Re: [carol] Carol configuration for handling all features request

[Florent BENOIT <Florent.BENOIT@xxxxxxxxxxxxx>]

> If you do new InitialContext().lookup("rmi://host:1099/dummyTest")
> then you know the protocol to use to call the naming server (rmi).


   Ok, I understand the problem.

For me, using new InitialContext(env) with an hashtable is an explicit 
call to chose the configuration to use.
So yes, by putting provider_url, etc allow us to choose the right config 
(in fact we are not in multiprotocol mode anymore).
But there is something which is hardcoded somewhere.

We should do only new InitialContext() without env to be the more 
portable across all different vendors.
But with this we need an explicit call to carol to change the protocol 
to use. (and this can be provided by the container).
User code don't call any Carol class, but container do.

> Am I right in assuming that before the real remote call to lookup you end up in carol code, so you can figure out the protocol to contact the naming server ?

Sure new InitialContext() always end up into carol code as we have to set 
the property 
-Djava.naming.factory.initial=org.objectweb.carol.jndi.spi.MultiOrbInitialContextFactory
 when using Carol.

But without arguments to InitialContext(), there is no way to find out 
the "right" protocol without choosing a default one or if container set 
the protocol.


Florent.


Bordet, Simone wrote:

> Hi, 
>
>  
>
> > Yes, some carol code is hit anyway on interceptors But when 
> > user do in its code : new InitialContext().lookup("dummyTest"),
> > we have to choose the config/protocol to use (is it jrmp on 
> > url1, jrmp on url2, iiop, etc) For now, it uses the first 
> > protocol of carol.protocols property.
> > The interceptors are propagated on the specific protocol but 
> > how to determine the protocol for the lookup ? for me it's 
> > impossible without an explicit call to set the current config 
> > which will be used for the lookup.
> >    
>
> Again, I am making assumptions that may be wrong, so be patient with me...
>
> If you do 
>
> new InitialContext().lookup("rmi://host:1099/dummyTest")
>
> then you know the protocol to use to call the naming server (rmi).
>
> If you do
>
> Map env = ...
> env.put(Context.PORVIDER_URL, "iiop://host");
> new InitialContext(env).lookup("dummyTest")
>
> then you know the protocol to use to call the naming server (rmi).
>
> If you do
>
> new InitialContext(env).lookup("dummyTest")
>
> then you call Context.getEnvironment(), and it should contain the content of 
> jndi.properties as per JNDI spec.
>
> Am I right in assuming that before the real remote call to lookup you end up 
> in carol code, so you can figure out the protocol to contact the naming 
> server ?
>
> Thanks !
>
> Simon
>
>  
>
> > When the object is retrieved, all call on this object will 
> > use the right protocol but before retrieving it, we didn't 
> > know which one choose.
> >
> > Florent.
> >
> >
> >    
>
>  
>
> ------------------------------------------------------------------------
>
>
>

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