How do define a timing cycle in bpel?

Question

I want to invoke an activity every thirty seconds ,how to define it in BPEL?
Thanks!

Answer 1

You can invoke an activity each 30 sec in this way:
From bpel designer:
while (condition)
business logic (invoke activity)
wait (PT30S)
BPEL source code:
<while name="While" condition=" something operator something">
<sequence>
businesslogic
<wait for="PT15S" name="wait-1"/>
</sequence>
</while>
Or you can use eventHandler/onAlarm:
                                        <eventHandlers>
                                             <onAlarm for="PT30S">
                                                  <sequence>
                                                  </sequence>
                                             </onAlarm>
                                        </eventHandlers>
For more information see bpel's tutorials
I think that exists only 1.1 version of BPEL4WS, it's right?
Goodbye
Andrea