Cannot obtain composite service directly

[Adrian Mos]

Hi guys,

Apologies if this issue has already been addressed, I did a quick  
check in JIRA and on the mailing lists and could not find it. It's a  
rather fundamental issue so it's possible that I misunderstand  
something in the way composite services should be obtained.

Basically I have a composite file that contains a component and that  
also exposes a service (which promotes the component's implicit  
service). My standalone Java client can obtain the component's  
implicit service using SCADomain.getService(SERVICE_CLASS,  
"COMPONENT_NAME") but cannot obtain the same service by just using  
the composite's service name.

Here's the composite:
<?xml version="1.0" encoding="UTF-8"?>
<composite xmlns="http://www.osoa.org/xmlns/sca/1.0";  
targetNamespace="http://www.inria.fr";
        xmlns:reservation="http://www.inria.fr"; name="WeatherComposite">

        <service name="InnerWeatherService" promote="InnerWeatherComponent">
                <interface.java interface="services.WeatherService" />
        </service>

        <component name="InnerWeatherComponent">
                <implementation.java class="implementations.WeatherImplementation" 
/>
        </component>
</composite>

And the client code:
SCADomain domain = SCADomain.newInstance("weather.composite");
WeatherService service = domain.getService(WeatherService.class,  
"InnerWeatherComponent");
WeatherService service2 = domain.getService(WeatherService.class,  
"InnerWeatherService");
System.out.println("The weather is: " + service.getForecast());
System.out.println("Again, the weather is: " + service2.getForecast());

The last line generates an org.osoa.sca.ServiceUnavailableException  
exception with the message No service invoker is available for  
reference default (bindingURI=InnerWeatherService operation=getForecast)

Please let me know if this is the expected behaviour and if so why  
(i.e. is this a bug or a feature? :) ).

Thanks,
Adrian.