[omniNotify] resolving Notification Service

[Andy Goetz]

Hi,

I have partly resolved my problem of bootstrapping. In my program which
was converting the ior to an EventChannel I had mistyped /tmp/rdfact.ior
and /tmp/rdchan.ior ! Once I had corrected this stupid mistake I could
correctly resolve these two references to their correct types. I still
cannot get the resolve_initial_references on "NotificationService" to
work however.  Is this supposed to work ? I do not see it being used in
any of the examples.

Now I get a CORBA::SystemException when I try to :

structuredProxyPushConsumer -> connect_structured_push_supplier(
                 CosNotifyComm::StructuredPushSupplier::_nil());

Up to then everything seems to work fine. Any ideas about what the
beginner is doing wrong again ?

Thanks

Andy

On Thu, 30 Jan 2003, Andy Goetz wrote:

> Hi,
> 
> I am new to omniNotify so please be patient if my question has an obvious
> answer.
> 
> I am trying to get a VERY simple example working with a server and client
> for omniNotify building them from scratch. I have hacked the examples code
> to send my own events but I do not find it very clear. I would like to
> write a server and client from scratch using the COS Notification API
> directly. My first example fails just trying to get the
> EventChannelFactory.
> 
> My code to get a handle on the EventChannelFactory looks like this :
> 
>     CosNotifyChannelAdmin::EventChannel_var eventChannelFactory;
>     try
>     {
>         CORBA::Object_var obj =
>             orb -> resolve_initial_references("NotificationService");
>  
>         //
>         // Narrow the CORBA_Object reference to an EventChannelFactory
>         // reference so we can invoke its methods
>         //
>         eventChannelFactory =
>             CosNotifyChannelAdmin::EventChannelFactory::_narrow(obj);
>  
>     }
>     catch(...)
>     {
>         cerr << "Cannot resolve `NotificationService'" << endl;
>         exit(1);
>     }
>  
>     //
>     // Make sure the CORBA object was really an EventChannelFactory
>     //
>     if(CORBA::is_nil(eventChannelFactory))
>     {
>         cerr << "`NotificationService' initial reference is not "
>              << "a CosNotifyChannelAdmin::EventChannelFactory"
>              << endl;
>         exit(1);
>     }
> 
> But it never resolves the EventChannelFactory. I have tried resolving the
> IOR in the /tmp/rdifact.ior file as well but when I do the narrow it says
> this is not an EventChannelFactory.
> 
> My questions are :
> 
> (1) is the bootstrap method via "NotificationService" supported ?
> 
> (2) why can I not narrow /tmp/rdifact.ior to
>     
>     CosNotifyChannelAdmin::EventChannelFactory ?
> 
> Thanks for any help you can give on this.
> 
> Andy Gotz
> 
> --
> European Synchrotron Radiation Facility
> 6, rue Jules Horowitz, 
> Grenoble, 38043 
> FRANCE
> 
> tel: (+33)-476882646
> 
> email: goetz@esrf.fr
>        andy_gotz@yahoo.fr
> 
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--
European Synchrotron Radiation Facility
6, rue Jules Horowitz, 
Grenoble, 38043 
FRANCE

tel: (+33)-476882646

email: goetz@esrf.fr
       andy_gotz@yahoo.fr