Tuesday, March 10, 2015

ForwardException

com.sun.corba.se.spi.protocol.ForwardException

ForwardException is described in the javadoc comments as:

Thrown to signal an OBJECT_FORWARD or LOCATION_FORWARD

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.activation.ServerManagerImpl.handle(ObjectKey)

public void handle(ObjectKey okey) {
    IOR newIOR = null;
    ServerLocationPerORB location;
    ObjectKeyTemplate oktemp = okey.getTemplate();
    int serverId = oktemp.getServerId();
    String orbId = oktemp.getORBId();
    try {
        ServerTableEntry entry = getEntry(serverId);
        location = locateServerForORB(entry, orbId, true);
        if (debug) System.out.println('ServerManagerImpl: handle called for server id' + serverId + '  orbid  ' + orbId);
        int clearPort = 0;
        EndPointInfo[] listenerPorts = location.ports;
        for (int i = 0; i < listenerPorts.length; i++) {
            if ((listenerPorts[i].endpointType).equals(IIOP_CLEAR_TEXT.value)) {
                clearPort = listenerPorts[i].port;
                break;
            }
        }
        IIOPAddress addr = IIOPFactories.makeIIOPAddress(orb, location.hostname, clearPort);
        IIOPProfileTemplate iptemp = IIOPFactories.makeIIOPProfileTemplate(orb, GIOPVersion.V1_2, addr);
        if (GIOPVersion.V1_2.supportsIORIIOPProfileComponents()) {
            iptemp.add(IIOPFactories.makeCodeSetsComponent(orb));
            iptemp.add(IIOPFactories.makeMaxStreamFormatVersionComponent());
        }
        IORTemplate iortemp = IORFactories.makeIORTemplate(oktemp);
        iortemp.add(iptemp);
        newIOR = iortemp.makeIOR(orb, 'IDL:org/omg/CORBA/Object:1.0', okey.getId());
    } catch (Exception e) {
        throw wrapper.errorInBadServerIdHandler(e);
    }
    if (debug) System.out.println('ServerManagerImpl: handle ' + 'throws ForwardException');
    try {
        Thread.sleep(serverStartupDelay);
    } catch (Exception e) {
        System.out.println('Exception = ' + e);
        e.printStackTrace();
    }
    throw new ForwardException(orb, newIOR);
}

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.interceptors.PIHandlerImpl.invokeServerPIEndingPoint(ReplyMessage)

public void invokeServerPIEndingPoint(ReplyMessage replyMessage) {
    if (!hasServerInterceptors) return;
    ServerRequestInfoImpl info = peekServerRequestInfoImplStack();
    info.setReplyMessage(replyMessage);
    info.setCurrentExecutionPoint(info.EXECUTION_POINT_ENDING);
    if (!info.getAlreadyExecuted()) {
        int replyStatus = replyMessage.getReplyStatus();
        short piReplyStatus = REPLY_MESSAGE_TO_PI_REPLY_STATUS[replyStatus];
        if ((piReplyStatus == LOCATION_FORWARD.value) || (piReplyStatus == TRANSPORT_RETRY.value)) {
            info.setForwardRequest(replyMessage.getIOR());
        }
        Exception prevException = info.getException();
        if (!info.isDynamic() && (piReplyStatus == USER_EXCEPTION.value)) {
            info.setException(omgWrapper.unknownUserException(CompletionStatus.COMPLETED_MAYBE));
        }
        info.setReplyStatus(piReplyStatus);
        interceptorInvoker.invokeServerInterceptorEndingPoint(info);
        short newPIReplyStatus = info.getReplyStatus();
        Exception newException = info.getException();
        if ((newPIReplyStatus == SYSTEM_EXCEPTION.value) && (newException != prevException)) {
            throw (SystemException) newException;
        }
        if (newPIReplyStatus == LOCATION_FORWARD.value) {
            if (piReplyStatus != LOCATION_FORWARD.value) {
                IOR ior = info.getForwardRequestIOR();
                throw new ForwardException(orb, ior);
            } else if (info.isForwardRequestRaisedInEnding()) {
                replyMessage.setIOR(info.getForwardRequestIOR());
            }
        }
    }
}

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.interceptors.PIHandlerImpl.serverPIHandleExceptions(ServerRequestInfoImpl)

/**
     * Handles exceptions for the starting and intermediate points for
     * server request interceptors.  This is common code that has been
     * factored out into this utility method.
     * This method will NOT work for ending points.
     */
private void serverPIHandleExceptions(ServerRequestInfoImpl info) {
    int endingPointCall = info.getEndingPointCall();
    if (endingPointCall == ServerRequestInfoImpl.CALL_SEND_EXCEPTION) {
        throw (SystemException) info.getException();
    } else if ((endingPointCall == ServerRequestInfoImpl.CALL_SEND_OTHER) && (info.getForwardRequestException() != null)) {
        IOR ior = info.getForwardRequestIOR();
        throw new ForwardException(orb, ior);
    }
}

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.oa.poa.POAImpl.getInvocationServant(OAInvocationInfo)

public void getInvocationServant(OAInvocationInfo info) {
    try {
        lock();
        if (debug) {
            ORBUtility.dprint(this, 'Calling getInvocationServant on poa ' + this);
        }
        java.lang.Object servant = null;
        try {
            servant = mediator.getInvocationServant(info.id(), info.getOperation());
        } catch (ForwardRequest freq) {
            throw new ForwardException(getORB(), freq.forward_reference);
        }
        info.setServant(servant);
    } finally {
        if (debug) {
            ORBUtility.dprint(this, 'Exiting getInvocationServant on poa ' + this);
        }
        unlock();
    }
}

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

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