Hi there Drone42,
Good point! JBI does borrow some things from WSDL - like the message
exchange paradigms (MEPs), and the concept that a service is a
collection of endpoints. But that's about as far as it goes: when you
create services on the bus you identify them using a WSDL-like service
name, but you don't have to define any WSDL. All your service does is
receive a MessageExchange, which contain your message payload as XML,
and potentially a number of MIME attachments. So, you don't need to
define a WSDL "interface" for your service.
This took a while for me to get used to - I'm used to strongly typed
services with well-defined interfaces. In ServiceMix, however, service
definition is loosely typed: a service on the NMR just listens to
MessageExchanges.
That said, if you do want to write a strongly-typed service with WSDL,
then use the cxf-se component do deploy a JAX-WS service
implementation onto the NMR. This works for both WSDL-first and Code-
first approaches, and allows you to write pure Java code and not worry
about MessageExchanges. You can then hook up the cxf-bc component to
add a binding to connect that service to the outside world.
Best,
Ade
On 19 Nov 2008, at 22:57, Drone42 wrote:
Reading the JBI and the service mix documentation there is a lot of
talk
about MEPs and service definitions in WSDL. Maybe this has put me on
a wrong
track, because when I first wanted to create a SU, I expected to
start with
the WSDL definition of the service and messages to be exchanged.
And since I have been confused in regards to where the format of the
messages exchanged are defined.
Looking at all the tutorials and example code, I have namely yet to
run into
a WSDL file. Where are they? (I feel a bit like X-files; I know they
must be
out there, but where...).
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