java.rmi.NoSuchObjectException Java Examples

/**
 * Deregisters a server object from the runtime, allowing the object to become
 * available for garbage collection.
 * @param obj the object to unexport.
 * @exception NoSuchObjectException if the remote object is not
 * currently exported.
 */
public void unexportObject(Remote obj)
    throws NoSuchObjectException {

    if (obj == null) {
        throw new NullPointerException("invalid argument");
    }

    if (StubAdapter.isStub(obj) ||
        obj instanceof java.rmi.server.RemoteStub) {
        throw new NoSuchObjectException(
            "Can only unexport a server object.");
    }

    Tie theTie = Util.getTie(obj);
    if (theTie != null) {
        Util.unexportObject(obj);
    } else {
        if (Utility.loadTie(obj) == null) {
            UnicastRemoteObject.unexportObject(obj,true);
        } else {
            throw new NoSuchObjectException("Object not exported.");
        }
    }
}
 

public void unregisterTargetsForORB(org.omg.CORBA.ORB orb)
{
    for (Enumeration e = exportedServants.keys(); e.hasMoreElements(); )
    {
        java.lang.Object key = e.nextElement();
        Remote target = (Remote)(key instanceof Tie ? ((Tie)key).getTarget() : key);

        // Bug 4476347: BAD_OPERATION is thrown if the ties delegate isn't set.
        // We can ignore this because it means the tie is not connected to an ORB.
        try {
            if (orb == getTie(target).orb()) {
                try {
                    unexportObject(target);
                } catch( java.rmi.NoSuchObjectException ex ) {
                    // We neglect this exception if at all if it is
                    // raised. It is not harmful.
                }
            }
        } catch (BAD_OPERATION bad) {
            /* Ignore */
        }
    }
}
 

/**
 * Dispose associated buffer file and unexport this instance.
 */
@Override
public void dispose() {
	if (bufferFile != null) {
		try {
			unexportObject(this, true);
		}
		catch (NoSuchObjectException e) {
			// ignore
		}
		removeOwnerInstance(this);
		removePathInstance(this);
		bufferFile.dispose();
		bufferFile = null;
	}
}
 

@Override
public Remote toStub(final Remote obj) throws NoSuchObjectException {
    if (System.getSecurityManager() == null) {
        return PortableRemoteObject.toStub(obj);
    } else {
        try {
            return AccessController.doPrivileged(new PrivilegedExceptionAction<Remote>() {

                @Override
                public Remote run() throws Exception {
                    return PortableRemoteObject.toStub(obj);
                }
            }, STUB_ACC);
        } catch (PrivilegedActionException e) {
            if (e.getException() instanceof NoSuchObjectException) {
                throw (NoSuchObjectException)e.getException();
            }
            throw new RuntimeException("Unexpected exception type", e.getException());
        }
    }
}
 

/**
 * Remove the remote object, obj, from the RMI runtime. If
 * successful, the object can no longer accept incoming RMI calls.
 * If the force parameter is true, the object is forcibly unexported
 * even if there are pending calls to the remote object or the
 * remote object still has calls in progress.  If the force
 * parameter is false, the object is only unexported if there are
 * no pending or in progress calls to the object.
 *
 * @param obj the remote object to be unexported
 * @param force if true, unexports the object even if there are
 * pending or in-progress calls; if false, only unexports the object
 * if there are no pending or in-progress calls
 * @return true if operation is successful, false otherwise
 * @exception NoSuchObjectException if the remote object is not
 * currently exported
 */
public static boolean unexportObject(Remote obj, boolean force)
     throws java.rmi.NoSuchObjectException
 {
     synchronized (tableLock) {
         Target target = getTarget(obj);
         if (target == null) {
             throw new NoSuchObjectException("object not exported");
         } else {
             if (target.unexport(force)) {
                 removeTarget(target);
                 return true;
             } else {
                 return false;
             }
         }
     }
 }
 

@Override
public Remote toStub(final Remote obj) throws NoSuchObjectException {
    if (System.getSecurityManager() == null) {
        return PortableRemoteObject.toStub(obj);
    } else {
        try {
            return AccessController.doPrivileged(new PrivilegedExceptionAction<Remote>() {

                @Override
                public Remote run() throws Exception {
                    return PortableRemoteObject.toStub(obj);
                }
            }, STUB_ACC);
        } catch (PrivilegedActionException e) {
            if (e.getException() instanceof NoSuchObjectException) {
                throw (NoSuchObjectException)e.getException();
            }
            throw new RuntimeException("Unexpected exception type", e.getException());
        }
    }
}
 

private void checkInactiveGroup() {
    boolean groupMarkedInactive = false;
    synchronized (this) {
        if (active.size() == 0 && lockedIDs.size() == 0 &&
            groupInactive == false)
        {
            groupInactive = true;
            groupMarkedInactive = true;
        }
    }

    if (groupMarkedInactive) {
        try {
            super.inactiveGroup();
        } catch (Exception ignoreDeactivateFailure) {
        }

        try {
            UnicastRemoteObject.unexportObject(this, true);
        } catch (NoSuchObjectException allowUnexportedGroup) {
        }
    }
}
 

/**
 * Deregisters a server object from the runtime, allowing the object to become
 * available for garbage collection.
 * @param obj the object to unexport.
 * @exception NoSuchObjectException if the remote object is not
 * currently exported.
 */
public void unexportObject(Remote obj)
    throws NoSuchObjectException {

    if (obj == null) {
        throw new NullPointerException("invalid argument");
    }

    if (StubAdapter.isStub(obj) ||
        obj instanceof java.rmi.server.RemoteStub) {
        throw new NoSuchObjectException(
            "Can only unexport a server object.");
    }

    Tie theTie = Util.getTie(obj);
    if (theTie != null) {
        Util.unexportObject(obj);
    } else {
        if (Utility.loadTie(obj) == null) {
            UnicastRemoteObject.unexportObject(obj,true);
        } else {
            throw new NoSuchObjectException("Object not exported.");
        }
    }
}
 

/**
 * Dispose handle
 */
public void dispose() {
	synchronized (syncObject) {
		if (!isValid) {
			return;
		}
		terminateTransientCheckouts();
		RepositoryManager.log(repository.getName(), null, "handle disposed", currentUser);
		if (eventQueue != null) {
			synchronized (eventQueue) {
				eventQueue.clear();
				eventQueue.notifyAll();
			}
		}
		try {
			unexportObject(this, true);
		}
		catch (NoSuchObjectException e) {
			// ignore
		}
		repository.dropHandle(this);
		RemoteBufferFileImpl.dispose(this);
		currentUser = null;
		isValid = false;
	}
}
 

public void stop() throws IOException {
	if (connector != null) {
		try {
			connector.stop();
		} finally {
			connector = null;
		}
	}
	if (rmiRegistry != null) {
		try {
			UnicastRemoteObject.unexportObject(rmiRegistry, true);
		} catch (NoSuchObjectException e) {
			throw new IOException("Could not un-export our RMI registry", e);
		} finally {
			rmiRegistry = null;
		}
	}
}
 

public void stop() throws IOException {
	if (connector != null) {
		try {
			connector.stop();
		} finally {
			connector = null;
		}
	}
	if (rmiRegistry != null) {
		try {
			UnicastRemoteObject.unexportObject(rmiRegistry, true);
		} catch (NoSuchObjectException e) {
			throw new IOException("Could not un-export our RMI registry", e);
		} finally {
			rmiRegistry = null;
		}
	}
}
 

private static void testNoConnect(int port, int rmiPort) throws Exception {
    try {
        testConnect(port, rmiPort);
        throw new Exception("Didn't expect the management agent running");
    } catch (Exception e) {
        Throwable t = e;
        while (t != null) {
            if (t instanceof NoSuchObjectException ||
                t instanceof ConnectException ||
                t instanceof SSLHandshakeException) {
                break;
            }
            t = t.getCause();
        }
        if (t == null) {
            throw new Exception("Unexpected exception", e);
        }
    }
}
 

@Override
public Remote toStub(final Remote obj) throws NoSuchObjectException {
    if (System.getSecurityManager() == null) {
        return PortableRemoteObject.toStub(obj);
    } else {
        try {
            return AccessController.doPrivileged(new PrivilegedExceptionAction<Remote>() {

                @Override
                public Remote run() throws Exception {
                    return PortableRemoteObject.toStub(obj);
                }
            }, STUB_ACC);
        } catch (PrivilegedActionException e) {
            if (e.getException() instanceof NoSuchObjectException) {
                throw (NoSuchObjectException)e.getException();
            }
            throw new RuntimeException("Unexpected exception type", e.getException());
        }
    }
}
 

/**
 * Remove the remote object, obj, from the RMI runtime. If
 * successful, the object can no longer accept incoming RMI calls.
 * If the force parameter is true, the object is forcibly unexported
 * even if there are pending calls to the remote object or the
 * remote object still has calls in progress.  If the force
 * parameter is false, the object is only unexported if there are
 * no pending or in progress calls to the object.
 *
 * @param obj the remote object to be unexported
 * @param force if true, unexports the object even if there are
 * pending or in-progress calls; if false, only unexports the object
 * if there are no pending or in-progress calls
 * @return true if operation is successful, false otherwise
 * @exception NoSuchObjectException if the remote object is not
 * currently exported
 */
public static boolean unexportObject(Remote obj, boolean force)
     throws java.rmi.NoSuchObjectException
 {
     synchronized (tableLock) {
         Target target = getTarget(obj);
         if (target == null) {
             throw new NoSuchObjectException("object not exported");
         } else {
             if (target.unexport(force)) {
                 removeTarget(target);
                 return true;
             } else {
                 return false;
             }
         }
     }
 }
 

/**
 * Increment call count.
 */
synchronized void incrementCallCount() throws NoSuchObjectException {

    if (disp != null) {
        callCount ++;
    } else {
        throw new NoSuchObjectException("object not accepting new calls");
    }
}
 

/**
 * Returns the stub for the remote object <code>obj</code> passed
 * as a parameter. This operation is only valid <i>after</i>
 * the object has been exported.
 * @param obj the remote object whose stub is needed
 * @return the stub for the remote object, <code>obj</code>.
 * @exception NoSuchObjectException if the stub for the
 * remote object could not be found.
 * @since 1.2
 */
public static Remote toStub(Remote obj) throws NoSuchObjectException {
    if (obj instanceof RemoteStub ||
        (obj != null &&
         Proxy.isProxyClass(obj.getClass()) &&
         Proxy.getInvocationHandler(obj) instanceof
         RemoteObjectInvocationHandler))
    {
        return obj;
    } else {
        return sun.rmi.transport.ObjectTable.getStub(obj);
    }
}
 

/**
 * Returns a stub for the given server object.
 * @param obj the server object for which a stub is required. Must either be a subclass
 * of PortableRemoteObject or have been previously the target of a call to
 * {@link #exportObject}.
 * @return the most derived stub for the object.
 * @exception NoSuchObjectException if a stub cannot be located for the given server object.
 */
public Remote toStub (Remote obj)
    throws NoSuchObjectException
{
    Remote result = null;
    if (obj == null) {
        throw new NullPointerException("invalid argument");
    }

    // If the class is already an IIOP stub then return it.
    if (StubAdapter.isStub( obj )) {
        return obj;
    }

    // If the class is already a JRMP stub then return it.
    if (obj instanceof java.rmi.server.RemoteStub) {
        return obj;
    }

    // Has it been exported to IIOP?
    Tie theTie = Util.getTie(obj);

    if (theTie != null) {
        result = Utility.loadStub(theTie,null,null,true);
    } else {
        if (Utility.loadTie(obj) == null) {
            result = java.rmi.server.RemoteObject.toStub(obj);
        }
    }

    if (result == null) {
        throw new NoSuchObjectException("object not exported");
    }

    return result;
}
 

@Override
public void domainObjectChanged(DomainObjectChangedEvent ev) {
	// Only concerned about error which will be the only change record
	DomainObjectChangeRecord docr = ev.getChangeRecord(0);
	if (!domainFileErrorOccurred && docr.getEventType() == DomainObject.DO_OBJECT_ERROR) {
		domainFileErrorOccurred = true;
		String msg;
		Throwable t = (Throwable) docr.getNewValue();
		if (t instanceof NoSuchObjectException) {
			msg =
				"Merge is closing due to an unrecoverable error!"
					+ "\nThis error can be caused when your system becomes"
					+ "\nsuspended or due to a server/network problem.";
		}
		else {
			msg =
				"Merge is closing due to an unrecoverable error!"
					+ "\n \nSuch failures are generally due to an IO Error caused"
					+ "\nby the local filesystem or server.";
		}

		//abort();
		Msg.showError(this, tool.getToolFrame(), "Severe Error Condition", msg);
		provider.cancelCallback(true);
		return;
	}
}
 

/**
 * Returns the stub for the remote object <b>obj</b> passed
 * as a parameter. This operation is only valid <i>after</i>
 * the object has been exported.
 *
 * @return the stub for the remote object, <b>obj</b>.
 * @exception NoSuchObjectException if the stub for the
 * remote object could not be found.
 */
public static Remote getStub(Remote impl)
    throws NoSuchObjectException
{
    Target target = getTarget(impl);
    if (target == null) {
        throw new NoSuchObjectException("object not exported");
    } else {
        return target.getStub();
    }
}
 

/**
* The group's <code>inactiveObject</code> method is called
* indirectly via a call to the <code>Activatable.inactive</code>
* method. A remote object implementation must call
* <code>Activatable</code>'s <code>inactive</code> method when
* that object deactivates (the object deems that it is no longer
* active). If the object does not call
* <code>Activatable.inactive</code> when it deactivates, the
* object will never be garbage collected since the group keeps
* strong references to the objects it creates. <p>
*
* The group's <code>inactiveObject</code> method
* unexports the remote object from the RMI runtime so that the
* object can no longer receive incoming RMI calls. This call will
* only succeed if the object has no pending/executing calls. If
* the object does have pending/executing RMI calls, then false
* will be returned.
*
* If the object has no pending/executing calls, the object is
* removed from the RMI runtime and the group informs its
* <code>ActivationMonitor</code> (via the monitor's
* <code>inactiveObject</code> method) that the remote object is
* not currently active so that the remote object will be
* re-activated by the activator upon a subsequent activation
* request.
*
* @param id the object's activation identifier
* @returns true if the operation succeeds (the operation will
* succeed if the object in currently known to be active and is
* either already unexported or is currently exported and has no
* pending/executing calls); false is returned if the object has
* pending/executing calls in which case it cannot be deactivated
* @exception UnknownObjectException if object is unknown (may already
* be inactive)
* @exception RemoteException if call informing monitor fails
*/
public boolean inactiveObject(ActivationID id)
    throws ActivationException, UnknownObjectException, RemoteException
{

    try {
        acquireLock(id);
        synchronized (this) {
            if (groupInactive == true)
                throw new ActivationException("group is inactive");
        }

        ActiveEntry entry = active.get(id);
        if (entry == null) {
            // REMIND: should this be silent?
            throw new UnknownObjectException("object not active");
        }

        try {
            if (Activatable.unexportObject(entry.impl, false) == false)
                return false;
        } catch (NoSuchObjectException allowUnexportedObjects) {
        }

        try {
            super.inactiveObject(id);
        } catch (UnknownObjectException allowUnregisteredObjects) {
        }

        active.remove(id);

    } finally {
        releaseLock(id);
        checkInactiveGroup();
    }

    return true;
}
 

/**
 * Unexport the registered RMI object, logging any exception that arises.
 */
private void unexportObjectSilently() {
	try {
		UnicastRemoteObject.unexportObject(this.exportedObject, true);
	}
	catch (NoSuchObjectException ex) {
		if (logger.isInfoEnabled()) {
			logger.info("RMI object for service '" + this.serviceName + "' is not exported anymore", ex);
		}
	}
}
 

/**
 * Returns the stub for the remote object <b>obj</b> passed
 * as a parameter. This operation is only valid <i>after</i>
 * the object has been exported.
 *
 * @return the stub for the remote object, <b>obj</b>.
 * @exception NoSuchObjectException if the stub for the
 * remote object could not be found.
 */
public static Remote getStub(Remote impl)
    throws NoSuchObjectException
{
    Target target = getTarget(impl);
    if (target == null) {
        throw new NoSuchObjectException("object not exported");
    } else {
        return target.getStub();
    }
}
 

/**
* The group's <code>inactiveObject</code> method is called
* indirectly via a call to the <code>Activatable.inactive</code>
* method. A remote object implementation must call
* <code>Activatable</code>'s <code>inactive</code> method when
* that object deactivates (the object deems that it is no longer
* active). If the object does not call
* <code>Activatable.inactive</code> when it deactivates, the
* object will never be garbage collected since the group keeps
* strong references to the objects it creates. <p>
*
* The group's <code>inactiveObject</code> method
* unexports the remote object from the RMI runtime so that the
* object can no longer receive incoming RMI calls. This call will
* only succeed if the object has no pending/executing calls. If
* the object does have pending/executing RMI calls, then false
* will be returned.
*
* If the object has no pending/executing calls, the object is
* removed from the RMI runtime and the group informs its
* <code>ActivationMonitor</code> (via the monitor's
* <code>inactiveObject</code> method) that the remote object is
* not currently active so that the remote object will be
* re-activated by the activator upon a subsequent activation
* request.
*
* @param id the object's activation identifier
* @returns true if the operation succeeds (the operation will
* succeed if the object in currently known to be active and is
* either already unexported or is currently exported and has no
* pending/executing calls); false is returned if the object has
* pending/executing calls in which case it cannot be deactivated
* @exception UnknownObjectException if object is unknown (may already
* be inactive)
* @exception RemoteException if call informing monitor fails
*/
public boolean inactiveObject(ActivationID id)
    throws ActivationException, UnknownObjectException, RemoteException
{

    try {
        acquireLock(id);
        synchronized (this) {
            if (groupInactive == true)
                throw new ActivationException("group is inactive");
        }

        ActiveEntry entry = active.get(id);
        if (entry == null) {
            // REMIND: should this be silent?
            throw new UnknownObjectException("object not active");
        }

        try {
            if (Activatable.unexportObject(entry.impl, false) == false)
                return false;
        } catch (NoSuchObjectException allowUnexportedObjects) {
        }

        try {
            super.inactiveObject(id);
        } catch (UnknownObjectException allowUnregisteredObjects) {
        }

        active.remove(id);

    } finally {
        releaseLock(id);
        checkInactiveGroup();
    }

    return true;
}
 

public boolean unexportObject(Remote obj, boolean force)
    throws NoSuchObjectException {
    System.out.println("CustomRMIExporter::unexportObject():: " +
                       "Remote = " + obj);
    if (obj.toString().startsWith(
            "javax.management.remote.rmi.RMIJRMPServerImpl"))
        rmiServerUnexported = true;
    if (obj.toString().startsWith(
            "javax.management.remote.rmi.RMIConnectionImpl"))
        rmiConnectionUnexported = true;
    return UnicastRemoteObject.unexportObject(obj, force);
}
 

public static void unexportRegistry() {
    // Remove the entry from registry
    try {
        if (registry != null) {
            UnicastRemoteObject.unexportObject(registry, true);
            registry = null;
        }
    } catch(NoSuchObjectException ex) {
        // This exception can appears only if we attempt
        // to unexportRegistry second time. So it's safe
        // to ignore it without additional messages.
    }
}
 

/**
 * Unexport the registered RMI object, logging any exception that arises.
 */
private void unexportObjectSilently() {
	try {
		UnicastRemoteObject.unexportObject(this.exportedObject, true);
	}
	catch (NoSuchObjectException ex) {
		if (logger.isInfoEnabled()) {
			logger.info("RMI object for service '" + this.serviceName + "' is not exported anymore", ex);
		}
	}
}
 

@Override
public void dispose() {
	try {
		bufferFileHandle.dispose();
	}
	catch (IOException e) {
		// handle may have already been disposed
		if (!(e instanceof NoSuchObjectException)) {
			Msg.error(this, e);
		}
	}
}
 

public boolean unexportObject(Remote obj, boolean force)
    throws NoSuchObjectException {
    System.out.println("CustomRMIExporter::unexportObject():: " +
                       "Remote = " + obj);
    if (obj.toString().startsWith(
            "javax.management.remote.rmi.RMIJRMPServerImpl"))
        rmiServerUnexported = true;
    if (obj.toString().startsWith(
            "javax.management.remote.rmi.RMIConnectionImpl"))
        rmiConnectionUnexported = true;
    return UnicastRemoteObject.unexportObject(obj, force);
}
 

private void unexport(Remote obj, boolean force)
        throws NoSuchObjectException {
    RMIExporter exporter =
        (RMIExporter) env.get(RMIExporter.EXPORTER_ATTRIBUTE);
    if (exporter == null)
        UnicastRemoteObject.unexportObject(obj, force);
    else
        exporter.unexportObject(obj, force);
}
 

/** routine to unexport an object */
public static void unexport(Remote obj) {
    if (obj != null) {
        try {
            mesg("unexporting object...");
            UnicastRemoteObject.unexportObject(obj, true);
        } catch (NoSuchObjectException munch) {
        } catch (Exception e) {
            e.getMessage();
            e.printStackTrace();
        }
    }
}