Skip to main content

RemoteException

java.rmi.RemoteException

RemoteException is described in the javadoc comments as:

A RemoteException is the common superclass for a number of communication-related exceptions that may occur during the execution of a remote method call. Each method of a remote interface, an interface that extends java.rmi.Remote, must list RemoteException in its throws clause.

As of release 1.4, this exception has been retrofitted to conform to the general purpose exception-chaining mechanism. The 'wrapped remote exception' that may be provided at construction time and accessed via the public {link: #detail} field is now known as the cause, and may be accessed via the {link: Throwable#getCause()} method, as well as the aforementioned 'legacy field.'

Invoking the method {link: Throwable#initCause(Throwable)} on an instance of RemoteException always throws {@link IllegalStateException}.
version: 1.24, 12/19/03 author: Ann Wollrath since: JDK1.1

Where is this exception thrown?

Following, is a list of exception messages cross-referenced to the source code responsible for throwing them. Click on the method link to view the code and see how the exception is thrown.

How is this exception thrown?

The following sub-sections identify where this exception is thrown, and how (or why) the code is throwing the exception.

Any source code quoted in this section is subject to the Java Research License unless stated otherwise.

com.sun.corba.se.impl.javax.rmi.PortableRemoteObject.connect(Remote, Remote)

/**
     * Makes a Remote object ready for remote communication. This normally
     * happens implicitly when the object is sent or received as an argument
     * on a remote method call, but in some circumstances it is useful to
     * perform this action by making an explicit call.  See the 
     * {@link Stub#connect} method for more information. 
     * @param target the object to connect.
     * @param source a previously connected object.
     * @throws RemoteException if <code>source</code> is not connected
     * or if <code>target</code> is already connected to a different ORB than
     * <code>source</code>.
     */
public void connect(Remote target, Remote source) throws RemoteException {
    if (target == null || source == null) {
        throw new NullPointerException('invalid argument');
    }
    ORB orb = null;
    try {
        if (StubAdapter.isStub(source)) {
            orb = StubAdapter.getORB(source);
        } else {
            Tie tie = Util.getTie(source);
            if (tie == null) {
            } else {
                orb = tie.orb();
            }
        }
    } catch (SystemException e) {
        throw new RemoteException(''source' object not connected', e);
    }
    boolean targetIsIIOP = false;
    Tie targetTie = null;
    if (StubAdapter.isStub(target)) {
        targetIsIIOP = true;
    } else {
        targetTie = Util.getTie(target);
        if (targetTie != null) {
            targetIsIIOP = true;
        } else {
        }
    }
    if (!targetIsIIOP) {
        if (orb != null) {
            throw new RemoteException(''source' object exported to IIOP, 'target' is JRMP');
        }
    } else {
        if (orb == null) {
            throw new RemoteException(''source' object is JRMP, 'target' is IIOP');
        }
        try {
            if (targetTie != null) {
                try {
                    ORB existingOrb = targetTie.orb();
                    if (existingOrb == orb) {
                        return;
                    } else {
                        throw new RemoteException(''target' object was already connected');
                    }
                } catch (SystemException e) {
                }
                targetTie.orb(orb);
            } else {
                StubAdapter.connect(target, orb);
            }
        } catch (SystemException e) {
            throw new RemoteException(''target' object was already connected', e);
        }
    }
}

Source: "Java SE Downloads: Java SE 6 JDK Source Code", at: http://www.oracle.com/technetwork/java/javase/downloads/index.html

com.sun.corba.se.impl.presentation.rmi.StubConnectImpl.connect(StubIORImpl, org.omg.CORBA.Object, org.omg.CORBA.portable.ObjectImpl, ORB)

/** Connect the stub to the orb if necessary.  
    * @param ior The StubIORImpl for this stub (may be null)
    * @param proxy The externally visible stub seen by the user (may be the same as stub)
    * @param stub The stub implementation that extends ObjectImpl
    * @param orb The ORB to which we connect the stub.
    */
public static StubIORImpl connect(StubIORImpl ior, org.omg.CORBA.Object proxy, org.omg.CORBA.portable.ObjectImpl stub, ORB orb) throws RemoteException {
    Delegate del = null;
    try {
        try {
            del = StubAdapter.getDelegate(stub);
            if (del.orb(stub) != orb) throw wrapper.connectWrongOrb();
        } catch (org.omg.CORBA.BAD_OPERATION err) {
            if (ior == null) {
                Tie tie = (javax.rmi.CORBA.Tie) Utility.getAndForgetTie(proxy);
                if (tie == null) throw wrapper.connectNoTie();
                ORB existingOrb = orb;
                try {
                    existingOrb = tie.orb();
                } catch (BAD_OPERATION exc) {
                    tie.orb(orb);
                } catch (BAD_INV_ORDER exc) {
                    tie.orb(orb);
                }
                if (existingOrb != orb) throw wrapper.connectTieWrongOrb();
                del = StubAdapter.getDelegate(tie);
                ObjectImpl objref = new CORBAObjectImpl();
                objref._set_delegate(del);
                ior = new StubIORImpl(objref);
            } else {
                del = ior.getDelegate(orb);
            }
            StubAdapter.setDelegate(stub, del);
        }
    } catch (SystemException exc) {
        throw new RemoteException('CORBA SystemException', exc);
    }
    return ior;
}

Source: "Java SE Downloads: Java SE 6 JDK Source Code", at: http://www.oracle.com/technetwork/java/javase/downloads/index.html

java.rmi.activation.ActivationGroup.getMonitor()

/**
     * Returns the monitor for the activation group.
     */
private ActivationMonitor getMonitor() throws RemoteException {
    synchronized (ActivationGroup.class) {
        if (monitor != null) {
            return monitor;
        }
    }
    throw new RemoteException('monitor not received');
}

Source: "Java SE Downloads: Java SE 6 JDK Source Code", at: http://www.oracle.com/technetwork/java/javase/downloads/index.html

Comments

Post a Comment

Popular posts from this blog

NullPointerException

java.lang.NullPointerException NullPointerException is described in the javadoc comments as: Thrown when an application attempts to use null in a case where an object is required. These include: Calling the instance method of a null object. Accessing or modifying the field of a null object. Taking the length of null as if it were an array. Accessing or modifying the slots of null as if it were an array. Throwing null as if it were a Throwable value. Applications should throw instances of this class to indicate other illegal uses of the null object. author: unascribed version: 1.19, 12/19/03 since: JDK1.0 Where is this exception thrown? Following, is a list of exception messages cross-referenced to the source code responsible for throwing them. Click on the method link to view the code and see how the exception is thrown. The message ' java.lang.NullPointerException: ' is thrown within the method: com.sun.corba.se.impl.interceptors.ClientRequestInfoImpl.get_r...
Post a Comment
Read more

Connection refused: No available router to destination

This is a simple symptom-cause-solution blog entry only. I hope these blogs will help fellow administrators. Symptom The following exception occurs in WebLogic server logs. Most likely to occur during WebLogic server start-up, but similar exceptions may occur at other times. java.net.ConnectException: t3://myserver:8000: Destination unreachable; nested exception is: java.net.ConnectException: Connection refused: connect; No available router to destination] at weblogic.jndi.internal.ExceptionTranslator.toNamingException(ExceptionTranslator.java:49) at weblogic.jndi.WLInitialContextFactoryDelegate.toNamingException(WLInitialContextFactoryDelegate.java:773) at weblogic.jndi.WLInitialContextFactoryDelegate.getInitialContext(WLInitialContextFactoryDelegate.java:363) at weblogic.jndi.Environment.getContext(Environment.java:307) at weblogic.jndi.Environment.getContext(Environment.java:277) Cause This message (Connection refused: connect; No available ...
Post a Comment
Read more

Recovering WebLogic Passwords

In one of my previous articles ( here ) I explained that the SerializedSystemIni.dat file in WebLogic contains the key used to encrypt and decrypt passwords. If you're not currently keeping this file secure I suggest you do, as with it someone can (to name a few things): Decrypt the WebLogic admin username and password from boot.properties. Recover database passwords, if JDBC Connection pools are configured, from config.xml. Recover the keystore passwords from config.xml and obtain SSL certificates stored in the jks keystores. Essentially, they can do whatever they want, so if you don't know who can read your SerializedSystemIni.dat files, look... now. In this article I will show how easy it is for this file to be used to recover lost passwords via a simple WLST script. The Script The script I use to decrypt passwords is incredibly short, and it works with WebLogic 8, 9 and 10 (probably for version 7 too). To use it, just create a new file called decryptpwd.py and paste the fol...
16 comments
Read more