Hi Thomas
The easiest way to accomplish this is through a Class mediator. i.e. you
write a simple POJO to initialize (for JNDI lookup etc) your code, and
then on each received message, you perform your call to the EJB, and
then based on the result, enrich/transform the message as necessary and
then pass it on. Your code will have full access to the message, and
thus you could do anything you want. Of course, before your class
mediator intercepts the message (and after) you could use the other
mediators to perform your call only on a specific filter etc. or perform
transforms etc through other means..
Please see the following link to see how you could write a sample
mediator
http://svn.apache.org/viewvc/webservices/synapse/trunk/java/src/site/resources/Synapse_Samples.html?content-type=text%2Fhtml&view=co#Sample510
Also see http://ws.apache.org/synapse/Synapse_Extending.html
Also see http://issues.apache.org/jira/browse/SYNAPSE-50 for a sample
mediator by one of our users
If you wish, you may also use Spring to wire up your mediator.. Let me
know if you need any more help on this!
asankha
Thomas Lundqvist wrote:
Hello!
I would like to understand more about the possibilities of invoking
external
components when using Synapse as a web service proxy. In one instance I
would like the proxy to intercept a web service call from a Client. The
proxy should make a call to an EJB for e g performing an evaluation
based on
the request data. After the (successful) evaluation the call should
proceed
by invoking the Server. In this example the proxy (Synapse) would expose
same WS interface as the Server. My main concern is how to integrate /
call
the EJB.
Can someone give some pointers / examples on how to achieve this with
Synapse? Any views on the scenario as such are also appreciated...
Many thanks,
Thomas
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