Examples of java.rmi.NoSuchObjectException

java.rmi.NoSuchObjectException
A NoSuchObjectException is thrown if an attempt is made to invoke a method on an object that no longer exists in the remote virtual machine. If a NoSuchObjectException occurs attempting to invoke a method on a remote object, the call may be retransmitted and still preserve RMI's "at most once" call semantics. A NoSuchObjectException is also thrown by the method java.rmi.server.RemoteObject.toStub and by the unexportObject methods of java.rmi.server.UnicastRemoteObject and java.rmi.activation.Activatable and @version 1.13, 11/17/05 @author Ann Wollrath @since JDK1.1 @see java.rmi.server.RemoteObject#toStub(Remote) @see java.rmi.server.UnicastRemoteObject#unexportObject(Remote,boolean) @see java.rmi.activation.Activatable#unexportObject(Remote,boolean)


        // Now map to the correct RemoteException type...
        if (ex instanceof COMM_FAILURE) {
            return new MarshalException(message, ex);
        } else if (ex instanceof INV_OBJREF) {
            RemoteException newEx = new NoSuchObjectException(message);
            newEx.detail = ex;
            return newEx;
        } else if (ex instanceof NO_PERMISSION) {
            return new AccessException(message, ex);
        } else if (ex instanceof MARSHAL) {
            return new MarshalException(message, ex);
        } else if (ex instanceof OBJECT_NOT_EXIST) {
            RemoteException newEx = new NoSuchObjectException(message);
            newEx.detail = ex;
            return newEx;
        } else if (ex instanceof TRANSACTION_REQUIRED) {
            RemoteException newEx = new TransactionRequiredException(message);
            newEx.detail = ex;

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                result = java.rmi.server.RemoteObject.toStub(obj);
            }
        }


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


        return result;
    }

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            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.");
            }
        }
    }

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    @Override
    public Object invoke(final Object proxy, final Method method, final Object... args) throws Throwable {
        if (isInvalidReference.get()) {
            if (remote || java.rmi.Remote.class.isAssignableFrom(method.getDeclaringClass())) {
                throw new NoSuchObjectException("reference is invalid");
            } else {
                throw new NoSuchEJBException("reference is invalid");
            }
        }

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                    throw new SystemException("Unexpected load exception", e);
                }


                // Did we find the instance?
                if (instance == null) {
                    throw new InvalidateReferenceException(new NoSuchObjectException("Not Found"));
                }


                // remember instance until it is returned to the cache                
                checkedOutInstances.put(primaryKey, instance);
            }

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        entrancyTracker.enter(deploymentInfo, callContext.getPrimaryKey());
        try {
            bean = (EntityBean) cmpEngine.loadBean(callContext, callContext.getPrimaryKey());
            if (bean == null) {
                throw new NoSuchObjectException(deploymentInfo.getDeploymentID() + " : " + callContext.getPrimaryKey());
            }


            returnValue = runMethod.invoke(bean, args);


            // when there is not transaction, merge the data from the bean back into the cmp engine

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        txPolicy.beforeInvoke(null, txContext);
        try {
            EntityBean entityBean = (EntityBean) cmpEngine.loadBean(callContext, callContext.getPrimaryKey());
            if (entityBean == null) {
                throw new NoSuchObjectException(callContext.getDeploymentInfo().getDeploymentID() + " " + callContext.getPrimaryKey());
            }
            ejbRemove(entityBean);
            cmpEngine.removeBean(callContext);
        } catch (NoSuchObjectException e) {
            txPolicy.handleApplicationException(e, false, txContext);

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    }


    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        if (isInvalidReference) {
            if (remote || java.rmi.Remote.class.isAssignableFrom(method.getDeclaringClass())){
                throw new NoSuchObjectException("reference is invalid");
            } else {
                throw new NoSuchEJBException("reference is invalid");
            }
        }

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import java.lang.reflect.Method;
import java.rmi.NoSuchObjectException;


public class InvalidatedReferenceHandler implements InvocationHandler, Serializable {
    public Object invoke(Object proxy, Method method, Object[] args) throws Throwable {
        throw new NoSuchObjectException("reference is invalid");
    }

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        if (queueEntry != null) {
            // if bean is timed out, destroy it
            if (entry.isTimedOut()) {
                entry = getBeanIndex(callContext).remove(entry.primaryKey);
                handleTimeout(entry, callContext);
                throw new InvalidateReferenceException(new NoSuchObjectException("Stateful SessionBean has timed-out"));
            }
            return entry.bean;
        } else {
            // if it is not in the queue, the bean is already being invoked
            // the only reentrant/concurrent operations allowed are Session synchronization callbacks

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