain an object's |
| 224 | * identifier. |
| 225 | * @return the object's activation identifier |
| 226 | * @since 1.2 |
| 227 | */ |
| 228 | protected ActivationID getID() { |
| 229 | return id; |
| 230 | } |
| 231 | |
| 232 | /** |
| 233 | * Register an object descriptor for an activatable remote |
| 234 | * object so that is can be activated on demand. |
| 235 | * |
| 236 | * @param desc the object's descriptor |
| 237 | * @return the stub for the activatable remote object |
| 238 | * @exception UnknownGroupException if group id in <code>desc</code> |
| 239 | * is not registered with the activation system |
| 240 | * @exception ActivationException if activation system is not running |
| 241 | * @exception RemoteException if remote call fails |
| 242 | * @since 1.2 |
| 243 | */ |
| 244 | public static Remote register(ActivationDesc desc) |
| 245 | throws UnknownGroupException, ActivationException, RemoteException |
| 246 | { |
| 247 | // register object with activator. |
| 248 | ActivationID id = |
| 249 | ActivationGroup.getSystem().registerObject(desc); |
| 250 | return sun.rmi.server.ActivatableRef.getStub(desc, id); |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Informs the system that the object with the corresponding activation |
| 255 | * <code>id</code> is currently inactive. If the object is currently |
| 256 | * active, the object is "unexported" from the RMI runtime (only if |
| 257 | * there are no pending or in-progress calls) |
| 258 | * so the that it can no longer receive incoming calls. This call |
| 259 | * informs this VM's ActivationGroup that the object is inactive, |
| 260 | * that, in turn, informs its ActivationMonitor. If this call |
| 261 | * completes successfully, a subsequent activate request to the activator |
| 262 | * will cause the object to reactivate. The operation may still |
| 263 | * succeed if the object is considered active but has already |
| 264 | * unexported itself. |
| 265 | * |
| 266 | * @param id the object's activation identifier |
| 267 | * @return true if the operation succeeds (the operation will |
| 268 | * succeed if the object in currently known to be active and is |
| 269 | * either already unexported or is currently exported and has no |
| 270 | * pending/executing calls); false is returned if the object has |
| 271 | * pending/executing calls in which case it cannot be deactivated |
| 272 | * @exception UnknownObjectException if object is not known (it may |
| 273 | * already be inactive) |
| 274 | * @exception ActivationException if group is not active |
| 275 | * @exception RemoteException if call informing monitor fails |
| 276 | * @since 1.2 |
| 277 | */ |
| 278 | public static boolean inactive(ActivationID id) |
| 279 | throws UnknownObjectException, ActivationException, RemoteException |
| 280 | { |
| 281 | return ActivationGroup.currentGroup().inactiveObject(id); |
| 282 | } |
| 283 | |
| 284 | /** |
| 285 | * Revokes previous registration for the activation descriptor |
| 286 | * associated with <code>id</code>. An object can no longer be |
| 287 | * activated via that <code>id</code>. |
| 288 | * |
| 289 | * @param id the object's activation identifier |
| 290 | * @exception UnknownObjectException if object (<code>id</code>) is unknown |
| 291 | * @exception ActivationException if activation system is not running |
| 292 | * @exception RemoteException if remote call to activation system fails |
| 293 | * @since 1.2 |
| 294 | */ |
| 295 | public static void unregister(ActivationID id) |
| 296 | throws UnknownObjectException, ActivationException, RemoteException |
| 297 | { |
| 298 | ActivationGroup.getSystem().unregisterObject(id); |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Registers an activation descriptor (with the specified location, |
| 303 | * data, and restart mode) for the specified object, and exports that |
| 304 | * object with the specified port. |
| 305 | * |
| 306 | * <p><strong>Note:</strong> Using this method (as well as the |
| 307 | * <code>Activatable</code> constructors that both register and export |
| 308 | * an activatable remote object) is strongly discouraged because the |
| 309 | * actions of registering and exporting the remote object are |
| 310 | * <i>not</i> guaranteed to be atomic. Instead, an application should |
| 311 | * register an activation descriptor and export a remote object |
| 312 | * separately, so that exceptions can be handled properly. |
| 313 | * |
| 314 | * <p>This method invokes the {@link |
| 315 | * exportObject(Remote,String,MarshalledObject,boolean,port,RMIClientSocketFactory,RMIServerSocketFactory) |
| 316 | * exportObject} method with the specified object, location, data, |
| 317 | * restart mode, and port, and <code>null</code> for both client and |
| 318 | * server socket factories, and then returns the resulting activation |
| 319 | * identifier. |
| 320 | * |
| 321 | * @param obj the object being exported |
| 322 | * @param location the object's code location |
| 323 | * @param data the object's bootstrapping data |
| 324 | * @param restart if true, the object is restarted (reactivated) when |
| 325 | * either the activator is restarted or the object's activation group |
| 326 | * is restarted after an unexpected crash; if false, the object is only |
| 327 | * activated on demand. Specifying <code>restart</code> to be |
| 328 | * <code>true</code> does not force an initial immediate activation of |
| 329 | * a newly registered object; initial activation is lazy. |
| 330 | * @param port the port on which the object is exported (an anonymous |
| 331 | * port is used if port=0) |
| 332 | * @return the activation identifier obtained from registering the |
| 333 | * descriptor, <code>desc</code>, with the activation system |
| 334 | * the wrong group |
| 335 | * @exception ActivationException if activation group is not active |
| 336 | * @exception RemoteException if object registration or export fails |
| 337 | * @since 1.2 |
| 338 | **/ |
| 339 | public static ActivationID exportObject(Remote obj, |
| 340 | String location, |
| 341 | MarshalledObject<?> data, |
| 342 | boolean restart, |
| 343 | int port) |
| 344 | throws ActivationException, RemoteException |
| 345 | { |
| 346 | return exportObject(obj, location, data, restart, port, null, null); |
| 347 | } |
| 348 | |
| 349 | /** |
| 350 | * Registers an activation descriptor (with the specified location, |
| 351 | * data, and restart mode) for the specified object, and exports that |
| 352 | * object with the specified port, and the specified client and server |
| 353 | * socket factories. |
| 354 | * |
| 355 | * <p><strong>Note:</strong> Using this method (as well as the |
| 356 | * <code>Activatable</code> constructors that both register and export |
| 357 | * an activatable remote object) is strongly discouraged because the |
| 358 | * actions of registering and exporting the remote object are |
| 359 | * <i>not</i> guaranteed to be atomic. Instead, an application should |
| 360 | * register an activation descriptor and export a remote object |
| 361 | * separately, so that exceptions can be handled properly. |
| 362 | * |
| 363 | * <p>This method first registers an activation descriptor for the |
| 364 | * specified object as follows. It obtains the activation system by |
| 365 | * invoking the method {@link ActivationGroup#getSystem |
| 366 | * ActivationGroup.getSystem}. This method then obtains an {@link |
| 367 | * ActivationID} for the object by invoking the activation system's |
| 368 | * {@link ActivationSystem#registerObject registerObject} method with |
| 369 | * an {@link ActivationDesc} constructed with the specified object's |
| 370 | * class name, and the specified location, data, and restart mode. If |
| 371 | * an exception occurs obtaining the activation system or registering |
| 372 | * the activation descriptor, that exception is thrown to the caller. |
| 373 | * |
| 374 | * <p>Next, this method exports the object by invoking the {@link |
| 375 | * #exportObject(Remote,ActivationID,int,RMIClientSocketFactory,RMIServerSocketFactory) |
| 376 | * exportObject} method with the specified remote object, the |
| 377 | * activation identifier obtained from registration, the specified |
| 378 | * port, and the specified client and server socket factories. If an |
| 379 | * exception occurs exporting the object, this method attempts to |
| 380 | * unregister the activation identifier (obtained from registration) by |
| 381 | * invoking the activation system's {@link |
| 382 | * ActivationSystem#unregisterObject unregisterObject} method with the |
| 383 | * activation identifier. If an exception occurs unregistering the |
| 384 | * identifier, that exception is ignored, and the original exception |
| 385 | * that occurred exporting the object is thrown to the caller. |
| 386 | * |
| 387 | * <p>Finally, this method invokes the {@link |
| 388 | * ActivationGroup#activeObject activeObject} method on the activation |
| 389 | * group in this VM with the activation identifier and the specified |
| 390 | * remote object, and returns the activation identifier to the caller. |
| 391 | * |
| 392 | * @param obj the object being exported |
| 393 | * @param location the object's code location |
| 394 | * @param data the object's bootstrapping data |
| 395 | * @param restart if true, the object is restarted (reactivated) when |
| 396 | * either the activator is restarted or the object's activation group |
| 397 | * is restarted after an unexpected crash; if false, the object is only |
| 398 | * activated on demand. Specifying <code>restart</code> to be |
| 399 | * <code>true</code> does not force an initial immediate activation of |
| 400 | * a newly registered object; initial activation is lazy. |
| 401 | * @param port the port on which the object is exported (an anonymous |
| 402 | * port is used if port=0) |
| 403 | * @param csf the client-side socket factory for making calls to the |
| 404 | * remote object |
| 405 | * @param ssf the server-side socket factory for receiving remote calls |
| 406 | * @return the activation identifier obtained from registering the |
| 407 | * descriptor with the activation system |
| 408 | * @exception ActivationException if activation group is not active |
| 409 | * @exception RemoteException if object registration or export fails |
| 410 | * @since 1.2 |
| 411 | **/ |
| 412 | public static ActivationID exportObject(Remote obj, |
| 413 | String location, |
| 414 | MarshalledObject<?> data, |
| 415 | boolean restart, |
| 416 | int port, |
| 417 | RMIClientSocketFactory csf, |
| 418 | RMIServerSocketFactory ssf) |
| 419 | throws ActivationException, RemoteException |
| 420 | { |
| 421 | ActivationDesc desc = new ActivationDesc(obj.getClass().getName(), |
| 422 | location, data, restart); |
| 423 | /* |
| 424 | * Register descriptor. |
| 425 | */ |
| 426 | ActivationSystem system = ActivationGroup.getSystem(); |
| 427 | ActivationID id = system.registerObject(desc); |
| 428 | |
| 429 | /* |
| 430 | * Export object. |
| 431 | */ |
| 432 | try { |
| 433 | exportObject(obj, id, port, csf, ssf); |
| 434 | } catch (RemoteException e) { |
| 435 | /* |
| 436 | * Attempt to unregister activation descriptor because export |
| 437 | * failed and register/export should be atomic (see 4323621). |
| 438 | */ |
| 439 | try { |
| 440 | system.unregisterObject(id); |
| 441 | } catch (Exception ex) { |
| 442 | } |
| 443 | /* |
| 444 | * Report original exception. |
| 445 | */ |
| 446 | throw e; |
| 447 | } |
| 448 | |
| 449 | /* |
| 450 | * This call can't fail (it is a local call, and the only possible |
| 451 | * exception, thrown if the group is inactive, will not be thrown |
| 452 | * because the group is not inactive). |
| 453 | */ |
| 454 | ActivationGroup.currentGroup().activeObject(id, obj); |
| 455 | |
| 456 | return id; |
| 457 | } |
| 458 | |
| 459 | /** |
| 460 | * Export the activatable remote object to the RMI runtime to make |
| 461 | * the object available to receive incoming calls. The object is |
| 462 | * exported on an anonymous port, if <code>port</code> is zero. <p> |
| 463 | * |
| 464 | * During activation, this <code>exportObject</code> method should |
| 465 | * be invoked explicitly by an "activatable" object, that does not |
| 466 | * extend the <code>Activatable</code> class. There is no need for objects |
| 467 | * that do extend the <code>Activatable</code> class to invoke this |
| 468 | * method directly because the object is exported during construction. |
| 469 | * |
| 470 | * @return the stub for the activatable remote object |
| 471 | * @param obj the remote object implementation |
| 472 | * @param id the object's activation identifier |
| 473 | * @param port the port on which the object is exported (an anonymous |
| 474 | * port is used if port=0) |
| 475 | * @exception RemoteException if object export fails |
| 476 | * @since 1.2 |
| 477 | */ |
| 478 | public static Remote exportObject(Remote obj, |
| 479 | ActivationID id, |
| 480 | int port) |
| 481 | throws RemoteException |
| 482 | { |
| 483 | return exportObject(obj, new ActivatableServerRef(id, port)); |
| 484 | } |
| 485 | |
| 486 | /** |
| 487 | * Export the activatable remote object to the RMI runtime to make |
| 488 | * the object available to receive incoming calls. The object is |
| 489 | * exported on an anonymous port, if <code>port</code> is zero. <p> |
| 490 | * |
| 491 | * During activation, this <code>exportObject</code> method should |
| 492 | * be invoked explicitly by an "activatable" object, that does not |
| 493 | * extend the <code>Activatable</code> class. There is no need for objects |
| 494 | * that do extend the <code>Activatable</code> class to invoke this |
| 495 | * method directly because the object is exported during construction. |
| 496 | * |
| 497 | * @return the stub for the activatable remote object |
| 498 | * @param obj the remote object implementation |
| 499 | * @param id the object's activation identifier |
| 500 | * @param port the port on which the object is exported (an anonymous |
| 501 | * port is used if port=0) |
| 502 | * @param csf the client-side socket factory for making calls to the |
| 503 | * remote object |
| 504 | * @param ssf the server-side socket factory for receiving remote calls |
| 505 | * @exception RemoteException if object export fails |
| 506 | * @since 1.2 |
| 507 | */ |
| 508 | public static Remote exportObject(Remote obj, |
| 509 | ActivationID id, |
| 510 | int port, |
| 511 | RMIClientSocketFactory csf, |
| 512 | RMIServerSocketFactory ssf) |
| 513 | throws RemoteException |
| 514 | { |
| 515 | return exportObject(obj, new ActivatableServerRef(id, port, csf, ssf)); |
| 516 | } |
| 517 | |
| 518 | /** |
| 519 | * Remove the remote object, obj, from the RMI runtime. If |
| 520 | * successful, the object can no longer accept incoming RMI calls. |
| 521 | * If the force parameter is true, the object is forcibly unexported |
| 522 | * even if there are pending calls to the remote object or the |
| 523 | * remote object still has calls in progress. If the force |
| 524 | * parameter is false, the object is only unexported if there are |
| 525 | * no pending or in progress calls to the object. |
| 526 | * |
| 527 | * @param obj the remote object to be unexported |
| 528 | * @param force if true, unexports the object even if there are |
| 529 | * pending or in-progress calls; if false, only unexports the object |
| 530 | * if there are no pending or in-progress calls |
| 531 | * @return true if operation is successful, false otherwise |
| 532 | * @exception NoSuchObjectException if the remote object is not |
| 533 | * currently exported |
| 534 | * @since 1.2 |
| 535 | */ |
| 536 | public static boolean unexportObject(Remote obj, boolean force) |
| 537 | throws NoSuchObjectException |
| 538 | { |
| 539 | return sun.rmi.transport.ObjectTable.unexportObject(obj, force); |
| 540 | } |
| 541 | |
| 542 | /** |
| 543 | * Exports the specified object using the specified server ref. |
| 544 | */ |
| 545 | private static Remote exportObject(Remote obj, ActivatableServerRef sref) |
| 546 | throws RemoteException |
| 547 | { |
| 548 | // if obj extends Activatable, set its ref. |
| 549 | if (obj instanceof Activatable) { |
| 550 | ((Activatable) obj).ref = sref; |
| 551 | |
| 552 | } |
| 553 | return sref.exportObject(obj, null, false); |
| 554 | } |
| 555 | } |