Message Style Web Serivce Example

Question

Hi,
Am trying the run the message style web service example that comes along
with weblogic server.
As per the documentation, I created a JMS connection factory and JMS topic,
with the JNDI names
as given in the documentation.
I built the example using ant, and that worked successfully. It created an
ear file, which I deployed successfully
in the weblogic server.
Now when I am testing the example, I run the Consumer client first and then
run the Producer client.
Now the problem is that the message is delivered sometimes and sometimes its
not delivered.
Also when I run more that one instance of Consumer client, the behaviour is
unpredicatable, the message is sometimes
delivered to all consumers, sometimes, to one consumer and sometimes to
none.
I checked the 'Montior JMS Destination' on the weblogic console, and it
shows the correct no of messages,
but it also shows some Bytes Pending.
Am not sure, what could be the reason for this. Can someone please help me
on this.
Thanks
Amit

Answer 1

I have an open ticket with BEA regarding this issue. The problem is in that this
type of WS in WebLogic implementation works incorrect with JMS. In particular,
the Servlet generated on the server does not disconnect itself from the JMS. New
client causes a new JMS connection. If you deal with JMS Queue and accidentally
produce more than one "listeners", the JMS decides which listener would be granted
the message. That's why you get messages randomly.
The second problem that I've found is that message-style WS capable to receive
messages that sent only by message-style WS. In my tests, the messages were sent
by regular sender ( see WLS Examples for topic and queue ) while the message-style
WS was the listener, i.e. implemented "receive" method. This WS did not get any
messages sent by regular sender but always got messages sent by another WS ( to
the queue or to the topic, did not matter ).
I've decided to write my own message-style WS instead of BEA's implementation
finally.
-Michael
"Amit" <[email protected]> wrote:
Hi,
Am trying the run the message style web service example that comes along
with weblogic server.
As per the documentation, I created a JMS connection factory and JMS
topic,
with the JNDI names
as given in the documentation.
I built the example using ant, and that worked successfully. It created
an
ear file, which I deployed successfully
in the weblogic server.
Now when I am testing the example, I run the Consumer client first and
then
run the Producer client.
Now the problem is that the message is delivered sometimes and sometimes
its
not delivered.
Also when I run more that one instance of Consumer client, the behaviour
is
unpredicatable, the message is sometimes
delivered to all consumers, sometimes, to one consumer and sometimes
to
none.
I checked the 'Montior JMS Destination' on the weblogic console, and
it
shows the correct no of messages,
but it also shows some Bytes Pending.
Am not sure, what could be the reason for this. Can someone please help
me
on this.
Thanks
Amit