SOA Suite 11g: How to invoke composite services
By clemens.utschig on Dec 10, 2009
another undocumented sample end2end-108-InvokingCompositeServices.zip shows how to invoke composite services via Event, REST, JAX-WS, and Direct Binding.
In a nutshell - you can only invoke what you declare to be invocable via a certain binding. In the sample you will see
<binding.direct> which is the direct, transactional java based binding
<binding.ws> which exposes a service via SOAP/http & rest enables it and
<business-events> which enables an event subscription.
enjoy - and let me know if you run into issues