Chiradeep,
where's the problem?, JMS listeners run in separate threads as well.
Are you worried about the sleep() call? If so, it's only because the
main thread has to wait until the response has been received before
exiting - in the meantime the main thread could accomplish other
tasks as well.
Michele
On 5 Dec 2007, at 14:51, Chiradeep_Banik wrote:
Hi,
I am new to web service and AXIS2 engine. I have a basic doubt
about the asynchronous web service AXIS2 provides. Does it provide
a complete asynchronous communication? I have seen the following
code in AXIS2 site, the client basically waits until a response
comes from server. Comparing this with JMS/MQ communication, the
client does not wait when a message is put in the queue and a
seperate a seperate MDB picks up the response when send by server.
try {
OMElement payload = ClientUtil.getEchoOMElement();
Options options = new Options();
options.setTo(targetEPR);
options.setTransportInProtocol(Constants.TRANSPORT_HTTP);
options.setUseSeparateListener(true);
options.setAction("urn:echo"); // this is the action
mapping we put within the service.xml
//Callback to handle the response
Callback callback = new Callback() {
public void onComplete(AsyncResult result) {
System.out.println(result.getResponseEnvelope());
}
public void onError(Exception e) {
e.printStackTrace();
}
};
//Non-Blocking Invocation
sender = new ServiceClient();
sender.engageModule(new QName
(Constants.MODULE_ADDRESSING));
sender.setOptions(options);
sender.sendReceiveNonBlocking(payload, callback);
//Wait till the callback receives the response.
while (!callback.isComplete()) {
Thread.sleep(1000);
}
//Need to close the Client Side Listener.
} catch (AxisFault axisFault) {
axisFault.printStackTrace();
} catch (Exception ex) {
ex.printStackTrace();
} finally {
try {
sender.cleanup();
} catch (AxisFault axisFault) {
//have to ignore this
}
}
Can somebody share with me a sample asynchronous web service client
code using AXIS2 1.3?
Thanks and Regards,
Chiradeep
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